A crankcase ventilation and dehumidification system and engine system

Abstract

The application discloses a crankcase ventilation and dehumidification system and an engine system. The crankcase ventilation and dehumidification system comprises a dehumidification module for absorbing or releasing humidity in a crank ventilation pipeline; a first temperature sensor for collecting the gas temperature of an engine intake manifold, a humidity sensor for collecting the humidity of the gas after dehumidification by the dehumidification module, and a first heating device for heating the gas in the crank ventilation pipeline to increase the water vapor saturation in the crank ventilation pipeline and make the dehumidification module release water vapor; and a control unit for controlling the working state of the first heating device according to the gas temperature collected by the first temperature sensor and the humidity collected by the humidity sensor. The embodiment of the application increases the water vapor saturation in the crank ventilation pipeline, reduces the possibility of water accumulation in the crank ventilation pipeline, and enables the dehumidification module to release water vapor, so that the dehumidification module is regenerated, the service life of the dehumidification module is prolonged, and the dehumidification effect of the dehumidification module is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of crankcases, and in particular to a crankcase ventilation and dehumidification system and an engine system. Background Art

[0002] When the engine is running, a small portion of the high-pressure combustible mixture and burned gas in the combustion chamber will leak into the crankcase through the gap between the piston group and the cylinder (blowby), causing the crankcase pressure to increase, resulting in a decrease in engine performance, and also destroying the crankcase seal, causing oil leakage and loss.

[0003] Crankcase ventilation is essential to prevent excessive crankcase pressure, extend engine oil life, reduce component wear and corrosion, and prevent engine oil leaks. Furthermore, to meet increasingly stringent emissions regulations and improve fuel economy, crankcase ventilation systems must be incorporated into automotive engine design. The crankcase ventilation system effectively reduces excessive crankcase pressure while also effectively and efficiently removing gasoline and water vapor from the engine oil. By utilizing the suction action of the engine's intake system, exhaust gases are expelled to the intake manifold for in-cylinder combustion. However, during operation, the crankcase ventilation line can condense or freeze due to a drop in gas temperature, potentially impacting normal and reliable engine operation. Summary of the Invention

[0004] The present invention provides a crankcase ventilation and dehumidification system and an engine system to increase the water vapor saturation in the tortuous pipeline, reduce the possibility of water accumulation in the tortuous pipeline, and enable the dehumidification module to release water vapor, so that the dehumidification module is regenerated, which can extend the service life of the dehumidification module and improve the dehumidification effect of the dehumidification module.

[0005] According to one aspect of the present invention, a crankcase ventilation and dehumidification system is provided, the crankcase ventilation and dehumidification system comprising:

[0006] Crankcase ventilation system and dehumidification regeneration system; the crankcase ventilation system includes a crankcase pipe;

[0007] The dehumidification regeneration system includes a control unit, a first heating device, a dehumidification module, a humidity sensor and a first temperature sensor;

[0008] The first heating device, the humidity sensor and the first temperature sensor are respectively connected to the first end, the second end and the third end of the control unit; the first heating device, the dehumidification module and the humidity sensor are installed on the curved pipeline;

[0009] The dehumidification module is used to absorb moisture in the Qutong pipeline or release moisture to the Qutong pipeline; the first temperature sensor is used to collect the gas temperature of the engine's intake manifold, the humidity sensor is used to collect the humidity of the gas after dehumidification by the dehumidification module, and the first heating device is used to heat the gas in the Qutong pipeline to increase the water vapor saturation in the Qutong pipeline, so that the dehumidification module releases water vapor; the control unit is used to control the working state of the first heating device according to the gas temperature collected by the first temperature sensor and the humidity collected by the humidity sensor.

[0010] Optionally, the control unit is configured to:

[0011] Comparing a first temperature value measured by the first temperature sensor with a first preset temperature; if the first temperature value is less than or equal to the first preset temperature, comparing the first humidity value with the first preset humidity and the second preset humidity; if the first humidity value is greater than the first preset humidity, controlling the first heating device to heat according to the first preset power until the first humidity value is less than the second preset humidity; if the first humidity value is greater than or equal to the second preset humidity and less than the first preset humidity, controlling the first heating device to heat according to the second preset power until the first humidity value is less than the second preset humidity; if the first humidity value is less than the second preset humidity, continuing to compare the first temperature value measured by the first temperature sensor with the first preset temperature;

[0012] If the first temperature value is greater than the first preset temperature, the first temperature value measured by the first temperature sensor is continued to be compared with the first preset temperature; wherein the first preset humidity is greater than the second preset humidity, and the second preset power is less than the first preset power.

[0013] Optionally, the crankcase ventilation and dehumidification system further includes a second temperature sensor and a first timer, wherein the second temperature sensor is used to detect the engine oil temperature in real time, and the first timer is used to record the working time of the first heating device;

[0014] The control unit is used to:

[0015] After the first heating device starts working, the second temperature value measured by the second temperature sensor is compared with the preset oil temperature, and the first timer is controlled to start timing;

[0016] If the second temperature value is greater than the preset oil temperature, the first heating device is controlled to stop working; if the second temperature value is less than or equal to the preset oil temperature, and the timing result of the first timer does not exceed the first preset time length, the first heating device is controlled to continue heating according to the heating power corresponding to the previous working moment until the first humidity value is less than the second preset humidity; if the second temperature value is less than or equal to the preset oil temperature, and the timing result of the first timer exceeds the first preset time length, the first heating device is controlled to heat according to the third preset power until the first humidity value is less than the second preset humidity; wherein, the third preset power is greater than the first preset power.

[0017] Optionally, the crankcase ventilation and dehumidification system further includes a second heating device; the crankcase pipeline includes a crankshaft main line, a first branch line, and a second branch line; the first branch line and the second branch line are connected to the engine intake manifold, and the distance between the second branch line and the air inlet of the engine intake manifold is smaller than the distance between the first branch line and the air inlet of the engine intake manifold;

[0018] The first heating device and the dehumidification module are installed on the crankshaft main line of the Qutong pipeline, the second heating device is connected to the fourth end of the control unit, and the second heating device is installed on the first branch of the Qutong pipeline; the control unit is used to control the working status of the first heating device and the second heating device according to the gas temperature collected by the first temperature sensor and the humidity collected by the humidity sensor.

[0019] Optionally, the control unit is configured to:

[0020] Compare the first temperature value measured by the first temperature sensor with the first preset temperature and the second preset temperature; if the first temperature value is less than or equal to the first preset temperature and greater than the second preset temperature, compare the first humidity value collected by the humidity sensor with the first preset humidity and the second preset humidity; if the first humidity value is greater than or equal to the first preset humidity, control the first heating device to heat according to the first preset power until the first humidity value is less than the second preset humidity; if the first humidity value is greater than or equal to the second preset humidity and less than the first preset humidity, control the first heating device to heat according to the second preset power until the first humidity value is less than the second preset humidity; if the first humidity value is less than the second preset humidity, continue to compare the first temperature value measured by the first temperature sensor with the first preset temperature and the second preset temperature;

[0021] If the first temperature value is less than or equal to the second preset temperature, the first humidity value collected by the humidity sensor is compared with the second preset humidity and the third preset humidity; if the first humidity value is greater than or equal to the third preset humidity, the first heating device and the second heating device are controlled to heat according to the first preset power until the first humidity value is less than the second preset humidity; if the first humidity value is less than the third preset humidity and greater than the second preset humidity, the first heating device and the second heating device are controlled to heat according to the second preset power until the first humidity value is less than the second preset humidity; if the first humidity value is less than the second preset humidity, the first temperature value measured by the first temperature sensor is continued to be compared with the first preset temperature and the second preset temperature;

[0022] If the first temperature value is greater than the first preset temperature, then continue to compare the first temperature value measured by the first temperature sensor with the first preset temperature;

[0023] The first preset humidity is greater than the third preset humidity, which is greater than the second preset humidity, and the second preset power is less than the first preset power.

[0024] Optionally, the crankcase ventilation and dehumidification system further includes a second temperature sensor and a first timer, wherein the second temperature sensor is used to detect the engine oil temperature in real time, and the first timer is used to record the working time of the first heating device;

[0025] The control unit is used to:

[0026] After the first heating device starts working or the first heating device and the second heating device start working, the second temperature value measured by the second temperature sensor is compared with the preset oil temperature, and the first timer is controlled to start timing;

[0027] If the second temperature value is greater than the preset oil temperature, the first heating device and the second heating device are controlled to stop working; if the second temperature value is less than or equal to the preset oil temperature, and the timing result of the first timer does not exceed the first preset time length, the first heating device and the second heating device are controlled to continue heating according to the heating power corresponding to the previous working moment until the first humidity value is less than the second preset humidity; if the second temperature value is less than or equal to the preset oil temperature, and the timing result of the first timer exceeds the first preset time length, the first heating device and the second heating device are controlled to heat according to the third preset power until the first humidity value is less than the second preset humidity; wherein the third preset power is greater than the first preset power.

[0028] Optionally, the control unit is also used to control the first heating device and the second heating device to stop heating when the timing result of the first timer exceeds a second preset time and the first humidity value is greater than or equal to the second preset humidity; wherein the second preset time is greater than the first preset time.

[0029] Optionally, the crankcase ventilation and dehumidification system further includes an alarm module and a second timer, the second timer being configured to record a duration during which the first humidity value is greater than a fourth preset humidity value;

[0030] The control unit is further configured to control the alarm module to send out an alarm signal when the first humidity value collected by the humidity sensor is greater than a fourth preset humidity and the timing result of the second timer exceeds a third preset duration.

[0031] Optionally, the dehumidification regeneration system further includes a battery, and a power supply end of the battery is connected to the first heating device or the first heating device and the second heating device, for supplying power to the first heating device or the first heating device and the second heating device.

[0032] According to another aspect of the present invention, an engine system is provided. The engine system includes the crankcase ventilation and dehumidification system described in any one of the above embodiments.

[0033] A crankcase ventilation and dehumidification system designed in an embodiment of the present invention includes a dehumidification regeneration system, which includes a control unit, a first heating device, a dehumidification module, a humidity sensor and a first temperature sensor. The dehumidification module is used to absorb moisture in the tortuous pipeline or release moisture to the tortuous pipeline. The first temperature sensor is used to collect the gas temperature of the engine's intake manifold. The humidity sensor is used to collect the humidity of the gas after dehumidification by the dehumidification module. The first heating device is used to heat the gas in the tortuous pipeline. The control unit can control the working state of the first heating device according to the gas temperature collected by the first temperature sensor and the humidity collected by the humidity sensor to increase the water vapor saturation in the tortuous pipeline and reduce the possibility of water accumulation in the tortuous pipeline. It can also enable the dehumidification module to release water vapor, so that the dehumidification module is regenerated, which can extend the service life of the dehumidification module and improve the dehumidification effect of the dehumidification module.

[0034] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 is a schematic diagram of crankcase ventilation and dehumidification principle of an engine system provided according to an embodiment of the present invention;

[0037] Figure 2 is a control flow chart of a crankcase ventilation and dehumidification system provided according to an embodiment of the present invention;

[0038] Figure 3 is a schematic diagram of crankcase ventilation and dehumidification principle of another engine system provided according to an embodiment of the present invention;

[0039] Figure 4 This is a control flow chart of another crankcase ventilation and dehumidification system provided according to an embodiment of the present invention. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0041] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0042] The embodiment of the present invention provides a crankcase ventilation and dehumidification system. Figure 1 This is a crankcase ventilation and dehumidification principle diagram of an engine system provided according to an embodiment of the present invention, with reference to Figure 1 , the crankcase ventilation and dehumidification system includes:

[0043] Crankcase ventilation system and dehumidification regeneration system; the crankcase ventilation system includes a curved pipe 8;

[0044] The dehumidification regeneration system includes a control unit 1, a first heating device 2, a dehumidification module 3, a humidity sensor 4 and a first temperature sensor 23;

[0045] The first heating device 2, the humidity sensor 4 and the first temperature sensor 23 are connected to the first end, the second end and the third end of the control unit 1 respectively; the first heating device 2, the dehumidification module 3 and the humidity sensor 4 are installed on the curved pipe 8;

[0046] The dehumidification module 3 is used to absorb moisture in the tortuous pipeline 8 or release moisture to the tortuous pipeline 8; the first temperature sensor 23 is used to collect the gas temperature of the intake manifold 13 of the engine 22; the humidity sensor 4 is used to collect the humidity of the gas after dehumidification by the dehumidification module 3, and the first heating device 2 is used to heat the gas in the tortuous pipeline 8 to increase the water vapor saturation in the tortuous pipeline 8, so that the dehumidification module 3 releases water vapor; the control unit 1 is used to control the working state of the first heating device 2 according to the gas temperature collected by the first temperature sensor 23 and the humidity collected by the humidity sensor 4.

[0047] Specifically, the tortuosity pipe 8 is connected to the crankcase through the engine 22, and is used to introduce the mixed gas in the crankcase into the intake manifold 13 through the tortuosity pipe 8. When the saturated vapor pressure of water vapor in the tortuosity pipe 8 is large, that is, when the gas humidity in the tortuosity pipe 8 is large, the dehumidification module 3 can absorb the water vapor in the tortuosity pipe 8; when the saturated vapor pressure of water vapor in the tortuosity pipe 8 is small, the dehumidification module 3 can actively release the water vapor in the core of the dehumidification module 3, so that the dehumidification module 3 is regenerated, which can extend the service life of the dehumidification module 3 and improve the dehumidification effect of the dehumidification module 3. The dehumidification module can be a solid dehumidifier. During the normal operation of the dehumidification module 3, the humidity sensor 4 will detect the humidity of the gas after dehumidification by the dehumidification module 3 in real time, and will also collect the gas temperature in the intake manifold 13 of the engine 22 in real time. When the load of the engine 22 is large, the temperature of the gas entering the tortuous pipe 8 from the crankcase is high, and it is not easy to form water accumulation in the tortuous pipe 8, so the control unit 1 does not need to control the first heating device 2 to turn on the work; wherein, the first temperature sensor 23 is a temperature sensor provided in the system. When the load of the engine 22 is small, the temperature of the gas flowing from the crankcase through the engine 22 into the tortuous pipe 8 is low, and since the engine 22 has just started, the gas temperature in the tortuous pipe 8 is close to the gas temperature in the intake manifold 13 of the engine 22, which can be approximated to the atmospheric temperature. The temperature value detected by the first temperature sensor 23 can be judged to realize the control of the first heating device 2, and the installation cost of the additional temperature sensor can be reduced.

[0048] When the load of the engine 22 is relatively small, if the gas temperature of the intake manifold 13 of the engine 22 is relatively low and the humidity detected by the humidity sensor 4 is relatively high, it means that the gas temperature in the tortuosity pipe 8 is relatively low and the dehumidification module 3 is close to saturation. The dehumidification module 3 cannot absorb the water vapor in the tortuosity pipe 8 very well. At this time, the control unit 1 needs to control the first heating device 2 to turn on the work. On the one hand, it can increase the gas temperature in the tortuosity pipe 8 and reduce the possibility of water accumulation in the tortuosity pipe 8; on the other hand, due to the increase in the gas temperature in the tortuosity pipe 8, the water vapor saturation in the tortuosity pipe 8 can be increased, so that the dehumidification module 3 can release the water vapor in the core of the dehumidification module 3, so that the dehumidification module 3 is regenerated, which can extend the service life of the dehumidification module 3 and improve the dehumidification effect of the dehumidification module 3.

[0049] The crankcase ventilation and dehumidification system comprises a dehumidification regeneration system, the dehumidification regeneration system comprises a control unit 1, a first heating device 2, a dehumidification module 3, a humidity sensor 4 and a first temperature sensor 23, the dehumidification module 3 is used for absorbing moisture in the crank passage pipeline 8 or releasing moisture to the crank passage pipeline 8, the first temperature sensor 23 is used for collecting the gas temperature of the intake manifold 13 of the engine 22, the humidity sensor 4 is used for collecting the humidity of the gas dehumidified by the dehumidification module 3, the first heating device 2 is used for heating the gas in the crank passage pipeline 8, and the control unit 1 can control the working state of the first heating device 2 according to the gas temperature collected by the first temperature sensor 23 and the humidity collected by the humidity sensor 4, so as to improve the water vapor saturation degree in the crank passage pipeline 8, reduce the possibility of water accumulation in the crank passage pipeline 8, and make the dehumidification module 3 release water vapor, so that the dehumidification module 3 is regenerated, the use time of the dehumidification module 3 is prolonged, and the dehumidification effect of the dehumidification module 3 is improved.

[0050] Optionally, referring to Figure 1 , the control unit 1 is used for:

[0051] comparing the first temperature value measured by the first temperature sensor 23 with the first preset temperature, if the first temperature value is less than or equal to the first preset temperature, comparing the first humidity value with the first preset humidity and the second preset humidity, if the first humidity value is greater than the first preset humidity, controlling the first heating device 2 to heat according to the first preset power until the first humidity value is less than the second preset humidity, if the first humidity value is greater than or equal to the second preset humidity and less than the first preset humidity, controlling the first heating device 2 to heat according to the second preset power until the first humidity value is less than the second preset humidity, and if the first humidity value is less than the second preset humidity, continuing to compare the first temperature value measured by the first temperature sensor 23 with the first preset temperature.

[0052] if the first temperature value is greater than the first preset temperature, continuing to compare the first temperature value measured by the first temperature sensor 23 with the first preset temperature, wherein the first preset humidity is greater than the second preset humidity, and the second preset power is less than the first preset power.

[0053] Specifically, if the first temperature value is less than or equal to the first preset temperature, it means that the gas temperature in the tortuous pipeline 8 is low. At this time, the heating power of the first heating device 2 needs to be controlled according to the first humidity value detected by the humidity sensor 4. If the first humidity value is greater than the first preset humidity, it means that the humidity in the tortuous pipeline 8 is very high. The first heating device 2 can be controlled by the control unit 1 to heat according to the larger first preset power until the first humidity value is less than the second preset humidity that meets the humidity standard in the tortuous pipeline 8; if the first humidity value is greater than or equal to the second preset humidity and less than the first preset humidity, it means that the humidity in the tortuous pipeline 8 is large. The first heating device 2 can be controlled by the control unit 1 to heat according to the appropriate second preset power until the first humidity value is less than the second preset humidity that meets the humidity standard in the tortuous pipeline 8; if the first humidity value is less than the second preset humidity, it means that the humidity in the tortuous pipeline 8 is small. There is no need to control the first heating device 2 to heat by the control unit 1 to avoid water accumulation in the tortuous pipeline 8. At this time, it is only necessary to continue to monitor the first temperature value measured by the first temperature sensor 23.

[0054] If the first temperature value is greater than the first preset temperature, it means that the gas temperature in the tortuous pipeline 8 is high. At this time, there is no need to control the first heating device 2 to heat through the control unit 1 to avoid the formation of water accumulation in the tortuous pipeline 8. At this time, it is only necessary to continue to monitor the first temperature value measured by the first temperature sensor 23.

[0055] Among them, the first preset temperature, the first preset humidity, the second preset humidity, the first preset power and the second preset power can be set according to actual conditions. The embodiment of the present invention does not limit this. For example, the first preset temperature can be 15°C, the first preset humidity can be 90%, the second preset humidity can be 70%, the first preset power can be 80% of the maximum power of the first heating device 2, and the second preset power can be 50% of the maximum power of the first heating device 2.

[0056] For example, Figure 2 This is a control flow chart of a crankcase ventilation and dehumidification system according to an embodiment of the present invention, referring to Figure 2 , the working process of the crankcase ventilation and dehumidification system is described as follows:

[0057] S101: The vehicle starts driving.

[0058] S102: The control unit obtains a first temperature value collected by a first temperature sensor and a first humidity value collected by a humidity sensor; and executes step S103.

[0059] S103, the control unit determines whether the first temperature value is greater than 15°C; if so, execute step S108; if not, execute step S104.

[0060] S104 , the control unit determines whether the first humidity value is greater than 90%; if so, execute step S1051 ; if not, execute step S1061 .

[0061] S1051. The control unit controls the first heating device to output 80% of the maximum power; and executes step S1052.

[0062] S1052. The control unit determines whether the first humidity value is less than or equal to 70%; if so, execute step S108; if not, return to execute step S1051.

[0063] S1061. The control unit determines whether the first humidity value is greater than 70% and less than or equal to 90%; if so, execute step S1062; if not, execute step S108.

[0064] S1062: The control unit controls the first heating device to output 50% of the maximum power; and executes step S107.

[0065] S107, the control unit determines whether the first humidity value is less than or equal to 70%; if so, execute step S108; if not, return to execute step S1062.

[0066] S108, end.

[0067] Optional, reference Figure 1 , the crankcase ventilation and dehumidification system further includes a second temperature sensor and a first timer, the second temperature sensor is used to detect the oil temperature of the engine 22 in real time, and the first timer is used to record the working time of the first heating device 2;

[0068] The control unit 1 is used to:

[0069] After the first heating device 2 starts working, the second temperature value measured by the second temperature sensor is compared with the preset oil temperature, and the first timer is controlled to start timing;

[0070] If the second temperature value is greater than the preset oil temperature, the first heating device 2 is controlled to stop working; if the second temperature value is less than or equal to the preset oil temperature and the timing result of the first timer does not exceed the first preset time, the first heating device 2 is controlled to continue heating according to the heating power corresponding to the previous working moment until the first humidity value is less than the second preset humidity;

[0071] If the second temperature value is less than or equal to the preset oil temperature, and the timing result of the first timer exceeds the first preset time, the first heating device 2 is controlled to heat according to the third preset power until the first humidity value is less than the second preset humidity; wherein the third preset power is greater than the first preset power.

[0072] Specifically, if the second temperature value is greater than the preset oil temperature, it means that the oil temperature in the engine 22 is high, so it can be said that the temperature of the gas entering the tortuosity pipe 8 from the crankcase is high. At this time, the first heating device 2 does not need to be heated to avoid water accumulation in the tortuosity pipe 8. Therefore, the control unit 1 controls the first heating device 2 to stop working; if the second temperature value is less than or equal to the preset oil temperature, and the timing result of the first timer does not exceed the first preset time, it means that the heating time of the first heating device 2 is short, and the control unit 1 controls the first heating device 2 to continue heating according to the heating power corresponding to the previous working moment until the first humidity value is less than the second preset humidity that meets the humidity standard in the tortuosity pipe 8; if the second temperature value is less than or equal to the preset oil temperature, and the timing result of the first timer exceeds the first preset time, it means that the engine 22 of the vehicle has been in a low-load driving state. At this time, in order to avoid water accumulation in the tortuosity pipe 8, the heating power of the first heating device 2 needs to be increased. The control unit 1 controls the first heating device 2 to heat according to the larger third preset power until the first humidity value is less than the second preset humidity that meets the humidity standard in the tortuosity pipe 8. Among them, the preset oil temperature, the first preset time and the third preset power can be set according to actual conditions, and the embodiment of the present invention does not limit this.

[0073] Figure 3 This is a crankcase ventilation and dehumidification principle diagram of another engine system provided according to an embodiment of the present invention. Figure 3 The crankcase ventilation and dehumidification system further includes a second heating device 6; the crankcase ventilation and dehumidification system includes a crankshaft main line a, a first branch line a1, and a second branch line a2; the first branch line a1 and the second branch line a2 are connected to the intake manifold 13 of the engine 22, and the distance between the second branch line a2 and the air inlet of the intake manifold 13 of the engine 22 is smaller than the distance between the first branch line a1 and the air inlet of the intake manifold 13 of the engine 22;

[0074] The first heating device 2 and the dehumidification module 3 are installed on the crankshaft main line a of the Qutong pipeline, the second heating device 6 is connected to the fourth end of the control unit 1, and the second heating device 6 is installed on the first branch a1 of the Qutong pipeline; the control unit 1 is used to control the working status of the first heating device 2 and the second heating device 6 according to the gas temperature collected by the first temperature sensor 23 and the humidity collected by the humidity sensor 4.

[0075] Specifically, if the gas temperature of the intake manifold 13 of the engine 22 is low and the humidity detected by the humidity sensor 4 is high, it indicates that the gas temperature in the intake passage is low and the dehumidification module 3 is close to the saturation state, at this time the control unit 1 needs to control the first heating device 2 to open and work; if the gas temperature of the intake manifold 13 of the engine 22 is very low and the humidity detected by the humidity sensor 4 is very high, it indicates that the gas temperature in the intake passage is very low, and it is easy to form gas in the intake passage, and the dehumidification module 3 is closer to the saturation state, the control unit 1 needs to control the first heating device 2 and the second heating device 6 to open and work together, at this time the gas temperature in the intake passage can be quickly increased, thereby quickly reducing the possibility of water accumulation in the intake passage; and because the gas temperature in the intake passage is quickly increased, the water vapor saturation in the intake passage can be quickly increased, so that the dehumidification module 3 can release the water vapor in the core body of the dehumidification module 3, so that the dehumidification module 3 can be quickly regenerated, the use time of the dehumidification module 3 can be prolonged, and the dehumidification effect of the dehumidification module 3 can be improved.

[0076] Optionally, referring to Figure 3 , the control unit 1 is configured to:

[0077] compare the first temperature value measured by the first temperature sensor 23 with the first preset temperature and the second preset temperature, if the first temperature value is less than or equal to the first preset temperature and greater than the second preset temperature, compare the first humidity value collected by the humidity sensor 4 with the first preset humidity and the second preset humidity: if the first humidity value is greater than or equal to the first preset humidity, control the first heating device 2 to heat according to the first preset power until the first humidity value is less than the second preset humidity; if the first humidity value is greater than or equal to the second preset humidity and less than the first preset humidity, control the first heating device 2 to heat according to the second preset power until the first humidity value is less than the second preset humidity; if the first humidity value is less than the second preset humidity, continue to compare the first temperature value measured by the first temperature sensor 23 with the first preset temperature and the second preset temperature;

[0078] if the first temperature value is less than or equal to the second preset temperature, compare the first humidity value collected by the humidity sensor 4 with the second preset humidity and the third preset humidity: if the first humidity value is greater than or equal to the third preset humidity, control the first heating device 2 and the second heating device 6 to heat according to the first preset power until the first humidity value is less than the second preset humidity; if the first humidity value is less than the third preset humidity and greater than the second preset humidity, control the first heating device 2 and the second heating device 6 to heat according to the second preset power until the first humidity value is less than the second preset humidity; if the first humidity value is less than the second preset humidity, continue to compare the first temperature value measured by the first temperature sensor 23 with the first preset temperature and the second preset temperature;

[0079] If the first temperature value is greater than the first preset temperature, then continue to compare the first temperature value measured by the first temperature sensor 23 with the first preset temperature;

[0080] The first preset humidity is greater than the third preset humidity, which is greater than the second preset humidity, and the second preset power is less than the first preset power.

[0081] Specifically, if the first temperature value is less than or equal to the first preset temperature and greater than the second preset temperature, it means that the gas temperature in the Qutong pipeline is low. At this time, the first heating device 2 can be controlled to work according to the first humidity value detected by the humidity sensor 4. If the first humidity value is greater than the first preset humidity, it means that the humidity in the Qutong pipeline is very high, and the first heating device 2 can be controlled by the control unit 1 to heat according to the larger first preset power until the first humidity value is less than the second preset humidity that meets the humidity standard in the Qutong pipeline; if the first humidity value is greater than or equal to the second preset humidity and less than the first preset humidity, it means that the humidity in the Qutong pipeline is large, and the first heating device 2 can be controlled by the control unit 1 to heat according to the appropriate second preset power until the first humidity value is less than the second preset humidity that meets the humidity standard in the Qutong pipeline; if the first humidity value is less than the second preset humidity, it means that the humidity in the Qutong pipeline is small, and there is no need to control the first heating device 2 to heat by the control unit 1 to avoid water accumulation in the Qutong pipeline. At this time, it is only necessary to continue to monitor the first temperature value measured by the first temperature sensor 23;

[0082] If the first temperature value is less than or equal to the second preset temperature, it means that the temperature of the gas in the Qutong pipeline is very low. At this time, it is necessary to control the first heating device 2 and the second heating device 6 to work together according to the first humidity value detected by the humidity sensor 4. If the first humidity value is greater than or equal to the third preset humidity, combined with the lower temperature of the gas in the Qutong pipeline, it can be said that the humidity in the Qutong pipeline is very high at this time, and the first heating device 2 and the second heating device 6 need to be controlled by the control unit 1 to heat according to the first preset power until the first humidity value is less than the second preset humidity that meets the humidity standard in the Qutong pipeline; if the first humidity value is less than the third preset humidity and greater than the second preset humidity, combined with the lower temperature of the gas in the Qutong pipeline, it means that the humidity in the Qutong pipeline is large, and the first heating device 2 and the second heating device 6 can be controlled by the control unit 1 to heat according to the second preset power until the first humidity value is less than the second preset humidity that meets the humidity standard in the Qutong pipeline; if the first humidity value is less than the second preset humidity, it means that the humidity in the Qutong pipeline is small, and there is no need to control the first heating device 2 to heat by the control unit 1 to avoid water accumulation in the Qutong pipeline. At this time, it is only necessary to continue to monitor the first temperature value measured by the first temperature sensor 23;

[0083] If the first temperature value is greater than the first preset temperature, it indicates that the gas temperature in the tortuous pipe is relatively high. In this case, it is not necessary to control the first heating device 2 to heat the tortuous pipe by the control unit 1 to avoid water accumulation in the tortuous pipe. In this case, it is sufficient to continue monitoring the first temperature value measured by the first temperature sensor 23. The first preset temperature, the second preset temperature, the first preset humidity, the second preset humidity, the third preset humidity, the first preset power, and the second preset power can be set according to actual conditions and are not limited in this embodiment of the present invention.

[0084] Optional, reference Figure 3 , the crankcase ventilation and dehumidification system further includes a second temperature sensor and a first timer, the second temperature sensor is used to detect the oil temperature of the engine 22 in real time, and the first timer is used to record the working time of the first heating device 2;

[0085] The control unit 1 is used to:

[0086] After the first heating device 2 starts working or the first heating device 2 and the second heating device 6 start working, the second temperature value measured by the second temperature sensor is compared with the preset oil temperature, and the first timer is controlled to start timing;

[0087] If the second temperature value is greater than the preset oil temperature, the first heating device 2 and the second heating device 6 are controlled to stop working;

[0088] If the second temperature value is less than or equal to the preset oil temperature, and the timing result of the first timer does not exceed the first preset time length, the first heating device 2 and the second heating device 6 are controlled to continue heating according to the heating power corresponding to the previous working moment until the first humidity value is less than the second preset humidity; if the second temperature value is less than or equal to the preset oil temperature, and the timing result of the first timer exceeds the first preset time length, the first heating device 2 and the second heating device 6 are controlled to heat according to the third preset power until the first humidity value is less than the second preset humidity; wherein, the third preset power is greater than the first preset power.

[0089] Specifically, under the condition that the first temperature value is less than or equal to the first preset temperature and greater than the second preset temperature, if the second temperature value is greater than the preset oil temperature, it means that the oil temperature in the engine 22 is high, so it can be said that the temperature of the gas entering the tortuosity pipeline from the crankcase is high. At this time, the first heating device 2 does not need to be heated to avoid the formation of water accumulation in the tortuosity pipeline. Therefore, the first heating device 2 can be controlled to stop working by the control unit 1; if the second temperature value is less than or equal to the preset oil temperature, and the timing result of the first timer does not exceed the first preset time length, it means that the heating time of the first heating device 2 is short, and the control unit 1 controls the first heating device 2 to continue working according to the last working time. The corresponding heating power can be used for heating until the first humidity value is less than the second preset humidity that meets the humidity standard in the Qutong pipeline; if the second temperature value is less than or equal to the preset oil temperature, and the timing result of the first timer exceeds the first preset time, it means that the engine 22 of the vehicle has been in a low-load driving state. At this time, in order to avoid water accumulation in the Qutong pipeline, it is necessary to control the second heating device 6 to open through the control unit 1, so that it works together with the first heating device 2, and increase the heating power of the first heating device 2 and the second heating device 6 to heat according to the larger third preset power until the first humidity value is less than the second preset humidity that meets the humidity standard in the Qutong pipeline.

[0090] Under the condition that the first temperature value is less than or equal to the second preset temperature, if the second temperature value is greater than the preset oil temperature, it means that the oil temperature in the engine 22 is high, so it can be said that the temperature of the gas entering the Qutong pipeline from the crankcase is high. At this time, there is no need for the first heating device 2 and the second heating device 6 to heat it to avoid the formation of water accumulation in the Qutong pipeline. Therefore, the first heating device 2 and the second heating device 6 can be controlled by the control unit 1 to stop working; if the second temperature value is less than or equal to the preset oil temperature, and the timing result of the first timer does not exceed the first preset time length, it means that the heating time of the first heating device 2 and the second heating device 6 is short, and the control unit 1 controls the first heating device 2 and the second heating device 6 to stop working. The second heating device 6 continues to heat according to the heating power corresponding to the previous working moment until the first humidity value is less than the second preset humidity that meets the humidity standard in the Qutong pipeline; if the second temperature value is less than or equal to the preset oil temperature, and the timing result of the first timer exceeds the first preset time, it means that the engine 22 of the vehicle has been in a low-load driving state. At this time, in order to avoid water accumulation in the Qutong pipeline, it is necessary to increase the heating power of the first heating device 2 and the second heating device 6. The control unit 1 controls the first heating device 2 and the second heating device 6 to heat according to the larger third preset power until the first humidity value is less than the second preset humidity that meets the humidity standard in the Qutong pipeline.

[0091] Among them, the preset oil temperature, the first preset time and the third preset power can be set according to actual conditions, and the embodiment of the present invention does not limit this.

[0092] Optionally, the control unit is also used to control the first heating device and the second heating device to stop heating when the timing result of the first timer exceeds a second preset time and the first humidity value is greater than or equal to the second preset humidity; wherein the second preset time is greater than the first preset time.

[0093] Specifically, if the timing result of the first timer exceeds the second preset time, it means that the working time of the first heating device and the second heating device is long enough, and it can also be said that the working time of the engine is long enough. The oil temperature measured by the second temperature sensor must be greater than the second preset oil temperature, which can make the gas temperature entering the Qutong pipeline from the crankcase high enough. At this time, if the first humidity value is greater than or equal to the second preset humidity, the first heating device and the second heating device are not needed for heating to avoid water accumulation in the Qutong pipeline.

[0094] For example, Figure 4 is a control flow chart of another crankcase ventilation and dehumidification system provided according to an embodiment of the present invention, with reference to Figure 4 , the working process of the crankcase ventilation and dehumidification system is described as follows:

[0095] S110: The vehicle starts driving.

[0096] S120. The control unit obtains a first temperature value collected by the first temperature sensor, a first humidity value collected by the humidity sensor, and a second temperature value (oil temperature) measured by the second temperature sensor; and executes step S130.

[0097] S130, the control unit determines whether the first temperature value is greater than 15°C; if so, execute step S200, if not, execute step S140.

[0098] S140. The control unit determines whether the first temperature value is less than or equal to 15°C and greater than 5°C; if so, execute step S1401; if not, execute step S1405.

[0099] S1401. The control unit determines whether the first humidity value is greater than 90%; if so, execute step S1402; if not, execute step S1403.

[0100] S1402: The control unit controls the first heating device to output 80% of the maximum power; and executes step S150.

[0101] S1403, the control unit determines whether the first humidity value is less than or equal to 90% and greater than 70%; if so, execute step S1404, if not, execute step S200.

[0102] S1404: The control unit controls the first heating device to output 50% of the maximum power; and executes step S150.

[0103] S1405. The control unit determines whether the first humidity value is greater than 80%; if so, execute step S1407; if not, execute step S1406.

[0104] S1406. The control unit determines whether the first humidity value is less than or equal to 80% and greater than 70%; if so, execute step S1408; if not, execute step S200.

[0105] S1407 , the control unit controls the first heating device and the second heating device to output 80% of the maximum power; and executes step S150 .

[0106] S1408 , the control unit controls the first heating device and the second heating device to output at 50% of the maximum power; and executes step S150 .

[0107] S150. The control unit determines whether the second temperature value (oil temperature) is greater than 105°C; if so, execute step S200; if not, execute step S160.

[0108] S160, the control unit determines whether the timing result of the timer is greater than 30 minutes; if so, execute step S180, if not, execute step S170.

[0109] S170: The control unit controls the first heating device and the second heating device to perform heating according to the heating power corresponding to the last working moment; and returns to step S150.

[0110] S180 , the control unit controls the first heating device and the second heating device to output at maximum power; and executes step S190 .

[0111] S190, the control unit determines whether the heating time is greater than 50 minutes or whether the first humidity value is less than 70%; if so, execute step S200, if not, return to execute step S180.

[0112] S200, end.

[0113] Optionally, the crankcase ventilation and dehumidification system further includes an alarm module and a second timer, the second timer being configured to record a duration during which the first humidity value is greater than a fourth preset humidity value;

[0114] The control unit is further configured to control the alarm module to send an alarm signal when the first humidity value collected by the humidity sensor is greater than a fourth preset humidity and the timing result of the second timer exceeds a third preset duration.

[0115] Specifically, if the first humidity value is greater than the fourth preset humidity, it means that the dehumidification module has entered a saturated state and cannot continue to dehumidify the Qutong pipeline. If the dehumidification module has been working in a saturated state for more than the third preset time, it means that the regeneration effect of the dehumidification module is not good. The control unit controls the alarm module to send an alarm signal to remind the on-board personnel to replace the core in the dehumidification module in time. For example, when the first humidity value collected by the humidity sensor is greater than 98% and the timing result of the second timer exceeds 4 hours, the control unit needs to control the alarm module to send an alarm signal to remind the on-board personnel to replace the core in the dehumidification module in time.

[0116] Optional, reference Figure 1 and Figure 3 The dehumidification regeneration system also includes a battery 21, the power supply end of the battery 21 is connected to the first heating device 2 or the first heating device 2 and the second heating device 6, and is used to power the first heating device 2 or the first heating device 2 and the second heating device 6.

[0117] An embodiment of the present invention provides an engine system, referring to Figure 3 , the engine system includes the crankcase ventilation and dehumidification system described in any of the above embodiments.

[0118] The engine system includes a crankcase ventilation and dehumidification system, an intake system, an exhaust system and an engine 22; the first end of the tortuous pipe in the crankcase ventilation and dehumidification system is connected to the first end of the engine 22, the second end of the tortuous pipe in the crankcase ventilation and dehumidification system is connected to the first end of the intake system, the second end of the intake system is connected to the second end of the engine 22, and the third end of the engine 22 is connected to the exhaust system.

[0119] The crankcase ventilation and dehumidification system includes a crankcase ventilation system, which includes a crankcase ventilation pipeline, a crankcase forced ventilation valve 9, an oil-gas separator 10, a first one-way valve 5 and a second one-way valve 7.

[0120] The first end of the tortuous pipeline is connected to the crankcase through the engine 22, the first end of the oil-gas separator 10 is connected to the engine 22 through the tortuous pipeline, the second end of the oil-gas separator 10 is connected to the first end of the crankcase forced ventilation valve 9, the second end of the crankcase forced ventilation valve 9 is connected to the intake manifold 13 of the intake system through the tortuous pipeline, the first branch a1 of the tortuous pipeline is connected to the intake manifold 13 close to the intake manifold 12, the second branch a2 of the tortuous pipeline is connected to the intake manifold 13 located between the supercharger 19 and the air filter 20, the second one-way valve 7 is located on the first branch a1 of the tortuous pipeline, and the first one-way valve 5 is located on the second branch a2 of the tortuous pipeline.

[0121] The intake system includes an intake manifold 13, an intake manifold 12, a throttle valve 18, a supercharger 19 and an air filter 20; the intake system is used to deliver a mixture of gasoline, air and water vapor into the engine for full combustion.

[0122] A first end of the throttle valve 18 is connected to a first end of the intake manifold 12 through the intake manifold 13, a second end of the intake manifold 12 is connected to the engine 22, a second end of the throttle valve 18 is connected to a first end of the supercharger 19 through the intake manifold 13, a second end of the supercharger 19 is connected to a first end of the air filter 20 through the intake manifold 13, and a second end of the air filter 20 is connected to the intake manifold 13.

[0123] The exhaust system includes: an exhaust manifold 14, an exhaust header 15, a turbine 16 and a post-processor 17; the exhaust system is used to discharge the exhaust gas generated by the engine combustion and provide boost power for the intake system.

[0124] The first end of the turbine 16 is connected to the first end of the exhaust manifold 14 through the exhaust manifold 15; the second end of the exhaust manifold 14 is connected to the engine 22, the second end of the turbine 16 is connected to the first end of the after-processor 17 through the exhaust manifold 15, and the second end of the after-processor 17 is connected to the exhaust manifold 15.

[0125] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0126] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A crankcase ventilation and dehumidification system, characterized in that: include: Crankcase ventilation system and dehumidification and regeneration system; the crankcase ventilation system includes a curved pipeline; The dehumidification and regeneration system includes a control unit, a first heating device, a dehumidification module, a humidity sensor and a first temperature sensor; The first heating device, the humidity sensor and the first temperature sensor are respectively connected to the first end, the second end and the third end of the control unit; the first heating device, the dehumidification module and the humidity sensor are installed on the curved pipeline; The dehumidification module is used to absorb moisture in the tortuous pipeline or release moisture to the tortuous pipeline; the first temperature sensor is used to collect the gas temperature of the engine's intake manifold, the humidity sensor is used to collect the humidity of the gas after dehumidification by the dehumidification module, and the first heating device is used to heat the gas in the tortuous pipeline to increase the water vapor saturation in the tortuous pipeline, so that the dehumidification module releases water vapor; the control unit is used to control the working state of the first heating device according to the gas temperature collected by the first temperature sensor and the humidity collected by the humidity sensor.

2. The crankcase ventilation and dehumidification system according to claim 1, characterized in that: The control unit is used for: Comparing a first temperature value measured by the first temperature sensor with a first preset temperature; if the first temperature value is less than or equal to the first preset temperature, comparing a first humidity value with a first preset humidity and a second preset humidity; if the first humidity value is greater than the first preset humidity, controlling the first heating device to heat at a first preset power until the first humidity value is less than the second preset humidity; if the first humidity value is greater than or equal to the second preset humidity and less than the first preset humidity, controlling the first heating device to heat at a second preset power until the first humidity value is less than the second preset humidity; if the first humidity value is less than the second preset humidity, continuing to compare the first temperature value measured by the first temperature sensor with the first preset temperature; If the first temperature value is greater than the first preset temperature, the first temperature value measured by the first temperature sensor is continued to be compared with the first preset temperature; wherein, the first preset humidity is greater than the second preset humidity, and the second preset power is less than the first preset power.

3. The crankcase ventilation and dehumidification system according to claim 2, characterized in that: The crankcase ventilation and dehumidification system further includes a second temperature sensor and a first timer, wherein the second temperature sensor is used to detect the engine oil temperature in real time, and the first timer is used to record the working time of the first heating device; The control unit is used for: After the first heating device starts working, the second temperature value measured by the second temperature sensor is compared with the preset oil temperature, and the first timer is controlled to start timing; If the second temperature value is greater than the preset oil temperature, the first heating device is controlled to stop working; if the second temperature value is less than or equal to the preset oil temperature, and the timing result of the first timer does not exceed the first preset duration, the first heating device is controlled to continue heating according to the heating power corresponding to the previous working moment until the first humidity value is less than the second preset humidity; if the second temperature value is less than or equal to the preset oil temperature, and the timing result of the first timer exceeds the first preset duration, the first heating device is controlled to heat according to the third preset power until the first humidity value is less than the second preset humidity; wherein, the third preset power is greater than the first preset power.

4. The crankcase ventilation and dehumidification system according to claim 1, characterized in that: The crankcase ventilation and dehumidification system further includes a second heating device; the crankcase pipeline includes a crankshaft main line, a first branch line, and a second branch line; the first branch line and the second branch line are connected to the engine intake manifold, and the distance between the second branch line and the air inlet of the engine intake manifold is smaller than the distance between the first branch line and the air inlet of the engine intake manifold; The first heating device and the dehumidification module are installed on the crankshaft main line of the tortuous pipeline, the second heating device is connected to the fourth end of the control unit, and the second heating device is installed on the first branch of the tortuous pipeline; the control unit is used to control the working status of the first heating device and the second heating device according to the gas temperature collected by the first temperature sensor and the humidity collected by the humidity sensor.

5. The crankcase ventilation and dehumidification system according to claim 4, characterized in that: The control unit is used for: Compare the first temperature value measured by the first temperature sensor with the first preset temperature and the second preset temperature; if the first temperature value is less than or equal to the first preset temperature and greater than the second preset temperature, compare the first humidity value collected by the humidity sensor with the first preset humidity and the second preset humidity; if the first humidity value is greater than or equal to the first preset humidity, control the first heating device to heat according to the first preset power until the first humidity value is less than the second preset humidity; if the first humidity value is greater than or equal to the second preset humidity and less than the first preset humidity, control the first heating device to heat according to the second preset power until the first humidity value is less than the second preset humidity; if the first humidity value is less than the second preset humidity, continue to compare the first temperature value measured by the first temperature sensor with the first preset temperature and the second preset temperature; If the first temperature value is less than or equal to the second preset temperature, the first humidity value collected by the humidity sensor is compared with the second preset humidity and the third preset humidity; if the first humidity value is greater than or equal to the third preset humidity, the first heating device and the second heating device are controlled to heat according to the first preset power until the first humidity value is less than the second preset humidity; if the first humidity value is less than the third preset humidity and greater than the second preset humidity, the first heating device and the second heating device are controlled to heat according to the second preset power until the first humidity value is less than the second preset humidity; if the first humidity value is less than the second preset humidity, the first temperature value measured by the first temperature sensor is continued to be compared with the first preset temperature and the second preset temperature; If the first temperature value is greater than the first preset temperature, continue to compare the first temperature value measured by the first temperature sensor with the first preset temperature; The first preset humidity is greater than the third preset humidity and greater than the second preset humidity, and the second preset power is less than the first preset power.

6. The crankcase ventilation and dehumidification system according to claim 5, characterized in that: The crankcase ventilation and dehumidification system further includes a second temperature sensor and a first timer, wherein the second temperature sensor is used to detect the engine oil temperature in real time, and the first timer is used to record the working time of the first heating device; The control unit is used for: After the first heating device starts working or the first heating device and the second heating device start working, the second temperature value measured by the second temperature sensor is compared with the preset oil temperature, and the first timer is controlled to start timing; If the second temperature value is greater than the preset oil temperature, the first heating device and the second heating device are controlled to stop working; if the second temperature value is less than or equal to the preset oil temperature, and the timing result of the first timer does not exceed the first preset duration, the first heating device and the second heating device are controlled to continue heating according to the heating power corresponding to the previous working moment until the first humidity value is less than the second preset humidity; if the second temperature value is less than or equal to the preset oil temperature, and the timing result of the first timer exceeds the first preset duration, the first heating device and the second heating device are controlled to heat according to the third preset power until the first humidity value is less than the second preset humidity; wherein, the third preset power is greater than the first preset power.

7. The crankcase ventilation and dehumidification system according to claim 6, characterized in that: The control unit is also used to control the first heating device and the second heating device to stop heating when the timing result of the first timer exceeds a second preset time and the first humidity value is greater than or equal to the second preset humidity; wherein the second preset time is greater than the first preset time.

8. The crankcase ventilation and dehumidification system according to claim 2 or 5, characterized in that: The crankcase ventilation and dehumidification system further includes an alarm module and a second timer, wherein the second timer is used to record a time period during which the first humidity value is greater than a fourth preset humidity value; The control unit is further configured to control the alarm module to send an alarm signal when the first humidity value collected by the humidity sensor is greater than a fourth preset humidity and the timing result of the second timer exceeds a third preset duration.

9. The crankcase ventilation and dehumidification system according to any one of claims 1 to 7, characterized in that: The dehumidification regeneration system further includes a battery, a power supply end of the battery being connected to the first heating device or the first heating device and the second heating device, for supplying power to the first heating device or the first heating device and the second heating device.

10. An engine system, characterized in that: The crankcase ventilation and dehumidification system comprises the crankcase ventilation and dehumidification system according to any one of claims 1 to 9.

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