Engine air inlet system and vehicle

Abstract

The utility model discloses an engine air intake system and a vehicle, the engine air intake system comprises a supercharger, a cooling assembly and a temperature sensing assembly, the cooling assembly is connected with the supercharger through a first connecting pipeline, the cooling assembly is also connected with an engine through a second connecting pipeline, a first valve is arranged on the first connecting pipeline, and a second valve is arranged on the second connecting pipeline. The first valve is connected with the second connecting pipeline; the cooling assembly comprises at least two cooling parts which are sequentially connected, every two adjacent cooling parts are connected through a third connecting pipeline, a second valve is arranged on each third connecting pipeline, and the second valves are connected with the second connecting pipelines. In the embodiment of the utility model, the air compressed by the supercharger can be conveyed to the engine without passing through a cooling piece or only through one cooling piece, so that the air inlet temperature of the engine in a low-temperature environment is improved, and the air inlet temperature of the engine is in a proper temperature range.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to an engine air intake system and a vehicle. Background Art

[0002] At present, the engine intake system includes a supercharger and an intercooler. The supercharger increases the intake volume by compressing the air. The temperature of the air rises after being compressed by the supercharger, and the intercooler cools the air with the increased temperature.

[0003] However, in low temperature environment, the air compressed by the supercharger is at a lower temperature after passing through the intercooler, so that the engine intake temperature is not within the appropriate temperature range. In addition, in medium and low temperature environment, when the supercharger intake includes high-temperature exhaust gas, the temperature difference before and after the air passes through the intercooler is large, which will produce condensed water and affect engine combustion. Utility Model Content

[0004] The utility model provides an engine air intake system and a vehicle, aiming at least to solve the technical problem in the prior art that the air intake temperature of the engine is difficult to control within a suitable temperature range.

[0005] In a first aspect, an embodiment of the utility model provides an engine intake system, comprising a supercharger, a cooling assembly and a temperature sensing assembly, wherein the cooling assembly is connected to the supercharger via a first connecting pipeline, and the cooling assembly is also connected to the engine via a second connecting pipeline, wherein a first valve is provided on the first connecting pipeline, and the first valve is connected to the second connecting pipeline;

[0006] The cooling assembly comprises at least two cooling elements connected in sequence, two adjacent cooling elements are connected via a third connecting pipeline, a second valve is provided on the third connecting pipeline, and the second valve is connected to the second connecting pipeline;

[0007] The temperature sensing component includes a first temperature sensor disposed on the first connecting pipeline, and the first temperature sensor is located between the supercharger and the first valve.

[0008] Optionally, both the first valve and the second valve are three-way valves.

[0009] Optionally, the first valve is connected to the second connecting pipeline via a fourth connecting pipeline, and the second valve is connected to the fourth connecting pipeline via a fifth connecting pipeline;

[0010] The fourth connecting pipeline is connected to the second connecting pipeline through a first three-way joint, and the fifth connecting pipeline is connected to the fourth connecting pipeline through a second three-way joint.

[0011] Optionally, the temperature sensing component further includes a second temperature sensor disposed on the third connecting pipeline, and the second temperature sensor is located between the air outlet of the cooling element and the second valve.

[0012] Optionally, the temperature sensing component further includes a third temperature sensor disposed on the second connecting pipeline, and the third temperature sensor is located between the first three-way connector and the engine.

[0013] Optionally, a controller is further included, and the controller is electrically connected to the temperature sensing component, the first valve and the second valve.

[0014] Optionally, the cooling assembly includes two cooling elements, each of which is an intercooler.

[0015] Optionally, an air filter is further included, the supercharger includes a compressor, the air inlet of the compressor is connected to the air filter through a sixth connecting pipe, and the exhaust port of the compressor is connected to the cooling assembly through the first connecting pipe.

[0016] Optionally, the supercharger includes a turbine, and the exhaust pipe of the engine is connected to the air inlet of the turbine.

[0017] In a second aspect, an embodiment of the utility model provides a vehicle, comprising an engine intake system as described in any one of the above.

[0018] In the embodiment of the utility model, when the ambient temperature is low, the air compressed by the supercharger can be delivered to the engine without passing through a cooling element or only passing through one cooling element, so that the heat in the compressed air is fully utilized to increase the intake temperature of the engine in a low temperature environment, so that the intake temperature of the engine is within a suitable temperature range, and the situation in which the intake temperature of the engine is low due to excessive heat exchange of the intercooler is avoided. In addition, by increasing the intake temperature of the engine in a low temperature environment, the combustion efficiency of the engine can be optimized. In addition, when the air compressed by the supercharger does not pass through a cooling element or only passes through one cooling element, the difference between the temperature of the air compressed by the supercharger and the intake temperature of the engine is small, thereby avoiding the generation of condensed water, and further avoiding the impact on the engine combustion.

[0019] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of an engine air intake system provided in an embodiment of the utility model.

[0021] Reference numerals:

[0022] 1-engine, 2-supercharger, 201-compressor, 202-turbine, 3-cooling element, 4-first valve, 5-second valve, 6-first three-way connector, 7-second three-way connector, 8-first connecting pipeline, 9-second connecting pipeline, 10-third connecting pipeline, 11-fourth connecting pipeline, 12-fifth connecting pipeline, 13-air filter, 14-first temperature sensor, 15-second temperature sensor, 16-third temperature sensor. DETAILED DESCRIPTION

[0023] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0024] At present, the engine air intake system includes a supercharger and an intercooler. The supercharger increases the intake volume by compressing the air. The temperature of the air increases after being compressed by the supercharger, and the intercooler cools down the air with increased temperature. However, in an extremely low temperature environment, the temperature of the air compressed by the supercharger is relatively low after passing through the intercooler, so that the engine's intake temperature is not within a suitable temperature range. In addition, the lower intake temperature will lead to low combustion efficiency of the engine. In addition, in a medium to low temperature environment, when the intake of the supercharger includes high-temperature exhaust gas, the temperature difference of the air before and after passing through the intercooler is relatively large, which will produce condensed water and affect engine combustion. In order to solve the above problems, an embodiment of the utility model provides an engine air intake system and a vehicle.

[0025] First, refer to Figure 1 The embodiment of the utility model discloses an engine intake system, including a supercharger 2, a cooling component and a temperature sensing component. The cooling component is connected to the supercharger 2 through a first connecting pipeline 8, and the cooling component is also connected to the engine 1 through a second connecting pipeline 9. A first valve 4 is provided on the first connecting pipeline 8, and the first valve 4 is connected to the second connecting pipeline 9; the cooling component includes at least two cooling elements 3 connected in sequence, and two adjacent cooling elements 3 are connected through a third connecting pipeline 10. A second valve 5 is provided on the third connecting pipeline 10, and the second valve 5 is connected to the second connecting pipeline 9; the temperature sensing component includes a first temperature sensor 14 provided on the first connecting pipeline 8, and the first temperature sensor 14 is located between the supercharger 2 and the first valve 4.

[0026] Specifically, the engine intake system is applied to a vehicle. The supercharger 2 is used to compress the air and output the compressed air. The supercharger 2 can be a turbocharger. The turbocharger improves the combustion efficiency of the engine by increasing the engine intake pressure and density. The number of cooling parts 3 included in the cooling assembly can be set according to actual needs, such as being set to two, three, four, etc. The cooling assembly preferably includes two cooling parts 3 to simplify the structure of the engine intake system. The types of each cooling part 3 can be the same or different. Each cooling part 3 is preferably an intercooler. Through the first temperature sensor 14, the temperature of the air compressed by the supercharger 2 can be monitored in real time. The first valve 4 and the second valve 5 can both be three-way valves. At this time, the first valve 4 and the second valve 5 both have interface one, interface two and interface three. In other embodiments, the first valve 4 and the second valve 5 can also be a combination of multiple two-way valves.

[0027] The air compressed by the supercharger 2 can enter the engine 1 through different channels. In the first case, the air compressed by the supercharger 2 enters the cooling assembly through the first connecting pipe 8, all the cooling elements 3 in the cooling assembly cool the compressed air, and the cooled air is transported to the engine 1 through the second connecting pipe 9. In the second case, the air compressed by the supercharger 2 enters the cooling assembly through the first connecting pipe 8, a cooling element 3 in the cooling assembly cools the compressed air, and the cooled air enters the second connecting pipe 9 through the second valve 5, and is transported to the engine 1 through the second connecting pipe 9. In the third case, the air compressed by the supercharger 2 enters the second connecting pipe 9 through the first valve 4, and is transported to the engine 1 through the second connecting pipe 9.

[0028] In the embodiment of the utility model, when the ambient temperature is low, the air compressed by the supercharger 2 can be delivered to the engine 1 without passing through the cooling element 3 or only passing through one cooling element 3, so as to make full use of the heat in the compressed air to increase the intake temperature of the engine in the low temperature environment, so that the intake temperature of the engine is within a suitable temperature range, and avoid the situation where the intake temperature of the engine is low due to excessive heat exchange of the intercooler. In addition, by increasing the intake temperature of the engine in the low temperature environment, the combustion efficiency of the engine can be optimized. In addition, when the air compressed by the supercharger 2 does not pass through the cooling element 3 or only passes through one cooling element 3, the difference between the temperature of the air compressed by the supercharger 2 and the intake temperature of the engine is small, thereby avoiding the generation of condensed water, and further avoiding the influence on the engine combustion.

[0029] It should be noted that the engine 1 includes an intake pipe and an exhaust pipe, and the intake temperature of the engine refers to the temperature at the intake pipe of the engine 1 .

[0030] The first valve 4 is connected to the second connecting pipeline 9 through the fourth connecting pipeline 11, and the second valve 5 is connected to the fourth connecting pipeline 11 through the fifth connecting pipeline 12; the fourth connecting pipeline 11 is connected to the second connecting pipeline 9 through the first three-way joint 6, and the fifth connecting pipeline 12 is connected to the fourth connecting pipeline 11 through the second three-way joint 7. The first three-way joint 6 and the second three-way joint 7 are simple in structure and easy to install.

[0031] The first connecting line 8 includes a first connecting section connected to the supercharger 2 and a second connecting section connected to one end of the cooling assembly, the second connecting line 9 includes a third connecting section connected to the engine 1 and a fourth connecting section connected to the other end of the cooling assembly, and the fourth connecting line 11 includes a fifth connecting section connected to the first valve 4 and a sixth connecting section connected to the first three-way connector 6. The third connecting line 10 includes a seventh connecting section connected to the previous cooling element 3 and an eighth connecting section connected to the next cooling element 3.

[0032] The first three-way joint 6 connects the sixth connection section in the fourth connection pipeline 11, the third connection section and the fourth connection section in the second connection pipeline 9. The first joint 1 in the first three-way joint 6 is connected to the sixth connection section, the second joint 2 in the first three-way joint 6 is connected to the fourth connection section, and the third joint 3 in the first three-way joint 6 is connected to the third connection section.

[0033] The second three-way joint 7 connects the fifth connecting pipeline 12, the fifth connecting section and the sixth connecting section in the fourth connecting pipeline 11. The first joint in the second three-way joint 7 is connected to the fifth connecting section, the second joint in the second three-way joint 7 is connected to the fifth connecting pipeline 12, and the third joint in the second three-way joint 7 is connected to the sixth connecting section.

[0034] The first valve 4 connects the fifth connection section in the fourth connection pipeline 11, the first connection section and the second connection section in the first connection pipeline 8. Interface 1 in the first valve 4 is connected to the first connection section, interface 2 in the first valve 4 is connected to the second connection section, and interface 3 in the first valve 4 is connected to the fifth connection section. When interface 1 and interface 2 in the first valve 4 are opened and interface 3 is closed, interface 1 is connected to interface 2, the first connection pipeline 8 is connected to itself, and the air compressed by the supercharger 2 passes through the cooling element 3. When interface 1 and interface 3 in the first valve 4 are opened and interface 2 is closed, interface 1 is connected to interface 3, the first connection pipeline 8 is connected to the fourth connection pipeline 11, and the air compressed by the supercharger 2 does not pass through the cooling element 3.

[0035] The second valve 5 is connected to the fifth connecting line 12, the seventh connecting section and the eighth connecting section in the third connecting line 10. Interface 1 in the second valve 5 is connected to the seventh connecting section, interface 2 in the second valve 5 is connected to the eighth connecting section, and interface 3 in the second valve 5 is connected to the fifth connecting line 12. When interface 1 and interface 2 in the second valve 5 are opened and interface 3 is closed, interface 1 is connected to interface 2. At this time, two cooling elements 3 are connected through the third connecting line 10, and the air compressed by the supercharger 2 can pass through the two cooling elements 3. When interface 1 and interface 3 in the second valve 5 are opened and interface 2 is closed, interface 1 is connected to interface 3. At this time, the seventh connecting section is connected to the fifth connecting line 12, and the air compressed by the supercharger 2 can pass through one cooling element 3 and then be transported to the engine 1 through the fifth connecting line 12, the fourth connecting line 11 and the second connecting line 9.

[0036] The temperature sensing component further includes a second temperature sensor 15 disposed on the third connecting pipeline 10, and the second temperature sensor 15 is located between the air outlet of the cooling element 3 and the second valve 5. The second temperature sensor 15 can monitor the temperature of the air cooled by the previous cooling element 3.

[0037] The temperature sensing component further includes a third temperature sensor 16 disposed on the second connecting pipeline 9, and the third temperature sensor 16 is located between the first three-way connector 6 and the engine 1. The third temperature sensor 16 can monitor the temperature of the air before entering the engine 1.

[0038] The engine air intake system provided by the embodiment of the utility model further includes a controller, which is electrically connected to the temperature sensing component, the first valve 4 and the second valve 5 .

[0039] Specifically, the first temperature sensor 14, the second temperature sensor 15 and the third temperature sensor 16 are all electrically connected to the controller. The controller is used to control the opening and closing of each interface in the first valve 4 and the opening and closing of each interface in the second valve 5 according to the temperature monitored by the first temperature sensor 14, the temperature monitored by the second temperature sensor 15 and the temperature monitored by the third temperature sensor 16. Through the controller, automatic control of the first valve 4 and the second valve 5 can be achieved.

[0040] The engine air intake system provided by the embodiment of the utility model further includes an air filter 13, the supercharger 2 includes a compressor 201, the air intake of the compressor 201 is connected to the air filter 13 through a sixth connecting line, and the exhaust of the compressor 201 is connected to the cooling assembly through a first connecting line 8. The air filter 13 can filter the air entering the supercharger 2 to prevent dust and impurities from entering the engine 1.

[0041] The supercharger 2 includes a turbine 202 , and an exhaust pipe of the engine 1 is connected to an air inlet of the turbine 202 .

[0042] Specifically, the compressor 201 and the turbine 202 in the supercharger 2 are connected together through an intermediate shaft. The supercharger 2 includes the compressor 201 and the turbine 202, that is, the supercharger 2 is a turbocharger. The working principle of the turbocharger is: high-temperature and high-pressure exhaust gas enters the turbine, the exhaust gas expands in the turbine, drives the turbine to rotate, and the compressor uses the turbine work to compress the air entering the compressor, and the compressed air enters the engine.

[0043] The control method of the above engine intake system may include:

[0044] S1, determining whether the temperature monitored by the first temperature sensor 14 is less than or equal to a first preset temperature;

[0045] S2, if the temperature monitored by the first temperature sensor 14 is less than or equal to the first preset temperature, the interface 1 and the interface 3 of the first valve 4 are controlled to be opened, the interface 2 is closed, and the interface 2 and the interface 3 of the second valve 5 are controlled to be closed;

[0046] S3, if the temperature monitored by the first temperature sensor 14 is greater than the first preset temperature, determine whether the temperature monitored by the second temperature sensor 15 is less than or equal to the first preset temperature;

[0047] S4, if the temperature monitored by the second temperature sensor 15 is less than or equal to the first preset temperature, the interface 1 and the interface 2 of the first valve 4 are controlled to be opened, and the interface 3 is controlled to be closed, and the interface 1 and the interface 3 of the second valve 5 are controlled to be opened, and the interface 2 is controlled to be closed;

[0048] S5, if the temperature monitored by the second temperature sensor 15 is greater than the first preset temperature, the interface 1 and the interface 2 of the first valve 4 are controlled to be opened, and the interface 3 is controlled to be closed, and the interface 1 and the interface 2 of the second valve 5 are controlled to be opened, and the interface 3 is controlled to be closed.

[0049] Preferably, the control method of the engine intake system may further include:

[0050] S6, determining whether the temperature monitored by the third temperature sensor 16 is greater than or equal to a second preset temperature;

[0051] S7, if the temperature monitored by the third temperature sensor 16 is greater than or equal to the second preset temperature, control the interface 1 and interface 2 of the first valve 4 to open and interface 3 to close, and control the interface 1 and interface 2 of the second valve 5 to open and interface 3 to close.

[0052] The second preset temperature is greater than the first preset temperature, and the first preset temperature and the second preset temperature can be set according to actual needs, such as being set to 40°C-50°C.

[0053] In a second aspect, the embodiment of the utility model further discloses a vehicle, comprising any one of the above engine air intake systems. Since the vehicle comprises the above engine air intake system, it also has the beneficial effects of the above engine air intake system, which will not be described in detail here.

[0054] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0055] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, which all fall within the protection of the utility model.

Claims

1. An engine air intake system, characterized in that: The invention comprises a supercharger, a cooling assembly and a temperature sensing assembly, wherein the cooling assembly is connected to the supercharger through a first connecting pipeline, and the cooling assembly is also connected to the engine through a second connecting pipeline, and a first valve is arranged on the first connecting pipeline, and the first valve is connected to the second connecting pipeline; The cooling assembly comprises at least two cooling elements connected in sequence, two adjacent cooling elements are connected via a third connecting pipeline, a second valve is provided on the third connecting pipeline, and the second valve is connected to the second connecting pipeline; The temperature sensing component includes a first temperature sensor disposed on the first connecting pipeline, and the first temperature sensor is located between the supercharger and the first valve.

2. The engine intake system according to claim 1, characterized in that: The first valve and the second valve are both three-way valves.

3. The engine air intake system according to claim 1 or 2, characterized in that: The first valve is connected to the second connecting pipeline via a fourth connecting pipeline, and the second valve is connected to the fourth connecting pipeline via a fifth connecting pipeline; The fourth connecting pipeline is connected to the second connecting pipeline through a first three-way joint, and the fifth connecting pipeline is connected to the fourth connecting pipeline through a second three-way joint.

4. The engine intake system according to claim 1 or 2, characterized in that: The temperature sensing component further includes a second temperature sensor disposed on the third connecting pipeline, and the second temperature sensor is located between the air outlet of the cooling element and the second valve.

5. The engine air intake system according to claim 3, characterized in that: The temperature sensing component further includes a third temperature sensor disposed on the second connecting pipeline, and the third temperature sensor is located between the first three-way connector and the engine.

6. The engine air intake system according to claim 1, characterized in that: It also includes a controller, which is electrically connected to the temperature sensing component, the first valve and the second valve.

7. The engine intake system according to claim 1, characterized in that: The cooling assembly includes two cooling elements, each of which is an intercooler.

8. The engine air intake system according to claim 1, characterized in that: It also includes an air filter, the supercharger includes a compressor, the air inlet of the compressor is connected to the air filter through a sixth connecting pipeline, and the exhaust port of the compressor is connected to the cooling component through the first connecting pipeline.

9. The engine air intake system according to claim 1, characterized in that: The supercharger includes a turbine, and the exhaust pipe of the engine is connected to the air inlet of the turbine.

10. A vehicle, characterized in that: An engine intake system comprising any one of claims 1 to 9.

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