Air intake system of automobile and automobile

Abstract

The present application discloses an air intake system of an automobile and an automobile, comprising: an engine, having an intake manifold and a crankcase, the crankcase having a crankshaft air outlet; an air filter, having an air filter intake port and an air filter outlet; a supercharger, having a supercharger inlet and a supercharger outlet, the supercharger inlet being connected to the air filter outlet and the crankshaft air outlet respectively; an intercooler, having an intercooler inlet and an intercooler outlet, the intercooler inlet being connected to the supercharger outlet, and the intercooler outlet being connected to the intake manifold; a bypass pipe, having a first end and a second end, the first end being connected to the supercharger outlet, and the second end being connected to the intake manifold; a first throttle valve, arranged between the supercharger outlet and the intercooler inlet; a second throttle valve, arranged between the supercharger outlet and the first end of the bypass pipe; when the temperature of the air filter intake port is lower than a first preset temperature and the temperature of the intake manifold is lower than a second preset temperature, the first throttle valve is closed, the second throttle valve is opened, and the oil and water discharged from the crankcase will not pass through the intercooler.

Description

Technical Field

[0001] The present application belongs to the field of vehicle technology, and specifically relates to an air intake system of a vehicle and a vehicle. Background Art

[0002] In the related art, turbocharged engines are widely used in automobiles. When the vehicle is at low speed and low load, the air filtered by the air filter flows to the intake manifold through the supercharger and intercooler in turn, providing fresh air for the vehicle's engine combustion, and also replenishing air for the crankcase ventilation system; when the vehicle is at high speed and high load, the crankshaft ventilation system discharges hot waste oil and gas (mainly including fuel gas, water vapor and exhaust gas) to the intake system. Specifically, the oil and gas enter the supercharger intake pipe through the crankcase outlet pipe, and enter the intercooler together with the filtered air through the supercharger.

[0003] However, when the ambient temperature is very low (for example, below -20°C), if the gas circulating in the intercooler contains oil and water, it will freeze in the intercooler pipes, causing the cooling pipes of the intercooler to be blocked, thereby causing a decrease in the power performance of the entire vehicle. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide an automobile air intake system and an automobile, which can solve the problem that when the ambient temperature is very low, if the gas circulating in the intercooler contains oil and water, it will freeze in the intercooler pipe, causing the cooling pipe of the intercooler to be blocked.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application provides an air intake system for a vehicle, comprising:

[0007] An engine having an intake manifold and a crankcase, wherein the crankcase has a crankshaft outlet;

[0008] An air filter having an air filter inlet and an air filter outlet;

[0009] A supercharger having a supercharger inlet and a supercharger outlet, wherein the supercharger inlet is communicated with the air filter outlet and the crankshaft outlet respectively;

[0010] an intercooler having an intercooler inlet and an intercooler outlet, wherein the intercooler inlet is in communication with the supercharger outlet, and the intercooler outlet is in communication with the intake manifold;

[0011] A bypass pipe having a first end and a second end, wherein the first end is communicated with the supercharger outlet, and the second end is communicated with the intake manifold;

[0012] A first throttle valve is disposed between the outlet of the supercharger and the inlet of the intercooler;

[0013] a second throttle valve, disposed between the outlet of the supercharger and the first end of the bypass pipe;

[0014] When the temperature of the air filter inlet is lower than a first preset temperature and the temperature of the intake manifold is lower than a second preset temperature, the first throttle valve is closed and the second throttle valve is opened; when the temperature of the air filter inlet is higher than the first preset temperature or the temperature of the intake manifold is higher than the second preset temperature, the first throttle valve is opened and the second throttle valve is closed.

[0015] Further, the engine includes a control unit;

[0016] The control unit is electrically connected to the first throttle valve and the second throttle valve respectively, and the control unit is used to control the opening and closing of the first throttle valve and the second throttle valve.

[0017] Furthermore, the air intake system of the automobile further comprises: a temperature sensor and an air intake pressure temperature sensor;

[0018] The temperature sensor is disposed at the air filter inlet, the temperature sensor is electrically connected to the control unit, and the temperature sensor is used to detect the temperature of the air filter inlet and send it to the control unit;

[0019] The intake pressure temperature sensor is arranged on the intake manifold, and the intake pressure temperature sensor includes a temperature detection unit, and the temperature detection unit is electrically connected to the control unit, and the temperature detection unit is used to detect the temperature of the intake manifold and send it to the control unit.

[0020] Furthermore, the intake air pressure and temperature sensor further comprises: a pressure detection unit;

[0021] The pressure detection unit is used to detect the pressure of the intake manifold;

[0022] The control unit is electrically connected to the pressure detection unit, and the control unit is also used to calculate the intake volume of the intake manifold according to the pressure detected by the pressure detection unit. When the intake volume meets the preset intake volume, and the temperature of the air filter inlet is lower than the first preset temperature, and the temperature of the intake manifold is lower than the second preset temperature, the first throttle valve is controlled to be closed and the second throttle valve is controlled to be opened. When the temperature of the air filter inlet is higher than the first preset temperature, or the temperature of the intake manifold is higher than the second preset temperature, or the intake volume does not meet the preset intake volume, the first throttle valve is controlled to be opened and the second throttle valve is controlled to be closed.

[0023] Furthermore, the first preset temperature is -20°C, and the second preset temperature is 55°C.

[0024] Furthermore, the air intake system of the automobile further comprises: a first three-way pipe;

[0025] The first three-way pipe comprises a first inlet end, a first outlet end and a second outlet end, wherein the first inlet end is communicated with the first outlet end and the second outlet end respectively;

[0026] The first inlet end is communicated with the supercharger outlet, the first outlet end is communicated with the intercooler inlet, and the second outlet end is communicated with the first end of the bypass pipe.

[0027] Further, the first throttle valve is arranged on the first outlet end;

[0028] The second throttle valve is arranged on the second outlet end, or on the first end of the bypass pipe.

[0029] Furthermore, the air intake system of the automobile further comprises: a second three-way pipe;

[0030] The second three-way pipe comprises a second inlet end, a third inlet end and a third outlet end, and the third outlet end is communicated with the second inlet end and the third inlet end respectively;

[0031] The second inlet end is communicated with the second end of the bypass pipe, the third inlet end is communicated with the intercooler outlet, and the third outlet end is communicated with the intake manifold.

[0032] Furthermore, the air intake system of the automobile further comprises: a third three-way pipe;

[0033] The third three-way pipe comprises a fourth inlet end, a fifth inlet end and a fourth outlet end, and the fourth outlet end is connected to the fourth inlet end and the fifth inlet end respectively;

[0034] The fourth inlet end is communicated with the crankshaft outlet, the fifth inlet end is communicated with the air filter outlet, and the fourth outlet end is communicated with the supercharger inlet.

[0035] The air intake system of the automobile described in the embodiment of the present application has at least the following advantages:

[0036] In the embodiment of the present application, a bypass pipe is added between the supercharger outlet and the intake manifold of the engine, a first throttle valve is arranged between the supercharger outlet and the intercooler inlet, and a second throttle valve is arranged between the supercharger outlet and the first end of the bypass pipe. When the temperature of the air filter inlet is lower than the first preset temperature and the temperature of the intake manifold is lower than the second preset temperature, the first throttle valve is closed and the second throttle valve is opened. At this time, the gas flowing out of the supercharger outlet flows into the intake manifold through the bypass pipe. Compared with the prior art, when the ambient temperature is very low, the oil and water discharged from the crankcase will not pass through the intercooler. In this way, the blockage of the cooling pipeline of the intercooler caused by the freezing of oil and water in the intercooler pipeline is avoided, thereby avoiding the decline in the power performance of the whole vehicle.

[0037] In a second aspect, an embodiment of the present application provides a car, specifically including the air intake system of the above-mentioned car.

[0038] The advantages of the automobile are the same as the advantages of the air intake system of the automobile, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a structural block diagram of the intake system described in an embodiment of the present application;

[0040] Figure 2 is a schematic diagram of the three-dimensional structure of the air intake system according to an embodiment of the present application;

[0041] Figure 3 is a schematic diagram of a partial three-dimensional structure of an intake system according to an embodiment of the present application;

[0042] Description of reference numerals:

[0043] 10-engine, 11-intake manifold, 12-crankcase, 121-crankshaft outlet pipe, 13-control unit, 20-air filter, 21-air filter outlet pipe, 22-air filter inlet pipe, 30-supercharger, 31-supercharged inlet pipe, 32-supercharged outlet pipe, 40-bypass pipe, 50-first throttle valve, 60-second throttle valve, 70-intercooler, 71-intercooler inlet pipe, 72-intercooler outlet pipe, 80-temperature sensor, 90-first three-way pipe, 91-first inlet end, 92-first outlet end, 93-second outlet end, 100-second three-way pipe, 101-second inlet end, 102-third inlet end, 103-third outlet end, 200-third three-way pipe, 201-fourth inlet end, 202-fifth inlet end, 203-fourth outlet end, 300-intake pressure temperature sensor. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here. In addition, the "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally represents that the objects associated with each other are in an "or" relationship.

[0046] The following describes in detail the air intake system of the automobile and the automobile provided in the embodiments of the present application through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0047] In the embodiment of the present application, an air intake system for a vehicle is proposed, referring to Figures 1 to 3 The air intake system of the automobile may specifically include: an engine 10, having an intake manifold 11 and a crankcase 12, the crankcase 12 having a crankshaft outlet; an air filter 20, having an air filter inlet and an air filter outlet; a supercharger 30, having a supercharger 30 inlet and a supercharger 30 outlet, the supercharger 30 inlet being connected to the air filter outlet and the crankshaft outlet respectively; an intercooler 70, having an intercooler inlet and an intercooler outlet, the intercooler inlet being connected to the supercharger 30 outlet, the intercooler outlet being connected to the intake manifold 11; a bypass pipe 40, having a first end and a second end, the first end being connected to the supercharger 30 outlet; 30 outlet is connected, and the second end is connected with the intake manifold 11; the first throttle valve 50 is arranged between the outlet of the supercharger 30 and the inlet of the intercooler; the second throttle valve 60 is arranged between the outlet of the supercharger 30 and the first end of the bypass pipe 40; when the temperature of the air filter inlet is lower than the first preset temperature, and the temperature of the intake manifold 11 is lower than the second preset temperature, the first throttle valve 50 is closed and the second throttle valve 60 is opened; when the temperature of the air filter inlet is higher than the first preset temperature, or the temperature of the intake manifold 11 is higher than the second preset temperature, the first throttle valve 50 is opened and the second throttle valve 60 is closed. Compared with the prior art, when the ambient temperature is very low, the oil and water discharged from the crankcase 12 will not pass through the intercooler 70, but enter the intake manifold 11 of the engine 10 through the bypass pipe 40, so that the cooling pipeline of the intercooler 70 is blocked due to the freezing of the oil and water in the pipeline of the intercooler 70, thereby avoiding the reduction of the power performance of the whole vehicle.

[0048] Specifically, if Figure 1 and Figure 2 As shown, the oil gas generated by the crankcase 12 of the engine 10 enters the inlet of the supercharger 30 together with the air filtered by the air filter 20. In actual application, the air outlet of the crankcase 12 is connected to the crankshaft outlet pipe 121, and the air outlet of the crankcase 12 is connected to the inlet of the supercharger 30 through the crankshaft outlet pipe 121.

[0049] Specifically, if Figures 1 to 3 As shown, the air filter 20 is mainly used to remove particulate impurities in the air to prevent air with impurity particles from entering between the piston and the cylinder and causing serious "cylinder pulling" phenomenon, thereby improving the service life of the cylinder of the engine 10. In actual application, the air filter 20 has an air filter inlet and an air filter outlet. The air filter outlet is usually connected to an air filter outlet pipe 21, and the air inlet is usually connected to an air filter inlet pipe 22. The air enters the air filter 20 through the air filter inlet pipe 22 and the air filter inlet in turn for filtration, and the filtered air enters the supercharger inlet through the air filter outlet and the air filter outlet pipe 21 in turn.

[0050] Specifically, the supercharger 30, which can also be called the intake supercharger 30 of the engine 10, compresses the air before entering the cylinder of the engine 10 to increase the density of the air, so that more air can be filled into the cylinder, thereby increasing the engine power. At the same time, since the mixed combustion regulation of the engine is improved, the combustion efficiency is improved, and the effect of saving fuel and reducing emissions can also be achieved. Figures 1 to 3 As shown, the supercharger 30 has a supercharger inlet and a supercharger outlet. The oil and gas generated by the crankcase 12 of the engine 10 enter the supercharger inlet together with the air filtered by the air filter 20, and are discharged from the supercharger outlet after being supercharged by the supercharger 30. In practical applications, the supercharger 30 inlet is connected with a supercharger inlet pipe 31, the crankshaft outlet is connected to the supercharger 30 inlet through the crankshaft outlet pipe 121 and the supercharger inlet pipe 31 in turn, and the air filter 20 outlet is connected to the supercharger 30 inlet through the air filter outlet pipe 21 and the supercharger inlet pipe 31 in turn. Among them, the supercharger 30 can be one of an exhaust gas turbocharger, a mechanical turbocharger and an electrically assisted turbocharger. The specific type of the supercharger is not limited in this embodiment and can be selected according to actual needs.

[0051] Specifically, if Figures 1 to 3As shown, the intercooler 70 has an intercooler inlet and an intercooler outlet, the intercooler inlet is connected to the supercharger outlet, and the intercooler outlet is connected to the intake manifold 11, that is, the supercharged gas enters the intake manifold 11 through the intercooler 70, and then enters the cylinder of the engine 10. The intercooler 70 is used to reduce the temperature of the supercharged high-temperature air to reduce the heat load of the engine 10, increase the intake volume, and thus increase the power of the engine 10.

[0052] Specifically, if Figures 1 to 3 As shown, compared with the prior art, this embodiment adds a bypass pipe 40 , which has a first end and a second end. The first end of the bypass pipe 40 is communicated with the supercharger outlet, and the second end of the bypass pipe 40 is communicated with the intake manifold 11 .

[0053] Specifically, if Figure 1 As shown, compared with the prior art, this embodiment adds a first throttle valve 50 and a second throttle valve 60. The first throttle valve 50 is arranged between the outlet of the supercharger and the inlet of the intercooler, and the second throttle valve 60 is arranged between the outlet of the supercharger and the first end of the bypass pipe.

[0054] Specifically, when the temperature of the air filter inlet (which can be considered as the ambient temperature) is lower than the first preset temperature and the temperature of the intake manifold 11 is lower than the second preset temperature, the gas flowing through the intercooler 70 contains oil and water and freezes in the intercooler pipe. In this case, the first throttle valve 50 is closed and the second throttle valve 60 is opened. Figure 1 As shown, air passes through the air filter 20, the supercharger 30, and the bypass pipe 40 in sequence and enters the intake manifold 11 of the engine 10, and then enters the cylinder of the engine 10. In this way, the blockage of the cooling line of the intercooler caused by the freezing of oil and water in the intercooler pipe is avoided, thereby avoiding the decline of the power performance of the whole vehicle.

[0055] Specifically, when the temperature of the air filter inlet is higher than the first preset temperature, or the temperature of the intake manifold 11 is higher than the second preset temperature, the gas flowing through the intercooler does not contain oil and water and the condition of ice forming in the intercooler 70 pipe is not met. In this case, the first throttle valve 50 is opened and the second throttle valve 60 is closed. Figure 1 As shown, air passes through the air filter 20, the supercharger 30, and the intercooler 70 in sequence and enters the intake manifold 11 of the engine 10, and then enters the cylinder of the engine 10, so that the high-temperature air temperature after the supercharging is reduced by passing through the intercooler 70, so as to reduce the heat load of the engine 10, increase the intake volume, and then increase the power of the engine 10, thereby improving the power performance of the whole vehicle.

[0056] It should be noted that the first preset temperature can be -20°C, and the second preset temperature can be 55°C. Of course, the first preset temperature and the second preset temperature can also be other temperature values ​​or within a temperature range. For example, the first preset temperature can be between -15 and -20°C, and the second preset temperature can be between 45 and 55°C. This embodiment does not limit the specific numerical values ​​of the first preset temperature and the second preset temperature, and can be set according to actual needs.

[0057] Specifically, the first throttle valve 50 and the second throttle valve 60 may be butterfly valves or other throttle valves with the same function as butterfly valves. The specific selection of the throttle valves is not limited in this embodiment, and the specific selection may be made according to the actual situation. The opening of the two throttle valves may be fully opened or partially opened, which needs to be determined by detailed calibration of the calibration strategy.

[0058] In the embodiments of the present application, Figure 1 As shown, the engine 10 includes a control unit 13; the control unit 13 is electrically connected to the first throttle valve 50 and the second throttle valve 60 respectively, and the control unit 13 is used to control the opening and closing of the first throttle valve 50 and the second throttle valve 60.

[0059] Specifically, if Figure 1 As shown, the engine 10 is provided with a control unit 13, and the control unit 13 is electrically connected to the first throttle valve 50 and the second throttle valve 60 respectively, and the control unit 13 is used to control the opening and closing of the first throttle valve 50 and the second throttle valve 60. When the temperature of the air filter inlet is lower than the first preset temperature, and the temperature of the intake manifold 11 is lower than the second preset temperature, the control unit 13 controls the first throttle valve 50 to close and the second throttle valve 60 to open; when the temperature of the air filter inlet is higher than the first preset temperature, or the temperature of the intake manifold 11 is higher than the second preset temperature, the control unit 13 controls the first throttle valve 50 to open and the second throttle valve 60 to close. It should be noted that the opening of the two throttle valves can also be controlled by the control unit 13.

[0060] In the embodiments of the present application, Figure 1 As shown, the intake system of the automobile also includes: a temperature sensor 80 and an intake pressure temperature sensor 300; the temperature sensor 80 is arranged at the air filter inlet, the temperature sensor 80 is electrically connected to the control unit 13, and the temperature sensor 80 is used to detect the temperature of the air filter inlet and send it to the control unit 13; the intake pressure temperature sensor 300 is arranged on the intake manifold 11, the intake pressure temperature sensor 300 includes a temperature detection unit, the temperature detection unit is electrically connected to the control unit 13, and the temperature detection unit is used to detect the temperature of the intake manifold 11 and send it to the control unit 13.

[0061] Specifically, if Figure 1As shown, in this embodiment, a temperature sensor 80 is installed at the air filter inlet to detect the external environment temperature. If the air filter inlet is connected to the air filter inlet pipe 22, the temperature sensor 80 is installed at the end of the air filter inlet pipe 22 away from the air filter inlet. The temperature sensor 80 is electrically connected to the control unit 13 of the engine 10, and the control unit 13 of the engine 10 receives the temperature detected by the temperature sensor 80 in real time.

[0062] Specifically, in this embodiment, an intake air pressure temperature sensor 300 is installed on the intake manifold 11 of the engine 10. The intake air pressure temperature sensor 300 includes a temperature detection unit, and the temperature detection unit is used to detect the temperature of the intake manifold 11. The intake air pressure temperature sensor 300 is electrically connected to the control unit 13 of the engine 10, and the control unit 13 of the engine 10 receives the temperature detected by the temperature detection unit of the intake air pressure temperature sensor 300 in real time.

[0063] Specifically, the temperature sensor 80 sends the real-time detected temperature of the air filter inlet to the control unit 13, and the temperature detection unit of the intake pressure temperature sensor 300 sends the real-time detected temperature of the intake manifold 11 to the control unit 13. The control unit 13 compares the temperature detected by the temperature sensor 80 with the pre-stored first preset temperature, and compares the received temperature detected by the temperature detection unit with the pre-stored second preset temperature. When the temperature of the air filter inlet is lower than the first preset temperature and the temperature of the intake manifold 11 is lower than the second preset temperature, the control unit 13 controls the first throttle valve 50 to close and the second throttle valve 60 to open. When the temperature of the air filter inlet is higher than the first preset temperature, or the temperature of the intake manifold 11 is higher than the second preset temperature, the control unit 13 controls the first throttle valve 50 to open and the second throttle valve 60 to close.

[0064] In the embodiment of the present application, the intake pressure and temperature sensor 300 also includes: a pressure detection unit; the pressure detection unit is used to detect the pressure of the intake manifold 11; the control unit 13 is electrically connected to the pressure detection unit, and the control unit 13 is also used to calculate the intake volume of the intake manifold 11 according to the pressure detected by the pressure detection unit. When the intake volume meets the preset intake volume, and the temperature of the air filter inlet is lower than the first preset temperature, and the temperature of the intake manifold 11 is lower than the second preset temperature, the first throttle valve 50 is controlled to be closed and the second throttle valve 60 is opened. When the temperature of the air filter inlet is higher than the first preset temperature, or the temperature of the intake manifold 11 is higher than the second preset temperature, or the intake volume does not meet the preset intake volume, the first throttle valve 50 is controlled to be opened and the second throttle valve 60 is closed.

[0065] Specifically, the intake pressure and temperature sensor 300 further includes a pressure detection unit, which is used to detect the pressure of the intake manifold 11. The control unit 13 of the engine 10 is electrically connected to the pressure detection unit. The control unit 13 is specifically used to calculate the intake amount of the intake manifold 11 according to the pre-stored relationship after receiving the pressure of the intake manifold 11 detected by the pressure detection unit. When the intake amount meets the preset intake amount, the temperature of the air filter inlet is lower than the first preset temperature, and the temperature of the intake manifold 11 is lower than the second preset temperature, the first throttle valve 50 is controlled to be closed and the second throttle valve 60 is controlled to be opened. When the temperature of the air filter inlet is higher than the first preset temperature, or the temperature of the intake manifold 11 is higher than the second preset temperature, or the intake amount does not meet the preset intake amount, the first throttle valve 50 is controlled to be opened and the second throttle valve 60 is controlled to be closed. The preset intake amount is pre-stored in the control unit 13 in advance. The specific value of the preset intake amount can be set according to the specific type and actual situation of the engine 10. The specific value lower than the preset intake amount is not limited in this embodiment.

[0066] In actual application, a throttle is provided between the intake manifold 11 and the cylinder of the engine 10, and the intake pressure sensor (the pressure detection unit of this embodiment) is generally provided between the throttle and the cylinder. The intake pressure sensor detects the absolute pressure of the intake manifold 11 after the throttle. It detects the change of the absolute pressure in the intake manifold 11 according to the speed and load of the engine 10, and then converts it into a signal voltage and sends it to the control unit 13 of the engine 10. The control unit 13 calculates the intake volume according to the size of the signal voltage, and controls the size of the basic injection volume and the basic ignition advance angle. It should be noted that the control unit 13 calculates the intake volume according to the pressure on the side of the intake pressure sensor device, which is a prior art, and this embodiment will not be repeated.

[0067] It should be noted that the intake air pressure temperature sensor 300 of the present embodiment integrates the intake air temperature sensor 80 and the intake air pressure sensor into one body. The temperature detection unit of the present embodiment has the same function as the intake air temperature sensor 80, and the pressure detection unit has the same function as the intake air pressure sensor. In addition to the integrated intake air pressure temperature sensor 300, the present embodiment can also use a separate intake air temperature sensor 80 and an intake air pressure sensor. Both the intake air temperature sensor 80 and the intake air pressure sensor are arranged on the intake manifold 11 and are electrically connected to the control unit 13 respectively. In addition, the intake air pressure sensor can also be replaced by an intake air flow sensor, which can directly detect the flow of the intake manifold 11.

[0068] In the embodiment of the present application, the intake system of the automobile also includes: a first three-way pipe 90; the first three-way pipe 90 includes a first inlet end 91, a first outlet end 92 and a second outlet end 93, and the first inlet end 91 is connected to the first outlet end 92 and the second outlet end 93 respectively; the first inlet end 91 is connected to the outlet of the supercharger 30, the first outlet end 92 is connected to the inlet of the intercooler, and the second outlet end 93 is connected to the first end of the bypass pipe 40.

[0069] Specifically, if Figure 1 As shown, in this embodiment, a first three-way pipe 90 is added to the outlet of the supercharger 30. In actual application, the outlet of the supercharger 30 is connected to the supercharged outlet pipe 32, and the inlet of the intercooler is connected to the intercooler intake pipe 71. The first inlet end 91 of the first three-way pipe 90 is connected to the outlet of the supercharger 30 through the supercharged outlet pipe 32, the first outlet end 92 is connected to the inlet of the intercooler 70 through the intercooler intake pipe 71, and the second outlet end 93 is connected to the first end of the bypass pipe 40.

[0070] In the embodiment of the present application, the first throttle valve 50 is disposed on the first outlet end 92 ; the second throttle valve 60 is disposed on the second outlet end 93 , or on the first end of the bypass pipe 40 .

[0071] Specifically, the first throttle valve 50 is fixedly arranged at the first outlet end 92 or the position of the intercooler intake pipe 71 close to the first outlet end 92, and the second throttle valve 60 is fixedly arranged at the second outlet end 93 or the first end of the bypass pipe 40. In this way, when the first throttle valve 50 is closed and the second throttle valve 60 is opened, the gas flowing out of the outlet of the supercharger 30 can all flow into the intake manifold 11 through the bypass pipe 40. Compared with the prior art, the blockage of the cooling pipeline of the intercooler 70 caused by the freezing of oil and water in the pipeline of the intercooler 70 is avoided, thereby avoiding the decline of the power performance of the whole vehicle. In addition, when the second throttle valve 60 is closed and the first throttle valve 50 is opened, the gas flowing out of the outlet of the supercharger 30 can all flow into the intake manifold 11 through the intercooler 70, which can reduce the temperature of the high-temperature air after supercharging more quickly, reduce the heat load of the engine 10, increase the intake volume, and then increase the power of the engine 10, and improve the power performance of the whole vehicle.

[0072] In the embodiment of the present application, the intake system of the automobile also includes: a second three-way pipe 100; the second three-way pipe 100 includes a second inlet end 101, a third inlet end 102 and a third outlet end 103, and the third outlet end 103 is connected to the second inlet end 101 and the third inlet end 102 respectively; the second inlet end 101 is connected to the second end of the bypass pipe 40, the third inlet end 102 is connected to the intercooler outlet, and the third outlet end 103 is connected to the intake manifold 11.

[0073] Specifically, since the second end of the bypass pipe 40 and the outlet of the intercooler are respectively connected to the end of the intake manifold 11 away from the cylinder of the engine 10, Figure 1 As shown, in this embodiment, a second three-way pipe 100 is provided, a second inlet end 101 of the second three-way pipe 100 is connected to the second end of the bypass pipe 40, a third inlet end 102 is connected to the intercooler outlet through the intercooler outlet pipe 72, and a third outlet end 103 is connected to an end of the intake manifold 11 away from the cylinder of the engine 10.

[0074] In the embodiment of the present application, the intake system of the automobile also includes: a third three-way pipe 200; the third three-way pipe 200 includes a fourth inlet end 201, a fifth inlet end 202 and a fourth outlet end 203, and the fourth outlet end 203 is connected to the fourth inlet end 201 and the fifth inlet end 202 respectively; the fourth inlet end 201 is connected to the crankshaft outlet, the fifth inlet end 202 is connected to the air filter outlet, and the fourth outlet end 203 is connected to the inlet of the supercharger 30.

[0075] Specifically, since the crankshaft outlet and the air filter outlet are respectively connected to the inlet of the supercharger 30, Figure 1 As shown, in this embodiment, a third three-way pipe 200 is provided, and the fourth inlet end 201 of the third three-way pipe 200 is connected to the crankshaft outlet through the crankshaft outlet pipe 121, the fifth inlet end 202 is connected to the air filter outlet through the air filter outlet pipe 21, and the fourth outlet end 203 is connected to the inlet of the supercharger 30 through the boost intake pipe 31.

[0076] In summary, the air intake system of the automobile described in the embodiment of the present application has at least the following advantages:

[0077] In the embodiment of the present application, a bypass pipe is added between the supercharger outlet and the intake manifold of the engine, a first throttle valve is arranged between the supercharger outlet and the intercooler inlet, and a second throttle valve is arranged between the supercharger outlet and the first end of the bypass pipe. When the temperature of the air filter inlet is lower than the first preset temperature and the temperature of the intake manifold is lower than the second preset temperature, the first throttle valve is closed and the second throttle valve is opened. At this time, the gas flowing out of the supercharger outlet flows into the intake manifold through the bypass pipe. Compared with the prior art, when the ambient temperature is very low, the oil and water discharged from the crankcase will not pass through the intercooler. In this way, the blockage of the cooling pipeline of the intercooler caused by the freezing of oil and water in the intercooler pipeline is avoided, thereby avoiding the decline in the power performance of the whole vehicle.

[0078] An embodiment of the present application also provides an automobile, which may specifically include: the above-mentioned air intake system.

[0079] Specifically, the automobile includes the above-mentioned air intake system, and the specific structure and working principle of the air intake system have been described in detail above and will not be repeated here.

[0080] In summary, the automobile described in the embodiment of the present application has at least the following advantages:

[0081] Since the advantages of the automobile described in the embodiment of the present application are the same as the advantages of the air intake system of the above-mentioned automobile, they will not be repeated here.

[0082] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An air intake system for a vehicle, characterized in that: include: An engine (10) has an intake manifold (11) and a crankcase (12), wherein the crankcase (12) has a crankshaft outlet; An air filter (20) having an air filter inlet and an air filter outlet; A supercharger (30) having a supercharger inlet and a supercharger outlet, wherein the supercharger inlet is communicated with the air filter outlet and the crankshaft outlet respectively; An intercooler (70) having an intercooler inlet and an intercooler outlet, wherein the intercooler inlet is in communication with the supercharger outlet, and the intercooler outlet is in communication with the intake manifold; A bypass pipe (40) having a first end and a second end, wherein the first end is in communication with the supercharger outlet, and the second end is in communication with the intake manifold (11); A first throttle valve (50) is arranged between the outlet of the supercharger and the inlet of the intercooler; a second throttle valve (60) disposed between the outlet of the supercharger and the first end of the bypass pipe (40); The oil gas generated by the crankcase (12) enters the inlet of the supercharger together with the air filtered by the air filter (20); When the temperature of the air filter inlet is lower than a first preset temperature and the temperature of the intake manifold is lower than a second preset temperature, the first throttle valve (50) is closed and the second throttle valve (60) is opened; when the temperature of the air filter inlet is higher than the first preset temperature or the temperature of the intake manifold is higher than the second preset temperature, the first throttle valve (50) is opened and the second throttle valve (60) is closed.

2. The air intake system of a vehicle according to claim 1, characterized in that: The engine (10) comprises a control unit (13); The control unit (13) is electrically connected to the first throttle valve (50) and the second throttle valve (60) respectively, and the control unit (13) is used to control the opening and closing of the first throttle valve (50) and the second throttle valve (60).

3. The air intake system of a vehicle according to claim 2, characterized in that: The automobile air intake system further comprises: a temperature sensor (80) and an air intake pressure temperature sensor (300); The temperature sensor (80) is arranged at the air filter inlet, the temperature sensor (80) is electrically connected to the control unit (13), and the temperature sensor (80) is used to detect the temperature of the air filter inlet and send it to the control unit (13); The intake air pressure temperature sensor (300) is arranged on the intake manifold (11), and the intake air pressure temperature sensor (300) comprises a temperature detection unit, and the temperature detection unit is electrically connected to the control unit (13), and the temperature detection unit is used to detect the temperature of the intake manifold and send it to the control unit (13).

4. The air intake system of a vehicle according to claim 3, characterized in that: The intake air pressure temperature sensor (300) further includes: a pressure detection unit; The pressure detection unit is used to detect the pressure of the intake manifold; The control unit (13) is electrically connected to the pressure detection unit. The control unit (13) is also used to calculate the intake volume of the intake manifold (11) according to the pressure detected by the pressure detection unit. When the intake volume meets the preset intake volume, and the temperature of the air filter intake port is lower than the first preset temperature, and the temperature of the intake manifold is lower than the second preset temperature, the first throttle valve (50) is controlled to be closed and the second throttle valve (60) is controlled to be opened. When the temperature of the air filter intake port is higher than the first preset temperature, or the temperature of the intake manifold is higher than the second preset temperature, or the intake volume does not meet the preset intake volume, the first throttle valve (50) is controlled to be opened and the second throttle valve (60) is controlled to be closed.

5. The air intake system of a vehicle according to claim 1, characterized in that: The first preset temperature is -20°C, and the second preset temperature is 55°C.

6. The air intake system of a vehicle according to claim 1, characterized in that: The automobile air intake system further comprises: a first three-way pipe (90); The first three-way pipe (90) comprises a first inlet end (91), a first outlet end (92) and a second outlet end (93), wherein the first inlet end (91) is connected to the first outlet end (92) and the second outlet end (93) respectively; The first inlet end (91) is in communication with the supercharger outlet, the first outlet end (92) is in communication with the intercooler inlet, and the second outlet end (93) is in communication with the first end of the bypass pipe (40).

7. The air intake system of a vehicle according to claim 6, characterized in that: The first throttle valve (50) is disposed on the first outlet end (92); The second throttle valve (60) is disposed on the second outlet end (93) or on the first end of the bypass pipe (40).

8. The air intake system of a vehicle according to claim 1, characterized in that: The automobile air intake system further comprises: a second three-way pipe (100); The second three-way pipe (100) comprises a second inlet end (101), a third inlet end (102) and a third outlet end (103), and the third outlet end (103) is respectively connected to the second inlet end (101) and the third inlet end (102); The second inlet end (101) is in communication with the second end of the bypass pipe (40), the third inlet end (102) is in communication with the intercooler outlet, and the third outlet end (103) is in communication with the intake manifold (11).

9. The air intake system of a vehicle according to claim 4, characterized in that: The automobile air intake system further comprises: a third three-way pipe (200); The third three-way pipe (200) comprises a fourth inlet end (201), a fifth inlet end (202) and a fourth outlet end (203), and the fourth outlet end (203) is respectively connected to the fourth inlet end (201) and the fifth inlet end (202); The fourth inlet end (201) is in communication with the crankshaft air outlet, the fifth inlet end (202) is in communication with the air filter air outlet, and the fourth outlet end (203) is in communication with the supercharger inlet.

10. An automobile, characterized in that: The automobile comprises: an automobile air intake system according to any one of claims 1 to 9.

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