Engine air inlet system of vehicle, engine and vehicle

Abstract

The utility model discloses an engine air inlet system of a vehicle, an engine and the vehicle, and relates to the field of vehicles, the engine air inlet system comprises a first multi-way valve, a venturi multi-way pipe and a first one-way valve, the first multi-way valve is suitable for being connected with a carbon tank of the vehicle; the first one-way valve is connected between the first multi-way valve and the venturi multi-way pipe and is constructed to be in one-way conduction in the direction from the first multi-way valve to the venturi multi-way pipe; the intercooler is connected between the supercharger and the intake manifold, and the venturi multi-way pipe is connected with the supercharger and the intercooler. Therefore, the first one-way valve is connected between the first multi-way valve and the venturi multi-way pipe, the venturi multi-way pipe is connected with the supercharger and the intercooler, fuel steam of a carbon tank can be smoothly guided into the intake manifold through the venturi effect, backflow of the fuel steam can be avoided, and therefore the engine intake system can be reasonable in structure, low in cost and high in efficiency. The fuel consumption of the vehicle can be reduced, the emission performance of the vehicle can be improved, and the fuel economy of the vehicle can be improved.

Description

Technical Field

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

[0002] In the related technology, the carbon canister can absorb the fuel vapor in the fuel tank. By designing the engine intake system, the fuel vapor absorbed by the carbon canister can be introduced into the engine to participate in combustion and work. However, the existing engine intake system is not designed reasonably, and the fuel vapor in the carbon canister cannot smoothly enter the engine intake system to participate in combustion and work, thereby affecting the vehicle's fuel consumption and emission performance, resulting in poor fuel economy of the vehicle. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide an engine air intake system of a vehicle, the engine air intake system of the vehicle has a reasonable structure and is conducive to improving the fuel economy of the vehicle.

[0004] The utility model further provides an engine.

[0005] The utility model further provides a vehicle.

[0006] According to the utility model, the engine intake system of the vehicle includes: a first multi-way valve, a Venturi multi-way tube and a first one-way valve, wherein the first multi-way valve is suitable for being connected to the carbon canister of the vehicle, the first one-way valve is connected between the first multi-way valve and the Venturi multi-way tube and is constructed to be unidirectional from the first multi-way valve to the Venturi multi-way tube; a supercharger, an intercooler and an intake manifold, wherein the intercooler is connected between the supercharger and the intake manifold, and the Venturi multi-way tube is connected to both the supercharger and the intercooler.

[0007] According to the vehicle's engine intake system of the utility model, the first one-way valve is connected between the first multi-way valve and the Venturi multi-way tube, and the Venturi multi-way tube is connected to the supercharger and the intercooler. The fuel vapor in the carbon canister can be smoothly introduced into the intake manifold through the Venturi effect, and the backflow of the fuel vapor can be avoided, so that the structure of the engine intake system can be reasonable, the fuel consumption of the vehicle can be reduced, the emission performance of the vehicle can be improved, and the fuel economy of the vehicle can be improved.

[0008] In some examples of the present invention, the engine intake system of the vehicle also includes: a second one-way valve, the first multi-way valve having a first interface, a second interface and a third interface, the first interface is connected to the carbon canister, the second interface is connected to the first one-way valve, the second one-way valve is connected between the third interface and the intake manifold and is constructed to be unidirectionally conductive from the first multi-way valve to the intake manifold.

[0009] In some examples of the present invention, the Venturi multi-way tube has a fourth interface, a fifth interface, and a sixth interface, the fourth interface is connected to the first one-way valve, the fifth interface is connected to the supercharger, and the sixth interface is connected to the intercooler.

[0010] In some examples of the present invention, the engine intake system of the vehicle also includes: an air filter and a throttle valve, the air filter is connected to the supercharger through a first pipeline, the intercooler is connected to the throttle valve through a second pipeline, the throttle valve is connected to the intake manifold through a third pipeline, the fifth interface is connected to the first pipeline, and the sixth interface is connected to the second pipeline.

[0011] In some examples of the present invention, a one-way valve is provided at the sixth interface, so that the Venturi multi-way pipe is constructed to be unidirectionally conductive from the intercooler to the sixth interface.

[0012] In some examples of the present utility model, the engine intake system of the vehicle also includes: a second multi-way valve, the second multi-way valve having a seventh interface, an eighth interface and a ninth interface, the number of the Venturi multi-way tube, the supercharger, the intercooler, and the intake manifold are two and one-to-one corresponding, the seventh interface is connected to the first one-way valve, and the eighth interface and the ninth interface are respectively connected to the two Venturi multi-way tubes.

[0013] In some examples of the present utility model, the engine intake system of the vehicle also includes: a third multi-way valve, the third multi-way valve having a tenth interface, an eleventh interface and a twelfth interface, the tenth interface is connected to the second one-way valve, the eleventh interface and the twelfth interface are respectively connected to the two intake manifolds.

[0014] In some examples of the present invention, the engine intake system of the vehicle further includes: a third one-way valve, the number of which is two and connected between the third multi-way valve and the corresponding intake manifold and configured to conduct one-way flow from the third multi-way valve to the intake manifold.

[0015] The engine according to the utility model comprises the above-mentioned engine air intake system of the vehicle.

[0016] The vehicle according to the utility model comprises the above-mentioned engine.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 It is a schematic diagram of the architecture of the engine intake system according to an embodiment of the utility model.

[0020] Reference numerals:

[0021] Engine air intake system 100; carbon canister 99; carbon canister solenoid valve 98;

[0022] First multi-way valve 1; first interface 11; second interface 12; third interface 13;

[0023] Second multi-way valve 2; seventh interface 21; eighth interface 22; ninth interface 23;

[0024] The third multi-way valve 3; the tenth interface 31; the eleventh interface 32; the twelfth interface 33;

[0025] Venturi multi-way pipe 4; fourth interface 41; fifth interface 42; sixth interface 43; one-way valve 431;

[0026] A first one-way valve 51; a second one-way valve 52; a third one-way valve 53;

[0027] Air filter 71; supercharger 72; intercooler 73; throttle valve 74; intake manifold 75;

[0028] The first pipeline 81 ; the second pipeline 82 ; and the third pipeline 83 . DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] Reference below Figure 1 An engine intake system 100 of a vehicle according to an embodiment of the present invention is described.

[0031] like Figure 1As shown, the engine intake system 100 of the vehicle according to the embodiment of the present utility model includes: a first multi-way valve 1 , a Venturi multi-way pipe 4 , a first non-return valve 51 , a supercharger 72 , an intercooler 73 and an intake manifold 75 .

[0032] The first multi-way valve 1 is suitable for being connected to the carbon canister 99 of the vehicle, the first one-way valve 51 is connected between the first multi-way valve 1 and the Venturi multi-way tube 4 and is constructed to be unidirectionally conductive from the first multi-way valve 1 to the Venturi multi-way tube 4; the intercooler 73 is connected between the supercharger 72 and the intake manifold 75, and the Venturi multi-way tube 4 is connected to both the supercharger 72 and the intercooler 73.

[0033] The first multi-way valve 1 is connected to the carbon canister 99 of the vehicle through a pipeline, and the first multi-way valve 1 is arranged downstream of the carbon canister 99. The first multi-way valve 1 is connected to the first check valve 51 through a pipeline, and the first check valve 51 is arranged downstream of the first multi-way valve 1. The first check valve 51 is also connected to the Venturi multi-way tube 4 through a pipeline, and the Venturi multi-way tube 4 is arranged downstream of the first check valve 51, that is, the first check valve 51 is connected between the first multi-way valve 1 and the Venturi multi-way tube 4. The first multi-way valve 1 is unidirectionally connected to the Venturi multi-way tube 4. It can be understood that the first check valve 51 is arranged between the first multi-way valve 1 and the Venturi multi-way tube 4, and the first check valve 51 is unidirectionally connected from the first multi-way valve 1 to the Venturi multi-way tube 4.

[0034] The intercooler 73 is connected between the supercharger 72 and the intake manifold 75. The intercooler 73 is arranged downstream of the supercharger 72. The intake manifold 75 is arranged downstream of the intercooler 73. The supercharger 72 can compress air to increase the intake volume of the engine. The temperature of the compressed air will increase, which will affect the normal operation of the engine body. The intercooler 73 can reduce the intake temperature of the engine body to improve the working reliability of the engine body. The intake manifold 75 is connected to the engine body. The intake manifold 75 can distribute the air (or the mixture of air and fuel vapor) to each cylinder as evenly as possible. The Venturi multi-way pipe 4 is connected to the supercharger 72, and the Venturi multi-way pipe 4 is connected to the intercooler 73. The supercharger 72 is also connected to the intercooler 73. That is to say, the Venturi multi-way pipe 4, the supercharger 72, and the intercooler 73 are connected in a ring.

[0035] As some embodiments of the present application, when the supercharger 72 is working, the compressed air can enter the intercooler 73 from the supercharger 72, and part of the compressed air flowing out of the intercooler 73 can enter the intake manifold 75, and part of it can enter the Venturi multi-way tube 4, and the fuel vapor in the fuel tank can be adsorbed by the carbon canister 99, and the fuel vapor adsorbed by the carbon canister 99 can enter the Venturi multi-way tube 4 through the first multi-way valve 1 and the first one-way valve 51 in sequence. According to the Venturi effect, and because the Venturi multi-way tube 4, the supercharger 72, and the intercooler 73 are connected in an annular manner, the fuel vapor entering the Venturi multi-way tube 4 can be driven by the compressed air entering the Venturi multi-way tube 4 to flow to the supercharger 72, and then, this part of the fuel vapor can enter the intake manifold 75 through the supercharger 72 and the intercooler 73 in sequence, so as to enter the engine body to participate in combustion and work.

[0036] As some embodiments of the present application, the vehicle may further include a turbocharger, which may be transmission-connected to the supercharger 72. When the turbocharger is working, the turbocharger can assist in driving the supercharger 72 to work so as to increase the intake volume of the vehicle. At this time, the pressure in the intake manifold 75 is relatively high (the absolute value of the negative pressure is relatively low). Due to the Venturi effect of the Venturi multi-channel tube 4, the fuel vapor entering the Venturi multi-channel tube 4 can be smoothly driven by the compressed air entering the Venturi multi-channel tube 4 to flow to the supercharger 72. Then, this part of the fuel vapor can enter the intake manifold 75 through the supercharger 72 and the intercooler 73 in turn, so as to smoothly enter the engine body to participate in combustion and work.

[0037] As some embodiments of the present application, Figure 1 As shown, a carbon canister solenoid valve 98 is provided between the carbon canister 99 and the first multi-way valve 1, and the on-off of the carbon canister 99 and the first multi-way valve 1 can be controlled by controlling the opening and closing of the carbon canister solenoid valve 98. As some embodiments of the present application, when the engine body is started, the carbon canister solenoid valve 98 is opened, and when the engine body is turned off, the carbon canister solenoid valve 98 is closed.

[0038] The engine body can be but not limited to V6, V8, V10 and other engine bodies. As some embodiments of the present application, the engine body is a V8 engine body. As some embodiments of the present application, the number of superchargers 72 of the engine intake system 100 can be two, the number of intercoolers 73 can be two, the number of venturi multi-way pipes 4 can be two, and the number of intake manifolds 75 can be two. Two superchargers 72, two intercoolers 73, two venturi multi-way pipes 4, and two intake manifolds 75 are all set in a one-to-one correspondence. It can be understood that the more cylinders the engine body has, the greater the intake volume required. Therefore, when the engine body is a V8 or V10 engine body, two sets of superchargers 72, intercoolers 73, venturi multi-way pipes 4, and intake manifolds 75 can be set to meet the intake demand of the engine body.

[0039] It is understandable that if the venturi multi-way pipe 4 is not provided, when the turbocharger is working, the fuel vapor adsorbed by the carbon canister 99 is difficult to flow into the intake manifold 75. In addition, by providing the first check valve 51, the fuel vapor adsorbed by the carbon canister 99 can be prevented from flowing back.

[0040] Therefore, by connecting the first multi-way valve 1 and the Venturi multi-way tube 4 through the first one-way valve 51, and connecting the Venturi multi-way tube 4 to the supercharger 72 and the intercooler 73, the fuel vapor adsorbed by the carbon canister 99 can be smoothly introduced into the intake manifold 75 through the Venturi effect, and the backflow of the fuel vapor can be avoided, so that the structure of the engine intake system 100 can be reasonable, the fuel consumption of the vehicle can be reduced, the emission performance of the vehicle can be improved, and the fuel economy of the vehicle can be improved.

[0041] It should be noted that if the first multi-way valve 1 and the first one-way valve 51 are integrated, when the direction of the pipeline of the engine intake system 100 is changed, it is necessary to remake the one-way multi-way valve integrated with the first multi-way valve 1 and the first one-way valve 51, which seriously affects the versatility. By separating the first multi-way valve 1 and the first one-way valve 51, the first multi-way valve 1 and the first one-way valve 51 can be adapted to pipelines of any direction, and have high versatility.

[0042] In some embodiments of the present invention, Figure 1 As shown, the vehicle's engine intake system 100 also includes: a second one-way valve 52, a first multi-way valve 1 having a first interface 11, a second interface 12 and a third interface 13, the first interface 11 is connected to the carbon canister 99, the second interface 12 is connected to the first one-way valve 51, and the second one-way valve 52 is connected between the third interface 13 and the intake manifold 75 and is constructed to be unidirectionally conductive from the first multi-way valve 1 to the intake manifold 75.

[0043] The vehicle engine intake system 100 further includes a second one-way valve 52. Specifically, the first multi-way valve 1 includes a first interface 11, a second interface 12 and a third interface 13. The first interface 11 of the first multi-way valve 1 is connected to the carbon canister 99, the second interface 12 of the first multi-way valve 1 is connected to the first one-way valve 51, the third interface 13 of the first multi-way valve 1 is connected to the second one-way valve 52, and the second one-way valve 52 is connected to the intake manifold 75. The second one-way valve 52 is configured to be unidirectional from the first multi-way valve 1 to the intake manifold 75. It can be understood that the second one-way valve 52 is provided between the third interface 13 of the first multi-way valve 1 and the intake manifold 75, and the second one-way valve 52 is unidirectional from the third interface 13 of the first multi-way valve 1 to the intake manifold 75, so that the fuel vapor can only flow from the third interface 13 of the first multi-way valve 1 to the intake manifold 75.

[0044] It is understandable that the fuel vapor in the fuel tank can be adsorbed by the carbon canister 99, and the fuel vapor adsorbed by the carbon canister 99 can enter the intake manifold 75 through the first multi-way valve 1 and the second one-way valve 52 in sequence to enter the engine body to participate in combustion and work.

[0045] As some embodiments of the present application, the vehicle may further include a turbocharger, and the turbocharger may be drivingly connected to the supercharger 72 .

[0046] When the turbocharger is working, the turbocharger can assist in driving the supercharger 72 to increase the intake volume of the vehicle. At this time, the pressure in the intake manifold 75 is relatively high (the absolute value of the negative pressure is relatively low). Due to the Venturi effect of the Venturi multi-way tube 4, the fuel vapor adsorbed by the carbon canister 99 can enter the Venturi multi-way tube 4 through the first multi-way valve 1 and the first one-way valve 51 in sequence. The fuel vapor entering the Venturi multi-way tube 4 can be driven by the compressed air entering the Venturi multi-way tube 4 to flow to the supercharger 72. Then, this part of the fuel vapor can enter the intake manifold 75 through the supercharger 72 and the intercooler 73 in sequence to enter the engine body to participate in combustion and work.

[0047] When the turbocharger is not working, the pressure in the intake manifold 75 is low (the absolute value of the negative pressure is high), and the fuel vapor adsorbed by the carbon canister 99 can enter the intake manifold 75 through the first multi-way valve 1 and the second one-way valve 52 in sequence to enter the engine body to participate in combustion and work.

[0048] By making the vehicle's engine intake system 100 also include a second one-way valve 52, and making the three interfaces of the first multi-way valve 1 connected to the carbon canister 99, the first one-way valve 51, and the second one-way valve 52 respectively, it is possible to prevent fuel vapor from flowing back from the intake manifold 75 to the first multi-way valve 1, and to make the fuel vapor flow to the first one-way valve 51 connected to the second interface 12 of the first multi-way valve 1 when the turbocharger is working, and to make the fuel vapor flow to the second one-way valve 52 when the turbocharger is not working, so that the fuel vapor adsorbed by the carbon canister 99 can flow smoothly to the intake manifold 75, thereby making the engine intake system 100 have a reasonable structure, reducing the vehicle's fuel consumption, improving the vehicle's emission performance, and helping to improve the vehicle's fuel economy.

[0049] In some embodiments of the present invention, Figure 1 As shown, the Venturi multi-way pipe 4 has a fourth interface 41 , a fifth interface 42 , and a sixth interface 43 . The fourth interface 41 is connected to the first one-way valve 51 , the fifth interface 42 is connected to the supercharger 72 , and the sixth interface 43 is connected to the intercooler 73 .

[0050] The Venturi multi-way pipe 4 includes a fourth interface 41, a fifth interface 42 and a sixth interface 43. The fourth interface 41 of the Venturi multi-way pipe 4 is connected to the first check valve 51, the fifth interface 42 is connected to the supercharger 72, and the sixth interface 43 is connected to the second intercooler 73.

[0051] It can be understood that the fuel vapor enters the supercharger 72 from the carbon canister 99 in sequence through the first interface 11 of the first multi-way valve 1, the second interface 12 of the first multi-way valve 1, the first non-return valve 51, the fourth interface 41 of the Venturi multi-way tube 4, and the fifth interface 42 of the Venturi multi-way tube 4. Then, the fuel vapor enters the intercooler 73 through the supercharger 72 for cooling. The fuel vapor cooled by the intercooler 73 enters the engine body through the intake manifold 75 to participate in combustion and work.

[0052] Such an arrangement can make the structure of the Venturi multi-way tube 4 reasonable, and can reliably introduce the fuel vapor adsorbed by the carbon canister 99 into the intake manifold 75, which is beneficial to reduce the amount of fuel escaping into the environment, thereby reducing the fuel consumption of the vehicle and improving the emission performance of the vehicle.

[0053] In some embodiments of the present invention, Figure 1 As shown, the vehicle's engine intake system 100 also includes: an air filter 71 and a throttle valve 74, the air filter 71 is connected to the supercharger 72 through a first pipeline 81, the intercooler 73 is connected to the throttle valve 74 through a second pipeline 82, the throttle valve 74 is connected to the intake manifold 75 through a third pipeline 83, the fifth interface 42 is connected to the first pipeline 81, and the sixth interface 43 is connected to the second pipeline 82.

[0054] The air filter 71 is connected to the supercharger 72 through a first pipeline 81, the air filter 71 is arranged upstream of the supercharger 72, and the air filter 71 can filter the air entering the first pipeline 81. The intercooler 73 is connected to the throttle valve 74 through a second pipeline 82, the throttle valve 74 is arranged downstream of the intercooler 73, the throttle valve 74 can control the flow of gas entering the engine body, the throttle valve 74 is connected to the intake manifold 75 through a third pipeline 83, the intake manifold 75 is arranged downstream of the throttle valve 74, and the intake manifold 75 is connected to the cylinders of the engine body.

[0055] The fifth interface 42 of the Venturi multi-way tube 4 is connected to the first pipeline 81, and the sixth interface 43 of the Venturi multi-way tube 4 is connected to the second pipeline 82. It can be understood that the fifth interface 42 of the Venturi multi-way tube 4 is connected to the supercharger 72 through the first pipeline 81, and the sixth interface 43 of the Venturi multi-way tube 4 is connected to the intercooler 73 through the second pipeline 82.

[0056] Such an arrangement can make the connection form of the Venturi multi-way pipe 4, the supercharger 72, and the intercooler 73 reasonable, and can facilitate the connection and arrangement of the Venturi multi-way pipe 4, the supercharger 72, and the intercooler 73, which is beneficial to reduce the difficulty of assembling the engine intake system 100.

[0057] In some embodiments of the present invention, Figure 1 As shown, a one-way valve 431 is provided at the sixth interface 43 , so that the Venturi multi-way pipe 4 is constructed to be unidirectionally conductive from the intercooler 73 to the sixth interface 43 .

[0058] The sixth port 43 of the Venturi multi-way tube 4 is provided with a one-way valve 431, and the sixth port 43 of the Venturi multi-way tube 4 is connected to the intercooler 73 through the second pipeline 82. The one-way valve 431 provided at the sixth port 43 is configured to conduct one-way from the second pipeline 82 to the sixth port 43. That is, after the fuel vapor enters the Venturi multi-way tube 4 from the fourth port 41, it can only flow to the fifth port 42, and cannot flow back.

[0059] By providing a one-way valve 431 at the sixth interface 43, the fuel vapor can only enter the fifth interface 42 from the fourth interface 41, preventing the fuel vapor from directly flowing back to the second pipeline 82 through the sixth interface 43, which is conducive to smoothly introducing the fuel vapor adsorbed by the carbon canister 99 into the intake manifold 75.

[0060] In some embodiments of the present invention, Figure 1 As shown, the vehicle's engine intake system 100 also includes: a second multi-way valve 2, the second multi-way valve 2 has a seventh interface 21, an eighth interface 22 and a ninth interface 23, the number of the Venturi multi-way tube 4, the supercharger 72, the intercooler 73, and the intake manifold 75 are two and one-to-one corresponding, the seventh interface 21 is connected to the first one-way valve 51, and the eighth interface 22 and the ninth interface 23 are respectively connected to the two Venturi multi-way tubes 4.

[0061] Among them, the vehicle engine intake system 100 also includes a second multi-way valve 2. It can be understood that the number of the Venturi multi-way pipe 4, the supercharger 72, the intercooler 73, and the intake manifold 75 are all two and are set one by one. Further, the number of the Venturi multi-way pipe 4, the supercharger 72, the intercooler 73, the intake manifold 75, the air filter 71, the throttle valve 74, the first pipeline 81, the second pipeline 82, and the third pipeline 83 are all two and are set one by one. It can be understood that the more cylinders the engine body has, the greater the required intake volume. Therefore, when the engine body is a V8 or V10 engine body, two sets of superchargers 72, intercoolers 73, Venturi multi-way pipes 4, intake manifolds 75, air filters 71, and throttle valves 74 can be set to meet the intake demand of the engine body.

[0062] The eighth port 22 and the ninth port 23 are connected to the fourth ports 41 of the two Venturi multi-channel tubes 4 respectively.

[0063] It should be noted that when the turbocharger is working, the turbocharger can assist in driving the supercharger 72 to increase the vehicle's intake volume. At this time, the pressure in the intake manifold 75 is relatively high (the absolute value of the negative pressure is relatively low). Due to the Venturi effect of the Venturi multi-way tube 4, the fuel vapor adsorbed by the carbon canister 99 can enter the two Venturi multi-way tubes 4 in sequence through the first multi-way valve 1, the first one-way valve 51, and the second multi-way valve 2. The fuel vapor entering the Venturi multi-way tube 4 can be driven by the compressed air entering the Venturi multi-way tube 4 to flow to the corresponding supercharger 72. Then, this part of the fuel vapor can enter the corresponding intake manifold 75 through the corresponding supercharger 72 and the corresponding intercooler 73 in sequence to enter the engine body to participate in combustion and work.

[0064] By making the vehicle's engine intake system 100 also include a second multi-way valve 2, and making the number of the Venturi multi-way pipe 4, the supercharger 72, the intercooler 73, and the intake manifold 75 two and one-to-one corresponding, when the turbocharger is working, the fuel vapor can enter the cylinder of the engine body through two completely identical and corresponding intake paths to meet the use requirements of a large-displacement engine.

[0065] In some embodiments of the present invention, Figure 1 As shown, the vehicle's engine intake system 100 also includes: a third multi-way valve 3, the third multi-way valve 3 has a tenth interface 31, an eleventh interface 32 and a twelfth interface 33, the tenth interface 31 is connected to the second one-way valve 52, and the eleventh interface 32 and the twelfth interface 33 are respectively connected to the two intake manifolds 75.

[0066] Among them, the vehicle's engine intake system 100 also includes a third multi-way valve 3, the third multi-way valve 3 has a tenth interface 31, an eleventh interface 32 and a twelfth interface 33. Specifically, the tenth interface 31 of the third multi-way valve 3 is connected to the second one-way valve 52, and the eleventh interface 32 and the twelfth interface 33 of the third multi-way valve 3 are respectively connected to the two intake manifolds 75.

[0067] It should be noted that when the turbocharger is not working, the pressure in the intake manifold 75 is low (the absolute value of the negative pressure is high), and the fuel vapor adsorbed by the carbon canister 99 flows to the third multi-way valve 3 through the third interface 13 of the first multi-way valve 1 and the second one-way valve 52 in sequence, and flows from the eleventh interface 32 and the twelfth interface 33 of the third multi-way valve 3 to the two intake manifolds 75 respectively to enter the engine body.

[0068] By making the vehicle's engine intake system 100 also include a third multi-way valve 3, and connecting the tenth interface 31 to the second one-way valve 52, and the eleventh interface 32 and the twelfth interface 33 to the two intake manifolds 75 respectively, when the turbocharger is not working, the fuel vapor can enter the cylinder of the engine body through two completely identical and corresponding intake paths to meet the use requirements of a large-displacement engine.

[0069] In some embodiments of the present invention, Figure 1 As shown, the vehicle's engine intake system 100 also includes: a third one-way valve 53, the number of which is two and connected between the third multi-way valve 3 and the corresponding intake manifold 75 and is constructed to be unidirectionally conductive from the third multi-way valve 3 to the intake manifold 75.

[0070] The vehicle engine intake system 100 further includes a third one-way valve 53, and the number of the third one-way valve 53 is two, one of which is connected between the eleventh interface 32 of the third multi-way valve 3 and the corresponding intake manifold 75, and the other third one-way valve 53 is connected between the twelfth interface 33 of the third multi-way valve 3 and the corresponding intake manifold 75. The third one-way valve 53 can make the third multi-way valve 3 to the corresponding intake manifold 75 unidirectional.

[0071] It should be noted that when the turbocharger is not working, the fuel vapor flows to the third multi-way valve 3 through the third interface 13 of the first multi-way valve 1 and the second one-way valve 52, and flows from the eleventh interface 32 and the twelfth interface 33 of the third multi-way valve 3 through the two third one-way valves 53 to the intake manifold 75 to enter the engine body.

[0072] By making the vehicle's engine intake system 100 also include the third one-way valve 53 , it is possible to prevent the fuel vapor from flowing back from the intake manifold 75 to the third multi-way valve 3 , which is conducive to smoothly introducing the fuel vapor adsorbed by the carbon canister 99 into the intake manifold 75 .

[0073] The engine according to the embodiment of the utility model includes the engine intake system 100 of the vehicle of the above embodiment, which is connected between the first multi-way valve 1 and the Venturi multi-way pipe 4 through the first one-way valve 51, and by connecting the Venturi multi-way pipe 4 to the supercharger 72 and the intercooler 73, the fuel vapor adsorbed by the carbon canister 99 can be smoothly introduced into the intake manifold 75 through the Venturi effect, and the reflux of the fuel vapor can be avoided, so that the structure of the engine intake system 100 can be reasonable, the fuel consumption of the vehicle can be reduced, the emission performance of the vehicle can be improved, and the fuel economy of the vehicle can be improved.

[0074] According to the vehicle of the embodiment of the utility model, including the engine of the above embodiment, the first one-way valve 51 is connected between the first multi-way valve 1 and the Venturi multi-way tube 4, and the Venturi multi-way tube 4 is connected to the supercharger 72 and the intercooler 73. The fuel vapor adsorbed by the carbon canister 99 can be smoothly introduced into the intake manifold 75 through the Venturi effect, and the backflow of the fuel vapor can be avoided, so that the structure of the engine intake system 100 can be reasonable, the fuel consumption of the vehicle can be reduced, the emission performance of the vehicle can be improved, and the fuel economy of the vehicle can be improved.

[0075] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0076] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0077] In the description of the present invention, "plurality" means two or more.

[0078] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

[0079] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0080] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0081] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An engine air intake system for a vehicle, characterized in that: include: A first multi-way valve, a Venturi multi-way tube and a first one-way valve, wherein the first multi-way valve is suitable for connecting to a carbon canister of a vehicle, and the first one-way valve is connected between the first multi-way valve and the Venturi multi-way tube and is configured to conduct one-way from the first multi-way valve to the Venturi multi-way tube; A supercharger, an intercooler and an intake manifold, wherein the intercooler is connected between the supercharger and the intake manifold, and the venturi multi-way pipe is connected to both the supercharger and the intercooler.

2. The vehicle engine intake system according to claim 1, characterized in that: Also includes: The second one-way valve, the first multi-way valve has a first interface, a second interface and a third interface, the first interface is connected to the carbon canister, the second interface is connected to the first one-way valve, the second one-way valve is connected between the third interface and the intake manifold and is constructed to be unidirectional from the first multi-way valve to the intake manifold.

3. The engine intake system according to claim 1, characterized in that: The Venturi multi-way pipe has a fourth interface, a fifth interface, and a sixth interface. The fourth interface is connected to the first one-way valve, the fifth interface is connected to the supercharger, and the sixth interface is connected to the intercooler.

4. The vehicle engine intake system according to claim 3, characterized in that: Also includes: An air filter and a throttle valve, wherein the air filter is connected to the supercharger through a first pipeline, the intercooler is connected to the throttle valve through a second pipeline, the throttle valve is connected to the intake manifold through a third pipeline, the fifth interface is connected to the first pipeline, and the sixth interface is connected to the second pipeline.

5. The vehicle engine intake system according to claim 4, characterized in that: A one-way valve is provided at the sixth interface, so that the Venturi multi-way pipe is constructed to conduct one-way from the intercooler to the sixth interface.

6. The vehicle engine air intake system according to claim 1, characterized in that: Also includes: The second multi-way valve has a seventh interface, an eighth interface and a ninth interface. The number of the Venturi multi-way tube, the supercharger, the intercooler and the intake manifold are two and they correspond one to one. The seventh interface is connected to the first one-way valve, and the eighth interface and the ninth interface are respectively connected to the two Venturi multi-way tubes.

7. The vehicle engine air intake system according to claim 2, characterized in that: Also includes: The third multi-way valve has a tenth interface, an eleventh interface and a twelfth interface, the tenth interface is connected to the second one-way valve, and the eleventh interface and the twelfth interface are respectively connected to the two intake manifolds.

8. The vehicle engine air intake system according to claim 7, characterized in that: Also includes: The third one-way valve is two in number and is connected between the third multi-way valve and the corresponding intake manifold and is configured to conduct one-way flow from the third multi-way valve to the intake manifold.

9. An engine, characterized in that: An engine air intake system for a vehicle comprising the method according to any one of claims 1-8.

10. A vehicle, characterized in that: Comprising an engine according to claim 9.

Images