Engine air inlet system and vehicle
By introducing a liquid-cooled intercooler and a resonant cavity into the engine intake system and combining them with the intake manifold, the problems of complex structure and susceptibility to environmental influences in traditional intake systems are solved, achieving system simplification and performance improvement.
Patent Information
- Application Number
- CN202520229960.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-02-13
AI Technical Summary
Traditional automobile engine intake systems have long air passages, complex structures, are susceptible to environmental influences, are costly, heavy, bulky, and difficult to arrange, and are prone to icing, especially in low-temperature environments.
The design incorporates a liquid-cooled intercooler and a resonant cavity integrated with the intake manifold. The intercooler is mounted on the outer wall of the intake manifold, and the resonant cavity is an integral structure with the timing system front cover. The intake manifold contains a pressure stabilizing chamber and manifold air passages, and a water-to-air intercooler is used to reduce the impact of ambient temperature.
The system structure was simplified, the number and size of parts were reduced, the impact of ambient temperature on intake air temperature was reduced, the EGR exhaust gas recirculation temperature range was expanded, engine power was increased, and system costs were reduced.
Smart Images
Figure CN223647937U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of engine intake system, and more specifically, relates to an engine intake system and a vehicle. Background Technology
[0002] Traditional automotive engine intake systems typically use air-to-air intercooling systems, which have the following drawbacks:
[0003] 1. Long airway causes delayed pressurization and large pressure loss;
[0004] 2. Complex structure, large size, many parts, large space occupation, high cost, heavy weight, etc.
[0005] 3. It is susceptible to environmental influences. When equipped with an EGR system, the intercooler is prone to freezing when the ambient temperature is below 5℃, which can cause poor air intake. Utility Model Content
[0006] The purpose of this invention is to provide an engine intake system and vehicle that solves the problems of long air passages, complex structure, and susceptibility to environmental influences in existing intake systems.
[0007] To achieve the above objectives, in a first aspect, the present invention provides an engine intake system, comprising: a first hose, a resonant cavity, a second hose, an intercooler, a throttle valve, an intake manifold, and a desorption pipe connected in sequence;
[0008] The intercooler is a liquid-cooled intercooler;
[0009] The intercooler is installed on the outer wall of the intake manifold.
[0010] Optionally, the intercooler is connected to the coolant system of the electric drive system.
[0011] Optionally, the resonant cavity is an integral structure with the front cover of the vehicle's timing system.
[0012] Optionally, the resonant cavity is provided with a first air inlet and a first air outlet. The first air inlet is connected to one end of the first rubber tube, and the other end of the first rubber tube is used to connect to a booster. The air outlet of the resonant cavity is connected to one end of the second rubber tube.
[0013] Optionally, the intercooler is provided with a second air inlet, a second air outlet, a water inlet, and a water outlet. The second air inlet is connected to the other end of the second hose, and the water inlet and water outlet are connected to the coolant system of the electric drive system.
[0014] Optionally, the throttle valve is provided with a third air inlet and a third air outlet, and the third air inlet is connected to the second air outlet.
[0015] Optionally, the intake manifold is provided with a fourth air inlet, a plurality of fourth air outlets and a desorption interface, the fourth air inlet being connected to the third air outlet, the desorption interface being connected to the desorption pipe, and the plurality of fourth air outlets being used to connect to the engine cylinder head.
[0016] Optionally, the intake manifold is provided with a pressure stabilizing chamber and a manifold air passage that are interconnected. The manifold air passage is connected to the cylinder head air passage of the engine cylinder head through multiple fourth air outlets. The pressure stabilizing chamber, the manifold air passage, and the cylinder head air passage are arranged sequentially from high to low and in the same direction.
[0017] Optionally, the intake manifold is provided with a window extending through the intake manifold;
[0018] The desorption interface and the window are sealed together by a cover plate;
[0019] Bolts are provided inside the opening for connecting to the engine cylinder head.
[0020] Secondly, this utility model provides a vehicle including the engine intake system described in the first aspect.
[0021] The beneficial effects of this utility model are as follows: It provides an engine intake system, comprising: a first hose, a resonant cavity, a second hose, an intercooler, a throttle valve, an intake manifold, and a desorption pipe connected in sequence; the intercooler is a liquid-cooled intercooler; the intercooler is installed on the outer wall of the intake manifold. Fixing the intercooler to the intake manifold can solve the problems of complex structure, large weight, large volume, difficult system layout, and long air passage caused by separate air-to-air intercoolers; using a water-to-air intercooler can reduce the influence of ambient temperature on intake air temperature.
[0022] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description
[0023] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.
[0024] Figure 1 One of the schematic structural diagrams of an engine intake system according to an embodiment of the present invention is shown.
[0025] Figure 2 A second schematic structural diagram of an engine intake system according to an embodiment of the present invention is shown.
[0026] Figure 3A schematic structural diagram of the pressure regulating chamber, the manifold air passage, and the cylinder head air passage according to an embodiment of the present invention is shown.
[0027] Figure 4 One of the schematic structural diagrams of an intake manifold according to an embodiment of the present invention is shown.
[0028] Figure 5 A second schematic structural diagram of an intake manifold according to an embodiment of the present invention is shown.
[0029] Figure 6 A cross-sectional view of an intake manifold according to an embodiment of the present invention is shown.
[0030] Explanation of reference numerals in the attached figures:
[0031] 1. First hose; 2. Resonant cavity; 3. Second hose; 4. Intercooler; 5. Throttle valve; 6. Intake manifold; 7. Desorption pipe; 8. Front cover; 9. Desorption interface; 10. Pressure regulating chamber; 11. Manifold air passage; 12. Cylinder head air passage; 13. Opening; 14. Bolt guide sleeve; 15. Bolt; 16. Cover plate; 17. Fourth exhaust port; 18. Engine cylinder head. Detailed Implementation
[0032] Preferred embodiments of the present invention will now be described in more detail. While preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.
[0033] like Figure 1 and 2 As shown, this embodiment provides an engine intake system, including: a first hose 1, a resonant cavity 2, a second hose 3, an intercooler 4, a throttle valve 5, an intake manifold 6, and a desorption pipe 7 connected in sequence;
[0034] Intercooler 4 is a liquid-cooled intercooler 4;
[0035] Intercooler 4 is installed on the outer wall of intake manifold 6.
[0036] In this embodiment, the first hose 1, at its air inlet end, is connected to the turbocharger. The turbocharger compresses the air before it enters the engine cylinder to increase its density, allowing more air to fill the cylinder and thus increasing engine power. The resonant cavity 2 is used to reduce airflow noise after the turbocharger. The second hose 3 connects the resonant cavity 2 and the intercooler 4, guiding the gas after the turbocharger into the intercooler 4. The intercooler 4 is a component of the turbocharger, used to reduce the temperature of the high-temperature air after turbocharging, thereby reducing the engine's thermal load, increasing the intake volume, and ultimately increasing engine power. The power output of the engine; In this embodiment, the intercooler 4 is arranged above the intake manifold 6 and fixed to the intake manifold 6 with one M8 bolt. It is also connected to the engine cylinder head cover with one M8 bolt, and fixed to the intercooler with three M6 bolts passing through the intake manifold 6 and the throttle body 5. The intake manifold 6 is fixed to the engine cylinder head 18 with five M8 bolts. The intake manifold 6 is a passage for introducing air into the engine combustion chamber. The intake manifold 6 connects the throttle body 5 and the engine cylinder head 18, and plays the role of guiding and distributing air to each cylinder. The throttle body 5 is a controllable valve that controls the air entering the engine. After the air enters the intake manifold 6, it mixes with gasoline to form a combustible mixture, which then burns to produce power. The desorption pipe 7 connects the carbon canister and the carbon canister control valve, serving as a channel for fuel vapor desorption. To reduce fuel vapor emissions, meet China VI emission standards, and prevent fuel vapor leakage into the atmosphere, fuel systems typically include carbon canisters, desorption pipes, and carbon canister control valves. Fuel continuously evaporates during vehicle operation and at high temperatures, and the evaporated fuel vapor is adsorbed by the carbon canister. By opening and closing the carbon canister control valve and utilizing the negative pressure of the airflow in the intake manifold 6 or air filter outlet, the fuel vapor adsorbed by the carbon canister is desorbed and then enters the combustion chamber to participate in combustion, simultaneously cleaning the carbon canister.
[0037] Specifically, fixing the intercooler 4 to the intake manifold 6 can solve the problems of complex structure, large weight, large volume, difficult system layout, and long air passage caused by the air-to-intercooler separation; using a water-to-intercooler can reduce the influence of ambient temperature on intake temperature.
[0038] Optionally, the intercooler 4 is connected to the coolant system of the electric drive system.
[0039] Specifically, the intercooler 4 shares the same coolant with the electric drive system for cooling, which can expand the temperature range for EGR exhaust gas recirculation.
[0040] Optionally, the resonant cavity 2 and the front cover 8 of the vehicle's timing system are integrated into one structure.
[0041] Specifically, the front cover 8 of the timing system is an existing structure, covering the outside of the timing belt. Making the resonant cavity 2 and the front cover 8 into an integrated structure can reduce development costs and the number of parts, while also reducing the engine size and facilitating engine compartment layout.
[0042] In this embodiment, the resonant cavity 2 is provided with a first air inlet and a first air outlet. The first air inlet is connected to one end of the first rubber tube 1, and the other end of the first rubber tube 1 is used to connect to the booster. The air outlet of the resonant cavity 2 is connected to one end of the second rubber tube 3.
[0043] In this embodiment, the intercooler 4 is provided with a second air inlet, a second air outlet, a water inlet, and a water outlet. The second air inlet is connected to the other end of the second hose 3, and the water inlet and water outlet are connected to the coolant system of the electric drive system.
[0044] In this embodiment, the throttle valve 5 is provided with a third air inlet and a third air outlet, and the third air inlet is connected to the second air outlet.
[0045] Optionally, the intake manifold 6 is provided with a fourth intake port, multiple fourth exhaust ports 17 and a desorption interface 9. The fourth intake port is connected to the third exhaust port, the desorption interface 9 is connected to the desorption pipe 7, and the multiple fourth exhaust ports 17 are used to connect to the engine cylinder head 18.
[0046] In this embodiment, the intake manifold 6 is made of irregularly shaped cast aluminum, and the number of fourth air outlets 17 is four.
[0047] like Figure 3 As shown, optionally, the intake manifold 6 is provided with a pressure regulating chamber 10 and a manifold air passage 11 that are interconnected. The manifold air passage 11 is connected to the cylinder head air passage 12 of the engine cylinder head 18 through multiple fourth air outlets 17. The pressure regulating chamber 10, the manifold air passage 11 and the cylinder head air passage 12 are arranged sequentially from high to low and in the same direction.
[0048] Specifically, the manifold intake passage 11 and pressure regulating chamber 10 are arranged in the same direction as the cylinder head intake passage 12 and have no low point, which can ensure that condensate does not accumulate in the intake manifold 6 and avoid engine misfire.
[0049] like Figure 4-6 As shown, optionally, the intake manifold 6 is provided with a window 13 that penetrates the intake manifold 6;
[0050] The desorption interface 9 and the window 13 are sealed together by the cover plate 16;
[0051] Bolt 15 is provided inside the window 13, which is used to connect to the engine cylinder head 18.
[0052] Specifically, the opening 13 serves two purposes: firstly, it connects the desorption interface 9 to the intake manifold 6; secondly, it provides a mounting point for the intake manifold 6 and the engine cylinder head 18. The opening 13 of the intake manifold 6 adopts an integrated cover plate 16 for the desorption interface 9, which serves both a sealing function and provides an interface for desorption. In this embodiment, the bolt 15 in the middle of the interface between the intake manifold 6 and the engine cylinder head 18 is installed using an auxiliary tooling bolt guide sleeve 14. During installation, the bolt guide sleeve 14 is inserted into the opening 13 to ensure that the bolt 15 can be correctly assembled. After installation, the bolt guide sleeve 14 is removed.
[0053] This embodiment also provides a vehicle, including the engine intake system of this embodiment.
[0054] The vehicle's engine intake system is coupled with a water-cooled intercooler, which solves the problems of the original solution, such as complex structure, large size, many parts, large space occupation, high cost, heavy weight, turbo lag, and large pressure loss, while also expanding the EGR operating temperature range.
[0055] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.
Claims
1. An engine intake system, characterized in that, include: The first hose (1), the resonant cavity (2), the second hose (3), the intercooler (4), the throttle body (5), the intake manifold (6), and the desorption pipe (7) are connected in sequence. The intercooler (4) is a liquid-cooled intercooler (4); The intercooler (4) is installed on the outer wall of the intake manifold (6).
2. The engine intake system according to claim 1, characterized in that, The intercooler (4) is connected to the coolant system of the electric drive system.
3. The engine intake system according to claim 1, characterized in that, The resonant cavity (2) and the front cover (8) of the vehicle's timing system are an integral structure.
4. The engine intake system according to claim 2, characterized in that, The resonant cavity (2) is provided with a first air inlet and a first air outlet. The first air inlet is connected to one end of the first rubber tube (1), and the other end of the first rubber tube (1) is used to connect to the booster. The air outlet of the resonant cavity (2) is connected to one end of the second rubber tube (3).
5. The engine intake system according to claim 4, characterized in that, The intercooler (4) is provided with a second air inlet, a second air outlet, a water inlet and a water outlet. The second air inlet is connected to the other end of the second hose (3), and the water inlet and water outlet are connected to the coolant system of the electric drive system.
6. The engine intake system according to claim 5, characterized in that, The throttle valve (5) is provided with a third air inlet and a third air outlet, and the third air inlet is connected to the second air outlet.
7. The engine intake system according to claim 6, characterized in that, The intake manifold (6) is provided with a fourth intake port, multiple fourth exhaust ports (17) and a desorption interface (9). The fourth intake port is connected to the third exhaust port, the desorption interface (9) is connected to the desorption pipe (7), and the multiple fourth exhaust ports (17) are used to connect to the engine cylinder head (18).
8. The engine intake system according to claim 1, characterized in that, The intake manifold (6) is provided with a pressure regulating chamber (10) and a manifold air passage (11) that are interconnected. The manifold air passage (11) is connected to the cylinder head air passage (12) of the engine cylinder head (18) through multiple fourth air outlets (17). The pressure regulating chamber (10), the manifold air passage (11) and the cylinder head air passage (12) are arranged sequentially from high to low and in the same direction.
9. The engine intake system according to claim 7, characterized in that, The intake manifold (6) is provided with a window (13) that penetrates the intake manifold (6); The desorption interface (9) and the window (13) are sealed together by a cover plate (16); The opening (13) is provided with bolts (15) for connecting to the engine cylinder head (18).
10. A vehicle, characterized in that, Includes the engine intake system as described in any one of claims 1-9.