Intake manifold, engine intake assembly, engine system and vehicle

Abstract

The utility model discloses an intake manifold, engine intake assembly, engine system and vehicle, inside the intake manifold is formed a pressure stabilizing chamber and a plurality of branch pipe intake ducts, the plurality of branch pipe intake ducts are all communicated with the pressure stabilizing chamber, the bottom of the pressure stabilizing chamber is provided with a first diversion part, the bottom of each branch pipe intake duct is provided with a branch pipe bottom wall and a second diversion part, and the first diversion part is communicated with the second diversion part. The second flow guide part is communicated with the first flow guide part; wherein the first flow guide part extends in the length direction of the pressure stabilizing cavity and is constructed into an arc shape with the middle part sunken downwards relative to the two sides in the width direction, the second flow guide part extends in the length direction of the branch pipe air inlet channel and is sunken downwards relative to the bottom wall of the branch pipe, and the second flow guide part is constructed into an arc shape with the middle part sunken downwards relative to the two sides in the width direction. By means of the arrangement, optimal design of the intake manifold can be achieved, it is guaranteed that condensate water evenly enters all the air cylinders, accumulation and freezing of the condensate water can be avoided, and the combustion stability of an engine is improved.

Description

Technical Field

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

[0002] In the related art, condensed water generated when compressed air is cooled in the intercooler will accumulate in the intercooler or the intake manifold and freeze, and part of the condensed water will enter one of the cylinders of the engine, which will affect the combustion performance of the engine and may even cause misfire, leading to unstable engine performance. 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 intake manifold, which can allow condensed water to enter each cylinder evenly, thereby improving the performance of the engine.

[0004] The utility model further provides an engine air intake assembly.

[0005] The utility model further provides an engine system.

[0006] The utility model further provides a vehicle.

[0007] According to the intake manifold of the utility model, a pressure-stabilizing chamber and a plurality of branch air inlet passages are formed in the intake manifold, and the plurality of branch air inlet passages are all connected to the pressure-stabilizing chamber, and a first flow guide portion is constructed at the bottom of the pressure-stabilizing chamber, and a branch bottom wall and a second flow guide portion are constructed at the bottom of each branch air inlet passage, and the second flow guide portion is connected to the first flow guide portion; wherein, the first flow guide portion extends along the length direction of the pressure-stabilizing chamber and is constructed into an arc shape with the middle portion in the width direction being concave downward relative to the two sides, and the second flow guide portion extends along the length direction of the branch air inlet passage and is concave relative to the branch bottom wall.

[0008] According to the intake manifold of the utility model, a first guide portion is arranged at the bottom of the pressure-stabilizing chamber, a branch pipe bottom wall and a second guide portion are arranged at the bottom of each branch pipe inlet passage, and the first guide portion and the second guide portion are communicated, so that the first guide portion and the second guide portion can guide condensed water, so that the condensed water can sink to the bottom of the pressure-stabilizing chamber after entering the intake manifold, and then flow into each cylinder of the engine through the first guide portion and multiple second guide portions, so as to achieve an optimized design of the intake manifold and ensure that the condensed water enters each cylinder evenly, thereby avoiding accumulation and freezing of condensed water and improving the combustion stability of the engine.

[0009] In some examples of the present invention, the second guide portion is configured to be an arc-shaped with a middle portion in the width direction being concave downward relative to both sides.

[0010] In some examples of the present invention, the first air guide portion has a first side and a second side opposite to each other along a width direction thereof, and the second side is connected to the second air guide portion; wherein the second side is arranged lower than the first side.

[0011] In some examples of the present invention, the branch pipe air inlet extends obliquely downward from the pressure stabilizing chamber.

[0012] In some examples of the present invention, an angle α is formed between a tangent line of a side of the first guide portion connected to the second guide portion and the bottom wall of the branch pipe, and α satisfies the relationship: α>20°.

[0013] In some examples of the present invention, the bottom of each branch pipe air inlet is constructed with a plurality of second flow guide portions distributed on both sides of the bottom wall of the branch pipe.

[0014] In some examples of the present invention, a smooth transition is formed between the bottom wall of each branch pipe air inlet and the second guide portion.

[0015] In some examples of the present invention, the intake manifold includes: a first shell and a second shell, the first shell is connected to the second shell and together forms the pressure stabilizing chamber, the second shell forms a plurality of branch intake ducts, and the portion of the second shell that constitutes the bottom of the pressure stabilizing chamber is formed with the first guide portion.

[0016] In some examples of the present invention, the intake manifold also includes: a mounting seat and a first sealing gasket, wherein the mounting seat is mounted on the second shell and is used to be connected to the cylinder head of the engine, the mounting seat is configured with an outlet connected to the branch pipe intake duct, and the first sealing gasket is arranged on a side of the mounting seat facing the cylinder head of the engine and is arranged around the outlet of the branch pipe intake duct.

[0017] In some examples of the present invention, the intake manifold further includes: a mounting seat, the mounting seat being mounted on the second shell, the mounting seat being configured with an outlet connected to the branch pipe intake duct, the outer side wall of the intake manifold being provided with a first mounting portion, the first mounting portion and the mounting seat being both used for connection to a cylinder head of an engine.

[0018] In some examples of the present utility model, the mounting seat is provided with a first positioning portion, the first positioning portion and the outlet are spaced apart on the mounting seat, and the first positioning portion is used for positioning and cooperating with the cylinder cover.

[0019] In some examples of the present utility model, an inlet for connecting with the throttle valve is disposed at the top of the intake manifold.

[0020] In some examples of the present invention, the intake manifold further includes: a second sealing gasket, the top of the intake manifold is provided with an end face that cooperates with the throttle valve, the inlet is located on the end face, and the second sealing gasket is arranged on the end face and around the inlet of the intake manifold.

[0021] In some examples of the present invention, an end surface cooperating with the throttle valve is provided at the top of the intake manifold, the inlet is located at the end surface, and the end surface is provided with a second positioning portion, and the second positioning portion is used for positioning and cooperating with the throttle valve.

[0022] In some examples of the present utility model, the intake manifold is provided with an interface connected to a fuel evaporation pipeline, and the interface is communicated with the pressure stabilizing chamber.

[0023] In some examples of the present invention, the intake manifold is a plastic intake manifold.

[0024] The engine air intake assembly according to the utility model comprises: the above-mentioned intake manifold.

[0025] In some examples of the present invention, the engine intake assembly also includes: an intake air temperature and pressure sensor, which is arranged on the outer wall of the intake manifold and corresponds to the position of the pressure stabilizing chamber, and the intake air temperature and pressure sensor is used to detect the temperature and pressure of the intake air in the pressure stabilizing chamber.

[0026] In some examples of the present invention, the engine intake assembly further includes: a throttle valve and an intercooler, wherein the throttle valve is disposed on the intake manifold and connected to the pressure stabilizing chamber, and the intercooler is disposed on the top of the intake manifold and connected to the throttle valve.

[0027] In some examples of the present invention, the engine intake assembly also includes: a first bracket, the first bracket is arranged on the top of the intake manifold, the intercooler is arranged on the first bracket to be connected to the intake manifold through the first bracket, the first bracket is provided with a second mounting portion, and the second mounting portion is used to connect to the cylinder head of the engine.

[0028] In some examples of the present invention, the intercooler is provided with a third mounting portion and a fourth mounting portion, the third mounting portion is spaced apart from the first bracket and connected to the intake manifold, and the fourth mounting portion is used to be connected to the cylinder head.

[0029] In some examples of the present invention, the engine intake assembly further includes: a CRV valve mounting seat and a CRV valve, the intercooler has an air inlet, the CRV valve mounting seat is arranged at the air inlet, and the CRV valve is installed on the CRV valve mounting seat.

[0030] In some examples of the present invention, the intercooler has an air inlet and an air outlet, the air outlet is connected to the throttle valve, the intercooler is tilted and the air inlet is higher than the air outlet.

[0031] In some examples of the present invention, the engine intake assembly further includes: a second bracket, the second bracket is arranged at the bottom of the intake manifold, the second bracket is provided with a fifth mounting portion, and the fifth mounting portion is used to connect to the cylinder head of the engine.

[0032] The engine system according to the utility model comprises: an engine body and the above-mentioned engine intake assembly, and a plurality of branch pipe intake passages are connected to the engine body.

[0033] In some examples of the present invention, the intake manifold is disposed obliquely upward from the engine.

[0034] The vehicle according to the utility model comprises: the engine system mentioned above.

[0035] 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

[0036] 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:

[0037] Figure 1 is a schematic structural diagram of an intake manifold from a first angle according to an embodiment of the utility model;

[0038] Figure 2 is a second angle structural schematic diagram of the intake manifold according to an embodiment of the utility model;

[0039] Figure 3 is a cross-sectional view of an intake manifold according to an embodiment of the utility model;

[0040] Figure 4 It is a schematic diagram of the local structure of the engine from the first angle;

[0041] Figure 5 It is a schematic diagram of the partial structure of the engine from a second angle;

[0042] Figure 6This is a schematic diagram of the partial structure of the engine from the second angle.

[0043] Reference numerals:

[0044] 100, intake manifold; 101, first housing; 102, second housing; 103, mounting seat; 104, first positioning portion; 105, interface for connecting the fuel evaporation pipeline; 110, pressure stabilizing chamber; 111, first guide portion; 120, branch pipe intake passage; 121, branch pipe bottom wall; 122, second guide portion;

[0045] 200, intake air temperature and pressure sensor; 300, throttle valve; 400, intercooler; 410, intercooler air inlet; 420, intercooler air outlet; 500, first bracket; 600, CRV valve mounting seat; 700, second bracket. DETAILED DESCRIPTION

[0046] Embodiments of the present invention are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary.

[0047] Reference below Figure 1-Figure 6 The intake manifold 100 according to an embodiment of the present invention is described, and the intake manifold 100 is disposed in a vehicle, for example, in an engine system.

[0048] like Figure 1-Figure 6 As shown, according to the intake manifold 100 of the utility model, a pressure stabilizing chamber 110 and a plurality of branch air inlet passages 120 are formed in the intake manifold 100, and the plurality of branch air inlet passages 120 are all connected with the pressure stabilizing chamber 110, and a first flow guide portion 111 is constructed at the bottom of the pressure stabilizing chamber 110, and a branch bottom wall 121 and a second flow guide portion 122 are constructed at the bottom of each branch air inlet passage 120, and the second flow guide portion 122 is connected with the first flow guide portion 111; wherein, the first flow guide portion 111 extends along the length direction of the pressure stabilizing chamber 110 and is constructed into an arc shape with the middle portion in the width direction being recessed downward relative to the two sides, the second flow guide portion 122 extends along the length direction of the branch air inlet passage 120 and is recessed relative to the branch bottom wall 121, and the second flow guide portion 122 is constructed into an arc shape with the middle portion in the width direction being recessed downward relative to the two sides.

[0049] It can be understood that the internal space of the intake manifold 100 forms a cavity, which is a pressure stabilizing cavity 110. The plurality of branch pipe inlet passages 120 are all connected to the pressure stabilizing cavity 110, and the plurality of branch pipe inlet passages 120 are arranged close to the cylinder, so that condensed water can flow from the pressure stabilizing cavity 110 through the plurality of branch pipe inlet passages 120 into the cylinder. A first guide portion 111 is arranged at the bottom of the pressure stabilizing cavity 110, and a second guide portion 122 is arranged at the bottom of each branch pipe inlet passage 120. The first guide portion 111 and the second guide portion 122 are arranged at the bottom of each branch pipe inlet passage 120. The two guides 122 are connected, so that the condensed water enters the pressure stabilizing chamber 110 of the intake manifold 100, and then enters the cylinder through the first guide 111 and the second guide 122. The first guide 111 is arranged along the length direction of the pressure stabilizing chamber 110, so that the condensed water in the pressure stabilizing chamber 110 can be guided through the first guide 111, and the width direction of the first guide 111 is the width direction of the contact surface of the condensed water after entering the pressure stabilizing chamber 110. This arrangement can The first guide portion 111 has a certain inclination and forms an arc shape, so that the condensed water can first contact the first guide portion 111 after entering the intake manifold 100, and the second guide portion 122 is arranged along the length direction of the branch pipe intake duct 120, and the length direction of the branch pipe intake duct 120 is the gas flow direction of the branch pipe intake duct 120. This arrangement can make the second guide portion 122 correspond to each cylinder one by one, so that the condensed water can flow into the cylinder after passing through the first guide portion 111 and the second guide portion 122, and the bottom end of the first guide portion 111 is lower than the bottom end of the branch pipe bottom wall 121, and the middle part in the width direction forms an arc shape, so that the gas entering the intake manifold 100 can have a tumbling effect in the pressure stabilizing chamber 110, and the condensed water in the intake manifold 100 flows evenly to the first guide portion 111 and the second guide portion 122, and then evenly enters each cylinder, thereby avoiding the accumulation and freezing of condensed water, and further improving the combustion stability of the engine.

[0050] Therefore, by setting the first guide part 111 at the bottom of the pressure stabilizing chamber 110, the branch pipe bottom wall 121 and the second guide part 122 are set at the bottom of each branch pipe intake duct 120, and the first guide part 111 and the second guide part 122 are connected, so that the first guide part 111 and the second guide part 122 can guide the condensed water, so that the condensed water can enter the intake manifold 100 and sink to the bottom of the pressure stabilizing chamber 110, and then pass through the first guide part 111 and then flow into each cylinder of the engine through multiple second guide parts, so as to achieve the optimized design of the intake manifold 100 and ensure that the condensed water enters each cylinder evenly, thereby avoiding the accumulation and freezing of condensed water and improving the combustion stability of the engine.

[0051] Among them, Figure 1As shown, the first air guide 111 has a first side and a second side opposite to each other along the width direction thereof, and the second side is connected to the second air guide 122; wherein the second side is arranged lower than the first side. That is to say, the side of the first air guide 111 close to the cylinder is connected to the second air guide 122, so that the condensed water flows to the second air guide 122 after passing through the first air guide 111, and the side of the first air guide 111 away from the cylinder is lower than the side close to the cylinder, so that the first air guide 111 can be formed into an arc shape. Such an arrangement can make the condensed water first contact the first air guide 111 after entering the intake manifold 100, so that the condensed water can flow to the second air guide 122 after the transition of the first air guide 11.

[0052] In addition, if Figure 1 and Figure 3 As shown, the branch pipe air inlet 120 extends obliquely downward from the pressure stabilizing chamber 110. This arrangement allows the side of the branch pipe air inlet 120 close to the cylinder to be lower than the side away from the cylinder, so that the condensed water can flow through the pressure stabilizing chamber 110 to the branch pipe air inlet 120, and then flow into the cylinder under the action of gravity, thereby facilitating the condensed water to flow into each cylinder.

[0053] Alternatively, if Figure 3 As shown, the angle between the tangent of the first guide portion 111 connected to the second guide portion 122 and the branch pipe bottom wall 121 is α, and α satisfies the relationship: α>20°. It can be understood that the angle between the tangent of the first guide portion 111 connected to the second guide portion 122 and the branch pipe bottom wall 121 should be within a reasonable range. If the angle between the tangent of the first guide portion 111 connected to the second guide portion 122 and the branch pipe bottom wall 121 is less than 20°, condensed water will remain in the first guide portion 111 after entering the intake manifold 100, thereby causing condensed water to accumulate and freeze in the intake manifold 100, thereby affecting the combustion stability of the engine. If the angle between the tangent of the first guide portion 111 connected to the second guide portion 122 and the branch pipe bottom wall 121 is within a reasonable range, condensed water accumulation and freezing can be avoided, thereby improving the combustion stability of the engine. For example, the angle between the tangent line of one side of the first guide portion 111 connected to the second guide portion 122 and the branch pipe bottom wall 121 is 21°, which makes it easier for the condensed water to flow into each cylinder after passing through the pressure stabilizing chamber 110 .

[0054] In particular, if Figure 1 and Figure 3As shown, the bottom of each branch pipe intake duct 120 is constructed with a plurality of second guide portions 122 distributed on both sides of the branch pipe bottom wall 121. Such an arrangement allows the second guide portions 122 to be located on both sides of the branch pipe bottom wall 121, so that the condensed water can flow evenly into each cylinder after passing through the second guide portions 122, thereby optimizing the branch pipe intake duct 120 and avoiding the accumulation and freezing of condensed water.

[0055] Among them, Figure 3 As shown, each branch pipe inlet duct 120 has a smooth transition between the branch pipe bottom wall 121 and the second guide portion 122. This arrangement facilitates the condensed water to flow through the second guide portion 122 after a smooth transition, thereby facilitating the flow of the condensed water between the branch pipe bottom wall 121 and the second guide portion 122, and further facilitating the condensed water to flow out of the intake manifold 100.

[0056] In addition, if Figure 3 As shown, the intake manifold 100 includes: a first shell 101 and a second shell 102, the first shell 101 is connected to the second shell 102 and together form a pressure stabilizing chamber 110, the second shell 102 forms a plurality of branch intake passages 120, and the portion of the second shell 102 that constitutes the bottom of the pressure stabilizing chamber 110 is formed with a first guide portion 111. That is to say, the first shell 101 and the second shell 102 constitute the intake manifold 100, and the space between the first shell 101 and the second shell 102 forms a pressure-stabilizing chamber 110, so that condensed water can enter the pressure-stabilizing chamber 110, and a plurality of branch pipe intake ducts 120 and a first air guide portion 111 are arranged on the second shell 102, and the first air guide portion 111 is located at the bottom of the pressure-stabilizing chamber 110, so that the condensed water can first contact the first air guide portion 111 after entering the pressure-stabilizing chamber 110, and then flow through the plurality of branch pipe intake ducts 120 and evenly flow into each cylinder, thereby avoiding the accumulation and freezing of condensed water in the intake manifold 100.

[0057] In addition, if Figure 2As shown, the intake manifold 100 also includes: a mounting seat 103 and a first sealing gasket, the mounting seat 103 is mounted on the second housing 102 and is used to connect with the cylinder head of the engine, the mounting seat 103 is configured with an outlet connected to the branch pipe intake duct 120, and the first sealing gasket is arranged on a side of the mounting seat 103 facing the cylinder head of the engine and is arranged around the outlet of the branch pipe intake duct 120. It can be understood that the mounting seat 103 is located on the side of the second shell 102 close to the cylinder head, so that the mounting seat 103 can be connected to the cylinder head, and the intake manifold 100 can be installed on the cylinder head, and an opening is set on the mounting seat 103, so that the opening can form the outlet of the branch pipe inlet duct 120, and condensed water can flow into the cylinder head and the cylinder through the branch pipe inlet duct 120, and the first sealing gasket is located on the side of the mounting seat 103 close to the cylinder head, and the first sealing gasket is arranged around the outlet of the branch pipe inlet duct 120, so as to seal the connection between the intake manifold 100 and the cylinder head, and thus ensure the airtightness of the engine.

[0058] In addition, if Figure 2 As shown, the intake manifold 100 further includes: a mounting seat 103, which is mounted on the second housing 102, and is configured with an outlet communicating with the branch pipe intake passage 120. The outer wall of the intake manifold 100 is provided with a first mounting portion, and the first mounting portion and the mounting seat 103 are both used to connect with the cylinder head of the engine. In other words, the mounting seat 103 is located on the side of the second housing 102 close to the cylinder head, so that the mounting seat 103 can be connected to the cylinder head, and the intake manifold 100 can be installed on the cylinder head, and an opening is provided on the mounting seat 103, so that the opening can form an outlet of the branch pipe intake passage 120, and condensed water can flow into the cylinder head and the cylinder through the branch pipe intake passage 120.

[0059] Among them, Figure 1 As shown, the mounting seat 103 is provided with a first positioning portion 104, and the first positioning portion 104 and the outlet are arranged at intervals on the mounting seat 103, and the first positioning portion 104 is used to position and cooperate with the cylinder head. It can be understood that the first positioning portion 104 and the outlet are arranged at intervals on the mounting seat 103, so that the first positioning portion 104 does not affect the use of the outlet, thereby facilitating the condensed water to flow from the intake manifold 100 into the cylinder, and the first positioning portion 104 can be positioned and cooperated with the cylinder head, thereby facilitating the connection between the intake manifold 100 and the cylinder head, thereby saving the occupied space of the engine.

[0060] In addition, if Figure 5 As shown, the top of the intake manifold 100 is provided with an inlet for connecting with the throttle valve 300 , so that the throttle valve 300 is conveniently arranged at the top of the intake manifold 100 , and the amount of intake air entering the intake manifold 100 can be adjusted by the opening of the throttle valve 300 .

[0061] In addition, if Figure 5 As shown, the intake manifold 100 further includes: a second sealing gasket, an end surface matched with the throttle valve 300 is arranged at the top of the intake manifold 100, the inlet is located at the end surface, and the second sealing gasket is arranged at the end surface and arranged around the inlet of the intake manifold 100. In other words, the top of the intake manifold 100 matches with the end surface of the throttle valve 300, so that the connection between the throttle valve 300 and the intake manifold 100 can be more tightly connected, and the second sealing gasket is arranged around the inlet of the intake manifold 100, so that the gap between the throttle valve 300 and the intake manifold 100 can be sealed, thereby improving the sealing performance between the throttle valve 300 and the intake manifold 100.

[0062] In addition, if Figure 5 As shown, the top of the intake manifold 100 is provided with an end face that matches with the throttle valve 300, the inlet is located at the end face, and the end face is provided with a second positioning portion, and the second positioning portion is used to position and match with the throttle valve 300. It can be understood that the second sealing gasket is provided on the end face and is arranged around the inlet of the intake manifold 100. In other words, the top of the intake manifold 100 matches with the end face of the throttle valve 300, so that the connection between the throttle valve 300 and the intake manifold 100 can be more tightly connected, and the second positioning portion is provided on the end face of the intake manifold 100 close to the throttle valve 300, and the second positioning portion and the throttle valve 300 are positioned and matched, so as to facilitate the connection between the throttle valve 300 and the intake manifold 100. For example, a positioning pin is set on the end face of the intake manifold 100 close to the throttle valve 300, and a pin hole is set on the throttle valve 300. After the throttle valve 300 and the intake manifold 100 are connected, the bolt passes through the positioning pin and the pin hole, so that the connection between the throttle valve 300 and the intake manifold 100 can be tightened.

[0063] In addition, if Figure 4 As shown, the intake manifold 100 is provided with an interface 105 connected to the fuel evaporation pipeline, and the interface is communicated with the pressure stabilizing chamber 110. It can be understood that the interface 105 connected to the fuel evaporation pipeline is provided on one side of the intake manifold 100, but the fuel evaporation pipeline is a small load channel, and the fuel has a strong volatility, so that the vapor generated by a part of the fuel can enter the intake manifold 100 through the fuel evaporation pipeline, and enter each cylinder through each branch pipe intake duct 120 to participate in combustion, thereby improving the economy and environmental protection of the engine.

[0064] In particular, if Figure 1-Figure 3 As shown, the intake manifold 100 is a plastic intake manifold 100, so that the intake manifold 100 can meet the modal requirements and reduce the weight of the engine, thereby achieving a lightweight design.

[0065] The engine intake assembly according to the embodiment of the utility model includes: the intake manifold 100 of the above embodiment, by setting the first guide part 111 at the bottom of the pressure stabilizing chamber 110, the bottom of each branch pipe inlet duct 120 is provided with a branch pipe bottom wall 121 and a second guide part 122, and the first guide part 111 and the second guide part 122 are connected, so that the first guide part 111 and the second guide part 122 can guide the condensed water, the bottom of the pressure stabilizing chamber 110 has a certain inclination angle, and the bottom of the pressure stabilizing chamber 110 and the second guide part 122 form a smooth transition shape, so that the condensed water can enter the intake manifold 100 and sink to the bottom of the pressure stabilizing chamber 110, and then pass through multiple second guide parts 122 and then flow into each cylinder of the engine through the first guide part 111, so that the intake manifold 100 can be optimized and the condensed water can be ensured to enter each cylinder evenly, thereby avoiding the accumulation and freezing of condensed water and improving the combustion stability of the engine.

[0066] In addition, if Figure 4 As shown, the engine intake assembly also includes: an intake air temperature and pressure sensor 200, which is arranged on the outer wall of the intake manifold 100 and corresponds to the position of the pressure stabilizing chamber 110, and the intake air temperature and pressure sensor 200 is used to detect the temperature and pressure of the intake air in the pressure stabilizing chamber 110. It can be understood that the intake air temperature and pressure sensor 200 is located on the outer wall of the intake manifold 100, and the intake air temperature and pressure sensor 200 corresponds to the pressure stabilizing chamber 110. Such an arrangement allows the intake air temperature and pressure sensor 200 to detect the temperature and pressure of the intake air in the pressure stabilizing chamber 110, so that the operating state of the engine can be adjusted in time, thereby improving the working efficiency of the engine.

[0067] In addition, if Figure 5 and Figure 6 As shown, the engine intake assembly further includes: a throttle valve 300 and an intercooler 400. The throttle valve 300 is disposed on the intake manifold 100 and connected to the pressure stabilizing chamber 110. The intercooler 400 is disposed on the top of the intake manifold 100 and connected to the throttle valve 300. That is, the throttle valve 300 is located on the top of the intake manifold 100, and the throttle valve 300 is connected to the pressure stabilizing chamber 110, so that the opening of the throttle valve 300 can be adjusted to control the amount of gas entering the pressure stabilizing chamber 110. The intercooler 400 is located on the top of the intake manifold 100, and the intercooler 400 is connected to the throttle valve 300. After the compressed air is cooled by the intercooler 400, the compressed air temperature is reduced, thereby forming condensed water on the pipe wall of the intercooler 400. Under the action of the compressed high-speed airflow and gravity, the condensed water enters the pressure stabilizing chamber 110, thereby preventing the condensed water from accumulating and freezing.

[0068] In addition, if Figure 5As shown, the engine intake assembly also includes: a first bracket 500, the first bracket 500 is arranged on the top of the intake manifold 100, the intercooler 400 is arranged on the first bracket 500, and is connected to the intake manifold 100 through the first bracket 500, and the first bracket 500 is provided with a second mounting portion, and the second mounting portion is used to connect with the cylinder head of the engine. It can be understood that the first bracket 500 is located at the top of the intake manifold 100, so as to facilitate the connection between the first bracket 500 and the intercooler 400, and then the intercooler 400 can be connected to the intake manifold 100, and the second mounting portion is arranged on the first bracket 500, and the second mounting portion is connected to the cylinder head, so that the intake manifold 100 can be connected to the cylinder head. For example, after the bolt passes through the second mounting portion, the intake manifold 100 and the cylinder head are connected.

[0069] In particular, if Figure 5 As shown, the intercooler 400 is provided with a third mounting portion and a fourth mounting portion, the third mounting portion is spaced apart from the first bracket 500 and connected to the intake manifold 100, and the fourth mounting portion is used to connect to the cylinder head. That is, the electrical mounting portion is connected to the intake manifold 100, and the fourth mounting portion is connected to the cylinder head, so that the intercooler 400 can be connected to the intake manifold 100 and the cylinder head respectively, and the third mounting portion and the fourth mounting portion are both rubber bushings, so that the vibration frequency between the intercooler 400, the intake manifold 100 and the cylinder head can be reduced, thereby improving the performance of the engine.

[0070] In addition, if Figure 6 As shown, the engine intake assembly further includes: a CRV valve mounting seat 600 and a CRV valve, the intercooler 400 has an intake port, the CRV valve mounting seat 600 is arranged at the intake port, and the CRV valve is mounted on the CRV valve mounting seat 600. It can be understood that the CRV valve mounting seat 600 is located at the intake port, and the CRV valve is connected to the CRV valve mounting seat 600 by bolts. When the engine stops running, the intake valve is closed, and the supercharger is still working due to inertia, which will cause the pressure in the pipeline or airway from the supercharger to the intake valve to be too high. At this time, the CRV valve is opened, so that part of the gas passes through the CRV valve pipeline connected to the CRV valve mounting seat 600 and enters the supercharger to complete the pressure relief, thereby improving the performance of the engine.

[0071] In addition, if Figure 6As shown, the intercooler 400 has an air inlet 410 and an air outlet 420, the air outlet is connected to the throttle valve 300, and the intercooler 400 is tilted and the air inlet 410 is higher than the air outlet 420. That is, the position of the intercooler air inlet 410 is higher than the intercooler air outlet 420, and after the compressed air enters the intercooler 400 from the intercooler air inlet 410, it enters the intake manifold 100 from the intercooler air outlet 420 through the throttle valve 300, so that the condensed water generated after the compressed air is cooled by the intercooler 400 can enter each cylinder through the intake manifold 100, thereby preventing the accumulation and freezing of the condensed water.

[0072] In addition, Figure 2 and Figure 3 As shown, the engine intake assembly further includes: a second bracket 700, which is disposed at the bottom of the intake manifold 100, and is provided with a fifth mounting portion, which is used to connect with the cylinder head of the engine. It can be understood that the second bracket 700 is located at the bottom of the intake manifold 100, and the fifth mounting portion is provided on the second bracket 700, and the fifth mounting portion is connected with the cylinder head, so that the intake manifold 100 can be more tightly connected with the cylinder head, thereby improving the mode and stability of the intake manifold 100.

[0073] The engine system according to the embodiment of the utility model includes: an engine body and the engine intake assembly of the above embodiment, and multiple branch intake ducts 120 are connected to the engine body. Such a configuration can avoid the accumulation and freezing of condensed water and improve the combustion stability of the engine.

[0074] In particular, as shown in the figure, the intake manifold 100 is arranged obliquely upward from the engine, so that the intake manifold 100 can form an upward flip design, thereby facilitating the condensed water to flow from the intake manifold 100 into each cylinder.

[0075] The vehicle according to the embodiment of the utility model comprises: the engine system of the above embodiment, which is configured to avoid the accumulation and freezing of condensed water and improve the combustion stability of the engine.

[0076] 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.

[0077] In the description of the present utility model, "first feature" and "second feature" may include one or more of the features. In the description of the present utility model, "plurality" means two or more. In the description of the present utility model, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. In the description of the present utility model, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

[0078] 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 expressions of the above terms do not necessarily refer to the same embodiment or example.

[0079] 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 intake manifold (100), characterized in that: A pressure stabilizing chamber (110) and a plurality of branch air inlet passages (120) are formed in the intake manifold (100); the plurality of branch air inlet passages (120) are all in communication with the pressure stabilizing chamber (110); a first flow guide portion (111) is configured at the bottom of the pressure stabilizing chamber (110); a branch air inlet passage (120) is configured at the bottom of a branch air inlet passage (120) with a branch bottom wall (121) and a second flow guide portion (122); the second flow guide portion (122) is in communication with the first flow guide portion (111); The first flow guide portion (111) extends along the length direction of the pressure stabilizing chamber (110) and is configured into an arc shape with the middle portion in the width direction being concave downward relative to both sides, and the second flow guide portion (122) extends along the length direction of the branch pipe air inlet duct (120) and is concave relative to the branch pipe bottom wall (121).

2. The intake manifold (100) according to claim 1, characterized in that: The second guide portion (122) is configured to be in the shape of an arc with the middle portion in the width direction being concave downward relative to the two sides.

3. The intake manifold (100) according to claim 1, characterized in that: The first air guide portion (111) has a first side and a second side opposite to each other along its width direction, and the second side is connected to the second air guide portion (122); Wherein, the second side is arranged lower than the first side.

4. The intake manifold (100) according to claim 1, characterized in that: The branch pipe air inlet (120) extends obliquely downward from the pressure stabilizing chamber (110).

5. The intake manifold (100) according to claim 4, characterized in that: The angle between the tangent line of the first flow guide portion (111) on one side connected to the second flow guide portion (122) and the branch pipe bottom wall (121) is α, and α satisfies the relationship: α>20°.

6. The intake manifold (100) according to claim 1, characterized in that The bottom of each branch pipe air inlet (120) is structured with a plurality of second flow guide portions (122) distributed on both sides of the branch pipe bottom wall (121).

7. The intake manifold (100) according to claim 1, characterized in that: There is a smooth transition between the branch pipe bottom wall (121) and the second flow guide portion (122) of each branch pipe air inlet channel (120).

8. The intake manifold (100) according to claim 1, characterized in that: The intake manifold (100) comprises: A first housing (101); A second shell (102), the first shell (101) and the second shell (102) are connected and together form the pressure stabilizing chamber (110), the second shell (102) forms a plurality of branch air inlet passages (120), and the portion of the second shell (102) that forms the bottom of the pressure stabilizing chamber (110) is formed with the first guide portion (111).

9. The intake manifold (100) according to claim 8, characterized in that: Also includes: A mounting seat (103), the mounting seat (103) being mounted on the second housing (102) and used for connecting to a cylinder head of an engine, the mounting seat (103) being configured with an outlet communicating with the branch pipe intake passage (120); A first sealing gasket, the first sealing gasket is arranged on a side of the mounting seat (103) facing the cylinder head of the engine and is arranged around an outlet of the branch pipe intake passage (120).

10. The intake manifold (100) according to claim 8, characterized in that Also includes: A mounting seat (103) is mounted on the second shell (102), the mounting seat (103) is configured with an outlet connected to the branch pipe intake duct (120), and the outer side wall of the intake manifold (100) is provided with a first mounting portion, and the first mounting portion and the mounting seat (103) are both used to connect to the cylinder head of the engine.

11. The intake manifold (100) according to claim 10, characterized in that The mounting seat (103) is provided with a first positioning portion (104), the first positioning portion (104) and the outlet are arranged at intervals on the mounting seat (103), and the first positioning portion (104) is used for positioning and cooperating with the cylinder head.

12. The intake manifold (100) according to claim 1, characterized in that The top of the intake manifold (100) is provided with an inlet for connecting to a throttle valve (300).

13. The intake manifold (100) according to claim 12, characterized in that Also includes: A second sealing gasket, wherein an end surface cooperating with the throttle valve (300) is arranged at the top of the intake manifold (100), the inlet is located on the end surface, and the second sealing gasket is arranged on the end surface and around the inlet of the intake manifold (100).

14. The intake manifold (100) according to claim 12, characterized in that An end surface cooperating with the throttle valve (300) is provided at the top of the intake manifold (100), the inlet is located on the end surface, and a second positioning portion is provided on the end surface, the second positioning portion being used for positioning and cooperating with the throttle valve (300).

15. The intake manifold (100) according to claim 1, characterized in that The intake manifold (100) is provided with an interface (105) connected to a fuel evaporation pipeline, and the interface is in communication with the pressure stabilizing chamber (110).

16. The intake manifold (100) according to claim 1, characterized in that The intake manifold (100) is a plastic intake manifold (100).

17. An engine air intake assembly, characterized in that: include: The intake manifold (100) according to any one of claims 1 to 16.

18. The engine air intake assembly according to claim 17, characterized in that: Also includes: An intake air temperature and pressure sensor (200), the intake air temperature and pressure sensor (200) being arranged on the outer wall of the intake manifold (100) and corresponding to the position of the pressure stabilizing chamber (110), the intake air temperature and pressure sensor (200) being used to detect the temperature and pressure of the intake air in the pressure stabilizing chamber (110).

19. The engine air intake assembly according to claim 17, characterized in that: Also includes: A throttle valve (300), the throttle valve (300) being arranged on the intake manifold (100) and connected to the pressure stabilizing chamber (110); An intercooler (400) is arranged at the top of the intake manifold (100) and is connected to the throttle valve (300).

20. The engine air intake assembly according to claim 19, characterized in that: Also includes: A first bracket (500), wherein the first bracket (500) is arranged on the top of the intake manifold (100), the intercooler (400) is arranged on the first bracket (500) to be connected to the intake manifold (100) through the first bracket (500), and the first bracket (500) is provided with a second mounting portion, and the second mounting portion is used to be connected to a cylinder head of an engine.

21. The engine air intake assembly according to claim 20, characterized in that: The intercooler (400) is provided with a third mounting portion and a fourth mounting portion, the third mounting portion being spaced apart from the first bracket (500) and connected to the intake manifold (100), and the fourth mounting portion being used for connecting to the cylinder head.

22. The engine air intake assembly according to claim 19, characterized in that: Also includes: A CRV valve mounting seat (600), the intercooler (400) having an air inlet, the CRV valve mounting seat (600) being arranged at the air inlet; A CRV valve is installed on the CRV valve mounting seat (600).

23. The engine air intake assembly according to claim 19, characterized in that: The intercooler (400) has an air inlet and an air outlet, the air outlet is connected to the throttle valve (300), and the intercooler (400) is arranged obliquely and the air inlet is higher than the air outlet.

24. The engine air intake assembly according to claim 19, characterized in that: Also includes: A second bracket (700), the second bracket (700) is arranged at the bottom of the intake manifold (100), the second bracket (700) is provided with a fifth mounting portion, and the fifth mounting portion is used to be connected to a cylinder head of an engine.

25. An engine system, characterized in that: include: Engine body; The engine intake assembly according to any one of claims 17 to 24, wherein the plurality of branch intake passages (120) are connected to the engine body.

26. The engine system according to claim 25, characterized in that: The intake manifold (100) is arranged obliquely upward from the engine.

27. A vehicle, characterized in that: include: The engine system of any one of claims 25-26.

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