An intake manifold assembly with uniform airflow distribution among EGR, carbon canister and PCV

Abstract

The present invention provides an intake manifold assembly with uniform distribution of EGR, carbon canister, and PCV airflow, and relates to the technical field of automobile engines. The intake manifold assembly with uniform distribution of EGR, carbon canister, and PCV airflow comprises an EGR pipe nozzle, a carbon canister nozzle, and a round hole. The EGR pipe nozzle comprises a total inlet, and the lower end of the total inlet is provided with a first three-cylinder and a fourth-cylinder channel opening and a first one-cylinder and a second-cylinder channel opening. The lower ends of the first three-cylinder and the first one-cylinder channel openings are respectively provided with a first four-cylinder airway inlet, a first three-cylinder airway inlet, a first two-cylinder airway inlet, and a first one-cylinder airway inlet. The carbon canister nozzle comprises an air inlet, and the lower end of the air inlet is provided with a pressure stabilizing chamber, and the lower end of the pressure stabilizing chamber is provided with four branch airways, and one end of the four branch airways is provided with an airway opening. Through the designed intake manifold, the EGR gas, carbon canister gas, and PCV gas can be evenly distributed to each cylinder of the engine, thereby improving the comprehensive performance of the engine.

Description

Technical Field

[0001] The invention relates to the technical field of automobile engines, in particular to an intake manifold assembly with uniform airflow distribution among EGR, carbon canister and PCV. Background Art

[0002] The intake manifold is a very important component in the engine, which directly affects the performance of the engine. The intake manifold is a component that sends the fuel mixture into the engine cylinder head and guides the air flow. It is also a support for other pipelines and smaller accessories. The intake manifold needs to receive exhaust gas from other systems, mix them evenly, and send them into the combustion chamber for combustion.

[0003] In an engine, if the EGR, carbon canister, and PCV airflows are obviously unevenly distributed, it will affect the engine's comprehensive emissions and performance and trigger fuel consumption issues. Therefore, those skilled in the art provide an intake manifold assembly with evenly distributed EGR, carbon canister, and PCV airflows to solve the problems raised in the above background technology. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the shortcomings of the prior art, the present invention provides an intake manifold assembly with uniform distribution of EGR, carbon canister and PCV airflow. In an engine, if the EGR, carbon canister and PCV airflow are obviously unevenly distributed, it will affect the comprehensive emission and performance of the engine and trigger the fuel consumption rate problem. The intake manifold designed by the present invention can achieve uniform distribution of EGR gas, carbon canister gas and PCV gas to each cylinder of the engine, thereby improving the comprehensive performance of the engine.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an intake manifold assembly with uniform airflow distribution of EGR, carbon canister and PCV, comprising an EGR pipe nozzle, a carbon canister nozzle and a round hole, the EGR pipe nozzle comprising a main inlet, the lower end of which is provided with a first three-cylinder and a fourth-cylinder channel opening and a first one-cylinder and a second-cylinder channel opening, the lower ends of the first three-cylinder and the first one-cylinder channel openings are respectively provided with a first four-cylinder airway inlet, a first three-cylinder airway inlet, a first two-cylinder airway inlet and a first one-cylinder airway inlet;

[0008] The carbon canister nozzle comprises an air inlet, a pressure stabilizing chamber is arranged at the lower end of the air inlet, four air passages are arranged at the lower end of the pressure stabilizing chamber, and an air passage opening is arranged at one end of the four air passages;

[0009] The main channel, the second first and second cylinder channel openings and the second third and fourth cylinder channel openings are arranged at the upper end of the circular hole, the first branch port and the second branch port are arranged on one side of the second first and second cylinder channel openings and the second third and fourth cylinder channel openings respectively, the second second cylinder airway inlet and the second third cylinder airway inlet are arranged on one side of the first branch port and the second branch port respectively, and the second first cylinder airway inlet and the second fourth cylinder airway inlet are arranged on the other side of the first branch port and the second branch port respectively.

[0010] Through the above technical scheme, the assembly of the intake manifold and the specific gas flow direction at each position of the EGR pipe nozzle, carbon canister nozzle and circular hole and the opening positions of the channel openings, airway inlets and diversion openings in the EGR pipe nozzle, carbon canister nozzle and circular hole are determined, so as to better transport the gas and deliver it into the combustion chamber for combustion.

[0011] Preferably, the exhaust gas enters the EGR channel through the EGR nozzle on the intake manifold, and a large inclination angle is designed at the channel entrance;

[0012] Through the above technical solution, smooth air flow can be ensured.

[0013] Preferably, the airflow enters the secondary channel from the main inlet 11 through the main channel, is split at the secondary channel inlet, and flows to the first one and second cylinder channel openings and the first three and fourth cylinder channel openings respectively, and enters the tertiary channel from the first one and second cylinder channel openings and the first three and fourth cylinder channel openings respectively.

[0014] Preferably, the three-stage channel is divided into two parts. In the first part, the airflow passes through the first and second cylinder channel ports and then splits, and flows into the first cylinder airway inlet and the first and second cylinder airway inlet to both sides respectively. In the second part, the airflow passes through the first and third cylinder channel ports and then splits, and flows into the first cylinder airway inlet and the first and fourth cylinder airway inlet to both sides respectively.

[0015] Through the above technical solution, the airflow is distributed to four air passages step by step through each channel, is fully mixed under the impetus of fresh air in the air passage, and is finally sent to the combustion chamber of each cylinder for secondary combustion.

[0016] Preferably, the gas from the carbon canister flows in from the carbon canister nozzle on the intake manifold, is fully mixed with the fresh air flowing in from the air inlet in the pressure stabilizing chamber, flows through the four air passages respectively, and finally flows into the cylinder head combustion chamber from the air passage opening for combustion;

[0017] Through the above technical solution, the carbon canister nozzle is arranged at the air inlet, which is conducive to the carbon canister gas and fresh air meeting at the first time, and fully mixing in the pressure stabilizing chamber and evenly distributed to each cylinder.

[0018] Preferably, the PCV gas flows in from the circular hole on the intake manifold connected to the cylinder head, and the airflow enters the secondary channel from the main inlet through the main channel, is split at the secondary channel inlet, passes through the second one and two cylinder channel ports and the second three and four cylinder channel ports respectively, and enters the tertiary channel from the first split port and the second split port inlet respectively.

[0019] Preferably, the three-stage channel is divided into two parts. In the first part, the airflow is split after passing through the first split port and flows into the second first cylinder airway inlet and the second second cylinder airway inlet to both sides respectively.

[0020] Preferably, in the second part, the airflow is split after passing through the second split port, and flows into the second three-cylinder airway inlet and the second four-cylinder airway inlet to both sides respectively;

[0021] Through the above technical solution, the airflow is distributed to the four air passages step by step through each channel, and under the impetus of fresh air, it fully flows into the combustion chamber of each cylinder for combustion.

[0022] Working principle: When the intake manifold assembly with uniform airflow distribution of EGR, carbon canister and PCV is put into use, the EGR gas channel is designed so that the EGR exhaust gas entering the chamber has a buffering and flow stabilizing effect. The exhaust gas passes through the guide channel and is evenly distributed to each cylinder. At the same time, the length of the channel can ensure that the EGR gas outflow rate remains stable. The manifold flange integrates the PCV gas channel, which not only saves external space, but also achieves the effect of consistent PCV gas volume and rate entering each cylinder through the layered distribution of the three-level channels. The carbon canister nozzle is arranged at the air inlet, which is conducive to the carbon canister gas and fresh air meeting at the first time, and fully mixing in the pressure stabilizing chamber and evenly distributed to each cylinder.

[0023] (III) Beneficial effects

[0024] The present invention provides an intake manifold assembly with uniform distribution of EGR, carbon canister and PCV airflow. It has the following beneficial effects: by designing the EGR gas channel, the EGR exhaust gas entering the chamber has a buffering and stabilizing effect, and the exhaust gas is evenly distributed to each cylinder through the guide channel. At the same time, the length of the channel can ensure that the EGR gas outflow rate remains stable. The manifold flange integrates the PCV gas channel, which not only saves external space, but also achieves the effect of consistent PCV gas volume and rate entering each cylinder through the layered distribution of the three-level channels. The carbon canister nozzle is arranged at the air inlet, which is conducive to the carbon canister gas and fresh air meeting at the first time, and fully mixing in the pressure stabilizing chamber and evenly distributed to each cylinder. Thereby improving the comprehensive performance of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A front view of an intake manifold of an intake manifold assembly with uniform airflow distribution among EGR, carbon canister and PCV of the present invention;

[0026] Figure 2 A rear view of an intake manifold of an intake manifold assembly with uniform airflow distribution among EGR, carbon canister and PCV of the present invention;

[0027] Figure 3 It is a schematic diagram of the EGR channel structure of an intake manifold assembly with uniform distribution of EGR, carbon canister and PCV airflow according to the present invention;

[0028] Figure 4 A schematic diagram of a carbon canister gas flow structure of an intake manifold assembly with uniform distribution of EGR, carbon canister, and PCV airflows according to the present invention;

[0029] Figure 5 The present invention is a structural schematic diagram of a PVC channel of an intake manifold assembly for evenly distributing EGR, carbon canister and PCV airflow.

[0030] Among them, 1. EGR take-off nozzle; 11. Main inlet; 12. First, third and fourth cylinder channel openings; 13. First, first and second cylinder channel openings; 14. First, fourth cylinder airway inlet; 15. First, third cylinder airway inlet; 16. First, second cylinder airway inlet; 17. First, first cylinder airway inlet; 2. Carbon canister nozzle; 21. Air intake; 22. Pressure stabilizing chamber; 23. Four branch airways; 24. Airway opening; 3. Round hole; 31. Main channel; 32. Second, first and second cylinder channel openings; 33. Second, third and fourth cylinder channel openings; 34. First branch port; 35. Second branch port; 36. Second, first cylinder airway inlet; 37. Second, second cylinder airway inlet; 38. Second, third cylinder airway inlet; 39. Second, fourth cylinder airway inlet. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1:

[0033] like Figure 1-5 As shown, an embodiment of the present invention provides an intake manifold assembly with uniform airflow distribution of EGR, carbon canister, and PCV, including an EGR pipe nozzle 1, a carbon canister nozzle 2, and a round hole 3. The EGR pipe nozzle 1 includes a main inlet 11, and a first third- and fourth-cylinder channel port 12 and a first first- and second-cylinder channel port 13 are disposed at the lower end of the main inlet 11. A first fourth-cylinder airway inlet 14, a first third-cylinder airway inlet 15, a first second-cylinder airway inlet 16, and a first first-cylinder airway inlet 17 are disposed at the lower ends of the first third- and fourth-cylinder channel ports 12 and the first first- and second-cylinder channel ports 13, respectively.

[0034] The carbon canister nozzle 2 includes an air inlet 21, a pressure stabilizing chamber 22 is disposed at the lower end of the air inlet 21, four air passages 23 are disposed at the lower end of the pressure stabilizing chamber 22, and an air passage opening 24 is disposed at one end of the four air passages 23;

[0035] The upper end of the circular hole 3 is provided with a main channel 31, a second first and second cylinder channel opening 32 and a second third and fourth cylinder channel opening 33, a first branch port 34 and a second branch port 35 are respectively provided on one side of the second first and second cylinder channel opening 32 and the second third and fourth cylinder channel opening 33, a second second cylinder air passage inlet 37 and a second third cylinder air passage inlet 38 are respectively provided on one side of the first branch port 34 and the second branch port 35, a second first cylinder air passage inlet 36 and a second fourth cylinder air passage inlet 39 are respectively provided on the other side of the first branch port 34 and the second branch port 35, the assembly of the intake manifold and the specific gas flow directions at each position of the EGR pipe nozzle 1, the carbon canister nozzle 2 and the circular hole 3 and the opening positions of the channel openings, air passage inlets and branch ports in the EGR pipe nozzle 1, the carbon canister nozzle 2 and the circular hole 3 are determined, so as to better transport the gas and send it into the combustion chamber for combustion.

[0036] The exhaust gas enters the EGR channel through the EGR nozzle 1 on the intake manifold. A large inclination angle design is made at the entrance of the channel to ensure smooth airflow. The airflow enters the secondary channel through the main entrance 11 through the main channel 31, and is split at the entrance of the secondary channel to flow to the first one and second cylinder channel ports 13 and the first three and fourth cylinder channel ports 12 respectively. The third-level channel is divided into two parts. In the first part, the airflow is split after passing through the first one and second cylinder channel ports 13. The air flows into the first cylinder airway inlet 17 and the first cylinder airway inlet 16 on both sides respectively. In the second part, the airflow is divided after passing through the first cylinder airway inlet 12 and the fourth cylinder airway inlet 15 and the first cylinder airway inlet 14 on both sides respectively. The airflow is distributed to the four branch airways 23 step by step through each channel, and is fully mixed under the impetus of the fresh air in the airway, and finally sent to the combustion chamber of each cylinder for secondary combustion. The gas from the carbon canister flows into the carbon canister nozzle 2 on the intake manifold and is combined with the fresh air flowing in from the intake port 21 in the pressure stabilizing chamber. 22 is fully mixed and evenly flows through four air passages 23 respectively, and finally flows into the cylinder head combustion chamber from the air passage opening 24 for combustion. The carbon canister nozzle 2 is arranged at the air inlet 21, which is conducive to the carbon canister gas and fresh air meeting at the first time, and fully mixing in the pressure stabilizing chamber 22, and evenly distributed to each cylinder. The PCV gas flows in from the circular hole 3 connected to the cylinder head on the intake manifold, and the air flow enters the secondary channel from the main inlet 11 through the main channel 31, and is divided at the entrance of the secondary channel, and passes through the second first and second cylinder channel openings 32 and the second third and fourth cylinder channel openings 33 respectively, and is The first branch port 34 and the second branch port 35 enter the three-stage channel respectively. The three-stage channel is divided into two parts. In the first part, the airflow is divided after passing through the first branch port 34, and flows into the second first cylinder air duct inlet 36 and the second second cylinder air duct inlet 37 on both sides respectively. In the second part, the airflow is divided after passing through the second branch port 35, and flows into the second third cylinder air duct inlet 38 and the second fourth cylinder air duct inlet 39 on both sides respectively. The airflow is distributed to the four air ducts 23 step by step through each channel, and fully flows into the combustion chamber of each cylinder for combustion under the impetus of fresh air.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art 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 appended claims and their equivalents.

Claims

1. An intake manifold assembly for uniformly distributing the airflow of EGR, carbon canister and PCV, comprising an EGR nozzle (1), a carbon canister nozzle (2) and a circular hole (3), characterized in that: The EGR nozzle (1) comprises a main inlet (11), a first third-cylinder and fourth-cylinder channel opening (12) and a first first-cylinder and second-cylinder channel opening (13) are provided at the lower end of the main inlet (11), and a first fourth-cylinder airway inlet (14), a first third-cylinder airway inlet (15), a first second-cylinder airway inlet (16) and a first first-cylinder airway inlet (17) are provided at the lower ends of the first third-cylinder and fourth-cylinder channel openings (12) and the first first-cylinder and second-cylinder channel openings (13); The carbon canister nozzle (2) comprises an air inlet (21), a pressure stabilizing chamber (22) is provided at the lower end of the air inlet (21), four air passages (23) are provided at the lower end of the pressure stabilizing chamber (22), and an air passage opening (24) is provided at one end of the four air passages (23); The upper end of the circular hole (3) is provided with a main channel (31), second first and second cylinder channel openings (32) and second third and fourth cylinder channel openings (33); the second first and second cylinder channel openings (32) and second third and fourth cylinder channel openings (33) are provided with a first flow diversion port (34) and a second flow diversion port (35) on one side, respectively; the first flow diversion port (34) and the second flow diversion port (35) are provided with a second second cylinder airway inlet (37) and a second third cylinder airway inlet (38) on one side, respectively; the second first cylinder airway inlet (36) and the second fourth cylinder airway inlet (39) are provided on the other side of the first flow diversion port (34) and the second flow diversion port (35); The exhaust gas EGR enters the EGR channel through the EGR nozzle (1) on the intake manifold, and a large inclination angle is designed at the entrance of the channel; The airflow passes through the main channel (31) and enters the secondary channel from the main inlet (11), is split at the entrance of the secondary channel, and flows to the first one and second cylinder channel openings (13) and the first three and fourth cylinder channel openings (12) respectively, and enters the tertiary channel from the first one and second cylinder channel openings (13) and the first three and fourth cylinder channel openings (12) respectively; The three-stage channel is divided into two parts. In the first part, the airflow passes through the first cylinder channel opening (13) and then splits, and flows into the first cylinder airway inlet (17) and the first cylinder airway inlet (16) on both sides respectively. In the second part, the airflow passes through the first cylinder channel opening (12) and then splits, and flows into the first cylinder airway inlet (15) and the first cylinder airway inlet (14) on both sides respectively. The gas from the carbon canister flows in from the carbon canister nozzle (2) on the intake manifold, is fully mixed with the fresh air flowing in from the intake port (21) in the pressure stabilizing chamber (22), flows through four air passages (23) respectively, and finally flows into the cylinder head combustion chamber from the air passage port (24) for combustion; The PCV gas flows in from the circular hole (3) connected to the cylinder head on the intake manifold, and the gas flow enters the secondary channel from the main inlet (11) through the main channel (31), and is split at the entrance of the secondary channel, passing through the second first and second cylinder channel openings (32) and the second third and fourth cylinder channel openings (33), and respectively entering another third-level channel from the first splitting opening (34) and the second splitting opening (35).

2. An intake manifold assembly with uniform airflow distribution among EGR, carbon canister and PCV according to claim 1, characterized in that: The other three-stage channel is divided into two parts. In the first part, the airflow passes through the first branch port (34) and then branches, and flows into the second cylinder 1 airway inlet (36) and the second cylinder 2 airway inlet (37) on both sides respectively. In the second part, the airflow passes through the second branch port (35) and then branches, and flows into the second cylinder 3 airway inlet (38) and the second cylinder 4 airway inlet (39) on both sides respectively.

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