CN215633423U

CN215633423U - Angular displacement EGR valve

Info

Publication number: CN215633423U
Application number: CN202121463507.2U
Authority: CN
Inventors: 戴斌裕
Original assignee: WENZHOU HUIZHONG ELECTRICAL AUTO PARTS CO Ltd
Current assignee: WENZHOU HUIZHONG ELECTRICAL AUTO PARTS CO Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-01-25
Anticipated expiration: 2031-06-30

Abstract

The utility model discloses an angular displacement EGR valve, which comprises a valve body, wherein an exhaust gas flow passage and an exhaust gas return passage are arranged on the valve body, a valve plate is arranged in the exhaust gas return passage, the valve plate is arranged on a rotating shaft, the exhaust gas return passage and the exhaust gas return passage are arranged in a V shape, an air inlet of the exhaust gas return passage is communicated with an air inlet of the exhaust gas return passage, a motor is arranged in the valve body, a first gear is arranged on the rotating shaft of the motor, a second gear is arranged at the tail end of the rotating shaft, the first gear and the second gear are in transmission connection through a bridging gear, the bridging gear is provided with a large gear with a larger outer diameter and a small gear with a smaller outer diameter, the large gear is in meshing transmission with the first gear, the small gear is in meshing transmission with the second gear, and a return torsion spring is arranged between the rotating shaft and the valve body. Therefore, the technical effect of accurate control of the exhaust gas backflow flow is achieved.

Description

Angular displacement EGR valve

Technical Field

The utility model relates to a component in an automobile exhaust gas circulation system, in particular to an angular displacement EGR valve.

Background

An EGR valve, also called an exhaust gas recirculation valve, is a mechatronic product mounted on a diesel engine for controlling the amount of exhaust gas recirculation in an intake system, and is a very important and critical component in an exhaust gas recirculation device. The function of the exhaust gas recirculation system is to control the amount of exhaust gas entering the intake manifold so that a certain amount of exhaust gas flows into the intake manifold for recirculation. The EGR valve is usually located on the right side of the intake manifold, near the throttle body, and is connected to the intake manifold and the exhaust manifold, and the amount of exhaust gas delivered to the intake manifold is determined by controlling the degree of opening of the valve through a vacuum tube. The waste gas discharged by the combustion of the engine is guided to the air inlet manifold to participate in the combustion so as to reduce the temperature of the combustion chamber, improve the working efficiency of the engine, improve the combustion environment, reduce the load of the engine, effectively reduce the emission of carbon monoxide compounds, reduce knocking and prolong the service life of each component.

When the existing EGR valve is used for controlling the exhaust gas reflux, the opening degree of the existing EGR valve is difficult to accurately control, so that too little or too much exhaust gas reflux enters an engine, and the waste discharge of the exhaust gas is difficult to reach the waste discharge standard.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide an angular displacement EGR valve with accurate exhaust gas recirculation flow control.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an angular displacement EGR valve, includes the valve body, be equipped with exhaust gas flow channel and exhaust gas return flow way on the valve body be equipped with the valve block in the exhaust gas return flow way, the valve block is installed at a pivot at last, exhaust gas return flow way with exhaust gas return flow way is "V" shape and arranges, and exhaust gas return flow way the air inlet with the air inlet of exhaust gas return flow way communicates with each other be equipped with the motor in the valve body, be equipped with first gear in the pivot of motor the tail end of pivot is equipped with the second gear connect through the gear drive of passing a bridge between first gear and the second gear, the gear of passing a bridge has the gear wheel that the external diameter is more and the less pinion of external diameter, gear wheel and first gear engagement transmission, pinion and second gear engagement transmission the axis of rotating with be equipped with the return torsional spring between the valve body.

An annular valve port ring is arranged at the outlet of the waste gas return channel, the middle hole of the valve port ring is a valve port, the valve plate is arranged in the valve port, the valve plate is matched with the valve port, and a sealing ring is arranged on the outer peripheral surface of the valve plate.

The valve body is provided with a guide sleeve which is sleeved on the rotating shaft.

According to the structure, the rotating speed of the motor is reduced through the carrier gear and then is transmitted to the rotating shaft, so that the output control range of the motor can be effectively enlarged, the rotating angle of the rotating shaft is controlled more accurately and reliably, and the technical effect of accurate waste gas backflow flow control is achieved.

The utility model is further described with reference to the following figures and detailed description.

Drawings

FIG. 1 is a perspective view of an embodiment of the present invention 1;

FIG. 2 is a perspective view of an embodiment of the present invention, FIG. 2;

FIG. 3 is a cut-away view of an embodiment of the present invention;

fig. 4 is a perspective view of the internal structure of the embodiment of the present invention.

Detailed Description

The following examples are given to illustrate the present invention and should not be construed as limiting the scope of the present invention.

As shown in fig. 1-4, the embodiment discloses an angular displacement EGR valve, which includes a valve body 1, a waste gas flow passage 2 and a waste gas return passage 3 are provided on the valve body 1, a valve plate 4 is provided in the waste gas return passage 3, the valve plate 4 is mounted on a rotating shaft 5, the waste gas return passage 3 and the waste gas return passage 3 are arranged in a V shape, an air inlet of the waste gas return passage 3 is communicated with an air inlet of the waste gas return passage 3, a motor 6 is provided in the valve body 1, a first gear 7 is provided on the rotating shaft of the motor 6, a second gear 8 is provided at the tail end of the rotating shaft 5, the second gear 8 is a sector gear, the first gear 7 and the second gear 8 are in transmission connection through a carrier gear 9, the carrier gear 9 has a large gear 91 with a larger outer diameter and a small gear 92 with a smaller outer diameter, the large gear 91 is in meshing transmission with the first gear 7, the small gear 92 is in meshing transmission with the second gear 8, a return torsion spring 10 is arranged between the rotating shaft 5 and the valve body 1.

An annular valve port ring 20 is arranged at the outlet position of the waste gas return channel 3, the middle hole of the valve port ring 20 is a valve port, the valve sheet 4 is arranged in the valve port, the valve sheet 4 is matched with the valve port, and a sealing ring 30 is arranged on the outer peripheral surface of the valve sheet 4. Through this structure make valve block 4 and valve port leakproofness better when closed, when valve block 4 rotates along valve port ring 20 simultaneously, aperture control is more accurate reliable.

The valve body 1 is provided with a guide sleeve 40, and the guide sleeve 40 is sleeved on the rotating shaft 5. The rotation of the rotating shaft 5 is more stable and reliable through the guide sleeve 40, and the rotation is not easy to swing, and simultaneously, the circulation of waste gas between the waste gas flow channel 2 and the waste gas return channel 3 is prevented.

By adopting the technical scheme, the rotating speed of the motor 6 is reduced through the carrier gear 9 and then is transmitted to the rotating shaft 5, so that the output control range of the motor 6 can be effectively enlarged, the rotating angle of the rotating shaft 5 is more accurate and reliable, and the technical effect of controlling the flow rate of the waste gas backflow accurately is realized.

Claims

1. The utility model provides an angular displacement EGR valve, includes the valve body, be equipped with exhaust gas flow channel and exhaust gas return flow way on the valve body be equipped with the valve block in the exhaust gas return flow way, the valve block is installed at a rotation axis last, its characterized in that: waste gas return flow way with waste gas return flow way is "V" shape and arranges, and waste gas return flow way the air inlet with waste gas return flow way's air inlet communicates with each other be equipped with the motor in the valve body, be equipped with first gear in the pivot of motor the tail end of axis of rotation is equipped with the second gear connect through the gear drive of passing a bridge between first gear and the second gear, the gear of passing a bridge has the gear wheel that the external diameter is more and the less pinion of external diameter, gear wheel and first gear engagement transmission, pinion and second gear engagement transmission the axis of rotation with be equipped with the return torsional spring between the valve body.

2. The angular displacement EGR valve of claim 1 wherein: an annular valve port ring is arranged at the outlet of the waste gas return channel, the middle hole of the valve port ring is a valve port, the valve plate is arranged in the valve port, the valve plate is matched with the valve port, and a sealing ring is arranged on the outer peripheral surface of the valve plate.

3. The angular displacement EGR valve of claim 1 wherein: the valve body is provided with a guide sleeve which is sleeved on the rotating shaft.