Exhaust valve

An exhaust valve, valve seat technology, applied in the direction of lift valve, valve device, engine components, etc., can solve the problems of opening and closing valve cover, unstable airflow, small moment of inertia, etc., to facilitate manufacturing, avoid welding penetration, increase The effect of weight

Pending Publication Date: 2021-12-03
SHANGHAI TENNECO EXHAUST SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the small mass of the valve cover, its moment of inertia is small, and at the same time, the air flow of the engine is unstable at low speed, which may easily cause the valve cover to open and close continuously, resulting in unsmooth exhaust noise

Method used

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  • Exhaust valve
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Examples

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Embodiment Construction

[0020] Please refer to Figure 1 to Figure 4 As shown, the present invention discloses an exhaust valve 100, which includes a valve seat 1, a valve cover 2 capable of rotating relative to the valve seat 1, an elastic member 3 for abutting against the valve cover 2, and A shaft 4 cooperating with the valve seat 1 , the valve cover 2 and the elastic member 3 .

[0021] In one embodiment of the present invention, the valve seat 1 is provided with a first main body portion 11, a support portion 12, a first side wall 13 located on one side of the support portion 12, and a first side wall 13 located on the support portion 12. The second side wall 14 on the other side. The first main body 11 defines an air inlet 111 . The first sidewall 13 defines a first through hole 131 , and the second sidewall 14 defines a second through hole 141 . The support portion 12 is provided with a plurality of installation holes 120 , and the installation rods 32 are installed in the corresponding ins...

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Abstract

An exhaust valve comprises a valve seat, a valve cover capable of rotating relative to the valve seat and an elastic piece used for abutting against the valve cover. The valve seat is provided with a first body part, the first body part is provided with an air inlet hole, the valve cover is provided with a second body part matched with the air inlet hole, the valve cover is further provided with a balancing weight which is integrally formed with the second body part and formed by folding, and the balancing weight is located at the end of the valve cover. Compared with the prior art, the balancing weight which is integrally formed with the second body part and is formed by folding is arranged on the valve cover, so that the weight of the valve cover is increased, and the valve cover is not prone to being opened by pulse airflow when an engine rotates at a low speed; and in addition, the integrally-arranged balancing weight is convenient to manufacture, and the quality problems of weld penetration, splashing and the like caused by welding are solved.

Description

technical field [0001] The invention relates to an exhaust valve for a motor vehicle. Background technique [0002] Exhaust noise is one of the main sources of motor vehicle noise, and reducing exhaust noise is the main way to reduce vehicle noise. When the engine (gasoline engine or diesel engine) of a motor vehicle is working, there will be a certain back pressure due to the exhaust pipe, muffler, exhaust filter, etc. in the exhaust system, and the back pressure usually changes with the engine speed. The back pressure has a direct impact on the noise of the vehicle, the power and torque of the engine. The pressure itself will consume a certain amount of power, so the power and torque of the engine will be affected, which will affect the fuel efficiency; on the other hand, when the engine speed is low and the back pressure is small, the situation is opposite, and the noise generated in the exhaust system is very large , that is, the acoustic effect is poor, but the power ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/20F16K1/32F16K1/36F02D9/04F02D9/10
CPCF16K1/2014F16K1/32F16K1/36F02D9/1005F02D9/04
Inventor 刘健李刚齐旺明马卓
Owner SHANGHAI TENNECO EXHAUST SYST
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