Gas distributing system and engine
A technology of valves and driving rods, which is applied to the lubrication of engine components, machines/engines, and engines. It can solve the problems of single cam shape, wear of the gas distribution system, and dispersion of lubricating oil, etc., and achieve continuous change of valve lift and ensure Working precision and reliability, the effect of meeting the power demand
Active Publication Date: 2020-03-03
BORGWARD AUTOMOTIVE CHINA CO LTD
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Problems solved by technology
However, in the prior art, the movement law of the valve is completely controlled by the cam profile, but because the cam profile is single, it cannot meet the requirements of the valve lift in different working conditions of the engine, resulting in the problems of high residual exhaust gas coefficient and insufficient combustion , the cost performance is low; at the same time, in the prior art, the joint surface of each component is lubricated by the lubricating oil generated by the cam rotation, because the lubricating oil generated by the cam rotation is too scattered, and the effective lubricating oil is too little, especially the cam and The friction position of the roller and the friction position of the valve and the rocker arm are also constantly changing, resulting in poor lubrication and serious wear of the joint surfaces of the gas distribution system in the motion contact.
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[0025] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.
[0026] In this disclosure, unless stated otherwise, the orientation words used such as "up and down" usually mean that the end close to the rocker arm is up, and the end far away from the rocker arm is down, and "inside and outside" are for The inside and outside of the outline of each component are defined.
[0027] Such as Figure 1 to Figure 6 As shown, the present disclosure provides an air distribution system, including a rocker arm 1, a cam, a hydraulic tappet 2 and a valve 70, and the hydraulic tappet 2 and the valve 70 respectively abut against the two ends of the rocker arm 1, wherein the air distribution system The system also includes a roller as...
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The invention relates to a gas distributing system and an engine. The gas distributing system comprises a rocker arm, a cam, a hydraulic tappet and a valve. The hydraulic tappet and the valve abut against the two ends of the rocker arm correspondingly. The gas distributing system further comprises a roller assembly movably arranged in the rocker arm to abut against the cam, a drive device for enabling the roller assembly to reciprocate between the valve and the hydraulic tappet and a lubricating oil way for lubricating the gas distributing system. The cam drives the roller assembly to enable the rocker arm to swing around the hydraulic tappet, wherein the lubricating oil way is arranged in the drive device, and an oil supply way for supplying lubricating oil to the lubricating oil way is formed in the hydraulic tappet. As the lubricating oil way is simultaneously arranged in the drive device, the valve lift is continuously variable, and therefore the power requirements in different working conditions of the engine are met. Meanwhile, self-lubrication of the gas distributing system can be achieved, and the working precision and the reliability of the whole gas distributing system are guaranteed.
Description
technical field [0001] The present disclosure relates to the field of engine gas distribution, and in particular, relates to a gas distribution system and an engine. Background technique [0002] The gas distribution system of the engine includes hydraulic tappets, rocker arms, valves and cams. The rocker arms take the hydraulic tappets as the fulcrum, press the cams against the rollers of the rocker arms, and drive the rocker arms to rotate around the hydraulic tappets to Realize that the other end of the rocker arm presses the valve so that the valve reciprocates in the valve guide to realize the change of the valve lift. However, in the prior art, the movement law of the valve is completely controlled by the cam profile, but because the cam profile is single, it cannot meet the requirements of the valve lift in different working conditions of the engine, resulting in the problems of high residual exhaust gas coefficient and insufficient combustion , the cost performance ...
Claims
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IPC IPC(8): F01L13/00F01M9/10
CPCF01L13/0021F01M9/10F01M9/101
Inventor 张文德朱亭诺张志文王照坤
Owner BORGWARD AUTOMOTIVE CHINA CO LTD