Valve trains for engines

Abstract

The invention discloses an engine valve mechanism comprising a rocker shaft, a main rocker, auxiliary rockers, a lock pin component and a camshaft. The main rocker idly sleeves the rocker shaft. The main rocker is internally provided with a main oil channel and a lock pin cavity. The main oil way is communicated with the lock pin cavity. The auxiliary rockers idly sleeve the rocker shaft and are tightly attached to two sides of the main rocker. Each auxiliary rocker is internally provided with a holding cavity and an auxiliary oil channel communicated with the same. The lock pin component comprises two lock pins and an elastic member connected therebetween. Each lock pin can move between a locking position and an unlocking position; when at the unlocking position, the lock pin is totally held in the lock pin cavity; when at the locking position, part of the lock pin is located in the lock pin cavity, and the other part is located in the holding cavity on the corresponding side. The camshaft is used for driving the main rocker to act. The engine valve mechanism allows stopping of part or all of cylinders of an engine and has the advantages of high efficiency, high response speed, simple structure, long service life and low maintenance cost.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a gas distribution mechanism for an engine. Background technique [0002] Nowadays, with the shortage of oil resources and the improvement of emission requirements, more and more new engine technologies are applied to small engines to obtain better emission performance. people's attention. As we all know, gasoline engines for vehicles work under small and medium load conditions most of the time during driving, and the universal characteristic diagram of the engine shows that the economy and emission performance of the engine are poor under small and medium loads. Cylinder technology can timely close some or all cylinders according to the load of the engine, thereby reducing pumping loss and mechanical loss, and improving economy and emission performance while ensuring power performance. [0003] There are already a large number of products for the method or device for realizing parti...

AI Technical Summary

Problems solved by technology

In the existing cylinder deactivation technology using sliding pins, multiple sliding pins such as three are generally used, and the multiple sliding pins are linked in series, one of which can be used as an active pin to drive the other sliding pins, which will cause delays in the action. The response speed is slow, and there will be a large sliding friction between adjacent sliding pins, which will affect the service life

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