Valve train for engine and vehicle having same

Abstract

The invention discloses an air distribution mechanism for an engine and a vehicle with the same. The distribution mechanism comprises an air valve mechanism, a rocker arm assembly, a camshaft, a first roller, a second roller, a connecting arm and a phase adjusting mechanism, wherein the bottom of the rocker arm assembly is provided with a driving molded surface which is suitable for driving an air valve of the air valve mechanism to move along the direction which is parallel to the central line of the air valve; the first roller and the second roller are respectively arranged on the rocker arm assembly in a pivoting manner; the camshaft comprises an inner shaft and an outer shaft, which are coaxial with each other, the inner shaft and the outer shaft are respectively provided with an inner shaft cam and an outer shaft cam, which can rotate along with the corresponding shaft, the outer shaft cam pushes against the first roller, and the inner shaft cam pushes against the second roller; a first end of the connecting arm is connected with the rocker arm assembly in a pivoting manner, and a second end of the connecting arm is arranged on to a body group of the engine in a pivoting manner; the phase adjusting mechanism is used for adjusting the relative phase of the inner shaft and the outer shaft. By adopting the air distribution mechanism, the secondary opening of the air valve can be realized; meanwhile, the opening duration of the air valve can be prolonged; moreover, the structure is simple and compact, and the influence on the height of the engine is small.

Description

technical field [0001] The invention relates to the field of automobile construction, in particular to a gas distribution mechanism for an engine and a vehicle with the same. Background technique [0002] The valve mechanism of the engine is used to drive the opening and closing of the valves. The valve timing is generally determined based on the local optimization of a narrow working range of the engine. It is fixed during the working process, and the valve movement law is completely determined by the cam profile. . However, due to the single cam profile, it is impossible to adjust the valve movement law according to the actual working conditions of the engine, and it cannot adapt to different operating conditions of the engine at the same time, resulting in high fuel consumption and poor emissions. The advanced variable valve lift technology can only change the maximum lift of the valve opening, the change method is relatively simple, and the structure is complex, there a...

AI Technical Summary

Problems solved by technology

However, due to the single cam profile, it is impossible to adjust the valve movement law according to the actual working conditions of the engine, and it cannot adapt to different operating conditions of the engine at the same time, resulting in high fuel consumption and poor emissions. The advanced variable valve lift technology can only change the maximum lift of the valve opening, the change method is relatively simple, and the structure is complex, there are many parts, and the control is cumbersome

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