Valve train for engine and vehicle having same

Abstract

The invention discloses a gas distribution mechanism for an engine and a vehicle with the same. The valve mechanism includes: a valve mechanism; a rocker arm mechanism, the rocker arm mechanism includes first and second rocker arm assemblies, the bottom of the first rocker arm assembly is configured with a driving profile, and the lower end of the second rocker arm assembly is pivotally provided on the first rocker arm assembly; the first and second rollers, the first and second rollers are pivotally provided on the first and second rocker arm assemblies respectively; the first and second camshafts, the first The first and second camshafts respectively have first and second cams, the first cam abuts against the first roller and the second cam abuts against the second roller; a connecting arm, the first end of which is pivotable with the rocker mechanism The second end of the connecting arm is pivotally arranged on the body group of the engine; a phase adjustment mechanism for adjusting the relative phase of the first and second camshafts. The gas distribution mechanism of the invention can realize the secondary opening of the valve, and at the same time can prolong the opening duration of the valve, has simple structure and few parts.

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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