【 中文摘要 】本实用新型公开了一种发动机可变气门调节系统，包括设置在发动机机体内的进气凸轮轴轮盘、排气凸轮轴轮盘、曲轴轮盘、正时皮带或正时链条、设置在进气凸轮轴轮盘和曲轴轮盘之间的张紧轮、执行器总成，进气凸轮轴轮盘和排气凸轮轴轮盘之间、排气凸轮轴轮盘和曲轴轮盘之间分别设置有执行器，其中，液压执行器固定在发动机机体上，压盘挤顶在正时皮带或正时链条上，对正时皮带或正时链条进行张紧。由于没有叶片式液压调相器，进、排气凸轮轴带轮的转动惯量得到大大减小，减轻了布置VVT系统后对链条负担增加的情况。

【 英文摘要 】The utility model discloses a variable valve adjusting system of an engine. Wherein the air inlet cam shaft wheel disc, the exhaust cam shaft wheel disc, the crankshaft wheel disc, the timing belt orthe timing chain are arranged in an engine body, and the tensioning wheel and the actuator assembly are arranged between the air inlet cam shaft wheel disc and the crankshaft wheel disc. Actuators arearranged between the air inlet cam shaft wheel disc and the air outlet cam shaft wheel disc and between the air outlet cam shaft wheel disc and the crankshaft wheel disc respectively, the hydraulic actuators are fixed to an engine body, and the pressing disc abuts against the timing belt or the timing chain in an extruding mode and tensions the timing belt or the timing chain. Due to the fact that no blade type hydraulic phase modulator is arranged, the rotational inertia of the air inlet cam shaft belt wheel and the air outlet cam shaft belt wheel is greatly reduced, and the situation that after a VVT system is arranged, the chain burden is increased is relieved.

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