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上海别克君越轿车2.4 L LE5发动机是在Ecotec 2.2L发动机(L61)的基础上设计出来的一款4缸发动机。在曲轴两侧有2个安装在气缸体上的平衡轴,2个平衡轴由一个滚子链条驱动,该链条同时还驱动冷却液泵,链条由一个液力张紧器来张紧,液力张紧器的压力由发动机机油泵提供。双平衡轴反向转动,转速是曲轴的2倍,以抵消曲轴转动时的振动。该平衡轴正时链条的安装和调整方法如下:
Shanghai Buick LaCrosse 2.4L LE5 engine is based on the Ecotec 2.2L engine (L61) designed a 4-cylinder engine. There are two balance shafts mounted on the cylinder block on both sides of the crankshaft. The two balance shafts are driven by a roller chain that also drives the coolant pump. The chain is tensioned by a hydraulic tensioner. The hydraulic Tensioner pressure is provided by the engine oil pump. Double counter-rotating shaft balance, the speed is 2 times the crankshaft to offset the crankshaft vibration when the rotation. The balance shaft timing chain installation and adjustment methods are as follows: