V型发动机, 正时链系统, 设计方法, 总体布局, 磨损试验

A design method for V type engine timing chain system was proposed herein, which adopted an idler shaft sprocket to divide the slack side of the chain into two segments, and utilized an arm assy-tensioner to tension this slack side. The working stroke of the tensioner’s plunger can be decreased by this way, so the mechanical structure of this chain system can be compacted obviously. The calculation methods for choosing timing chain and for validating it static strength were also given via an example. The experimental results show that the engine timing chain system designed by this method has outstanding smooth and wear resistance performance, which also shows that the design method proposed here is very effective and scientific. 

V type engine, timing chain system, design method, general arrangement, wear test