Abstract
To achieve variable compression ratio, the multi-link system which has secondary merit as good quietness performance and low opportunity loss is selected. Under these circumstances, it is very important how to design the journal bearings and bushes which is added as important elements to constitute the multi-link system. In this paper, it is described that how to design the journal bearings and bushes for multi-link system based on each peculiar load characteristic and sliding characteristic. At that time, each dynamic characteristic and cooling effect by the engine oil by the added oil feeding path is considered.
