Hydraulic control system of variable pressure ratio engine

摘要

The invention relates to a hydraulic control system (3) for a variable compression ratio engine, which comprises: - a control actuator (30), a piston (30a) and a main body (30b), wherein two hydraulic chambers (31, 32) with equivalent sections are defined on both sides of the piston (30a),-A hydraulic control system (37) includes: * at least one conduit (37B, 37C) connecting two hydraulic chambers (31, 32) and a driving fluid distribution device (372) for establishing or preventing fluid communication between the two hydraulic chambers (31, 32), *At least one conduit (37d) and a first check valve (373) connected to at least one hydraulic chamber (32) and low pressure oil supply (60) to resume control of the hydraulic system (37) when the pressure in the hydraulic chamber is lower than the low pressure.Will be published with summary:（f）Igor3a