Electrohydraulic system and method for use of hydraulically activated differential clutch, working with two valve arrangements

摘要

The system (10) comprises an electronic control unit (54) and a first fluid duct (16) connected to the pressure chamber (18) of a first differential clutch (12). A first valve arrangement (40) separates the first fluid duct (16) in a resting position from a motor/pump unit (32) and connects the components in an activated condition. A second valve arrangement (42) separates the first fluid duct (16) from a fluid reservoir (34) in a resting position and connects the parts for working. The first (40) and the second valve arrangement (42) are controlled by the electronic unit (54) in order to create a particular predetermined pressure.