Hydraulic system for use in ship gear for actuating shift elements, has high-pressure circuit for driving shift elements, low pressure circuit for supplying lubricant to marine gear, and primary pump propelled by input shaft

摘要

The system has a controller (6) for actuating shift elements and a primary pump (9) propelled by a transmission input shaft and a trolling pump (10) for producing lubrication pressure. A high-pressure circuit (1) drives the shift elements, and a low pressure circuit (2) supplies lubricant to a marine gear (14). A high-pressure system comprises the controller connected with pressure reservoirs (7). The controller comprises a response pressure valve for pressure acting upon the shift elements during shift operation.