Hydraulic system in an electro-hydraulic control for an automatic transmission for an automotive vehicle

摘要

A hydraulic system comprises a solenoid operated means (24) which is operatively connected with an accumulator control valve means (10) generating a hydraulic fluid pressure in a plurality of accumulators (64, 68). Said pressure corresponding to a pressure generated by the solenoid operated means (24) is variable and, therefore, the variation characteristic of the accumulator back-up pressure may be easily modified to comply with the output characteristics of different engines.