HYDRAULIC PRESSURE CONTROLLER FOR AUTOMATIC TRANSMISSION

摘要

PROBLEM TO BE SOLVED: To ensure high oil pressure without worsening workability. SOLUTION: A primary regulator valve 1400 is connected with a first oil passage 1304. The primary regulator valve 1400 controls line pressure by control pressure of a linear solenoid (SLS) 1600 and energizing force of a spring 1406. A pressure relief valve 1500 is connected with a second oil passage 1306 branched from the first oil passage. The pressure relief valve 1500 controls line pressure by control pressure of the linear solenoid (SLS) 1600 and energizing force of a spring 1506. The pressure relief valve 1500 drains oil pressure when line pressure becomes higher than a value controlled by the primary regulator valve 1400 by fuel of the primary regulator valve 1400. COPYRIGHT: (C)2006,JPO&NCIPI