HYDRAULIC PRESSURE SYSTEM OF HYDRAULIC PRESSURE TYPED MOTOR VEHICLE

摘要

PURPOSE: A hydraulic pressure system is provided to smoothly work and accurately control a working device for low hydraulic pressure control. CONSTITUTION: The hydraulic pressure system comprises:a main pump(30) for discharging working hydraulic pressure; a hydraulic pressure supply line(32) connected to the main pump; a traveling plunger for driving a traveling motor connected to each hydraulic pressure supply line; a main control valve having an out trigger plunger(38) for driving an out trigger, a turning plunger(40) for driving a turning device and a center bypass(48); a hydraulic pressure returning line connected to the bypass; and a hydraulic pressure to store returning hydraulic pressure from the hydraulic pressure returning line.