Displacement control for hydraulic vehicle comprising hydraulic motor and transmission comprises gear ratio control and vehicle speed detection means, control device sending gear change down signal when vehicle speed is almost stopped

摘要

The displacement control for a hydraulic vehicle comprising a hydraulic displacement motor (13) and a transmission (14) comprises a gear ratio control (16) for the transmission. There are vehicle speed detection means (31) and a control device (30) which sends a gear change down signal to the gear change control when the vehicle speed is detected is almost stopped.