| 摘要 |
PURPOSE:To improve variable transmission performance by correcting the override of an electromagnetic proportional pressure control valve. CONSTITUTION:The flow rate Qr of an electromagnetic proportional pressure control valve is calculated by the oil pump discharge flow rate Q, the leak flow rate Q1 of the hydraulic circuit, and the flow rate Qs of the secondary cylinder based on the variable transmission speed of a continuous variable transmission. An override correction value Cs of the relief valve is calculated according to the flow rate Qr, and the solenoid current of the valve is corrected thereby. The flow rate Qp of a reducing valve is calculated on the basis of the variable transmission speed, and the solenoid current is corrected by the corrected value Cp according to the flow rate Qp. |
