摘要:
A hydraulic pressure control device is provide for a belt type continuously variable transmission that appropriately controls hydraulic pressure supplied to each pulley. The hydraulic pressure control device has a positive input torque calculation section that calculates a positive input torque that is inputted to a primary pulley from an engine; a reverse input torque calculation section that calculates a reverse input torque based on the calculated speed ratio and the positive input torque; and a hydraulic pressure regulation section that calculates a hydraulic pressure of hydraulic fluid supplied to each pulley depending on the sum of the positive input torque and reverse input torque and controls hydraulic pressure to each the pulley to the calculated hydraulic pressure.
摘要:
A hydraulic pressure control device is provide for a belt type continuously variable transmission that appropriately controls hydraulic pressure supplied to each pulley. The hydraulic pressure control device has a positive input torque calculation section that calculates a positive input torque that is inputted to a primary pulley from an engine; a reverse input torque calculation section that calculates a reverse input torque based on the calculated speed ratio and the positive input torque; and a hydraulic pressure regulation section that calculates a hydraulic pressure of hydraulic fluid supplied to each pulley depending on the sum of the positive input torque and reverse input torque and controls hydraulic pressure to each the pulley to the calculated hydraulic pressure.
摘要:
A torque control device is provided to prevent slipping of a belt (23) of a belt type continuously variable transmission (20). The torque control device calculates a positive input torque inputted from an engine (80) to a primary pulley (21), and calculates a reverse input torque inputted from a drive wheel (70) to the primary pulley based on the positive input torque and a speed ratio of a continuously variable section. The torque control device then restricts an output torque from the engine so that the total torque can be lower than or equal to the torque capacity of the belt when the vehicle is in a running state in which the reverse input torque is likely to occur and the total torque which is the sum of the positive input torque and the reverse input torque exceeds the torque capacity.
摘要:
When a throttle is substantially fully open and startup is not underway, a CVT control unit (20) controls a speed ratio in accordance with a fully open speed change line. When the throttle is substantially fully open and startup is underway, the CVT control unit (20) controls the speed ratio in accordance with a fully open startup speed change line. When the throttle is substantially fully open, startup is underway, and the number of times the primary pulley rotation speed exceeds a belt assurance upper limit value exceeds an assurance frequency number, the CVT control unit (20) controls the speed ratio in accordance with the full throttle speed change line instead of the full throttle startup speed change line, even though the throttle is substantially fully open and vehicle startup is underway.
摘要:
When a throttle is substantially fully open and startup is not underway, a CVT control unit (20) controls a speed ratio in accordance with a fully open speed change line. When the throttle is substantially fully open and startup is underway, the CVT control unit (20) controls the speed ratio in accordance with a fully open startup speed change line. When the throttle is substantially fully open, startup is underway, and the number of times the primary pulley rotation speed exceeds a belt assurance upper limit value exceeds an assurance frequency number, the CVT control unit (20) controls the speed ratio in accordance with the full throttle speed change line instead of the full throttle startup speed change line, even though the throttle is substantially fully open and vehicle startup is underway.