CONTROLLER FOR AUTOMATIC TRANSMISSION AND CONTROL METHOD FOR AUTOMATIC TRANSMISSION

摘要

An ECU starts a release control that reduces a first hydraulic oil pressure Pc1 supplied to a first clutch when a vehicle stops and a neutral control start condition is met (first timing t11). After termination of the release control, the ECU performs an in-neutral control for bringing the first clutch into a condition close to a stroke-end condition. That is, the ECU performs a check control that causes the first hydraulic oil pressure Pc1 to microscopically fluctuate only three times and, if the first clutch is determined to be in a stroke near-end condition, reduces the first hydraulic oil pressure Pc1 supplied to the first clutch by an amount of reduction in pressure Pdec, and keeps the pressure constant thereafter (fifth timing t15).