| 摘要 |
PURPOSE:To prevent time lag upon select operation, by providing a choke-type throttle valve in an oil passage, and not operating an accumulator at a low oil temperature. CONSTITUTION:When oil temperature is very low, the viscosity of the oil is very high. Since a flow resistance of a choke-type throttle valve 56 is very high in the case of the extremely high viscosity of the oil, the oil in an oil passage 58b cannot almost pass through the choke-type throttle valve 56, but a large part of the oil in the oil passage 58b is supplied to a rear clutch R/C. Accordingly, even when the viscosity of the oil is high because of the low oil temperature, the oil pressure is relatively rapidly applied to the rear clutch, and no time lag occurs upon select operation. |
