Patent ID: 7976432
Filing Date: 2011-07-12
Classification: F16H,Y10T

Abstract:
1. A sequential automatic transmission including shift gears for transmitting the rotation of an engine inputted by way of a first clutch and a second clutch arranged in parallel to a transmission output shaft, the sequential automatic transmission further comprising: a selection lever for selecting either one of a neutral position and a drive position as a shift position; and a hydraulic control unit for changing over the shift gears among multiple shift stages; wherein the sequential automatic transmission is configured such that when the neutral position is selected as the shift position and a vehicle speed V of a vehicle which mounts the sequential automatic transmission thereon is equal to or more than a preset low speed Vref, a changeover of the shift gears to one of the shift stages is performed by the hydraulic control unit using a transmission map which sets the shift stages using the vehicle speed V and a throttle opening degree as parameters, wherein the preset low speed Vref is set to a value less than a maximum value of the vehicle speed V corresponding to a first speed, the first speed being the shift stage which enables the vehicle speed V to be lower than when the shift gears are in others of the shift stages.