Patent ID: 8328686

Claim:
A shift controller of a twin clutch type transmission comprising: the transmission having a plurality of gear pairs according to speed between a main shaft and a countershaft; and a twin clutch configured by a first clutch and a second clutch respectively arranged on the main shaft, and in which torque of an engine is connected/disconnected between the engine and the transmission by the twin clutch, wherein the main shaft is configured by a first main shaft that supports a plurality of gears for odd-numbered speeds and a second main shaft that supports a plurality of gears for even-numbered speeds; the first clutch connects/disconnects the torque transmitted to the first main shaft and the second clutch connects/disconnects the torque transmitted to the second main shaft; the transmission is so configured that when a shift drum is turned to a predetermined position, a dog clutch for first speed that transmits torque of a first-speed gear and a dog clutch for second speed that transmits torque of a second-speed gear are both engaged with a predetermined gear; the shift controller includes: single oil pressure supply means that supplies oil pressure for connecting the twin clutch; oil pressure supply destination switching means that switches a destination of oil pressure supplied from the oil pressure supply means between the first clutch and the second clutch; and a controller that controls oil pressure supplied to the twin clutch and turning of the shift drum; and the controller supplies a predetermined oil pressure (P 1 ) to either of the first clutch or the second clutch in neutral and turns either corresponding to one clutch of the first main shaft or the second main shaft, starts the turning of the shift drum to the predetermined position when a shift instruction from the neutral condition to a state in which the gears are engaged is output, instructs the switching means to switch a destination of supply oil pressure to the other of the first clutch or the second clutch and supplies another oil pressure (P 3 ) which is larger than the predetermined oil pressure (P 1 ) to the other clutch during predetermined time until the other of the first main shaft or the second main shaft is turned, wherein the predetermined time is finished before timing at which the dog clutch for first speed and the dog clutch for second speed are engaged.