Patent claim: The method according to claim 2 wherein performing the drive control of the vehicle based on the operation parameter and the selected operation mode of the vehicle comprises when the selected operation mode is an EV mode determining whether the speed of the vehicle is greater than a second speed threshold if the speed of the vehicle is less than or equal to the second speed threshold determining whether the required torque of the vehicle is less than or equal to a first torque threshold if the required torque of the vehicle is less than or equal to the first torque threshold controlling the synchronizer to disengage and operating the second motor generator with the required torque if the required torque of the vehicle is greater than the first torque threshold determining whether the required torque of the vehicle is greater than a sum of the first torque threshold and a second torque threshold if the required torque of the vehicle is less than or equal to the sum of the first torque threshold and the second torque threshold controlling the synchronizer to engage operating the second motor generator with the first torque threshold and operating the first motor generator with a difference between the required torque and the first torque threshold if the required torque of the vehicle is greater than the sum of the first torque threshold and the second torque threshold controlling the synchronizer to engage calculating a first operation torque of the second motor generator according to the required torque the first torque threshold and the second torque threshold operating the second motor generator with the first operation torque and operating the first motor generator with a difference between the required torque andthe first operation torque if the speed of the vehicle is greater than the second speed threshold determining whether the required torque of the vehicle is less than or equal to the first torque threshold if the required torque of the vehicle is less than or equal to the first torque threshold controlling the synchronizer to engage and operating the second motor generator with the required torque if the required torque of the vehicle is greater than the first torque threshold determining whether the required torque of the vehicle is greater than the sum of the first torque threshold and the second torque threshold if the required torque of the vehicle is less than or equal to the sum of the first torque threshold and the second torque threshold controlling the synchronizer to engage operating the second motor generator with the first torque threshold and operating the first motor generator with a difference between the required torque and the first torque threshold if the required torque of the vehicle is greater than the sum of the first torque threshold and the second torque threshold controlling the synchronizer to engage calculating the first operation torque of the second motor generator according to the required torque the first torque threshold and the second torque threshold operating the second motor generator with the first operation torque and operating the first motor generator with the difference between the required torque and the first operation torque.

Related passage: A stopper not shown is provided so that the low speed engineside gear 4 and the high speed engineside gear 6 can not be moved in the axial direction of the input shaft 40.Grooves not shown which are adapted to engage with a plurality of the grooves 10 of the input shaft 40 are provided on the inside face of the hub 7 whereby the hub 7 is movable in the axial direction of the input shaft 40 but the movement toward the rotational direction of the input shaft 40 is limited.Therefore in casewhere the moving start clutch 39 is connected the torque output from the engine 1 is transmitted to the hub 7.