Patent claim: The vehicle according to claim 13 wherein the controller performs the drive control of the vehicle based on the operation parameter and the selected operation mode of the vehicle by after entering the HEVeco highelectricquantity mode if the speed of the vehicle is greater than a third speed threshold or the maximum discharge power of the power battery is less than or equal to a third discharge power threshold or the slope of the road where the vehicle runs on is greater than a third slope threshold controlling the vehicle to switch to a HEVeco highspeed highelectricquantity mode determining whether the required torque of the vehicle is less than or equal to a third torque threshold if the required torque of the vehicle is less than or equal to the third torque threshold controlling the synchronizer to engage operating the second motor generator with the required torque and controlling the first motor generator and the engine unit to stop if the required torque of the vehicle is greater than the third torque threshold determining whether the required torque of the vehicle is less than or equal to a sum of the third torque threshold and a fourth torque threshold if the required torque of the vehicle is less than or equal to the sum of the third torquethreshold and the fourth torque threshold controlling the synchronizer to engage operating the second motor generator with the third torque threshold operating the engine unit with a difference between the required torque and the third torque threshold and controlling the first motor generator to stop if the required torque of the vehicle is greater than the sum of the third torque threshold and the fourth torque threshold determining whether the required torque of the vehicle is less than or equal to a sum of the third torque threshold the fourth torque threshold and a fifth torque threshold if the required torque of the vehicle is less than or equal to the sum of the third torque threshold the fourth torque threshold and the fifth torque threshold controlling the synchronizer to engage operating the second motor generator with the third torque threshold operating the engine unit with the fourth torque threshold and operating the first motor generator with a difference between the required torque and the sum of the third torque threshold and the fourth torque threshold if the required torque of the vehicle is greater than the sum of the third torque threshold the fourth torque threshold and the fifth torque threshold controlling the synchronizer to engage calculating a second operation torque of the second motor generator according to the third torque threshold the fourth torque threshold and the fifth torque threshold operating the second motor generator with the second operation torque operating the engine unit with the fourth torque threshold and operating the first motor generator with a difference between the required torque and a sum of the second operation torque and the fourth torque threshold andor wherein the controller performs the drive control of the vehicle based on the operation parameter and the selected operation mode of the vehicle by after entering the HEVeco mediumelectricquantity mode if the speed of the vehicle is greater than a third speed threshold or the maximum discharge power of the power battery is less than or equal to a third discharge power threshold or the slope of the road where the vehicle runs on is greater than a third slope threshold controlling the vehicle to switch to a HEVeco highspeed mediumelectricquantity mode determining whether the required torque of the vehicle is less than or equal to a fourth torque threshold if the required torque of the vehicle is less than or equal to the fourth torque threshold controlling the synchronizer to engage connecting the engine unit and the first motor generator inparallel to generate electricity and controlling the second motor generator to stop if the required torque of the vehicle is greater than the fourth torque threshold determining whether the required torque of the vehicle is less than or equal to a sum of the first torque threshold and the fourth torque threshold if the required torque of the vehicle is less than or equal to the sum of the first torque threshold and the fourth torque threshold controlling the synchronizer to engage operating the engine unit with the fourth torque threshold operating the second motor generator with a difference between the required torque and the fourth torque threshold and controlling the first motor generator to stop if the required torque of the vehicle is greater than the sum of the first torque threshold and the fourth torque threshold determining whether the required torque of the vehicle is less than or equal to a sum of the first torque threshold the second torque threshold and the fourth torque threshold if the required torque of the vehicle is less than or equal to the sum of the first torque threshold the second torque threshold and the fourth torque threshold controlling the synchronizer to engage operating the engine unit with the fourth torque threshold 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 sum of the first torque threshold and the fourth torque threshold if the required torque of the vehicle is greater than the sum of the first torque threshold the second torque threshold and the fourth torque threshold controlling the synchronizer to engage calculating a third operation torque of the second motor generator according to the first torque threshold the second torque threshold and the fourth torque threshold operating the second motor generator with the third operation torque operating the engine unit with the fourth torque threshold and operating the first motor generator with a difference between the required torque and a sum of the third operation torque and the fourth torque threshold.

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.