A power unit of a utility vehicle includes a power source for travel of the utility vehicle, a continuously variable transmission, a gear transmission, and an output mechanism. The gear transmission includes a GT input shaft, a GT output shaft, and first and second GT intermediate shafts that transmit rotational power from the GT input shaft to the GT output shaft. The first GT intermediate shaft is disposed on one side with respect to the GT input shaft, and the second GT intermediate shaft is disposed on the other side with respect to the GT input shaft.

A power unit of a utility vehicle includes a power source for travel of the utility vehicle, a continuously variable transmission, a gear transmission, a first clutch, a second clutch, and an output mechanism. The gear transmission includes a first GT input shaft, a second GT input shaft, a GT output shaft, a first GT intermediate shaft, a second GT intermediate shaft, first speed-change gears, second speed-change gears, a first transmission gear, and a second transmission gear. The first clutch is configured to disable power transmission from the power source to the first GT input shaft. The second clutch is configured to disable power transmission from a CVT output shaft of the continuously variable transmission to the second GT input shaft.

A transmission device that includes a first shaft, a second shaft to which torque is transmitted from the first shaft via a torque transmitting mechanism, a tubular drive gear attached to the second shaft, and a driven gear that meshes with the drive gear, wherein the drive gear includes a plurality of outer teeth that are each meshed with a corresponding one of gear teeth of the driven gear and a fitting portion that is formed on an inner peripheral surface of the drive gear and that is fitted to the second shaft so that the drive gear rotates integrally with the second shaft.

A variable drive system to drive an accessory drive of a machine is disclosed. The variable drive system may include a first variable pulley to be mechanically coupled to the accessory drive and an engine output of an engine. The variable drive system may include a second variable pulley to be mechanically coupled to a flywheel. The variable drive system may include a drive element to rotate, according to a clutch system, about the first variable pulley and the second variable pulley to at least one of: drive the second variable pulley to charge the flywheel with kinetic energy or drive the first variable pulley via kinetic energy from the flywheel.

A vehicle includes a continuously variable transmission (CVT) operatively connected to an engine, the CVT being disposed on a right side of the engine. A sub-transmission is operatively connected to the CVT and includes: an output shaft rotatable about an output shaft axis; a plurality of sub-transmission driven members mounted to the output shaft and operatively connected to the CVT, the plurality of sub-transmission driven members including a first sub-transmission driven member and a second sub-transmission driven member; a shifter selectively drivingly engaging the first sub-transmission driven member and the second sub-transmission driven member with the output shaft; and a sub-transmission driving member mounted to the output shaft and rotatable therewith. One of a differential assembly and a spool operatively connects the sub-transmission driving member to at least one ground-engaging member of the vehicle.

A method for operating a vehicle having a dual-clutch transmission (DCT). The DCT includes first and second clutches; a first shaft operatively connected to the first clutch, the first clutch being selectively actuated to couple the first shaft to a clutch input member; a second shaft operatively connected to the second clutch, the second clutch being selectively actuated to couple the second shaft to the clutch input member; first and second driving members mounted to the first and second shafts respectively; and an output shaft operatively connecting the first and second driving members to a ground-engaging member of the vehicle. The method includes determining if the vehicle is substantially stationary; and in response to being substantially stationary, actuating the first and second clutches to cause simultaneous driving engagement of both the first and second shafts with the output shaft to thereby lock the output shaft.

A vehicle includes a continuously variable transmission (CVT) and a dual-clutch transmission (DCT) operatively connected to the CVT, the DCT includes a clutch input member operatively connected to a driven pulley of the CVT to be driven thereby; a first clutch; a second clutch; a first shaft operatively connected to the first clutch, the first clutch being selectively actuated to couple the first shaft to the clutch input member; a second shaft operatively connected to the second clutch, the second clutch being selectively actuated to couple the second shaft to the clutch input member; at least one first driving member mounted to the first shaft; at least one second driving member mounted to the second shaft; and an output shaft operatively connecting the at least one first driving member and the at least one second driving member to at least one ground-engaging member of the vehicle.

A hybrid vehicle may include an engine, a drive wheel, a CVT for driving the drive wheel by continuously changing an engine power, an electric motor for driving the drive wheel, and a transaxle mechanically linked to the drive wheel. The transaxle may include an input shaft having first and second ends axially opposite each other and a clutch interposed between the motor and the input shaft. The first end of the input shaft is structured to receive power from the CVT and the second end of the input shaft is structured to receive power from the electric motor, The clutch, the second end of the input shaft and a motor shaft serving as a rotary axis of the motor are coaxially disposed.

A gearbox for a vehicle includes: a housing; first and second shafts extending parallel to one another; first transmission gears mounted to the first shaft; and second transmission gears mounted to the second shaft. The transmission gears are helical gears. The first transmission gears are in constant mesh with the second transmission gears to form a plurality of gear pairings engageable to operate the gearbox in different gears. A drive gear is mounted to an input shaft extending into the housing. The input shaft is operatively connected to an engine of the vehicle. A driven gear is mounted to the second shaft and is configured to engage the drive gear. The drive and driven gears are spur gears. A flexible driving member is configured to drivingly connect one of the first shaft and the second shaft to an output shaft. A snowmobile including a gearbox is also contemplated.

A snowmobile has a two-stroke engine having an electronic reverse function so that a crankshaft can be selectively rotated in forward and reverse rotation directions. A gearbox has a first shaft coupled to a countershaft, a second shaft extending parallel to the first shaft, first transmission gears mounted to the first shaft and second transmission gears mounted to the second shaft. The first transmission gears are in constant mesh with the second transmission gears to form high and low gear pairings. A shifter is operable for selectively operating the gearbox in one of a high gear, a low gear and a neutral gear. The engine is selectively operable in the forward and reverse rotation directions while the gearbox is operated in at least one of the high gear, the low gear and the neutral gear.