TH46231B - Power kit for vehicles - Google Patents

Abstract

DC60 (18/04/57) The 20 power unit for the vehicle will have crankcase 23R, 23L and crankshaft enclosure 37, continuously variable transmission of V-belt drive 35 including drive pulley 38 which is coaxial or parallel to crankshaft 37, driven pulley 39 which is parallel to the crankshaft, transmission housing 67 which is mounted on one side of crankcase 23R, 23L and continuously variable transmission enclosure 35, final output shaft 43 which is mounted on the other side. The crankcase transmits engine power through transmission mechanism 22 to the vehicle's drive wheels 14, and a wet centrifugal clutch 95 is positioned on one side of the crankcase 23R, 23L for operational connection and disconnection to the driven pulley shaft 39 and the final drive shaft 43. The power unit 20 is mounted on the vehicle with the crankshaft 37 extended transversely to the vehicle. The centrifugal clutch housing 89, containing the wet centrifugal clutch 95, is molded outside the crankcase 23R, 23L, and the transverse outer end of the centrifugal clutch housing 89 is enclosed by the transmission housing 67. The appropriate oil levels for lubricating the crankshaft 37 and the wet centrifugal clutch 95 can be set separately. The crankcase 23 can be molded with a rigid structure.

Claims (6)

OCR 08PV 1. The vehicle's powertrain assembly consists of: a crankcase housing enclosing the internal combustion engine's crankshaft, positioned transversely parallel to the vehicle's width; a continuously variable transmission (CVT) V-belt drive system comprising a drive pulley capable of rotating with the crankshaft, a driven pulley positioned parallel to the drive pulley, a driven pulley mounted on the drive pulley, and a V-belt running between the drive and driven pulleys; a transmission housing mounted on one side of the crankcase enclosing the continuously variable transmission (CVT) V-belt drive system; and a final output shaft mounted on the other side of the crankcase to transmit the internal combustion engine's power through the transmission mechanism to the vehicle's drive wheels. A wet centrifugal clutch mounted on one side of the crankcase for operational connection and disconnection between the driven pulley and the CVT final output shaft. And the centrifugal clutch housing that defines the boundaries of the centrifugal clutch chamber for the enclosing of the wet centrifugal clutch: where the enclosed centrifugal clutch housing for the wet centrifugal clutch is positioned outside the crankcase, and the transverse outer end of the centrifugal clutch chamber is covered by the transmission housing. 2. The power unit for the vehicle, which is clearly entitled to the right of ignition, where the pedal-operated starter is required, is formed beneath the space between the crankshaft and the wet centrifugal clutch when viewed from the transverse direction in order to be continuous with the interior of the crankcase. 3. Power unit for the vehicle under claim 2, where the power unit is mounted on the vehicle in such a way that the center axis of the cylinder bore and the continuously variable transmission of the V-belt drive are located on opposite sides, respectively, to the center axis of the main chassis of the vehicle body. 4. A power unit for any of the vehicles under Reservations 1 through 3, where the crankcase and transmission housing are cast products and the clutch, which is integrated into a wet centrifugal clutch, is located in the same plane as the crankcase and transmission housing joints. 5. Any of the power transmission sets under claims 1 through 4 where the G-belt is located on the outer, at least transverse, of the coupling of the transmission housing and transmission cover. 6. The power assembly pursuant to claim 5, where the fixed part of the driven pulley is positioned transversely outside the coupling of the power transmission housing and power transmission cover,