Patent ID: 8915822
Filing Date: 2014-12-23
Classification: B60K,B60W,F16D,F16H,Y02T,Y10T

Abstract:
1. A vehicle driving system, including: an internal combustion engine portion which generates a rotational power; a transmission mechanism which shifts the rotational power generated in the internal combustion engine portion and outputs the shifted rotational power; a one-way clutch which is provided in an output portion of the transmission mechanism, the one-way clutch including: a driving target member which is connected to the output member of the one-way clutch, and is rotatable integrally with a driving wheel to transmit the rotational power of the output member to the driving wheel; a clutch mechanism which is interposed between the output member of the one-way clutch and the driving target member, and can transmit/disconnect power therebetween by being ON/OFF-controlled; a clutch mechanism controller which controls ON/OFF of the clutch mechanism; an uphill state detection unit which detects an uphill state of a vehicle; and a determination unit which detects whether or not a vehicle-backward-movement prevention control is required according to the uphill state detected by the uphill state detection unit, wherein the transmission mechanism includes: wherein the transmission mechanism is configured by a four bar linkage continuously variable transmission mechanism in which the eccentricity can be set to zero and the gear ratio can be set to infinity, wherein an output shaft of the internal combustion engine portion is connected to an input shaft of the continuously variable transmission mechanism, wherein a one-way clutch which is a component of the continuously variable transmission mechanism also serves as the one-way clutch which is provided between the transmission mechanism and the driving target member, and wherein the clutch mechanism controller makes the clutch mechanism enter ON state when the determination unit determines that the vehicle-backward-movement prevention control is required, and makes the clutch mechanism enter OFF state when the determination unit determines that the vehicle-backward-movement prevention control is not required.