Abstract: A coast stop vehicle which executes coast stop control for stopping an engine during the travel of a vehicle, is provided with a frictional engagement element provided between the engine and a driving wheel, a first deceleration calculating unit which calculates first deceleration, which is rotation deceleration of a rotation shaft on the driving wheel side of the frictional engagement element, and an engagement-state control unit which controls an engagement state of the frictional engagement element so that decrease of the engine rotation speed is suppressed on the basis of the first deceleration while the coast stop control is executed.

Abstract: A coast stop vehicle for stopping a drive source during vehicle running includes a power transmission means arranged between the drive source and drive wheels, a coast stop control means for executing a coast stop control to stop the drive source when a coast stop condition for stopping the drive source holds during the vehicle running, an electrical oil pump for supplying oil to the power transmission means during the coast stop control, a slip detection means for detecting a slip in the power transmission means during the coast stop control, and an electrical oil pump control means for causing the electrical oil pump to discharge a second discharge pressure higher than a first discharge pressure set before the slip in the power transmission means occurs when the slip occurs in the power transmission means during the coast stop control.

Abstract: An oil pump driven by an engine generates a hydraulic pressure supplied to a frictional engagement element. An accumulator provided at an intermediate position of an oil path supplies the hydraulic pressure generated by the oil pump to the frictional engagement element. A controller stops the engine after a hydraulic pressure reducing condition to reduce the hydraulic pressure supplied to the frictional engagement element holds and the hydraulic pressure supplied to the frictional engagement element is reduced.

Abstract: When the temperature of oil supplied to an electrical oil pump is detected and the oil temperature is lower or higher than normal oil temperature, a gradient threshold value smaller than that at normal oil temperature is set, a gradient of a road surface on which a vehicle is stopped is detected, and an idle stop is prohibited when the detected gradient of the road surface is larger than the set gradient threshold value.

Abstract: A coast stop vehicle includes a hydraulic pressure supplying unit which supplies a hydraulic pressure to the transmission while the engine is stopped, a coast stop start condition judging unit which judges whether or not a coast stop start condition holds, a coast stop control unit which stops the engine when the coast stop start condition is judged to hold by the coast stop start condition judging unit and starts the engine when receiving an acceleration request from a driver during the coast stop, a transmission control unit which causes a downshift of the transmission when receiving the acceleration request from the driver during the coast stop, and a hydraulic control unit which supplies the hydraulic pressure to an after-shift frictional engagement element which realizes a gear position after the downshift of the transmission during the coast stop.

Abstract: The present invention is provided with a hydraulic control circuit including a hydraulic pump driven by a driving power source in order to supply an oil pressure to a hydraulic circuit, a hydraulic auxiliary unit for supplying an accumulated oil pressure to the hydraulic circuit, and a control valve for supplying at least one of oil pressures of the hydraulic pump and the hydraulic auxiliary unit to pulleys, and a control unit for executing a coast stop control to stop the driving power source while traveling and controlling, when an increase of torque inputted to the continuously variable transmission is detected or predicted during the coast stop control, the control valve so as to supply an oil pressure of the hydraulic auxiliary unit to the pulleys.

Abstract: A control device for continuously variable transmission is composed of a continuously variable transmission mechanism and friction engagement elements, and includes a control unit for decreasing, during a coast stop control to stop a driving power source in a traveling state of a vehicle, a transmission torque capacity transmittable by the friction engagement elements to fall under a belt capacity being torque transmittable by a belt using a holding force of pulleys.

Abstract: When the temperature of oil supplied to an electrical oil pump is detected and the oil temperature is lower or higher than normal oil temperature, a gradient threshold value smaller than that at normal oil temperature is set, a gradient of a road surface on which a vehicle is stopped is detected, and an idle stop is prohibited when the detected gradient of the road surface is larger than the set gradient threshold value.

Abstract: A transmission controller operates an electrical oil pump in a steady mode, in which an operating load of the electrical oil pump is set at a steady load, during an idle stop, but operates the electrical oil pump in a high-pressure mode, in which the operating load of the electrical oil pump is higher than the steady load, for a predetermined period when an engine stops rotating.

Abstract: In the case of a return from an idle stop control in which an engine is automatically stopped, a hydraulic pressure is so supplied that a low brake is set in a completely engaged state and a high clutch is set in a slip interlock state where the high clutch is not completely engaged.

Abstract: A coast stop vehicle which executes coast stop control for stopping an engine during the travel of a vehicle, is provided with a frictional engagement element provided between the engine and a driving wheel, a first deceleration calculating unit which calculates first deceleration, which is rotation deceleration of a rotation shaft on the driving wheel side of the frictional engagement element, and an engagement-state control unit which controls an engagement state of the frictional engagement element so that decrease of the engine rotation speed is suppressed on the basis of the first deceleration while the coast stop control is executed.

Abstract: A controller of a vehicle, provided with a coast stop control unit which automatically stops an engine during the travel of a vehicle if coast stop conditions are met during the travel of the vehicle, and the coast stop control unit automatically stops the engine at least if a change amount of acceleration of the vehicle caused by the automatic stop of the engine is predetermined acceleration or less.

Abstract: A coast stop vehicle includes a hydraulic pressure supplying unit which supplies a hydraulic pressure to the transmission while the engine is stopped, a coast stop start condition judging unit which judges whether or not a coast stop start condition holds, a coast stop control unit which stops the engine when the coast stop start condition is judged to hold by the coast stop start condition judging unit and starts the engine when receiving an acceleration request from a driver during the coast stop, a transmission control unit which causes a downshift of the transmission when receiving the acceleration request from the driver during the coast stop, and a hydraulic control unit which supplies the hydraulic pressure to an after-shift frictional engagement element which realizes a gear position after the downshift of the transmission during the coast stop.

Abstract: A coast stop vehicle, includes an engine, a transmission arranged between the engine and drive wheels and having a plurality of gear positions, a coast stop starting unit which automatically stops the engine when a coast stop start condition holds during travel, a coast stop releasing unit which automatically starts the engine when a coast stop release condition holds during a coast stop, and a downshifting unit which starts engagement of a frictional engagement element, which realizes a lower gear position than the one when the coast stop release condition holds, before complete explosion of the engine and causes a downshift of the transmission when the coast stop release condition holds.

Abstract: A coast stop vehicle includes a variator which continuously changes a speed ratio by changing a winding diameter of a belt mounted on pulleys, a sub-transmission mechanism connected in series with the variator and shifting discrete gear positions by changing engaged states of a plurality of frictional engagement elements, and a coast stop unit which stops the rotation of the drive power source and releases the engaged frictional engagement element when the coast stop condition holds during travel. The coast stop unit includes a coast stop prohibiting unit which prohibits the coast stop regardless of the coast stop condition when it is predicted at the time of determining whether or not the coast stop condition holds that a belt tightening force of the pulley falls below an engaging force of the frictional engagement element in the engaged state by the execution of the coast stop.

Abstract: A coast stop vehicle which stops an engine during the travel of the vehicle is provided with a variator including a pair of pulleys and a belt mounted between the pulleys and capable of continuously changing a speed ratio. A controller judges whether or not coast stop conditions to stop the engine during the travel of the vehicle hold, stops the engine when the coast stop conditions hold, and prevents the speed ratio from being upshifted to a higher side than a speed ratio at the time of starting the coast stop control during the coast stop control.

Abstract: A hydraulic control device includes an oil pump for generating a hydraulic pressure by being rotated by power of a driving force source, a driving force source stopping unit that stops rotation of the driving force source when a predetermined condition holds, and a cut-off unit that cuts off transmission of the power from the driving force source to the oil pump when the driving force source rotates in a reverse direction as the rotation of the driving force source is stopped by the driving force source stopping unit.

Abstract: A hydraulic control circuit includes an oil pump for generating a hydraulic pressure by being rotated by power of a driving force source, a line pressure oil passage in which at least a line pressure generated by adjusting the hydraulic pressure generated by the oil pump is supplied, a driving force source stopping unit that stops the rotation of the driving force source, and a hydraulic pressure reduction suppressing unit that is provided in the line pressure oil passage and suppresses a reduction of the line pressure accompanying reverse rotation of the driving force source when the rotation of the driving force source is stopped by the driving force source stopping unit.

Abstract: A controller actuates an electrical oil pump when an idle stop condition or a coast stop condition holds and causes the actuation of the electrical oil pump to continue without being stopped until an accelerated state of a vehicle or a driver's intention to accelerate is determined even if the idle stop condition and the coast stop condition no longer holds thereafter.

Abstract: An oil pump driven by an engine generates a hydraulic pressure supplied to a frictional engagement element. An accumulator provided at an intermediate position of an oil path supplies the hydraulic pressure generated by the oil pump to the frictional engagement element. A controller stops the engine after a hydraulic pressure reducing condition to reduce the hydraulic pressure supplied to the frictional engagement element holds and the hydraulic pressure supplied to the frictional engagement element is reduced.