Abstract: A control system for a hybrid vehicle configured to accelerate the coasting hybrid vehicle sharply in response to a depression of an accelerator pedal. A controller is configured to: shift an operating mode from low mode to high mode at a higher speed in a case that the hybrid vehicle coasts without depressing an accelerator pedal, compared to a case that the hybrid vehicle is propelled by depressing the accelerator pedal; and delay a timing to shift the operating mode from the low mode to the high mode for a predetermined period of time when accelerating the coasting hybrid vehicle by depressing the accelerator pedal.

Abstract: A drive system includes: a first planetary gear unit, in which a carrier is connected to an internal combustion engine, a sun gear is connected to a first MG, and a ring gear is connected, via a first drive gear and a first driven gear, to a counter shaft; and a second planetary gear unit, in which a brake is provided to a sun gear, a carrier is connected to the internal combustion engine, and a ring gear is connected, via a second drive gear and a second driven gear, to the counter shaft. A gear ratio of the first drive gear and the first driven gear is larger than a gear ratio of the second drive gear and the second driven gear.

Abstract: A hybrid vehicle is provided in which deterioration of vehicle mounting characteristics is suppressed. A drive device of the vehicle includes a power splitting mechanism having a sun gear to which a first motor-generator is linked, a carrier to which an output shaft is linked, and a ring gear to which an engine is linked, and a speed reduction mechanism that transmits the torque of the output shaft to a differential mechanism while reducing the rotational speed of the output shaft. The speed reduction mechanism is built up as a chain transmission mechanism which includes a driving sprocket that rotates together with the output shaft, a driven sprocket that is provided to the differential mechanism, and a belt chain that is fitted around these sprockets.

Abstract: A drive system includes: a power split mechanism including a planetary gear unit, in which a ring gear is connected to an internal combustion engine, a sun gear is connected to a motor, and a carrier is connected to a counter shaft in a manner capable of transmitting power; a lock mechanism that can lock the sun gear; and a clutch mechanism that can engage the sun gear and the ring gear. The internal combustion engine, the power split mechanism, the motor, the lock mechanism, and the clutch mechanism are arranged on the same axis. The lock mechanism and the clutch mechanism are arranged on an opposite side of the internal combustion engine with the power split mechanism and the motor being interposed therebetween.

Abstract: A drive system includes: a first planetary gear unit, in which a carrier is connected to an internal combustion engine, a sun gear is connected to a first MG, and a ring gear is connected, via a first drive gear and a first driven gear, to a counter shaft; and a second planetary gear unit, in which a brake is provided to a sun gear, a carrier is connected to the internal combustion engine, and a ring gear is connected, via a second drive gear and a second driven gear, to the counter shaft. A gear ratio of the first drive gear and the first driven gear is larger than a gear ratio of the second drive gear and the second driven gear.

Abstract: A drive system includes: a power split mechanism including a planetary gear unit, in which a ring gear is connected to an internal combustion engine, a sun gear is connected to a motor, and a carrier is connected to a counter shaft in a manner capable of transmitting power; a lock mechanism that can lock the sun gear; and a clutch mechanism that can engage the sun gear and the ring gear. The internal combustion engine, the power split mechanism, the motor, the lock mechanism, and the clutch mechanism are arranged on the same axis. The lock mechanism and the clutch mechanism are arranged on an opposite side of the internal combustion engine with the power split mechanism and the motor being interposed therebetween.

Abstract: A driving device includes: a power distribution mechanism configured such that a ring gear is connected to an internal combustion engine, a sun gear is connected to a first MG, and a carrier is connected to a counter shaft in a power transmittable manner; and a clutch mechanism that is able to connect the sun gear to the ring gear. The internal combustion engine, the first MG, the power distribution mechanism, and the clutch mechanism are placed on the same axis. The clutch mechanism is placed on an opposite side to the internal combustion engine across the first MG and the power distribution mechanism.

Abstract: The drive apparatus (1) controls a rotating speed of a ring gear (Ri) of a power split mechanism (6) by controlling a first motor generator (3) after a rotating speed of an engine (2) is deemed to be zero by executing an engine stop control for stopping the engine (2), when a condition which a control to a clutch (31) or a parking mechanism (30) is performed is satisfied while the engine (2) is running.

Abstract: The drive apparatus (1) controls a rotating speed of a ring gear (Ri) of a power split mechanism (6) by controlling a first motor generator (3) after a rotating speed of an engine (2) is deemed to be zero by executing an engine stop control for stopping the engine (2), when a condition which a control to a clutch (31) or a parking mechanism (30) is performed is satisfied while the engine (2) is running.

Abstract: A drive system includes a transmission mechanism that establishes a plurality of gear positions comprising a first-speed through sixth-speed gear positions and a reverse-drive gear position, by switching among change gear trains and coupling a first driveshaft to an output member, and also includes a lock clutch that switches a power distribution mechanism between a locked state in which a ring gear and a carrier are coupled to each other and are inhibited from rotating in a differential fashion, and a released state in which the inhibition of the differential rotation is cancelled.

Abstract: In a locking mechanism provided with: a sleeve which is fixed in the circumferential direction and which can be stroked in the shaft line direction; a hub which can rotate in the circumferential direction orthogonal to the shaft line direction; and an actuator which can apply a driving force for displacing the sleeve in the shaft line direction, dog teeth are formed on the inner circumferential surface of the sleeve, and dog teeth are formed in the hub. Here, the engagement surfaces of the dog teeth are inclined at a predetermined angle with respect to the shaft line such that the hub performs relative rotation with respect to the sleeve in a process in which the sleeve is stroked in the shaft line direction. The ECU estimates the stroke volume of the sleeve on the basis of the rotation amount of the hub and the predetermined angle.

Abstract: In a gear shift control device for a vehicle that shifts a transmission having a plurality of gears based on a shift line set in a shift map, an upshift line for shifting to the highest gear, and a downshift line that is located in a high vehicle speed region on the side of a higher vehicle speed than the upshift line are set in the shift map. The downshift line is used when shifting from the highest gear to a prescribed gear that has a larger gear ratio than the highest gear.

Abstract: A hybrid drive device includes an input member connected to an engine; an output member connected to a wheel; a first rotating electrical machine; a second rotating electrical machine connected to the output member; and a differential gear device including at least four rotational elements. The input member, the output member, and the first rotating electrical machine are respectively connected to different rotational elements of the differential gear device. The output member is capable of selectively connecting to one of two rotational elements of the differential gear device to which neither the input member nor the first rotating electrical machine is connected.

Abstract: In a locking mechanism provided with: a sleeve which is fixed in the circumferential direction and which can be stroked in the shaft line direction; a hub which can rotate in the circumferential direction orthogonal to the shaft line direction; and an actuator which can apply a driving force for displacing the sleeve in the shaft line direction, dog teeth are formed on the inner circumferential surface of the sleeve, and dog teeth are formed in the hub. Here, the engagement surfaces of the dog teeth are inclined at a predetermined angle with respect to the shaft line such that the hub performs relative rotation with respect to the sleeve in a process in which the sleeve is stroked in the shaft line direction. The ECU estimates the stroke volume of the sleeve on the basis of the rotation amount of the hub and the predetermined angle.

Abstract: A drive unit includes: an internal combustion engine; a first motor generator; an output portion which transmits power to driving wheels of a vehicle; a second motor generator; a first differential mechanism having a sun gear, a ring gear and a carrier; a second differential mechanism having a sun gear, a ring gear and a carrier; a connecting member which connects the sun gear and the ring gear with each other; and a brake capable of switching between a fixed state in which the sun gear and the ring gear are locked with respect to a case and a released state in which the locked state is released.

Abstract: A drive system includes a transmission mechanism that establishes a plurality of gear positions comprising a first-speed through sixth-speed gear positions and a reverse-drive gear position, by switching among change gear trains and coupling a first driveshaft to an output member, and also includes a lock clutch that switches a power distribution mechanism between a locked state in which a ring gear and a carrier are coupled to each other and are inhibited from rotating in a differential fashion, and a released state in which the inhibition of the differential rotation is cancelled.

Abstract: In a gear shift control device for a vehicle that shifts a transmission having a plurality of gears based on a shift line set in a shift map, an upshift line for shifting to the highest gear, and a downshift line that is located in a high vehicle speed region on the side of a higher vehicle speed than the upshift line are set in the shift map. The downshift line is used when shifting from the highest gear to a prescribed gear that has a larger gear ratio than the highest gear.

Abstract: A hybrid drive device includes an input member connected to an engine; an output member connected to a wheel; a first rotating electrical machine; a second rotating electrical machine connected to the output member; and a differential gear device including at least four rotational elements. The input member, the output member, and the first rotating electrical machine are respectively connected to different rotational elements of the differential gear device. The output member is capable of selectively connecting to one of two rotational elements of the differential gear device to which neither the input member nor the first rotating electrical machine is connected.

Abstract: A control apparatus controls the temperature of hydraulic fluid in a power-transmission system that has a hydrodynamic power-transmission system designed to transmit power between one rotational member and the another rotational member and that has a transmission coupled to the another rotational member in such a manner that power can be transmitted. The temperature of the hydraulic fluid can be controlled by controlling a subsystem associated with the power-transmission system while a vehicle is coasting.

Abstract: A control apparatus controls the temperature of hydraulic fluid in a power-transmission system that has a hydrodynamic power-transmission system designed to transmit power between one rotational member and the another rotational member and that has a transmission coupled to the another rotational member in such a manner that power can be transmitted. The temperature of the hydraulic fluid can be controlled by controlling a subsystem associated with the power-transmission system while a vehicle is coasting.