Abstract: A motor vehicle drive includes an electric motor and at least one clutch in the drive line between the electric machine and the driven wheels of a motor vehicle. If the special case occurs in which high torques have to be supplied by the electric motor when the vehicle speed is very low or when the vehicle is stationary, the clutch is operated in a torque-transmitting slipping manner, ensuring that neither the electric machine nor the clutch are thermally overloaded.

Abstract: In an auxiliary machine drive system of an automatic engine stop-restart system equipped automotive vehicle capable of automatically stopping or restarting an engine depending on vehicle operating conditions, an electromagnetic clutch is disposed between the engine and at least one auxiliary machine for connecting and disconnecting an engine crankshaft to and from the auxiliary machine. An electromagnetic clutch control unit deenergizes the electromagnetic clutch at least in an engine running state, and energizes it only when a predetermined energizing condition is satisfied. The predetermined energizing condition includes at least an engine stopped state. The electromagnetic clutch is comprised of a normally-engaged electromagnetic clutch that is engaged when deenergized, and disengaged when energized.

Abstract: A vehicular power-transmission control system comprises a continuously variable transmission CVT, which transmits the output of an engine E to wheels, a starting clutch 5, which controls the transmission of power in the continuously variable transmission, an electrical motor generator M, which can assist the engine in rotational drive, and a hydraulic pump P, which is connected to the output shaft of the engine. When the vehicle, which has come into a halt with the engine consequently stopped in an idling elimination control, is to be restarted, the power-transmission control system controls the electrical motor generator to rotate the output shaft of the engine, to which fuel supply is not allowed, thereby to drive the pump. Thereafter, when the starting clutch receiving a hydraulic pressure from the hydraulic pump starts its engagement, the power-transmission control system starts the operation of the engine.

Abstract: When a hybrid vehicle picks up speed, the torque of a first motor is gradually reduced based on a vehicle speed before the vehicle speed reaches a vehicle speed threshold. When the vehicle speed is equal to or greater than the vehicle speed threshold, the torque of the first motor is reduced to zero. If the vehicle speed is equal to or greater than the vehicle speed threshold, then a third clutch connected to the first motor is disengaged.

Abstract: A shift control system for hybrid vehicles which is constructed to transmit a motive energy of the prime mover to a wheel via a clutch and a transmission, comprises an electric power generating means for generating an electric power by the motive energy of the prime mover, and for supplying the generated electric power to an electric motor, when executing a gear shift of the transmission and transmitting the motive energy of the motor to the wheel.

Abstract: A control and control method for a powertrain for a parallel hybrid electric vehicle (HEV) method and system, including a pre-transmission internal combustion engine (ICE), an electric traction motor/generator (motor), and a controller for the motor to emulate the behavior of the internal combustion engine. Emulation strategy allows the use of the same transmission hardware and control for both the engine and the motor in each of several operating modes. The complexity of the parallel HEV powertrain system is reduced, and vehicle performance is consistent with a substantially constant drive force.

Abstract: A vehicle control device for front and rear wheel drive vehicles, which have one wheel pair driven with an engine and the other pair driven with an electrical motor, and a torque converter with a lock-up mechanism controlling the engagement amount, has a lock-up control means changing the target slip amount to be set in accordance with driving conditions, a motor drive power setting means which sets the drive power distribution ratio of the motor and a compensation means which compensates the target slip amount according to the drive power distribution ratio set by the motor drive power setting means. The control device enables the setting of the optimum slip ratio of the torque converter to improve the fuel consumption, avoiding problems associated with: noise and vibration during the motor assisting.

Abstract: A driving force control apparatus is provided for a vehicle capable of preventing a shock from being generated by disengaging a clutch disposed between a subordinate drive source and subordinate drive wheels during vehicle travel. When a transition determination is made in which the clutch will be released, e.g., from a four-wheel drive state to a two-wheel drive state, a clutch release section disengage the clutch, upon the drive torque of the drive source substantially reaching a target drive torque in which a difference between an output torque of the clutch and an input torque of the clutch is smaller than a prescribed value in response to the transition determination.

Abstract: A hybrid power system with continuously variable speed, comprising a first power unit, a secondary shaft, a speed converter, a clutch, a second transmission device, and an electric motor. The first power unit has a primary shaft. The secondary shaft is driven by the primary shaft in a rotational movement. The speed converter is placed between the primary shaft and the secondary shaft, having a transmission belt, transmitting torque from the primary shaft to the secondary shaft. The clutch is set on the primary shaft or on the secondary shaft and has a drum, allowing or interrupting transmission of torque from the first power unit to the secondary shaft. The second transmission device is connected with the drum of the clutch. The electric motor is connected with the secondary shaft, either driving the secondary shaft or being driven by the secondary shaft to generate electricity or running idle.

Abstract: A double clutch transmission in connection with an electric unit, as well as a method for operating the transmission.

Abstract: A motor vehicle drive includes an electric motor and at least one clutch in the drive line between the electric machine and the driven wheels of a motor vehicle. If the special case occurs in which high torques have to be supplied by the electric motor when the vehicle speed is very low or when the vehicle is stationary, the clutch is operated in a torque-transmitting slipping manner, ensuring that neither the electric machine nor the clutch are thermally overloaded.

Abstract: When the engine torque starts decreasing prior to disengagement of a clutch, the motor torque realMT is controlled to compensate for the deficiency in the engine torque tpsET due to the decrease in the engine torque. Further, the motor torque realMT is controlled to compensate for a deficiency in the engine torque tpsET after engagement of the clutch until increasing of the throttle opening is completed. By controlling the motor torque as such, the reduction in the engine torque tpsET can be compensated for by the motor torque realMT not only when the clutch is being disengaged but also prior to the disengagement of the clutch and after engagement thereof, thus preventing fluctuation in acceleration of the vehicle due to the increase and decrease in torque.

Abstract: A parallel hybrid vehicle can achieve regeneration efficiency in a regenerating operation by employing an electromagnetic two-way clutch which is superior in engaging and disengaging, can shorten a length in axial direction and can provide great freedom in layout. The parallel hybrid vehicle includes an engine, a motor generator having both functions of a generator and a motor, a transmission, a torque combining mechanism combining an output torque of the engine and an output torque of the motor generator by a planetary gear mechanism for outputting torque, control means for controlling output torque of the motor generator and rotating condition, and an electromagnetic two-way clutch mechanism selectively controlling engaging and disengaging between respective elements of the planetary gear mechanism.

Abstract: A method for controlling gear shifting in a motor vehicle which utilizes a drive assembly that includes an internal combustion engine having an output shaft, a multiple-gear transmission having a transmission input and a transmission output shaft that be selective coupled and uncoupled from one another, a main clutch assembly capable of causing the transmission input shaft and output shaft to be selectively coupled or uncoupled, an electrical machine capable of being selectively coupled to the transmission input shaft via an intermediate transmission, and a control unit for controlling the electrical machine and/or the intermediate transmission during gear shifting, as a function of a standard shift value provided to the transmission along with the operating parameters and the operating states of the components.

Abstract: An apparatus and a method of controlling a vehicle is provided for correcting a lowered value of the torque of an output shaft in the gear shifting and suppressing a revolution speed of an input shaft on the basis of the lowered torque correction. The torque of the input shaft is adjusted at the termination of the gear shifting on the basis of the lowered torque correction.

Abstract: A control apparatus for controlling an automotive vehicle having an internal combustion engine provided as one drive unit for driving the vehicle, a starter motor for starting the engine, a clutch device which is released to substantially disconnect a power transmitting path between the drive wheels and the engine, and another drive unit operatively connected to drive wheels, the control apparatus including a first engine-starting device for placing the clutch device in its released state and activating the starter motor to start the engine, when the vehicle is running in a running condition in which the engine cannot be started with a kinetic energy of the vehicle while the clutch device is placed in its engaged state, and a second engine-starting device for placing the clutch device in the engaged state, to start the engine with the vehicle kinetic energy, when the vehicle is running in a running condition in which the engine can be started with the kinetic energy with the clutch device held in the engaged

Abstract: A control apparatus and method of a vehicle is provided for correcting a lowered value of the output shaft torque in the gear shifting and suppressing a input shaft speed on the basis of the lowered torque correction. The input shaft torque is adjusted at the termination of the gear shifting on the basis of the lowered torque correction.

Abstract: A hybrid car, which can utilize the merits of both the series system hybrid car and the parallel system hybrid car and has high fuel consumption efficiency, is provided. Only one electric rotary machine is mounted in order to reduce the total weight of the car. By eliminating energy to be lost by friction of an internal combustion engine during regenerative braking, energy efficiency regenerated by the regenerative braking is improved. The internal combustion engine, a motor-generator, a clutch and a change gear are connected in the sequence and a unidirectional rotation transmitting means is provided between the internal combustion engine and the motor-generator.

Abstract: The power train of a motor vehicle employs a hybrid drive including a combustion engine and an electrical machine. The transmission of the power train is shiftable into different gears in dependency upon the operating conditions of the vehicle. Such conditions include a traction condition when the vehicle is propelled by the engine and/or by the electrical machine, a coasting condition when the vehicle is being decelerated with attendant conversion of kinetic energy into electrical and/or rotational energy and storage of converted energy, a cold starting condition when the cold engine is started by the electrical machine, and a warm starting condition when the hot engine is started by the electrical machine and/or by at least one flywheel.

Abstract: A Motor vehicle transmission, shiftable between different transmission ratios, with an input shaft, an output shaft, and in some cases a countershaft has a plurality of gears arranged to cooperate in gear pairs, a plurality of gears arranged to cooperate in gear pairs, a plurality of clutches, and an electro-mechanical energy converter. The electro-mechanical energy converter can be coupled to the transmission through at least one of the clutches in order to perform at least one of the functions of starting the combustion engine of the vehicle, temporarily replacing or assisting the combustion engine in propelling the vehicle, maintaining vehicle traction during gear shifts, generating electrical energy from kinetic energy, and storing said electrical energy in a storage device.

Abstract: The engine control system for a hybrid vehicle, according to the present invention, having an internal combustion engine and an electric motor as driving force sources, comprises: a clutch, provided between the engine and a transmission system, for disabling and enabling driving force transmission between the engine and the transmission system; clutch disengagement detector for detecting engagement/disengagement of the clutch; engine speed detector for detecting an engine speed; and fuel cutter for permitting stopping and restarting of the engine in accordance with at least a result of detection by the clutch disengagement detector among predetermined drive conditions, and cutting fuel supply to the engine when the vehicle decelerates, a fuel-supply restart engine speed at which fuel supply is resumed being set in the fuel cutter.

Abstract: In a series-parallel hybrid vehicle, a check is made to see if there is any trouble of a clutch such as slip or overheating in an engaged state of the clutch, and upon detection of a clutch trouble, the vehicle is driven in accordance with a series hybrid type to prevent driving characteristics from being deteriorated by the clutch trouble.

Abstract: In a series-parallel hybrid vehicle, a check is made to see if there is any trouble of a clutch such as slip or overheating in an engaged state of the clutch, and upon detection of a clutch trouble, the vehicle is driven in accordance with a series hybrid type to prevent driving characteristics from being deteriorated by the clutch trouble.

Abstract: The prime mover of a power train for use in a motor vehicle normally drives a flywheel by way of a first engageable/disengageable clutch, and the flywheel drives the rotary input member of an automated change-speed transmission assembly by way of a second engageable/disengageable clutch. At least one first auxiliary aggregate (such as the pump of a power steering unit) can receive torque directly from the prime mover, and at least one second auxiliary aggregate (such as the compressor of an air conditioning system) can receive torque from the input member of the transmission assembly or from the prime mover. The rotary output member of the transmission assembly can receive torque from a continuously variable transmission which receives torque from the input member by way of a planetary, or from a planetary which receives torque from a continuously variable transmission. The internal gear of the planetary can be arrested by a stationary brake to thus interrupt the transmission of torque to the output member.

Abstract: A power output apparatus (20) of the invention includes an engine (50), a clutch motor (30), an assist motor (40), and a controller (80) for controlling the clutch motor (30) and the assist motor (40). In response to an engine stop signal to stop operation of the engine (50), the controller (80) successively lowers a torque command value of the clutch motor (30) and a target engine torque and a target engine speed of the engine (50) to make the engine (50) kept at an idle. The assist motor (40) is controlled to use power stored in a battery (94) and make up for a decrease in torque output to a drive shaft (22) accompanied by the decrease in torque command value of the clutch motor (30). When the engine (50) falls in the idling state, supply of fuel into the engine (50) is stopped to terminate operation of the engine (50). In this state, the drive shaft (22) is driven and operated only by the torque of the assist motor (40), which is generated by the power stored in the battery (94).

Abstract: A drive system for driving at least one and preferably, a plurality of driven components. The drive system includes a multi-drive plate for securedly mounting and accurately positioning a plurality of drive system components on a single support structure. The drive system also has a single drive belt for being driven by at least one driving member. The multi-drive plate supports and aligns pulleys connected to the driving member and the driven component so that the single drive belt drives at least one driven component. The driving device may include a clutch for allowing the drive system to be driven by a main driving device or by an auxiliary drive device. The driving device and the at least one driven component are mounted on the same side of the multi-drive plate. The pulleys attached to the driving device and the at least one driven component and the serpentine belt are mounted on another side of the multi-drive plate so that the serpentine belt is easily accessible.

Abstract: A disengageable free wheel includes a shaft and a ring which can rotate only in a free direction with respect to the shaft. The free wheel includes a motor for rotating the shaft in its free direction, whereby the ring can rotate at most as fast as the shaft in the direction opposite to its free direction.