摘要:
A hybrid control system for a hybrid electric vehicle (HEV) includes a hybrid control module. The hybrid control module includes a first motor control module that controls output torque of a first motor. A second motor control module controls output torque of a second motor based on a second motor torque request signal. The second motor torque request signal is generated based on a transmission output torque request signal prior to startup of an engine of the HEV. An override module generates a torque override request signal during the startup. The first motor control module controls output torque of the first motor to crank the engine during the startup. The second motor control module adjusts output torque of the second motor based on the torque override request signal and not the transmission output torque request signal during the startup to minimize vehicle jerk during the engine start.
摘要:
A hybrid control system for a hybrid electric vehicle (HEV) includes a hybrid control module. The hybrid control module includes a first motor control module that controls output torque of a first motor. A second motor control module controls output torque of a second motor based on a second motor torque request signal. The second motor torque request signal is generated based on a transmission output torque request signal prior to startup of an engine of the HEV. An override module generates a torque override request signal during the startup. The first motor control module controls output torque of the first motor to crank the engine during the startup. The second motor control module adjusts output torque of the second motor based on the torque override request signal and not the transmission output torque request signal during the startup to minimize vehicle jerk during the engine start.
摘要:
A method minimizes driveline disturbances in a vehicle having a motor generator unit (MGU) and a controller, which may be a motor control processor or a hybrid control processor. The method includes determining a set of motor values of the MGU, including a change in motor speed, a derivative of the change in motor speed, and a motor jerk value; calculating a corrective final torque value for the MGU as a function of the set of motor values; and commanding the corrective final torque value from the MGU during a predetermined event, e.g., engine restart. Calculations and commanding the corrective final torque value are conducted by the controller within a calibrated minimum processing loop time. A vehicle includes first and second MGUs, and a controller electrically connected to the second MGU. The controller has the algorithm for minimizing driveline disturbances as noted above.
摘要:
A method minimizes driveline disturbances in a vehicle having a motor generator unit (MGU) and a controller, which may be a motor control processor or a hybrid control processor. The method includes determining a set of motor values of the MGU, including a change in motor speed, a derivative of the change in motor speed, and a motor jerk value; calculating a corrective final torque value for the MGU as a function of the set of motor values; and commanding the corrective final torque value from the MGU during a predetermined event, e.g., engine restart. Calculations and commanding the corrective final torque value are conducted by the controller within a calibrated minimum processing loop time. A vehicle includes first and second MGUs, and a controller electrically connected to the second MGU. The controller has the algorithm for minimizing driveline disturbances as noted above.
摘要:
A hybrid vehicle includes an electric motor with a rotatable rotor. A centrifugally-actuated clutch has a first rotatable member, a second rotatable member, and at least one actuator member attached to the first rotatable member. One of the first rotatable member and the second rotatable member is operatively connected to the wheels. The other of the first rotatable member and the second rotatable member is operatively connected to the rotor. The actuator member is configured to transfer torque between the first rotatable member and the second rotatable member by an amount that decreases due to centrifugal force acting on the actuator member as a rotational speed of the first rotatable member increases. A method of control is also provided.
摘要:
A hybrid vehicle includes an electric motor with a rotatable rotor. A centrifugally-actuated clutch has a first rotatable member, a second rotatable member, and at least one actuator member attached to the first rotatable member. One of the first rotatable member and the second rotatable member is operatively connected to the wheels. The other of the first rotatable member and the second rotatable member is operatively connected to the rotor. The actuator member is configured to transfer torque between the first rotatable member and the second rotatable member by an amount that decreases due to centrifugal force acting on the actuator member as a rotational speed of the first rotatable member increases. A method of control is also provided.
摘要:
A control strategy for launching a motor vehicle includes using an electric motor to provide high torque at low speeds during synchronization of launch clutches. An internal combustion engine is started and connected with the electric motor to provide additional torque capacity. Selective engagement and disengagement of an engine disconnect clutch prevents the engine start from interfering with the motor vehicle launch.
摘要:
A method for operating a motor vehicle hybrid powertrain having an engine, a motor-generator and a multi-speed automatically-shiftable transmission, wherein the engine and the motor-generator operate to supply torque to the transmission for driving a vehicle. The method includes modulating the torque supply from the motor-generator to the transmission during a gear shift to minimize a transmission output torque disturbance.
摘要:
A method of controlling operation of an electric all-wheel drive hybrid vehicle having an engine, automatic transmission, and first and second motor-generators includes driving the vehicle via the second motor-generator. The method also includes determining desired engine speed and transmission gear ratio. The method also includes starting the engine via the first motor-generator and locking up all but one of a plurality of transmission torque transmitting devices required to be engaged for selecting the gear ratio. The method additionally includes modulating engagement of the one remaining torque transmitting device while controlling the engine to generate the desired engine speed. Furthermore, the method includes regulating the engine and the first motor-generator such that their combined torque is approximately zero, locking up the remaining torque transmitting device to select the gear ratio, and controlling the engine to generate desired transmission output torque. A system for controlling such a vehicle is also disclosed.
摘要:
An electric motor damping module includes an electric motor, a motor damper continuously interconnected with the electric motor, and an input member continuously interconnected with the motor damper. A transmission includes these elements, plus an output member, first, second, and third planetary gear sets each having first, second and third members, a first interconnecting member continuously interconnecting the third member of the first planetary gear set with the second member of the second planetary gear set, a second interconnecting member continuously interconnecting the second member of the first planetary gear set and the output member with the third member of the third planetary gear set, and a third interconnecting member continuously interconnecting the third member of the second planetary gear set with the second member of the third planetary gear set. The transmission also includes six torque transmitting mechanisms and a hydraulic pump. A sealing assembly is also provided.