摘要:
A hybrid powertrain system includes an input member, first and second torque machines, a differential gear set including first, second and third elements, an output member, and first, second, and third selectable one-way clutches (SOWC), each operative in one of a respective deactivated state and a respective plurality of activated states. The second torque machine is rotatably coupled to the first element of the differential gear set, and the output member is rotatably coupled to the second element of the differential gear set. The first SOWC is configurable to prevent rotation of the third element of the differential gear set in a first rotational direction when controlled to a first one of the respective plurality of activated states, and configurable to prevent rotation of the third element of the differential gear set in a second rotational direction opposite the first rotational direction when controlled to a second one of the respective plurality of activated states. The first torque machine is coupled to the third element of the differential gear set only when the second SOWC is controlled to one of the respective plurality of activated states. And, the third element of the differential gear set coupled to the input member only when the second and third SOWCs are each controlled to one of the respective plurality of activated states.
摘要:
A hybrid powertrain system includes first and second torque machines, a differential gear set including first, second and third elements, an output member, and first, second, and third selectable one-way clutches (SOWC). The first SOWC is configurable to prevent rotation of the third element of the differential gear set in a first rotational direction when controlled to a first activated state, and configurable to prevent rotation of the third element of the differential gear set in a second rotational direction opposite the first rotational direction when controlled to a second activated state. The first torque machine is coupled to the third element of the differential gear set only when the second SOWC is controlled to one of the activated states. And, the third element of the differential gear set is coupled to the input member only when the second and third SOWCs are each controlled to one of the activated states.
摘要:
A clutch includes a pilot valve, a regulating valve, and a clutch control valve. The pilot valve is configured to produce a pilot signal and includes a first valve, which is a MEMS microvalve. The regulating valve is in fluid communication with the pilot valve, and is configured to receive the pilot signal. The regulating valve is further configured to output a control signal. The clutch control valve is configured to engage and disengage the clutch in response to the control signal. The clutch may be configured as one of a wet clutch and a dry clutch.
摘要:
A powertrain system in a mild hybrid vehicle includes a hydraulic device, a pilot valve, and a regulator valve. The pilot valve is operably connected to the hydraulic device and configured to actuate. The pilot valve includes at least one micro-electro-mechanical systems (MEMS) based device. The regulator valve is operably connected to the pilot valve and the hydraulic device. The regulator valve is configured to direct fluid to the hydraulic device based on the actuation of the pilot valve.
摘要:
A pressure control system configured to control a selectable one-way clutch (SOWC) includes a pilot valve and a SOWC actuator. The pilot valve is configured to produce a pilot signal and includes a first valve, which is a MEMS microvalve. The pressure control system may further include a regulating valve in fluid communication with the pilot valve and configured to receive the pilot signal. The regulating valve is further configured to output a control signal. The SOWC actuator is configured to select between operating modes of the selectable one-way clutch in response to one of the pilot signal and the control signal.
摘要:
A torque transmitting system includes a case, first and second clutch plates, and a ramp member that is selectively rotatable about an axis and that defines a ramp surface. The system also includes an electric motor having a motor housing, wherein the case is rotatable relative to the housing about the axis. The motor is configured to selectively apply torque to rotate the ramp member. The system additionally includes a roller element mounted with respect to the case and contacting the ramp surface. The ramp surface is configured such that, when the ramp member is rotated about the axis, the roller element exerts a reaction force on the ramp surface that urges the ramp member to move in a first axial direction and thereby transmit the reaction force to the clutch plates. A transmission assembly including the above described torque transmitting system is also disclosed.
摘要:
A torque transmitting device includes a plurality of clutch plates, a ramp member that is selectively rotatable about an axis and that defines a ramp surface, a worm gear that is operatively connected to the ramp member for rotation therewith about the axis, and a roller element contacting the ramp surface. The ramp surface is configured such that, when the ramp member is rotated about the axis, the roller element exerts a reaction force on the ramp surface that urges the ramp member to move in a first axial direction and thereby transmit the reaction force to the clutch plates.
摘要:
A powertrain for a vehicle includes an engine, a transmission with an input member driven by the engine, and an output member. An electric motor is operable to drive the input member. The transmission has an electrically-actuated one-way clutch with a neutral mode in which the clutch freewheels in both directions of rotation, and a locked mode in which the clutch is locked in one direction of rotation. The transmission also has a hydraulically-actuated dual-piston clutch with a spring that biases the dual-piston clutch to an engaged state. The one-way clutch is in the neutral mode and the spring biases the dual-piston clutch to the engaged state prior to a key start of the engine. The one-way clutch is actuated to the locked state following ignition of the engine after a key start, and remains in the locked state during an autostop of the engine.
摘要:
A pressure and flow control system for a torque converter clutch includes a pilot valve, a regulating valve, and a torque converter control valve. The pilot valve is configured to produce a pilot signal and includes a first valve, which is a MEMS microvalve. The regulating valve is in fluid communication with the pilot valve, and is configured to receive the pilot signal. The regulating valve is further configured to output a control signal. The torque converter control valve is configured to engage and disengage the torque converter clutch in response to the control signal.
摘要:
An automated manual transmission includes a hydraulic device, a pilot valve, and a regulating valve. The pilot valve is operably connected to the hydraulic device and configured to actuate. The pilot valve includes at least one micro-electro-mechanical systems (MEMS) based device. The regulating valve is operably connected to the pilot valve and the hydraulic device. The regulating valve is configured to direct fluid to the hydraulic device based on the actuation of the pilot valve.