摘要:
A vehicle control device for controlling a vehicle with a drive source automatic stop unit for automatically stopping a drive source when a predetermined automatic stop condition is satisfied and an electrical oil pump to be driven during an automatic stop of the drive source includes a drive prohibition time calculation unit configured to calculate a drive prohibition time of the electrical oil pump on the basis of a heat generation amount of the electrical oil pump, and a drive prohibition unit configured to prohibit the drive of the electrical oil pump until the drive prohibition time elapses from the end of the drive of the electrical oil pump.
摘要:
A vehicle control device for controlling a vehicle with a drive source automatic stop unit for automatically stopping a drive source when a predetermined automatic stop condition is satisfied and an electrical oil pump to be driven during an automatic stop of the drive source includes a drive prohibition time calculation unit configured to calculate a drive prohibition time of the electrical oil pump on the basis of a heat generation amount of the electrical oil pump, and a drive prohibition unit configured to prohibit the drive of the electrical oil pump until the drive prohibition time elapses from the end of the drive of the electrical oil pump.
摘要:
A hydraulic pressure supply system, which is capable of properly controlling a degree of engagement of a clutch, thereby making it possible to improve vehicle drivability. The hydraulic pressure supply system includes a first hydraulic pressure supply device that uses an internal combustion engine as a motive power source and supplies hydraulic pressure to the clutch, and a second hydraulic pressure supply device that supplies hydraulic pressure to the clutch by being driven by a motive power source other than the engine, detects a vehicle speed and a rotational difference parameter that represents a difference in rotational speed between an output shaft of the clutch and an input shaft of the clutch, and controls clutch supply hydraulic pressure which is hydraulic pressure supplied to the clutch, according to the detected vehicle speed and rotational difference parameter, when restart conditions of the engine are satisfied.
摘要:
A method of controlling a vehicle equipped with an internal-combustion engine with a “stop and start” system. The method provides, during vehicle running, for learning the “duty cycle” values associated with the odd gears and even gears, determining the “maximum duty cycle” value for the odd gears and “minimum duty cycle” value for the even gears, determining a duty-cycle band to which the “neutral gear” condition corresponds on the basis of the “minimum duty cycle” value for the even gears and “maximum duty cycle” value for the odd gears, and controlling the “stop and start” system on the basis of the duty-cycle band to which the “neutral gear” condition corresponds.
摘要:
A control device of a hybrid vehicle includes an engine and an electric motor, a clutch, and an automatic transmission. The motor is the only drive power source when the clutch is released. The control device is configured such that when a request for increasing drive torque while the motor is running is made, if start control of the engine and downshift control of the automatic transmission overlap, clutch engagement completion is a starting point to start a rotational change of an input rotation speed of the transmission toward a synchronous rotation speed after a shift, and a transmission torque capacity during the downshift control in the transmission until engagement completion of the clutch being set equal to or greater than an input torque of the transmission during the motor running and less than an input torque of the transmission at the time of engagement completion of the clutch.
摘要:
A start-up method for a hybrid powertrain in which hydraulic pressure is generated in a casual start-up by an electric oil pump motor where certain predetermined conditions are satisfied and the casual start-up is abandoned and hydraulic pressure is generated by an engine where the predetermined conditions are not satisfied. The casual start-up is also abandoned where a vehicle operator seeks propulsion shortly after start-up and before an oil pump is rotating within a predetermined threshold of an oil pump target RPM.
摘要:
A vehicle includes an engine, torque converter, transmission, accumulator, sensor, and controller. The engine is automatically restarted in response to a start signal during an engine auto-start event. The transmission has a calibrated line pressure and a plurality (n) of clutches. The (n) clutches are engaged to execute the engine auto-start event. The accumulator delivers fluid under pressure to the transmission in response to the start signal. The controller controls (n−1) of the plurality (n) of clutches to the calibrated line pressure in response to detecting the start signal. The controller also modifies clutch fill parameters which control a fill sequence of the remaining clutch, i.e., the designated control clutch, as a function of a deviation of the measured turbine speed from a theoretical no-slip turbine speed. A system includes the transmission, sensor, accumulator, and controller. A method for controlling the designated clutch is also disclosed.
摘要:
A powertrain has a continuously variable transmission including a shaft rotatable about an axis. The CVT further comprises a variator assembly that includes a pulley supported on the shaft. The pulley has a movable sheave with a ramp surface. The movable sheave is axially movable on the shaft. The variator assembly also includes an endless rotatable device frictionally engaged with the movable sheave. An actuator mechanism includes a wedge component supported on the shaft. The wedge component has a wedge surface that automatically engages the ramp surface when torque on the shaft is in a first direction. The wedge surface applies a wedge force on the ramp surface. The actuator mechanism further includes an actuator that is operatively connected to the movable sheave and is activatable to apply a force on the movable sheave.
摘要:
Systems and methods for starting an engine of a hybrid powertrain or driveline that includes an engine and a driveline disconnect clutch are described. In one example, a motor/generator rotates one side of an open driveline disconnect clutch that is coupled to a transmission, and then closes the open driveline disconnect clutch in response to motor/generator acceleration being less than a threshold.
摘要:
Provided is an automatic transmission with which a large impact is hardly applied to the component of the switching mechanism or the switching control circuit when the drive source is re-driven. When a drive source ENG is determined to be in the stopped state, if the position of a slider HC1 does not correspond to the position the control partECU instructed before the drive source ENG is determined to be in the stopped state, the control part ECU of the automatic transmission TM transmits a signal for switching a two-way clutch TW to a state corresponding to the state of a slider HC1.