摘要:
When a vehicle speed V is out of a non-rotational synchronizing range, V≦Vref1 or Vref2≦V, in a neutral state of a transmission set in response to an operation of a gearshift lever to an N (neutral) position during operation of an engine, the engine and a motor MG1 are controlled to make a ring gear shaft rotate at a target rotation speed Nr*, which is expected in response to an operation of the gearshift lever to a D (drive) position or an R (reverse) position, and to enable self-sustained operation of the engine at the greater rotation speed between an idle speed Nidl and a minimum engine speed Nmin calculated from a minimum rotation speed Nm1min of the motor MG1. Such control effectively reduces a potential shock occurring in the case of the operation of the gearshift lever from the N position to the D position or the R position without causing negative overspeed of the motor MG1.
摘要:
A hybrid vehicle outputs creep torque by output torque of a second MG. A creep control unit controls creep torque when an accelerator pedal is not operated. The creep control unit controls a creep cut amount defined by a decrement of creep torque when the brake pedal is operated relative to creep torque when the brake pedal is not operated such that the creep cut amount when reverse running is selected is smaller than the creep cut amount when forward running is selected.
摘要:
In a power train in which a differential mechanism is coupled with a transmission mechanism, a transmission member is free with no engagement in a second shift portion when a P position or an N position is selected, and a ring gear thereby becomes free in a power split device. During an idle operation with such a shift position, a behavior of an engine rotation speed is retained in a stable manner in the power split device which functions as the differential mechanism through a power supply control (lock control) such that a rotor of a second MG coupled with the ring gear is locked by an electromagnetic force, and then, a learning control of an idle speed control is appropriately implemented.
摘要:
When a vehicle speed V is out of a non-rotational synchronizing range, V≦Vref1 or Vref2≦V, in a neutral state of a transmission set in response to an operation of a gearshift lever to an N (neutral) position during operation of an engine, the engine and a motor MG1 are controlled to make a ring gear shaft rotate at a target rotation speed Nr*, which is expected in response to an operation of the gearshift lever to a D (drive) position or an R (reverse) position, and to enable self-sustained operation of the engine at the greater rotation speed between an idle speed Nidl and a minimum engine speed Nmin calculated from a minimum rotation speed Nm1min of the motor MG1. Such control effectively reduces a potential shock occurring in the case of the operation of the gearshift lever from the N position to the D position or the R position without causing negative overspeed of the motor MG1.
摘要:
The control procedure of the invention sets a target rotation speed Ne* and a target torque Te* of an engine corresponding to a torque demand Td* required for driving the vehicle (steps S100 to S120). In response to an upshift request for a gear of a transmission, the control procedure sets a positive pre-upshift target rotation speed Nmtag to a target rotation speed Nm1* of a first motor (step S230). The control procedure changes the target rotation speed Ne* of the engine to a specific rotation speed corresponding to the pre-upshift target rotation speed Nmtag of the first motor (step S240) and subsequently implements an actual change of the gear in the transmission (step S310). This arrangement effectively restrains a battery from being overcharged with excess electric power.
摘要:
A hybrid vehicle outputs creep torque by output torque of a second MG. A creep control unit controls creep torque when an accelerator pedal is not operated. The creep control unit controls a creep cut amount defined by a decrement of creep torque when the brake pedal is operated relative to creep torque when the brake pedal is not operated such that the creep cut amount when reverse running is selected is smaller than the creep cut amount when forward running is selected.
摘要:
A control device for an electric pump, the electric pump pumping a cooling medium, the control device includes a controller configured to determine a presence of an abnormality in the electric pump when a temperature of the cooling medium is higher than a threshold value and the electric pump is locked. The threshold value being predetermined as a temperature that is higher than a freezing point of the cooling medium.
摘要:
A vehicle includes a braking force application device that executes braking force holding control which holds braking force irrespective of braking operation by a driver during a stop on a slope; and a control limiting device that limits execution of the braking force holding control when a shift position is set in a neutral position.
摘要:
In a power train in which a differential mechanism is coupled with a transmission mechanism, a transmission member is free with no engagement in a second shift portion when a P position or an N position is selected, and a ring gear thereby becomes free in a power split device. During an idle operation with such a shift position, a behavior of an engine rotation speed is retained in a stable manner in the power split device which functions as the differential mechanism through a power supply control (lock control) such that a rotor of a second MG coupled with the ring gear is locked by an electromagnetic force, and then, a learning control of an idle speed control is appropriately implemented.
摘要:
A vehicle includes a braking force application device that executes braking force holding control which holds braking force irrespective of braking operation by a driver during a stop on a slope; and a control limiting device that limits execution of the braking force holding control when a shift position is set in a neutral position.