Clutch engagement control apparatus for hybrid vehicle
AssigneeNissan Motor Co., Ltd.
InventorsJun Motosugi, Ken Ito, Kazutaka Adachi, Hiroyuki Ashizawa
Life of this patent
Estimating the term…
Abstract
A clutch control apparatus is provided for a hybrid vehicle having at least two different power sources and a clutch disposed between the power sources and the drive wheels arranged to vary a transmission torque capacity. A separate clutch input and output speed sensing device senses the actual clutch input and output speeds respectively. A controller is configured to calculate a target vehicle driving torque according to a driver's operation and the vehicle running condition.
Claims21
A clutch engagement control apparatus for a hybrid vehicle, comprising:
- power sources;
- a clutch disposed between power sources and drive wheels and arranged to vary a transmission torque capacity;
- a clutch input speed sensing device to sense an actual clutch input speed of an input side of the clutch;
- a clutch output speed sensing device to sense an actual clutch output speed of an output side of the clutch;
- and
- a controller configured to:
- calculate a target vehicle driving torque in accordance with a driver's operation and a vehicle running condition;
- calculate a target clutch slip speed of the clutch in accordance with a vehicle running condition;
- calculate a target clutch input speed of the input side of the clutch and a target clutch output speed of the output side of the clutch in accordance with the target vehicle driving torque and the target clutch slip speed;
- calculate a target power source output torque of the power sources to reduce a clutch input speed deviation between the target clutch input speed and the actual clutch input speed;
- calculate a target clutch transmission torque capacity of the clutch to reduce a clutch output speed deviation between the target clutch output speed and the actual clutch output speed;
- control the power sources so as to control an actual power source output torque of the power sources toward the target power source output torque;
- and
- control the clutch so as to control an actual clutch transmission torque capacity of the clutch toward the target clutch transmission torque capacity.
A clutch engagement control apparatus for a hybrid vehicle including power sources, a drive wheel and a clutch disposed between power sources and a drive wheel, the clutch arranged to vary a transmission torque capacity, the apparatus comprising:
- means for calculating a target vehicle driving torque in accordance with a driver's operation and a vehicle running condition;
- means for calculating a target clutch slip speed of the clutch in accordance with a vehicle running condition;
- means for calculating a target clutch input speed of an input side of the clutch and a target clutch output speed of an output side of the clutch in accordance with the target vehicle driving torque and the target clutch slip speed;
- means for calculating a target power source output torque of the power sources to reduce a clutch input speed deviation between the target clutch input speed and an actual clutch input speed of the clutch;
- means for calculating a target clutch transmission torque capacity of the clutch to reduce a clutch output speed deviation between the target clutch output speed and an actual clutch output speed of the clutch;
- means for controlling the power sources so as to control an actual power source output torque of the power sources toward the target power source output torque;
- and
- means for controlling the clutch so as to control an actual clutch transmission torque capacity of the clutch toward the target clutch transmission torque capacity.
A clutch engagement control method for a hybrid vehicle including power sources, a drive wheel and a clutch disposed between power sources and a drive wheel, the clutch arranged to vary a transmission torque capacity, the method comprising:
- calculating a target vehicle driving torque in accordance with a driver's operation and a vehicle running condition;
- calculating a target clutch slip speed of the clutch in accordance with a vehicle running condition;
- calculating a target clutch input speed of an input side of the clutch and a target clutch output speed of an output side of the clutch in accordance with the target vehicle driving torque and the target clutch slip speed;
- calculating a target power source output torque of the power sources to reduce a clutch input speed deviation between the target clutch input speed and an actual clutch input speed of the input side of the clutch;
- calculating a target clutch transmission torque capacity of the clutch to reduce a clutch output speed deviation between the target clutch output speed and an actual clutch output speed of the output side of the clutch;
- controlling the power sources so as to control an actual power source output torque of the power sources toward the target power source output torque;
- and
- controlling the clutch so as to control an actual clutch transmission torque capacity of the clutch toward the target clutch transmission torque capacity.
Dependencies are inferred from the claim text.