System and method for modeling and estimating engine cranking torque disturbances during starts and stops
AssigneeFord Global Technologies, LLC
InventorsJose VELAZQUEZ ALCANTAR, Rajit JOHRI, Ming Lang KUANG
Life of this patent
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Abstract
A method of controlling a hybrid vehicle includes commanding a first electric machine to provide a compensating torque. The compensating torque is based on a calculated cylinder pressure. The calculated cylinder pressure is calculated using a dynamic model. The model has an initializing input of engine crank position and real-time inputs of measured speed of the first electric machine and measured speed of the second electric machine.
Claims16
A method of controlling a hybrid vehicle, comprising:
- commanding a first electric machine to provide a compensating torque based on a cylinder pressure output from a dynamic model that has an initializing input of engine crank position and real-time inputs of measured speed of the first electric machine and measured speed of a second electric machine.
A hybrid vehicle comprising:
- an internal combustion engine;
- a first electric machine;
- a second electric machine;
- and
- a controller configured to control the first electric machine to provide a compensating torque based on a cylinder pressure output from a dynamic model that has an initializing input of engine crank position and real-time inputs of measured speed of the first electric machine and measured speed of the second electric machine.
A method of controlling a hybrid vehicle having first and second electric machines, comprising:
- in response to an engine start event or engine stop event, commanding the first electric machine to provide a compensating torque pulse based on a transmission input torque that is output from a dynamic engine model that uses measured speeds of the first and second electric machines as real-time inputs.
Dependencies are inferred from the claim text.