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US 2020/0361441 A1Published application
Systems and methods for hybrid vehicle engine and motor torque coordination
AssigneeFord Global Technologies, LLC
InventorsKevin Ruybal, Jason Meyer, Rajit Johri, Jeffrey Allen Doering
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for coordinating engine and motor torque in a hybrid vehicle system. The systems and methods use an engine torque command to obtain a motor torque command, and adjust the engine torque command based on an estimate of a time delay between commanded and actual motor torque prior to the engine command being sent to an engine controller. In this way, crankshaft torque accuracy may be improved.
Claims20
A driveline operating method, comprising:
- controlling a motor and an engine via commanding a motor torque in response to an engine torque command and a requested motor torque;
- and
- commanding an engine torque in response to a requested engine torque and output of a motor torque model.
A powertrain operating method, comprising:
- in a first condition, commanding a motor torque for a motor based on a difference between a target crankshaft torque and an engine torque command;
- in a second condition, commanding the motor torque based on a prediction of a difference between the engine torque command and a maximum engine airflow torque capability;
- and
- in both the first condition and the second condition, commanding an engine torque for an engine based on a motor torque response model that outputs a motor delay torque estimation that is added to the engine torque command to compensate for a motor delay.
1 more element
A system for a hybrid vehicle, comprising:
- an engine;
- a motor/generator;
- and
- a controller with computer readable instructions stored on non-transitory memory that when executed cause the controller to:
- determine a motor torque command based on an engine torque command that is in turn based on a desired crankshaft torque;
- send the motor command to a model that outputs an expected delay between the motor torque command and an actual motor torque;
- adjust the engine torque command based on the expected delay;
- and
- subsequent to adjusting the engine torque command, control an engine actuator based on the adjusted engine torque command and command a motor torque based on the motor torque command.
6 more elements
Dependencies are inferred from the claim text.