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US 10,821,966 B2Granted
Hybrid vehicle control system
AssigneeFord Global Technologies, LLC
InventorsJason Meyer, Rajit Johri, Mark Steven Yamazaki
Life of this patent
Estimating the term…
Abstract
A vehicle includes an engine, a motor, and a controller. The engine and motor are each configured to deliver torque to a torque converter impeller. The controller is programmed to, responsive to a demanded impeller torque exceeding an upper motor torque threshold while the motor alone is delivering torque to the impeller, increase motor torque to a value that is less than the threshold and that depends on a torque converter bypass clutch torque capacity and a torque converter turbine speed.
Claims19
A vehicle comprising:
- an engine and a motor each configured to deliver torque to a torque converter impeller;
- and
- a controller programmed to, responsive to a demanded impeller torque exceeding an upper motor torque threshold while the motor alone is delivering torque to the impeller, increase motor torque to a value that is less than the threshold, wherein the value is based on a torque converter bypass clutch torque capacity and a torque converter turbine speed.
A vehicle comprising:
- an engine selectively coupled to a torque converter impeller via a disconnect clutch;
- a motor fixedly coupled to the impeller;
- a torque converter bypass clutch;
- and
- a controller programmed to, responsive to a demanded impeller torque exceeding a maximum sustainable motor torque while the disconnect clutch is open, increase motor torque to a value that is less than the maximum sustainable motor torque, wherein the value is based on an estimated impeller speed profile, and wherein the estimated impeller speed profile is based on a torque capacity of the bypass clutch, a torque converter turbine speed, and a demanded torque converter turbine torque.
2 more elements
A vehicle comprising:
- an engine coupled to a motor via a clutch;
- a torque converter having an impeller coupled to the motor;
- a torque converter bypass clutch;
- and
- a controller programmed to, responsive to an impeller torque command exceeding a threshold while the clutch is open and the engine is shutdown, increase motor torque to a value that is less than the threshold, wherein the value is based on an estimated impeller speed profile, and wherein the estimated impeller speed profile is based on a torque capacity of the bypass clutch, a torque converter turbine speed, and a demanded torque converter turbine torque.
2 more elements
Dependencies are inferred from the claim text.