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US 10,273,895 B1Granted
Methods and system for detecting engine stall
AssigneeFord Global Technologies, LLC
InventorsRajit Johri, Fazal Urrahman Syed, Joseph A. Zamora, Paul Stephen Bryan, Minku Lee
Life of this patent
Estimating the term…
Abstract
Systems and methods for operating a hybrid powertrain that includes an engine and a motor/generator are described. The systems and methods provide a way of determining whether or not an engine has stalled while a vehicle may be propelled via the motor/generator. In one example, an engine stall may be indicated responsive to a first estimated engine torque and a second estimated engine torque.
Claims20
A vehicle operating method, comprising:
- indicating an engine stall in response to a request to determine a presence or absence of the engine stall when a first engine torque is less than a second engine torque, the first engine torque based on a torque converter impeller torque and a motor torque;
- and
- opening a driveline disconnect clutch in response to indicating the engine stall.
A vehicle operating method, comprising:
- indicating an engine stall in response to a request to determine a presence or absence of the engine stall when a first engine torque is less than a second engine torque, the first engine torque based on a torque converter impeller torque and a motor torque;
- and
- adjusting an engine actuator in response to the indicated engine stall.
A vehicle system, comprising:
- an electric machine;
- an engine;
- a driveline disconnect clutch mechanically coupled to the engine and the electric machine;
- and
- one or more controllers including executable instructions stored in non-transitory memory to indicate an engine stall in response to a first engine torque being less than a second engine torque, the first engine torque based on torque converter impeller torque and torque of the electric machine, the second engine torque based on engine operating conditions.
2 more elements
Dependencies are inferred from the claim text.