Use of integrated starter alternator to prevent engine stall
First Claim
1. A system for preventing stall of a vehicle engine, said system comprising:
- an integrated starter alternator operably connected with the engine, said integrated starter alternator capable of selectively operating as a starter motor for transmitting torque to the engine and as an alternator for producing electric energy;
at least one electric energy storage device in electrical communication with said integrated starter alternator;
at least one controller in electrical communication with said integrated starter alternator;
at least one sensor operably connected with the engine sending a signal indicative of engine performance to said at least one controller;
wherein said controller compares said signal to a predetermined condition indicative of engine stall and controls said at least one electric energy storage device and said integrated starter alternator to transmit a torque to the engine sufficient to prevent engine stall.
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0 Petitions
Accused Products
Abstract
In one aspect of the invention, a system for preventing stall of a vehicle engine is provided. The system includes an integrated starter alternator operably connected with the engine. The integrated starter alternator is capable of selectively operating as a starter motor for transmitting torque to the engine and as an alternator for producing electric energy. The system also includes at least one electric energy storage device in electrical communication with the integrated starter alternator. The system further includes at least one controller in electrical communication with the integrated starter alternator. The system includes at least one sensor operably connected with the engine sending a signal indicative of engine performance to the controller. The controller compares the signal to a predetermined condition indicative of engine stall and controls the electric energy storage device and the integrated starter alternator to transmit a torque to the engine sufficient to prevent engine stall.
23 Citations
8 Claims
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1. A system for preventing stall of a vehicle engine, said system comprising:
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an integrated starter alternator operably connected with the engine, said integrated starter alternator capable of selectively operating as a starter motor for transmitting torque to the engine and as an alternator for producing electric energy;
at least one electric energy storage device in electrical communication with said integrated starter alternator;
at least one controller in electrical communication with said integrated starter alternator;
at least one sensor operably connected with the engine sending a signal indicative of engine performance to said at least one controller;
wherein said controller compares said signal to a predetermined condition indicative of engine stall and controls said at least one electric energy storage device and said integrated starter alternator to transmit a torque to the engine sufficient to prevent engine stall. - View Dependent Claims (2, 3, 4)
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5. A method of preventing stall of a vehicle engine, said method comprising:
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measuring at least one engine parameter relating to engine performance;
detecting an engine condition known to lead to engine stall by comparing said at least one engine parameter to a predetermined value; and
powering an integrated starter alternator from an electric energy storage device to apply additional torque to said vehicle engine when said engine stall condition is detected. - View Dependent Claims (6, 7, 8)
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Specification