Patent ID: 6962135

Claim:
A system for preventing stall of a vehicle engine, said system comprising: an integrated starter alternator operably connected with said vehicle engine, said integrated starter alternator capable of selectively operating as a motor for transmitting torque to said vehicle engine and as an alternator for producing electric energy; a first electric energy storage device in electrical communication with said integrated starter alternator; a second electric energy storage device in electrical communication with said integrated starter alternator and said first electric energy storage device, wherein said second electric energy storage device is operative to charge said first electric energy storage device when said integrated starter alternator is operating as an alternator for producing electric energy; at least one controller in electrical communication with said integrated starter alternator, and at least one sensor operably connected with said vehicle 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 first electric energy storage device and said integrated starter alternator to transmit a torque to said vehicle engine sufficient to prevent engine stall.