Importance

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Abstract

An engine cranking system includes an engine, a cranking motor coupled to the engine, a battery coupled to the cranking motor and to a system ground and a capacitor. First and second electrical paths interconnect the capacitor with the cranking motor and the system ground. The system further includes first and second switches and a first relay included in one of the first or second electrical paths. The first relay is moveable between at least a closed-circuit position, wherein the first relay completes one of the first and second electrical paths, and an open-circuit position, wherein the first relay interrupts one of the first and second electrical paths. The first switch is coupled between the first relay and the capacitor. A second relay is coupled to the second switch and is moveable between at least a closed-circuit position, wherein the second relay completes a third electrical path activating the cranking motor, and an open-circuit position, wherein the second relay interrupts the third electrical path preventing cranking of the cranking motor.

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First Claim