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Method and system for starting an internal combustion engine having an AC starter and a DC starter

IP.com Disclosure Number: IPCOM000009749D
Publication Date: 2002-Sep-16

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Abstract

Three methods and a system for starting an internal combustion engine in a vehicle, which comprises a direct current motor and an alternating current motor for starting the internal combustion engine. One of the methods comprises the steps of: activating the direct current motor for starting the internal combustion engine; activating the alternating current motor when a certain speed of the internal combustion engine is reached, at which speed efficiency of the alternating current motor is substantially equal to the efficiency of the direct current motor; deactivating the direct current motor when the alternating current motor has started; and deactivating the alternating current motor when the internal combustion engine is able to run on its own.