Start-assist circuit
First Claim
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1. A start-assist circuit for increasing the fuel injector voltage during starting of an engine having a fuel injector, a starter solenoid, and a battery and comprising:
- a first switch for providing an engine start signal;
a boost circuit for receiving said battery DC input voltage that insufficient to provide the necessary fuel injector voltage during engine start and providing an increased output DC voltage sufficient to effectively operate said fuel injectors during said starting of said engine; and
a control circuit forming part of said boost circuit and connected to said first switch for enabling said boost circuit to provide said increased voltage only when said engine start signal is received.
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Abstract
A start-assist circuit for increasing the fuel-injection voltage during the startup of an internal combustion engine having fuel injectors, a starter solenoid, and a battery is provided. The boost circuit receives the battery DC power and then boosts the battery voltage to provide an output having a level sufficient for a fuel injection solenoid during the start process.
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Citations
8 Claims
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1. A start-assist circuit for increasing the fuel injector voltage during starting of an engine having a fuel injector, a starter solenoid, and a battery and comprising:
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a first switch for providing an engine start signal; a boost circuit for receiving said battery DC input voltage that insufficient to provide the necessary fuel injector voltage during engine start and providing an increased output DC voltage sufficient to effectively operate said fuel injectors during said starting of said engine; and a control circuit forming part of said boost circuit and connected to said first switch for enabling said boost circuit to provide said increased voltage only when said engine start signal is received. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification