CIRCUIT ARRANGEMENT FOR CONTROLLING AN INJECTION VALVE
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Accused Products
Abstract
A circuit arrangement controls at least one injection valve, in particular a solenoid injection valve, for an internal combustion engine. The circuit includes a supply potential connection, a reference potential connection; one or more solenoids; a controllable voltage boosting circuit for generating from the first voltage a second voltage that is higher than the first voltage. The voltage boosting circuit is connected at a first input to the supply potential connection and at a first output to the solenoids by means of a respective first controllable semiconductor switching element. A control circuit is connected at least to a respective first semiconductor switching element and the voltage boosting circuit. The control circuit applies the first or the second voltage to the first coil connection of exactly one solenoid depending on an actuation state of one of the injection valves.
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Citations
34 Claims
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1-15. -15. (canceled)
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16. A circuit arrangement for actuating at least one injection valve of an internal combustion engine, the circuit arrangement comprising:
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a supply potential connection for carrying a first voltage; a reference-ground potential connection; one or more cylinder coils having a first coil connection, wherein a voltage is applied to said first coil connection of said cylinder coil for operating an associated injection valve; a controllable voltage boosting circuit configured to produce from the first voltage a second voltage that is higher than the first voltage, said voltage boosting circuit having a first input connected to said supply potential connection and a first output connected to said cylinder coils via a respective first controllable semiconductor switching element; and an actuation circuit connected, for the purpose of actuation, at least to one of the respective said first semiconductor switching element and to said voltage boosting circuit, said actuation circuit being designed to take an operated state of one of the injection valves as a basis for applying the first or the second voltage to said first coil connection of precisely one said cylinder coil. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification