Device and method for regulating a pressure in accumulator injec

Internal-combustion engines – Charge forming device – Fuel injection system

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123458, F02M 3304

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active

06119655&

ABSTRACT:
A device for regulating a pressure in a high pressure accumulator of a fuel injection system includes a pressure adjusting element which has a shut-off element and an electromagnetic drive actuating the shut-off element. A first regulating device is connected to the pressure adjusting element and compares a pressure value obtained in the high pressure accumulator with a given setpoint pressure value. A drive signal with a setpoint current value for the electromagnetic drive is determined as a function of the comparison. A second regulating device is connected downstream of the first regulating device for comparing a current value of a current flowing through the electromagnetic drive with the setpoint current value and readjusting the current value in response to a deviation between the current value and the setpoint current value. A method for regulating a pressure in a high pressure accumulator is also provided.

REFERENCES:
patent: 4422420 (1983-12-01), Cromas et al.
patent: 5085193 (1992-02-01), Morikawa
patent: 5727515 (1998-03-01), Biester
patent: 5727525 (1998-03-01), Tsuzuki
patent: 5738071 (1998-04-01), Smith, Jr. et al.
Published International Application No. 96/03577 (Antonioli et al.), dated Feb. 8, 1996.

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