Method and device for controlling an injection valve of an...

Details Method and device for controlling an injection valve of an... Method and device for controlling an injection valve of an...

2011-03-29

2011-03-29

Kwon, John T (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel injection system

C123S456000, C123S457000

Reexamination Certificate

active

07913666

ABSTRACT:
In order to reduce the quantity deviation of a fuel injection valve, it is proposed according to the various embodiments that a test injection be carried out during an overrun cut-off phase of a motor vehicle in operation. In the process, the fuel rail (2) is closed on the inlet side and the selected injection valve (1) is activated. A quantity difference between the predetermined setpoint and the actual value can be determined by measuring a pressure difference in the fuel rail (2) before and after the test injection. This results in a correction factor with which the activation for the selected injection valve (1) is corrected for subsequent injections.

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