Process for automatically controlling the rail pressure...

Details Process for automatically controlling the rail pressure... Process for automatically controlling the rail pressure...

2008-06-18

2009-10-20

Solis, Erick (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C123S456000, C123S458000, C123S491000

Reexamination Certificate

active

07606656

ABSTRACT:
A process for automatically controlling the rail pressure (pCR) in an internal combustion engine with a common-rail system during the starting operation, the process including: calculating control deviation from a nominal rail pressure and an actual rail pressure; calculating, in a pressure controller, a correcting variable for actuating a suction throttle on the basis of the control deviation; and the suction throttle determining the required quantity of fuel. After the engine has been started, an adaptation process is activated upon detection of a negative control deviation of the rail pressure (pCR) followed by a positive control deviation, as a result of which the correcting variable is changed temporarily in such way as to increase the amount of fuel being delivered.

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