Internal-combustion engines – Combustion chamber means having fuel injection only – Using multiple injectors or injections
Reexamination Certificate
2006-01-10
2006-01-10
Mohanty, Bibhu (Department: 3747)
Internal-combustion engines
Combustion chamber means having fuel injection only
Using multiple injectors or injections
C123S446000
Reexamination Certificate
active
06983731
ABSTRACT:
A method for operating a fuel injection system for an internal combustion engine is provided, in which monitoring is performed as to whether an overlapping occurs between a time interval in which one piezoelectric element for injecting fuel into a cylinder is to be charged or discharged, and a time interval in which a different piezoelectric element for injecting fuel into a different cylinder is to be charged or discharged. The monitoring is performed as to whether, in the context of a lower-priority injection, the charging or discharging occurs within a predefined time interval around the point in time of a charging or discharging of a higher-priority injection, the spacings of time-related charging and/or discharging edges (edge overlaps) being determined during operation of the fuel injection system, and the magnitude of the shift and/or shortening of the lower-priority injections with respect to the higher-priority injections being determined therefrom.
REFERENCES:
patent: 6672278 (2004-01-01), Zimmermann et al.
patent: 100 33 343 (2002-01-01), None
Patent Abstracts of Japan, vol. 1999, No. 11, Sep. 30, 1999 & (JP 11 159414 A (Hitachi Ltd.), Jun. 15, 1999.
Rohatschek Andreas-Juergen
Schulz Udo
Kenyon & Kenyon
Mohanty Bibhu
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