Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2005-12-06
2010-12-28
Wolfe, Jr., Willis R (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C701S102000, C701S111000, C702S185000, C073S114430, C073S114510
Reexamination Certificate
active
07860638
ABSTRACT:
A method for determining fuel injection pressure or detecting a discrepancy in the fuel injection process of an internal combustion engine is provided. The engine includes a camshaft that actuates at least one fuel injector of the engine's fuel injection equipment. The method includes the step of determining a value T that is representative of the torque generated on the camshaft, such as the instantaneous torque or rotational speed of the camshaft, the torque being a resultant of accelerating and decelerating forces exerted on the camshaft by the at least one fuel injector during a phase of operation of the internal combustion engine. The method also includes the step of monitoring the value T for any increment, decrement or irregularity.
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Volvo Lastvagnar AB
Wolfe, Jr. Willis R
WRB-IP LLP
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