Patent ID: 7702449
Filing Date: 2010-04-20
Classification: F02D,F02M

Abstract:
1. An internal combustion engine comprising: a control system; a fuel system that draws liquid fuel from a fuel tank to charge fuel injectors that when actuated by the control system force fuel charges into engine combustion chambers using hydraulic fluid at injection control pressure (ICP); and the control system comprising a processor for executing an ICP control strategy, wherein the strategy comprises processing a first fuel value indicative of the quantity of fuel presently in the tank and a second fuel value representing a quantity of fuel in the tank at which a maximum ICP limit set by the ICP control strategy should be changed, and when the result of the processing discloses that the second fuel value is less than the first fuel value, execution of the ICP control strategy reduces the maximum ICP limit from a greater value to a lesser value.