Method for controlling the amount of fuel injected in a direct injection internal combustion engine
AssigneeSiemens VDO Automotive Corporation
InventorAlain Aubourg
Life of this patent
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Abstract
The invention concerns a method which consists in using an injector supplied with fuel whereof the pressure (Pcarb) is an increasing function of the amount of fuel (Q) to be injected, the opening of the injector being electromagnetically triggered by energizing the electric coil integral with the injector with a current peak of predetermined duration (T1). The invention is characterized in that the duration (T1) of the current peak in an increasing function of the pressure (Pcarb) of the fuel. Thus, the dynamics of the injector is increased.
Claims6
A method for controlling the amount of fuel (Q) injected into a direct-injection internal combustion engine by an injector supplied with fuel under pressure (Pfuel), the opening of said injector being triggered electromagnetically by supplying an electric coil that forms part of the injector with a current spike of predetermined duration (T1), this method being characterized in that said duration (T1) of said current spike is an increasing function of said fuel pressure (Pfuel).
Dependencies are inferred from the claim text.