Method and device for adjusting opening time of a fuel injector for mounting a direct injection internal combustion engine
AssigneeSiemens VDO Automotive Corporation
InventorsFranz Dietl, Holger Rukwid, Frederic Galtier
Life of this patent
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Abstract
According to this method, a) a series of sparks is emitted into an engine cylinder (1), filled with an air/fuel mixture to be ignited, at predetermined successive instants, b) one of the sparks that initiates the ignition of the mixture is identified, c) the difference separating the instant of emission of the spark from a predetermined ignition instant able to ensure that the engine supplies a predetermined mechanical power is evaluated, and d) the instant of opening of the fuel injector (3) is corrected as a function of the difference, so as to initiate subsequent ignitions of the air/fuel mixture in the cylinder (1) at the predetermined instant.
Claims8
A method for setting the instant of opening of a fuel injector (3) in at least one (1) of the cylinders of a direct-injection internal combustion engine, notable in that:
- a) a series of sparks is emitted into said cylinder (1), filled with an air/fuel mixture to be ignited, at predetermined successive instants,
- b) the one of said sparks that initiates said ignition of said mixture is identified,
- c) the time difference separating the instant of emission of said spark from a predetermined ignition instant able to ensure that said engine supplies a predetermined mechanical power is evaluated, and
- d) the instant of opening of said fuel injector (3) is corrected as a function of said difference, so as to initiate subsequent ignitions of the air/fuel mixture in said cylinder (1) at said predetermined instant.
Dependencies are inferred from the claim text.