Methods for operating a spark-ignition internal combustion...

Details Methods for operating a spark-ignition internal combustion... Methods for operating a spark-ignition internal combustion...

2008-01-01

2008-01-01

Solis, Erick (Department: 3747)

Internal-combustion engines

Combustion chamber means having fuel injection only

Using multiple injectors or injections

Reexamination Certificate

active

07314036

ABSTRACT:
The invention relates to two methods for forming a fuel/air mixture of a directly injecting internal combustion engine with a spark ignition. In the first method, the fuel injection is configured in a homogeneous operating mode of the internal combustion engine in such a way that a first and a second part amount are introduced in the intake stroke, and a third part amount is introduced in the compression stroke, wherein the ignition of the fuel/air mixture which is formed takes place after the end of injection of the third part amount. In the second method, the fuel injection is configured in a stratified charge operating mode of the internal combustion engine in such a way that a first, a second and a third part amount are introduced into the combustion chamber during the compression stroke of the internal combustion engine, wherein the injection of the second part amount is ended at a crank angle which lies in a range between 15° CA before the ignition time to 4° CA after the ignition time.

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International Search Report dated Mar. 26, 2004.

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