Internal-combustion engines – Combustion chamber means having fuel injection only – Combustible mixture stratification means
Reexamination Certificate
2006-02-22
2008-05-13
Solis, Erick (Department: 3747)
Internal-combustion engines
Combustion chamber means having fuel injection only
Combustible mixture stratification means
C123S299000, C123S305000
Reexamination Certificate
active
07370628
ABSTRACT:
The invention relates to a method for heating a catalytic converter which is arranged in the exhaust-gas path of an internal combustion engine with direct injection and spark ignition. In the method, a first fuel injection takes place in the intake stroke (E), whereas a second fuel injection begins in the combustion stroke after top dead center and prior to the spark ignition of the air/fuel mix. It is preferable for the second fuel injection to continue beyond the ignition instant until the pressure in the combustion chamber reaches the fuel injection pressure.
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Borrmann Dirk
Brinkmann Franz
Eves Brian
Peirce Gary
Brehob Diana D.
Ford Global Technologies LLC
Solis Erick
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