Internal-combustion engines – Combustion chamber means having fuel injection only – Using multiple injectors or injections
Reexamination Certificate
2007-09-10
2009-11-03
Cronin, Stephen K. (Department: 3747)
Internal-combustion engines
Combustion chamber means having fuel injection only
Using multiple injectors or injections
C123S568120, C701S103000
Reexamination Certificate
active
07610895
ABSTRACT:
In a method of operating an internal combustion engine of a motor vehicle during an engine warm-up phase, the engine having a cylinder including a piston defining in the cylinder a combustion chamber, wherein fuel is injected into the combustion chamber in a pilot injection, a main injection and, selectively, a post-injection, and during the heat-up phase of the engine, the center position of the combustion is retarded relative to a center position of the combustion in the normal engine operating mode in order to more rapidly heat the engine and the coolant in the engine cooling circuit for rapid heating of the passenger compartment of the motor vehicle.
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Klingebiel Matthias
Lütze Roland
Sass Heiko
Bach Klaus J.
Cronin Stephen K.
Daimler AG
Hoang Johnny H.
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