Internal-combustion engines – Combustion chamber means having fuel injection only – Combustible mixture stratification means
Reexamination Certificate
2007-08-30
2008-09-02
Vo, Hieu T (Department: 3747)
Internal-combustion engines
Combustion chamber means having fuel injection only
Combustible mixture stratification means
Reexamination Certificate
active
07418940
ABSTRACT:
A system and method for operating an internal combustion engine include injecting fuel through a plurality of fuel jets of a fuel injector directly into a corresponding cylinder with at least a first plurality jets oriented to primarily support operation in a stratified mode and a second plurality of jets oriented to primarily support operation in a homogeneous mode. The first plurality of jets is oriented to spray fuel generally downward toward the piston bowl and the second plurality of jets is oriented to spray fuel generally across the cylinder toward the exhaust valves. The spray jets reduce or eliminate valve, liner, and piston wetting while providing good mixing in homogeneous mode and good combustion stability for light stratified charge during cold starts to achieve desired targets for feedgas emissions and combustion efficiency.
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Iyer Claudia Olivia
VanDerWege Brad Alan
Wooldridge Steven
Yi Jianwen James
Bir David S.
Bir Law, PLC
Ford Global Technologies LLC
Lippa Allan J.
Vo Hieu T
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