Low-load operation extension of a homogeneous charge...

Details Low-load operation extension of a homogeneous charge... Low-load operation extension of a homogeneous charge...

2007-11-02

2010-11-16

Vo, Hieu T (Department: 3747)

Internal-combustion engines

Igniters

C123S299000

Reexamination Certificate

active

07832370

ABSTRACT:
A method for extending the low-load operation of a homogeneous charge compression ignition engine includes employing a valve actuation device creating a negative valve overlap, thereby trapping and recompressing combusted gases within a combustion chamber, the device effecting increasingly longer negative valve overlap as engine load decreases, injecting during the negative valve overlap a fraction of fuel into the recompressed combusted gases, and igniting the fuel with a heat source during the negative valve overlap.

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