Engine Valve Actuation For Combustion Enhancement

Patent · Tue May 18 00:00:00 EDT 2004

OSTI ID:879919

Reitz, Rolf Deneys ^[1]; Rutland, Christopher J ^[1]; Jhavar, Rahul ^[1]

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1. Madison, WI

A combustion chamber valve, such as an intake valve or an exhaust valve, is briefly opened during the compression and/or power strokes of a 4-stroke combustion cycle in an internal combustion engine (in particular, a diesel or CI engine). The brief opening may (1) enhance mixing withing the combustion chamber, allowing more complete oxidation of particulates to decrease engine emissions; and/or may (2) delay ignition until a more desirable time, potentially allowing a means of timing ignition in otherwise difficult-to-control conditions, e.g., in HCCI (Homogeneous Charge Compression Ignition) conditions.

• Research Organization: Univ. of Wisconsin, Madison, WI (United States)
• DOE Contract Number: FC04-02AL67612
• Assignee: Wisconsin Alumni Research Foundation (Madison, WI)
• Patent Number(s): US 6736106
• Application Number: 10/350053
• OSTI ID: 879919
• Country of Publication: United States
• Language: English