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Title: Engine valve actuation for combustion enhancement

Abstract

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-strokes 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.

Inventors:
 [1];  [1];  [1]
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  1. Madison, WI
Issue Date:
Research Org.:
Wisconsin Alumni Research Foundation (Madison, WI)
Sponsoring Org.:
USDOE
OSTI Identifier:
970557
Patent Number(s):
7337763
Application Number:
10/543,067
Assignee:
Wisconsin Alumni Research Foundation (Madison, WI)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01L - CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02B - INTERNAL-COMBUSTION PISTON ENGINES
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DOE Contract Number:  
FC04-02AL67612
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS

Citation Formats

Reitz, Rolf Deneys, Rutland, Christopher J, and Jhavar, Rahul. Engine valve actuation for combustion enhancement. United States: N. p., 2008. Web.
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Reitz, Rolf Deneys, Rutland, Christopher J, & Jhavar, Rahul. Engine valve actuation for combustion enhancement. United States.
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Reitz, Rolf Deneys, Rutland, Christopher J, and Jhavar, Rahul. Tue . "Engine valve actuation for combustion enhancement". United States. https://www.osti.gov/servlets/purl/970557.
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@article{osti_970557,
title = {Engine valve actuation for combustion enhancement},
author = {Reitz, Rolf Deneys and Rutland, Christopher J and Jhavar, Rahul},
abstractNote = {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-strokes 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {3}
}
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Works referenced in this record:

Ultra-Clean Combustion Technology Combining a Low-Temperature and Premixed Combustion Concept for Meeting Future Emission Standards
conference, March 2001

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