Side branch absorber for exhaust manifold of two-stroke internal combustion engine

Title: Side branch absorber for exhaust manifold of two-stroke internal combustion engine

Abstract

A method of improving scavenging operation of a two-stroke internal combustion engine. The exhaust pressure of the engine is analyzed to determine if there is a pulsation frequency. Acoustic modeling is used to design an absorber. An appropriately designed side branch absorber may be attached to the exhaust manifold.

Inventors:

Harris, Ralph E ^[1]; Broerman, III, Eugene L. ^[2]; Bourn, Gary D ^[3]

San Antonio, TX
(San Antonio, TX)
Laramie, WY

Issue Date:: 2011-01-11

Research Org.:: US Department of Energy (USDOE), Washington DC (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1013681

Patent Number(s):: 7866147

Application Number:: 11/541,008

Assignee:: Southwest Research Institute (San Antonio, TX)

Patent Classifications (CPCs):: Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01N - GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL

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Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
Y02T10/12 - Technologies for the improvement of indicated efficiency of a conventional ICE

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01N - GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL
F01N1/02 - by using resonance

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02B - INTERNAL-COMBUSTION PISTON ENGINES
F02B27/04 - in exhaust systems only, e.g. for sucking-off combustion gases
F02B2075/025 - {two}

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DOE Contract Number:: FC26-02NT41646

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING

Citation Formats


                    Harris, Ralph E, Broerman, III, Eugene L., and Bourn, Gary D. Side branch absorber for exhaust manifold of two-stroke internal combustion engine.  United States: N. p., 2011. 
        Web.

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                    Harris, Ralph E, Broerman, III, Eugene L., & Bourn, Gary D. Side branch absorber for exhaust manifold of two-stroke internal combustion engine.  United States.

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                    Harris, Ralph E, Broerman, III, Eugene L., and Bourn, Gary D. Tue .  
        "Side branch absorber for exhaust manifold of two-stroke internal combustion engine".  United States.  https://www.osti.gov/servlets/purl/1013681.

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@article{osti_1013681,

  title        = {Side branch absorber for exhaust manifold of two-stroke internal combustion engine},

  author       = {Harris, Ralph E and Broerman, III, Eugene L. and Bourn, Gary D},

  abstractNote = {A method of improving scavenging operation of a two-stroke internal combustion engine. The exhaust pressure of the engine is analyzed to determine if there is a pulsation frequency. Acoustic modeling is used to design an absorber. An appropriately designed side branch absorber may be attached to the exhaust manifold.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2011},

  month        = {1}

}

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Works referenced in this record:

Adaptive Helmholtz resonators and passive vibration absorbers for cylinder interior noise control
journal, December 2005

Estève, Simon J.; Johnson, Marty E.
Journal of Sound and Vibration, Vol. 288, Issue 4-5
https://doi.org/10.1016/j.jsv.2005.01.017

Adaptive-Passive Noise Control with Self-Tuning Helmholtz Resonators
journal, April 1997

de Bedout, J. M.; Franchek, M. A.; Bernhard, R. J.
Journal of Sound and Vibration, Vol. 202, Issue 1
https://doi.org/10.1006/jsvi.1996.0796

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Title: Side branch absorber for exhaust manifold of two-stroke internal combustion engine

Abstract

Citation Formats

Adaptive Helmholtz resonators and passive vibration absorbers for cylinder interior noise control journal, December 2005

Adaptive-Passive Noise Control with Self-Tuning Helmholtz Resonators journal, April 1997

Adaptive Helmholtz resonators and passive vibration absorbers for cylinder interior noise control
journal, December 2005

Adaptive-Passive Noise Control with Self-Tuning Helmholtz Resonators
journal, April 1997