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UTFES: A computer code to model engi...

Roberts, Charles Edward, Jr.

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UTFES: A computer code to model engine performance, knock, and hydrocarbon emissions.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	UTFES: A computer code to model engine performance, knock, and hydrocarbon emissions./
作者:	Roberts, Charles Edward, Jr.
面頁冊數:	213 p.
附註:	Source: Dissertation Abstracts International, Volume: 58-01, Section: B, page: 0392.
Contained By:	Dissertation Abstracts International58-01B.
標題:	Chemistry, Physical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9719475
ISBN:	0591280205

UTFES: A computer code to model engine performance, knock, and hydrocarbon emissions.
Roberts, Charles Edward, Jr.

UTFES: A computer code to model engine performance, knock, and hydrocarbon emissions. - 213 p.

Source: Dissertation Abstracts International, Volume: 58-01, Section: B, page: 0392.

Thesis (Ph.D.)--The University of Texas at Austin, 1996.

A full-cycle simulation of a spark ignition, four cycle engine is presented. UTFES is the first quasi dimensional engine model to simulate the coupled effects of combustion chamber geometry, pre-flame gas chemistry, post-flame gas chemistry, and ring pack dynamics. The equations governing basic engine physics are summarized, including explanations and validations of forcing function submodels for mass burning rate, wall heat transfer, blowby, valve flows, and combustion chamber geometry. Included in the model is the ability to follow detailed chemical kinetics within the fresh fuel/air mixture or the post-flame burned gas region. A new, detailed, low temperature iso-octane kinetics mechanism is presented which allows prediction of knocking conditions for engines run on this fuel. Predictions from the iso-octane knock mechanism were compared to experimental measurements made by Bill Leppard at the General Motors Research Laboratory. The ring pack region of the combustion chamber is modeled so that prediction of crevice flows and compositions can be made during all portions of the engine cycle. Simultaneous solutions of the base engine model and the ring pack model allow engine-out hydrocarbon emissions predictions. Predictions from the present model were compared to measurements made by Bill Kaiser at Ford Motor Company.

ISBN: 0591280205Subjects--Topical Terms:

560527
Chemistry, Physical.

UTFES: A computer code to model engine performance, knock, and hydrocarbon emissions.
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245 1 0 $a UTFES: A computer code to model engine performance, knock, and hydrocarbon emissions.
300 $a 213 p.
500 $a Source: Dissertation Abstracts International, Volume: 58-01, Section: B, page: 0392.
500 $a Supervisors: Ronald D. Matthews; Steven P. Nichols.
502 $a Thesis (Ph.D.)--The University of Texas at Austin, 1996.
520 $a A full-cycle simulation of a spark ignition, four cycle engine is presented. UTFES is the first quasi dimensional engine model to simulate the coupled effects of combustion chamber geometry, pre-flame gas chemistry, post-flame gas chemistry, and ring pack dynamics. The equations governing basic engine physics are summarized, including explanations and validations of forcing function submodels for mass burning rate, wall heat transfer, blowby, valve flows, and combustion chamber geometry. Included in the model is the ability to follow detailed chemical kinetics within the fresh fuel/air mixture or the post-flame burned gas region. A new, detailed, low temperature iso-octane kinetics mechanism is presented which allows prediction of knocking conditions for engines run on this fuel. Predictions from the iso-octane knock mechanism were compared to experimental measurements made by Bill Leppard at the General Motors Research Laboratory. The ring pack region of the combustion chamber is modeled so that prediction of crevice flows and compositions can be made during all portions of the engine cycle. Simultaneous solutions of the base engine model and the ring pack model allow engine-out hydrocarbon emissions predictions. Predictions from the present model were compared to measurements made by Bill Kaiser at Ford Motor Company.
520 $a The objective of this dissertation work was to produce the foundation for an engine design tool which can be used in association with other existing engine flow codes to produce "soft" prototypes of new engine designs, thus reducing current design times and costs associated with production and evaluation of multiple "hard" prototypes. The numerical model is designed in a modular format which allows custom tailoring of each run, so that maximum use of computational resources is made without loss of solution accuracy. Modular construction of the code also allows components and options to be easily added/subtracted so that the code can be made transportable to various machine architectures and sizes, ranging from desktop personal computers to mainframe super computers.
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790 1 0 $a Nichols, Steven P., $e advisor
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792 $a 1996
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