Experimental methods for investigating the transient heating and emissions of an SI engine during the warm-up period

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Experimental methods for investigating the transient heating and emissions of an SI engine during the warm-up period

Experimental methods for investigating the transient heating and emissions of an SI engine during the warm-up period

Andrews, G.E. / Harris, J.R. / Ounzain, A.

The test procedures used to investigate the transient warm-up of an SI engine are described. The water, lubricating oil, inlet air, exhaust and metal casing temperatures are all logged into a microcomputer during a constant load and speed engine start up. A particular emphasis has been placed on monitoring the gas compositi on during the warm-up. A special feature of this system is the use of two UHC FID analysers operating at 180 Cel and 21 Cel. The difference in the two UHC readings is a measure of the high molecular weight condensible UHC or unburnt liquid fuel that is emitted. It is shown that this is quite significant during the initial period of warm-up. NOx emissions showed a strong increase during the warm-up and this indicated that the combustion process took an appreciable time to achieve its maximum flame temperature. The temperature results showed that the lubricating oil was the slowest component in the warm-up.

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Title :

Experimental methods for investigating the transient heating and emissions of an SI engine during the warm-up period

Additional title:

Experimentelle Methoden zur Untersuchung der Uebergangswaerme und Emissionen eines Motors mit elektronischer Zuendung waehrend der Aufwaermperiode

Contributors:

Andrews, G.E. (author) / Harris, J.R. (author) / Ounzain, A. (author)

Published in:

Experimental Methods in Engine Research and Development, Seminar ; 1988-2 , Mar ; 101-108

Publication date :

1988

Size :

8 Seiten, 10 Bilder, 1 Tabelle, 17 Quellen

Type of media :

Conference paper

Type of material :

Print

Language :

English

Keywords :

VERBRENNUNGSMOTOR , ZUENDANLAGE , EXPERIMENTELLE UNTERSUCHUNG , VERSUCHSMETHODE , UEBERGANGSVERHALTEN , AUFHEIZEN , TEMPERATURMESSUNG , PERSONAL COMPUTER , ABGASZUSAMMENSETZUNG , STICKOXID , SCHMIERMITTEL

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