The Effect of Secondary Fuel Injection on the Performance and Exhaust Emissions of An Open-Chamber Diesel Engine Mechanical Engrg., Univ. of Nigeria (Nsukka/Nigeria)

Format:

Conference/Event

Author/Creator:

Onyegegbu, Onyegegbu, author.

Contributor:

Bolt, Jay A.

Conference Name:

1978 SAE International Off-Highway and Powerplant Congress and Exposition (1978-09-11 : Milwaukee, Wisconsin, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1978

Summary:

Secondary injection in a diesel engine is defined as theintroduction of additional fuel into the combustion chamber afterthe end of the main injection. It is usually caused by residualpressure waves in the high-pressure pipe line connecting the pumpand injector. When these waves exceed the injector openingpressure, secondary injection occurs.Tests revealed that the U.S. Army TACOM single-cylinder engineused in this investigation, fitted with an American Bosch injectionsystem, had secondary injection within the normal engine operatingregion.The pump spill ports and delivery valve were redesigned toeliminate secondary injection, in accordance with previouslyreported work. Comparative tests of both the conventional andmodified injection systems were run on the same engine, and theeffects of secondary injection on engine power, economy, andexhaust emissions were determined. The results indicate thatsecondary injection increased smoke, unburned hydrocarbons, andspecific fuel consumption. Power was reduced

Notes:

Vendor supplied data

Publisher Number:

780786

Access Restriction:

Restricted for use by site license