Simulation aided development of pre-chamber ignition system for a lean-burn gasoline direct injection motor-sport engine

Journal article


Palakunnummal, M, Sahu, P, Ellis, M and Nazha, PM (2020). Simulation aided development of pre-chamber ignition system for a lean-burn gasoline direct injection motor-sport engine. Journal of Engineering for Gas Turbines and Power, ASME. 142 (8).
AuthorsPalakunnummal, M, Sahu, P, Ellis, M and Nazha, PM
Abstract

Due to recent regulation changes to restricted fuel usage in
various motor-sport events, motor-sport engine manufacturers
have started to focus on improving the thermal efficiency
and often claim thermal efficiency figures well above equivalent road car engines. With limited fuel allowance, motorsport engines are operated with a lean air-fuel mixture to benefit from higher cycle efficiency, requiring an ignition system that is suitable for the lean mixture. Pre-chamber ignition is identified as a promising method to improve lean limit and has the potential to reduce end gas auto-ignition. This paper analyses the full-load performance of a motor-sport lean-burn GDI engine and a passive pre-chamber is developed with the aid of a CFD tool. The finalized pre-chamber design benefited in a significant reduction in burn duration, reduced cyclic variation, knock limit extension and higher performance.

KeywordsPre-chamber ignition; Turbulent jet ignition; GDI engine; Motor-sports engine
Year2020
JournalJournal of Engineering for Gas Turbines and Power, ASME
Journal citation142 (8)
PublisherAmerican Society of Mechanical Engineers
ISSN0742-4795
Digital Object Identifier (DOI)doi:10.1115/1.4047767
Publication dates
Print31 Jul 2020
Publication process dates
Accepted28 Apr 2020
Deposited28 Jul 2020
Accepted author manuscript
License
File Access Level
Open
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