Effective Ignition of Lean Methane/Hydrogen Mixture in a Rapid Compression Machine Univ of Windsor

Format:

Book

Conference/Event

Author/Creator:

Yu, Xiao, author.

Contributor:

Jin, Long

Reader, Graham

Wang, Meiping

Zheng, Ming

Conference Name:

WCX SAE World Congress Experience (2023-04-18 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2023

Summary:

The use of renewable natural gas and green hydrogen can significantly reduce the carbon footprint of engines. For future spark ignition engines, lean burn strategy and high compression ratio need to be adopted to further improve thermal efficiency, reducing energy consumption. The efficacy of the ignition system is essential to initiate self-sustainable flame under those extreme conditions. In this work, a rapid compression machine is employed to compress air-fuel mixture to engine-like boundary conditions before the spark event to experimentally investigate the ignition and combustion characteristics of the methane-air mixtures under extreme lean conditions. Hydrogen is also added to support the ignition process and enhance flame propagation speed. Lean methane-air mixtures with excess air ratio up to 2.8 are used, with 10 vol% hydrogen addition into the methane fuel. The ignition criteria under various ignition strategies are explored. Both in-cylinder pressure and high-speed direct imaging are collected to analyze combustion parameters, such as heat release rate and flame propagation speed. The impact of discharge current amplitude and duration on the lean burn limit of the fuel-air mixture is investigated

Notes:

Vendor supplied data

Publisher Number:

2023-01-0255

Access Restriction:

Restricted for use by site license