Title: Influences of a novel pre-chamber design on the performance and emission characteristics of a spark ignition engine fuelled with natural gas

Authors: Mehmet Çakır; Guven Gonca

Addresses: Department of Marine Engineering Operations, Yildiz Technical University, 34349, Istanbul, Turkey ' Department of Naval Architecture and Marine Engineering, Yildiz Technical University, 34349, Istanbul, Turkey

Abstract: The effects of a novel pre-combustion chamber design on engine efficiency and emission characteristics were investigated at full and partial loads in the presented experimental and computational study. The original engine was converted to a pre-combustion chambered engine by modifying the cylinder head. Also, a combustion simulation model was developed for the spark ignition engine with pre-combustion chamber and fuelled with natural gas. The experimental performance data of the engine with pre-combustion chamber was compared to theoretical data obtained by using a combustion model. Maximum difference between the experimental results and model data was found lower than 10%. Moreover, it has been observed that the pre-chamber engine is more efficient at low loads and speeds.

Keywords: lean burn engine; natural gas; pre-chamber design; two-zone combustion mode.

DOI: 10.1504/IJGW.2023.133209

International Journal of Global Warming, 2023 Vol.31 No.1, pp.68 - 81

Received: 07 Nov 2022
Accepted: 15 Jan 2023

Published online: 01 Sep 2023 *

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