Effects of Multi-stage Ignition Strategies on Combustion Characteristics in a Direct Injection Spark Ignition Engine under Simulated EGR Conditions

Kanghyun Lee; Hoseung Yi; Youngseok Song; Sungwook Park

doi:10.15231/jksc.2025.30.3.034

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2025 Vol.30, Issue 3 Preview Page Next Page

Research Article

Effects of Multi-stage Ignition Strategies on Combustion Characteristics in a Direct Injection Spark Ignition Engine under Simulated EGR Conditions 모사 EGR 환경에서 다단점화 전략이 직접 분사식 불꽃 점화 엔진의 연소 성능에 미치는 영향

30 September 2025. pp. 34-43

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Abstract

This study compared the combustion characteristics of a commercial ignition coil and two multi-stage ignition coils in a single-cylinder DISI engine. The multi-stage ignition coils each comprise two coils and operate in simultaneous (S-mode) and continuous (C-mode) modes; simulated EGR was applied to create a combustion-unstable environment. At 30% EGR, the S-mode showed lower combustion pressure, longer combustion duration, and reduced combustion stability than the commercial ignition coil, resulting in higher indicated specific fuel consumption. The C-mode exhibited performance comparable to the commercial ignition coil at 30% EGR. At 35% EGR, the C-mode maintained higher combustion pressure and shorter ignition delay, yielding lower IMEP COV and an ISFC reduction exceeding 10% relative the commercial ignition coil.

Keywords

Direct injection spark ignition engine

Simulated EGR

Multi-stage ignition coil

Combustion stability

Indicated specific fuel consumption

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Information

Publisher :The Korean Society of Combustion
Publisher(Ko) :한국연소학회
Journal Title :Journal of the Korean Society of Combustion
Journal Title(Ko) :한국연소학회지
Volume : 30
No :3
Pages :34-43
Received Date : 2025-08-18
Revised Date : 2025-09-12
Accepted Date : 2025-09-15
DOI :https://doi.org/10.15231/jksc.2025.30.3.034

Journal of the Korean Society of Combustion ISSN:1226-0959(Print) 2466-2089(Online) 한국연소학회지

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