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Passive Pre-Chamber Spark Plug for Future Gasoline Combustion Systems with Direct Injection

Blankmeister, Matthias; Alp, Muhammed; Shimizu, Eriko


The challenge of using a pre-chamber spark plug for future gasoline combustion processes with direct injection is, on the one hand, to realize an ignitable mixture in the pre-chamber at low load and speed. On the other hand, at high speed and high load, keeping component temperatures have to be kept low in order to prevent irregular combustions (pre-ignition, glow ignition). With increasing requirements regarding fuel consumption and emissions, the challenges to modern combustion strategies are growing steadily. Measures to further increase the efficiency of the combustion engine are required for this purpose. There are different approaches to increase efficiency. These include increasing the compression ratio and diluting the air-fuel mixture. The latter can be generally classified into two broad categories: Dilution with air and dilution with residual gas. In both cases, it turns out that the highest possible dilution is to be preferred with respect to combustion efficiency. Increasing dilution, however, leads in both cases to a deterioration in flammability and a decrease in the flame velocity of combustion. In the resulting requirements for the ignition system, the passive pre-chamber spark plug is an interesting alternative to the conventional spark plug. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000088324
Veröffentlicht am 08.06.2019
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Kolbenmaschinen (IFKM)
Publikationstyp Proceedingsbeitrag
Publikationsjahr 2018
Sprache Englisch
Identifikator ISBN: 978-3-8169-3449-3
KITopen-ID: 1000088324
Erschienen in Ignition Systems for Gasoline Engines : 4th International Conference, December 6 - 7, 2018, Berlin, Germany. Ed.: M. Günther
Verlag expert-Verlag
Seiten 149-174
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