Influence of Ca-, Mg- and Na-Based Engine Oil Additives on Abnormal Combustion in a Spark-Ignition Engine

Autor:	Kenta Miura, Kento Shimizu, Norikuni Hayakawa, Tomomi Miyasaka, Akira Iijima, Hideo Shoji, Toshimasa Utaka, Kazushi Tamura, Hideki Kamano
Rok vydání:	2015
Předmět:	Fuel Technology Automotive Engineering General Medicine
Zdroj:	SAE International Journal of Engines. 9:452-457
ISSN:	1946-3944 1946-3936
DOI:	10.4271/2015-32-0771
Popis:	One issue of downsized and supercharged engines is low-speed pre-ignition (LSPI) that occurs in the low-speed and high-load operating region. One proposed cause of LSPI is the influence of the engine oil and its additives. However, the effect of engine oil additives on pre-ignition and the mechanism involved are still not fully understood. This study investigated the influence of engine oil additives on abnormal combustion in a spark-ignition engine. A four-stroke air-cooled single-cylinder engine with a side valve arrangement was used in conducting combustion experiments. The research methods used were in-cylinder pressure analysis, in-cylinder visualization and absorption spectroscopic analysis. Engine oil additives were mixed individually at a fixed concentration into a primary reference fuel with an octane number of 50 and their effect on knocking was investigated.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5836f1c3b035d59fbc6f5d602b9d44c4 https://doi.org/10.4271/2015-32-0771 Zobrazit plný text záznamu