Variation of Knocking Characteristics with the Chamber Wall Temperature in a Spark-Ignition Engine

Seiichi Shiga, John B. Heywood, Kwang Min Chun

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

This study aims to clarify the importance of chamber wall temperature in the knocking characteristics of a spark-ignition engine. To vary the chamber wall temperature, two procedures were used, one is to change the coolant temperature and the other is to raise the exhaust valve surface temperature by substituting a ceramic surface layer for the original steel layer. Although the coolant temperature change had no influence on the flame propagation process, it fairly affected the knocking process, such as mean knock intensity and mean knock occurrence timing. This is caused by both the change of bulk mixture temperature of the end gas and the temperature uniformity within the end gas region. Cycle-by-cycle based knocking behaviour can also be influenced by the coolant temperature, which is considered to be based on the temperature uniformity in the whole chamber region. Exhaust valve surface temperature change did not affect any knocking characteristics. It suggests the importance of the wall temperature in the end gas region.

Original languageEnglish
Pages (from-to)3193-3198
Number of pages6
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume56
Issue number530
DOIs
Publication statusPublished - 1990 Jan 1

Fingerprint

spark ignition
wall temperature
Internal combustion engines
engines
chambers
coolants
Temperature
surface temperature
temperature
Coolants
cycles
flame propagation
gas temperature
gases
surface layers
Gases
time measurement
steels
occurrences
ceramics

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

@article{d9c69652d3784c699b4078465a844dde,
title = "Variation of Knocking Characteristics with the Chamber Wall Temperature in a Spark-Ignition Engine",
abstract = "This study aims to clarify the importance of chamber wall temperature in the knocking characteristics of a spark-ignition engine. To vary the chamber wall temperature, two procedures were used, one is to change the coolant temperature and the other is to raise the exhaust valve surface temperature by substituting a ceramic surface layer for the original steel layer. Although the coolant temperature change had no influence on the flame propagation process, it fairly affected the knocking process, such as mean knock intensity and mean knock occurrence timing. This is caused by both the change of bulk mixture temperature of the end gas and the temperature uniformity within the end gas region. Cycle-by-cycle based knocking behaviour can also be influenced by the coolant temperature, which is considered to be based on the temperature uniformity in the whole chamber region. Exhaust valve surface temperature change did not affect any knocking characteristics. It suggests the importance of the wall temperature in the end gas region.",
author = "Seiichi Shiga and Heywood, {John B.} and Chun, {Kwang Min}",
year = "1990",
month = "1",
day = "1",
doi = "10.1299/kikaib.56.3193",
language = "English",
volume = "56",
pages = "3193--3198",
journal = "Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B",
issn = "0387-5016",
publisher = "Japan Society of Mechanical Engineers",
number = "530",

}

TY - JOUR

T1 - Variation of Knocking Characteristics with the Chamber Wall Temperature in a Spark-Ignition Engine

AU - Shiga, Seiichi

AU - Heywood, John B.

AU - Chun, Kwang Min

PY - 1990/1/1

Y1 - 1990/1/1

N2 - This study aims to clarify the importance of chamber wall temperature in the knocking characteristics of a spark-ignition engine. To vary the chamber wall temperature, two procedures were used, one is to change the coolant temperature and the other is to raise the exhaust valve surface temperature by substituting a ceramic surface layer for the original steel layer. Although the coolant temperature change had no influence on the flame propagation process, it fairly affected the knocking process, such as mean knock intensity and mean knock occurrence timing. This is caused by both the change of bulk mixture temperature of the end gas and the temperature uniformity within the end gas region. Cycle-by-cycle based knocking behaviour can also be influenced by the coolant temperature, which is considered to be based on the temperature uniformity in the whole chamber region. Exhaust valve surface temperature change did not affect any knocking characteristics. It suggests the importance of the wall temperature in the end gas region.

AB - This study aims to clarify the importance of chamber wall temperature in the knocking characteristics of a spark-ignition engine. To vary the chamber wall temperature, two procedures were used, one is to change the coolant temperature and the other is to raise the exhaust valve surface temperature by substituting a ceramic surface layer for the original steel layer. Although the coolant temperature change had no influence on the flame propagation process, it fairly affected the knocking process, such as mean knock intensity and mean knock occurrence timing. This is caused by both the change of bulk mixture temperature of the end gas and the temperature uniformity within the end gas region. Cycle-by-cycle based knocking behaviour can also be influenced by the coolant temperature, which is considered to be based on the temperature uniformity in the whole chamber region. Exhaust valve surface temperature change did not affect any knocking characteristics. It suggests the importance of the wall temperature in the end gas region.

UR - http://www.scopus.com/inward/record.url?scp=84938339753&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84938339753&partnerID=8YFLogxK

U2 - 10.1299/kikaib.56.3193

DO - 10.1299/kikaib.56.3193

M3 - Article

AN - SCOPUS:84938339753

VL - 56

SP - 3193

EP - 3198

JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B

JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B

SN - 0387-5016

IS - 530

ER -