Performance and exhaust emissions of a two-stroke spark-ignition engine with a direct-injection system

Yasuhiro Daisho, Takeshi Saito, Noriaki Ishibe, Mitsuhiro Tsukada, Masashi Yukawa

Research output: Contribution to journalArticle

Abstract

A direct fuel-injection system has been adapted to a small two-stroke spark-ignition engine to prevent the charge from flowing through the cylinder during the scavenging process. The injection system consists of a jerk-type pump and a single-hole nozzle which supplies gasoline to the cylinder. Engine tests were carried out for comparison with the carbureteur version of the same engine. The results show that the direct-injection version can achieve greatly improved thermal efficiency and lower HC and CO emissions without intake throttling. In addition, NOx can be reduced to a much lower level than that of the ordinary four-stroke engine. Heat release analysis and high-speed photography indicate that stratified charge combustion takes place in the direct-injection engine.

Original languageEnglish
Pages (from-to)113-124
Number of pages12
JournalInternational Journal of Environment and Pollution
Volume1
Issue number1-2
Publication statusPublished - 1991

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exhaust emission
Direct injection
Internal combustion engines
engine
Engines
Engine cylinders
High speed photography
Scavenging
Fuel injection
Carbon Monoxide
photography
Gasoline
Nozzles
pump
combustion
Pumps
Hot Temperature

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry
  • Pollution

Cite this

Performance and exhaust emissions of a two-stroke spark-ignition engine with a direct-injection system. / Daisho, Yasuhiro; Saito, Takeshi; Ishibe, Noriaki; Tsukada, Mitsuhiro; Yukawa, Masashi.

In: International Journal of Environment and Pollution, Vol. 1, No. 1-2, 1991, p. 113-124.

Research output: Contribution to journalArticle

Daisho, Yasuhiro ; Saito, Takeshi ; Ishibe, Noriaki ; Tsukada, Mitsuhiro ; Yukawa, Masashi. / Performance and exhaust emissions of a two-stroke spark-ignition engine with a direct-injection system. In: International Journal of Environment and Pollution. 1991 ; Vol. 1, No. 1-2. pp. 113-124.
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