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

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

^*Corresponding author for this work

Research Organization for Next Generation Vehicles

Research output: Contribution to journal › Article › peer-review

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, NO_x 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 language	English
Pages (from-to)	113-124
Number of pages	12
Journal	International Journal of Environment and Pollution
Volume	1
Issue number	1-2
Publication status	Published - 1991

ASJC Scopus subject areas

Environmental Science(all)
Environmental Chemistry
Pollution

Cite this

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

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.",

author = "Yasuhiro Daisho and Takeshi Saito and Noriaki Ishibe and Mitsuhiro Tsukada and Masashi Yukawa",

year = "1991",

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T1 - Performance and exhaust emissions of a two-stroke spark-ignition engine with a direct-injection system

AU - Daisho, Yasuhiro

AU - Saito, Takeshi

AU - Ishibe, Noriaki

AU - Tsukada, Mitsuhiro

AU - Yukawa, Masashi

PY - 1991

Y1 - 1991

N2 - 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.

AB - 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.

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

Abstract

ASJC Scopus subject areas

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