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An Experimental Comparison Between Air-Assisted Injection System and High Pressure Injection System at 2-Stroke Engine
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English
Abstract
This study presents engine test results of HMC's piston-ported 2-stroke gasoline engine. This single cylinder engine of 400cc displacement has featured in direct injection(DI) of fuel and external blower scavenging of air.
Two different concepts of DI system were adopted, one is high pressure fuel injection(HPFI) system for solid fuel only and the other is low pressure air-assisted fuel injection(AAFI) system.
Two kinds of engines with different scavenging intake port shapes and areas were tested to find the effect of scavenging port type on engine performance. Also tested were trends of BSFC, BSHC and BSCO versus fuel injection timing and engine speed with HPFI and AAFI, respectively. Power and boost pressure at full load and BSFC and BSHC at part load were tested.
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Authors
Citation
Yoon, K., Kim, W., Shim, H., and Moon, G., "An Experimental Comparison Between Air-Assisted Injection System and High Pressure Injection System at 2-Stroke Engine," SAE Technical Paper 950270, 1995, https://doi.org/10.4271/950270.Also In
References
- Ukawa Haruo Nakano Masamitsu Sato Kazuo “A Two-Stroke Cycle with Poppet Valves in the Cylinder Head-Part III: An Application og Gaseous Fuel Direct Injection Systems “SAE Paper No. 930983 1993
- Monnier Gaetan Duret Pierre “IAPAC Compressed Air Assisted Fuel Injection for High Efficiency Low Emissions Marine Outboard Two- Stroke Engines “SAE Paper No. 911849 1991
- Schlunke K. “The Orbital Combustion Process Engine,” 10th Vienna Motorsymposium 1989 VDI 63 68
- Conlon Paul Fleck Robert “An Experimental Investigation to Optimise the Performance of a Supercharged Two-Stroke Engine “SAE Paper No. 930982 1993
- Sato Tadanori Nakayama Mitsushige “Gasoline Direct Injection for a Loop-Scavenged Two-Stroke Cycle Engine “SAE Paper No. 871690 1987