This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Electronic Direct Fuel Injection System Applied to an 1100cc Two-Stroke Personal Watercraft Engine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 23, 1998 by SAE International in United States
Annotation ability available
Direct injection has been considered the most effective approach to overcome the inherent short-circuiting of fuel in a two-stroke engine. A practical application of this technology on an 1100cc personal watercraft (PWC) engine is described. The experimental results show a drastic improvement in the engine emissions and fuel economy while maintaining good output performance and drive-ability of the PWC tested. The all-electronic, direct fuel injection engine has demonstrated a 76.3% reduction in hydrocarbon (HC) emissions and 43.03 g/kW-h HC plus oxides of nitrogen (NOx) emissions. This HC + NOx level meets the emission standards applicable to the 2006 model year set by the Environmental Protection Agency (EPA) for new gasoline spark-ignition marine engines.
Finally some considerations on extending the technology to include combustion control in the areas of both air and spark management, are recommended.
|Technical Paper||Exhaust Emissions Sensitivities with Direct Injection on a 50cc Scooter|
|Ground Vehicle Standard||Tamper Resistance for Adjustable Parameters on Diesel Fuel Injection Pumps|
|Technical Paper||DISI Engine Spark and Fuel Injection Timings. Effects, Compromise and Robustness|
CitationJohnson, D. and Wong, H., "Electronic Direct Fuel Injection System Applied to an 1100cc Two-Stroke Personal Watercraft Engine," SAE Technical Paper 980756, 1998, https://doi.org/10.4271/980756.
- Sato, T., Nakayama, M.: “Gasoline Direct Injection for a Loop-Scavenged Two-Stroke Cycle Engine”, SAE Paper 871690, 1987.
- Nuti, M.: “Direct Fuel Injection: An Opportunity for Two-Stroke SI Engines in Road Vehicle Use”, SAE Paper 860170, 1986.
- Plohberger, D., Landfahrer, K., Mikulic, L.: “Development of Fuel Injected Two-Stroke Gasoline Engine”, SAE Paper 880170, 1988.
- Kuentscher, V.: “Application of Charge Stratification, Lean Burn Combustion Systems and Anti-Knock Control Devices in Small Two-Stroke Cycle Gasoline Engines”, SAE Paper 860171, 1986.
- Heimberg, W.: “FICHT Pressure Surge Injection System”, SAE Paper 931502, 1993.
- Environmental Protection Agency: “Air Pollution Control; Gasoline Spark-Ignition Marine Engines; New Nonroad Compression-Ignition and Spark-Ignition Engines, Exemptions; Rule”, Federal Register 52087, October 4, 1996.
- Beck, N. J., Johnson, W.P., Barkhimer, R. L., Patterson, S.H.: “Electronic Fuel Injection for Two-Stroke Cycle Gasoline Engine”, SAE Paper 861242, 1986.
- Zhao, Fu-Quan, Yoo, Joon-Ho, Liu, Yi, Lai, Ming-Chia: “Spray Dynamics of High Pressure Fuel Injectors for DI Gasoline Engines”, SAE Paper 961925, 1996.
- Li, Shui-Chi, Gebert, Kresimir: “Spray Characterization of BKM Gasoline Fuel Injectors”, BKM Report No. 970036, 1997.
- Liu, Qihua, Gao, Zongying: “Two-Dimensional Calculation of the Gas Exchange Processes in Direct-Injection Two-Stroke Engines”, SAE Paper 961805, 1996.
- Johnson, Daren: “Lake Havasu Demonstration Summary”, BKM Report No. 960068, 1996.
- Johnson, Daren: “Status Report March 1997”, BKM Report No. 970023, 1997.