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An Unthrottled Gaseous Fuel Conversion of a 2-Stroke Diesel Engine
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English
Abstract
The feasibility of converting a conventional unthrottled 2-stroke diesel engine to gaseous fuel was investigated. The development work was performed in two phases. In phase 1 the conversion concepts were built and tested on a single-cylinder engine. In phase 2 one of these was put into effect in a 6-cyl (DDA 6V-71) engine. The design concept with the most promise includes a divided combustion chamber utilizing a gas inlet valve in each chamber and a spark plug ignition source located in the prechamber. The concept has the potential of reducing the exhaust emissions well below the levels now existing in commercial diesels without exhaust smoke and odor and with equivalent fuel consumption and horsepower, as demonstrated in the single-cylinder conversion. Further development work remains to be done to perfect the concept for the multi-cylinder engine.
Authors
Citation
Ritter, T. and Wood, C., "An Unthrottled Gaseous Fuel Conversion of a 2-Stroke Diesel Engine," SAE Technical Paper 750159, 1975, https://doi.org/10.4271/750159.Also In
References
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- Fleming R.D. Allsup J.R. “Emission Characteristics of Natural Gas as an Automotive Fuel.” SAE Paper 710833 Truck Power Plant Fuels & Lubricants St. Louis October 1971
- Jennings F.A. Studhalter Walter P. “The Importance of Gaseous Fueled Vehicles.” SAE Paper 730804 Off Highway Vehicle Meeting and Exposition Milwaukee September 1973
- Ritter T.E. “LNG Conversion of GM-71 Series Diesel Engine.” Southwest Research Institute October 1973 March 1974
- Witzky J.E. Hull Roy W. “The Development of the Pumpless Gas Engine Concept.” Paper 700073 Automotive Engineering Congress Detroit January 1970
- Federal Register 39 92 May 1974 16904 16905