This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Emissions from a Direct-Cylinder Water-Injected Spark-Ignition Engine
Annotation ability available
Sector:
Language:
English
Abstract
The gas-phase exhaust emissions which resulted when a variably timed, variable mass of water was injected directly into the cylinder of a spark-ignition engine are reported. The experimental setup and the procedure used in the investigation are also described. Conclusions are drawn with regard to the optimum injection timing and amount of water introduced. Generally, direct-cylinder injection of water reduces NO, increases unburned HC, and does not effect CO and CO2. For a fixed-ignition timing, power also deteriorates. Another finding of this investigation is that direct-cylinder injection does result in NO reductions of better than 85% while using about one-third the mass of water required by manifold injection to effect a similar reduction.
Recommended Content
Authors
Citation
Lestz, S., Meyer, W., and Colony, C., "Emissions from a Direct-Cylinder Water-Injected Spark-Ignition Engine," SAE Technical Paper 720113, 1972, https://doi.org/10.4271/720113.Also In
References
- Gibson H. J. “Air Cleanliness a New Factor in Engine-Fuel Relationships.” Paper A9 Munchen June 1966
- Huls T. A. Myers P. S. Uyehara O. A. “Spark-Ignition Engine Operation and Design for Minimum Exhaust Emission.” SAE Transactions 75 1967 paper 660405
- Barton R. K. Lestz S. S. Meyer W. E. “An Empirical Model for Correlating Cycle-by-Cycle Cylinder Gas Motion and Combustion Variations of a Spark Ignition Engine.” Paper 710163 SAE Automotive Engineering Congress Detroit January 1971
- Tanuma T. Sasaki K. Kaneko T. Kawasaki H. “Ignition, Combustion, and Exhaust Emissions of Lean Mixtures in Automotive Spark Ignition Engines.” Paper 710159 SAE Automotive Engineering Congress Detroit January 1971
- Quader Ather A. “Why Intake Charge Dilution Decreases Nitric Oxide Emission from Spark Ignition Engines.” Paper 710009 SAE Automotive Engineering Congress Detroit January 1971
- Nicholls J. E. El-Messiri I. A. Newhall H. K. “Inlet Manifold Water Injection for Control of Nitrogen Oxides - Theory and Experiment.” SAE Transactions 78 1969 paper 690018
- Newhall H. K. El-Messiri I. A. “A Combustion Chamber Designed for Minimum Engine Exhaust Emissions.” SAE Transactions 79 1970 paper 700491
- Kenemuth D. K. Lestz S. S. “Charge Conditioning Effects on Cycle-by-Cycle Pressure Development Variations of an SI Engine.” Automotive Safety Research Program, Report No. 36 The Pennsylvania State University March 1970
- Colony C. M. “The Effect of an Internal Coolant on NO x Production in an SI Engine.” The Pennsylvania State University June 1971
- Obert E. F. “Internal Combustion Engines.” 3rd Scranton, Pa. International Textbook Co. 1968 356