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Compression Temperatures in a Cold Cranking Engine
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English
Abstract
The UPS292sc, a late injection DISC (direct-injection stratified-charge) engine, has demonstrated extraordinary multifuel and cold starting capabilities. In this paper in-cylinder measurements of gas temperatures and pressures during & cold start are reported. Analysis of the results clearly indicates that the traditional description of the ignition process does not adequately explain cold starting in a late injection DISC engine. Alcohol droplets directed onto an operating spark plug at -20 °C were observed to ignite. It is believed that ignition proceeds via energy transmission from the alternating current spark, independent of the compressive heating. Ignition is therefore virtually independent of ambient temperature or fuel volatility.
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Authors
Citation
Jorgensen, S., "Compression Temperatures in a Cold Cranking Engine," SAE Technical Paper 880045, 1988, https://doi.org/10.4271/880045.Also In
References
- Hagen David L. Methanol as a Fuel: A Review with Bibliography SAE 770792 September 1977
- Gardiner D. P. Bardon M. F. Cold Start Tests on a Methanol Fueled Spark Ignition Engine SAE 831175 1983
- Bardon M. F. Rao V. K. Gardiner D. P. An Experimental and Theoretical Comparison of Methanol and Gasoline Cold Starting Performance SAE 770792 September 1977
- Siewert Robert M. Groff Edward Unassisted Cold Starts to -29 °C and Steady-State Tests of a Direct-Injection Stratified-Charge (DISC) Engine Operated on Neat Alcohols SAE 872066 1987
- Lefebvre Arthur W. Gas Turbine Combustion McGraw-Hill New York, NY 1983
- Lewis J. M. McBride T. K. UPS Multifuel Stratified Charge Engine Development-Progress Report SAE 831782 1983
- Canup Thomas Operating Manual for UPS 292 S. C. EPIC System Echlin Product Development Center revised April 1983
- Lewis J. M. Tierney W. T. United Parcel Service Applies Texaco Stratified Charge Engine Technology to Power Parcel Delivery Vans-Progress Report SAE 801429 1980
- Complete Temperature Measurement Handbook and Encyclopedia Omega 1985 T-39
- Obert Edward F. Internal Combustion Engines International Textbook Co. Scranton, PA third February 1970
- Bennett C. O. Myers J. E. Momentum, Beat and Mass Transfer McGraw-Hill Inc. New York, NY 1962
- Bird R. Byron Stewart Warren E Lightfoot Edwin N. Transport Phenomena John Wiley & Sons New York, NY 1960
- Sangeorzan Brian P. Uyehara Otto A. Myers Phillip S. Time-Resolved Drop Size Measurements in an Intermittent High-Pressure Fuel Spray SAE 841361 1984
- Van Wylen Gordon J. Sonntag Richard E. Fundamentals of Classical Thermodynamics John Wiley and Sons Inc. New York, NY 2e 1976
- Brinkman Norman D. Personal communication 1987
- Ting L. L. Mayer J. E. Jr. Piston Ring Lubrication and Cylinder Bore Wear Analysis, Part 1- Theory Technical Report 73-lub-25, ASME, Ford Scientific Research Staff November 1973
- Pefley R. K. Browning L. Espinola S. Pullman B. Gururangan R. Saito N. Research and Development of Neat Alcohol Fuel Usage in Automobiles Technical Report DOE/NASA 0143-1, DOE/NASA Univ. Santa Clara 1984