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Some Heat Release Aspects of Compression Igniting a Single-Cylinder DI Diesel on Neat Methanol
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Abstract
Tests were performed on a single-cylinder direct-injection (DI) research diesel engine to evaluate the influence of methanol fuel on net heat release. The test program examined the use of a small pilot injection of methanol and intake-air heating as a means of compression igniting (CI) the main methanol injection. Heat-release characteristics calculated from pressure-time data and engine observations were compared between methanol and no. 2 diesel fuel.
It was found that using a small pilot approximately 20 deg CA BTDC and increasing the intake temperature to about 100 deg C gave very consistent ignition. Rate shaping of the main injection was necessary to avoid too fast initial combustion during the main injection. The maximum rate of premixed combustion was approximately half of normal diesel values, and the maximum rate of diffusion combustion was higher at low load but lower at high load for methanol.
Exhaust hydrocarbons were two to three times higher for methanol than for diesel fuel, whereas nitrogen oxides were approximately half and soot (measured as Bosch number) was almost absent using methanol. The indicated thermal efficiency for the two fuels was similar.
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Henningsen, S., "Some Heat Release Aspects of Compression Igniting a Single-Cylinder DI Diesel on Neat Methanol," SAE Technical Paper 892055, 1989, https://doi.org/10.4271/892055.Also In
References
- Bro K. Pedersen P. S. “Alternative Diesel Engine Fuels: An Experimental Investigation of Methanol, Ethanol, Methane and Ammonia in a D.I. Diesel Engine with Pilot Injection,” SAE Paper No. 770794 1977
- Alternate Fuels Committee of the Engine Manufacturers Association “A Technical Assessment of Alcohol Fuels,” SAE Transactions 91 1041 1077 1982 Paper No. 820261
- Toepel R. R. Bennethum J. E. Heruth R. E. “Development of Detroit Diesel Allison 6V-92TA Methanol Fueled Coach Engine,” SAE Transactions 92 4.959 4.975 1983 Paper No. 831744
- Kroeger C. A. “A Neat Methanol Direct Injection Combustion System for Heavy-Duty Applications,” SAE Paper No. 861169 1985
- Bertilsson B.-I. Gustavsson L. “Experiences of Heavy-Duty Alcohol-Fueled Diesel-Ignition Engines,” SAE Transactions 96 5.199 5.207 1987 Paper No. 871672
- Hardenberg H. O. Weiss E. K. J. Myburgh I. S. “Mechanical Problems with the Use of Ignition-Improved Methanol in a Heavy-Duty Diesel Engine,” SAE Paper No. 872092 1987
- Havenith C. Kuepper H. Hilger U. “Performance and Emission Characteristics of the Deutz Glow Plug Assisted Heavy-Duty Methanol Engine,” SAE Transactions 96 5.220 5.231 1987 Paper No. 872245
- McCabe R. W. Mitchell P. J. Lipari F. Scruggs W. F. Warburton R. C. “Catalyst Evaluation on a Detroit Diesel Allison 6V-92TA Methanol-Fueled Engine,” SAE Transactions 96 7.818 7.825 1987 Paper No. 872138
- LoRusso J. A. Cikanek H. A. “Direct Injection Ignition Assisted Alcohol Engine,” SAE Paper No. 880495 1988
- Siebers D. L. Edwards C. F. “Autoignition of Methanol and Ethanol Sprays under Diesel Engine Conditions,” SAE Transactions 96 5.140 5.152 1987 Paper No. 870588
- Kidd C. A. Kreeb R. M. “Conversion of a Two-Stroke Diesel Bus Engine to Methanol Fuel,” SAE Paper No. 841687 1984
- Kato S. Onishi S. “Stratified Charge Methanol Engine by Impingment of Fuel Jet (OSKA),” 8th Symposium on Alcohol Tokyo 1988 513 518
- Cichocki R. Cartellieri W. “The Passenger Car Direct Injection Diesel - A Performance and Emissions Update,” SAE Paper No. 810480 1981
- Elsbett K. Elsbett G. Elsbett L. Behrens M. “The Ferrum Piston for Diesel Engines, a Two-Piece Articulated Piston Design,” SAE Transactions 94 3.748 3,752 1985 Paper No. 850505
- Thien G. “Entwicklungsarbeiten an Ventilkan [ILLEGIBLE] len von Viertakt-Dieselmotoren,” Oesterichische Ingenieuraeitschrift, Jg. 8, heft 9 1965
- Wolff G. D. Ziemachki M. S. “Needle Lift Sensor Design Guide. Analog Sensor,” Wolff Controls Corporation Report No. EI01-01/84 1984
- Henningsen S. “Evaluation of Emissions and Heat-Release Characteristics from a Simulated Low-Heat-Rejection Diesel Engine,” SAE Transactions 96 4.811 4.826 1987 Paper No. 871615
- Henningsen S. “Hydrocarbon Emissions from the Ignition-Delay Period in a Direct-Injection Diesel Engine,” SAE Transactions 93 6.28 6.40 1984 Paper No. 841381