This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Utilizing Neat Methanol and Glow Plug Ignition in DI Diesels: Laboratory Testing of a Single and Multi-Cylinder Engine
Annotation ability available
Sector:
Language:
English
Abstract
A laboratory investigation was conducted on the utilization of neat methanol and glow plug ignition in direct injection four cycle diesel engines. Two engines were used in the investigation: a single cylinder engine, and a heavy duty six cylinder engine. The principle goals of the investigation were to obtain emissions data for this type of engine, and to identify engine configurations (i.e., piston shape, injector design, combustion chamber swirl, injection timing) that were effective in reducing emissions.
The single cylinder investigation found that the interaction of injector sprays with the piston bowl and the glow plug, had a strong effect on engine emissions. Impingement of fuel on the surface acted to reduce oxides of nitrogen (NOx), but to increase hydrocarbon emissions. The addition of swirl tended to reduce hydrocarbon, but increased oxides of nitrogen emissions.
Engine operation was demonstrated over the entire speed and load range on the warmed up multi-cylinder engine, with glow plugs turned off, indicating compression ignition. On both glow plug ignition and compression ignition, engine operation was sensitive to the injection timing. Preliminary transient tests indicated that the multi-cylinder engine could produce NOx emissions below the EPA 1994 Standards. These tests also indicated unacceptable hydrocarbon and carbon monoxide emissions. It is likely that hydrocarbon and carbon monoxide emissions can be significantly reduced through improved control of injection timing, and through further improvements to the piston/injector design.
Recommended Content
Authors
Topic
Citation
Goetz, W., Barringer, C., and Bozzelli, M., "Utilizing Neat Methanol and Glow Plug Ignition in DI Diesels: Laboratory Testing of a Single and Multi-Cylinder Engine," SAE Technical Paper 941044, 1994, https://doi.org/10.4271/941044.Also In
References
- “Diesel Engine Emission Measurement” SAE Recommended Practice SAE J1003 February 1984
- Meurer J.S. “Progress in the Formation of the Mixture and in Combustion in Diesel Engines” Institution of Mechanical Engineers December 14 1966 1966 67 181
- Martin J.K. Ahmad T. “Heat-Release Characteristics of an Open-Chamber Diesel Engine Employing a Wall-Wetting Combustion System” SAE Paper 860420
- “Emission Regulations for New Otto-Cycle and Diesel Heavy Duty Engines; Gaseous and Particulate Exhaust Test Procedures” Code of Federal Regulations 40 Protection of the Environment
- Seibers D.L. Edwards C.F. “Autoignition of Methanol and Ethanol Sprays under Diesel Engine Conditions” SAE Paper 870588
- Miller P.M. Savonen C.L. “Development Status of the Detroit Diesel Corporation Methanol Engine” SAE Paper 901564
- Toepel R.R. Bennethum J.E. Heruth R.E. “Development of Detroit Diesel Allison 6V-92TA Methanol Fueled Coach Engine” SAE Paper 831744
- Hikino K. Suzuki T. “Development of Methanol Engine with Autoignition for Low NOx Emission and Better Fuel Economy” SAE Paper 891842
- LoRusso J.A. Cikanek H.A. “Direct Injection Ignition Assisted Alcohol Engine” SAE Paper 880495