Development Status of the Detroit Diesel Corporation Methanol Engine

Miller, Stanley P.; Savonen, Craig

doi:10.4271/901564

Cited by 13 publications

(3 citation statements)

References 4 publications

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“…West Virginia University has developed a transportable heavy-duty vehicle emissions testing laboratory that has been used to conduct chassis dynamometer tests on heavy-duty vehicles operated on methanol and other alternative fuels (Wang et al, 1993a). Caterpillar (Richards, 1990, Waldman, 1990, Detroit Diesel Corporation (DDC) (Miller and Savonen, 1990) and other institutions, such as the Southwest Research Institute (Carroll et al, 1990;Bechtold et al, 1991) have also published dynamometer test results for HDD engines operating on methanol. The CEC is testing MlOO and M85 school buses with DDC 6V92 engines as part of the Safe School Bus Clean Fuel Efficiency Demonstration Program.…”

Section: 2 Methanolmentioning

confidence: 99%

Atmospheric Process Evaluation of Mobile Source Emissions

Author¹

1995

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Section: 2 Methanolmentioning

confidence: 99%

Atmospheric Process Evaluation of Mobile Source Emissions

Author¹

1995

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“…Commercial engine development was addressed by the Detroit Diesel Corporation in the early 1980's with the production of a methanol-fueled, compression-ignited (CI) engine [1]. The combination of low cetane number and large enthalpy of vaporization was addressed by retaining hot combustion products within the cylinder to create sufficient ignition conditions near top dead center (TDC) with a relatively high compression ratio, up to 23:1 [2]. The engine operated in a direct-injection, two-stroke fashion, and the amount of exhaust gas removed during the scavenging process was controlled for stable combustion.…”

Section: Introductionmentioning

confidence: 99%

Prospects for High-Temperature Combustion, Neat Alcohol-Fueled Diesel Engines

Roberts¹,

Johnson²,

Edwards³

2014

SAE Int. J. Engines

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The use of neat alcohols, namely methanol and ethanol, in direct-injection, compression-ignited engines is difficult, most notably due to their poor ignitability. By employing a high-temperature combustion strategy, this challenge may be overcome, thus creating the opportunity for using these oxygenated and inherently low-sooting fuels for heavy-load applications.Experimental data are provided from a single-cylinder research engine that shows particulate matter (PM) emissions for Diesel-style combustion of both methanol and ethanol that are below the current US Government regulation limit. The level of particulates remained low up to stoichiometric ratios of fuel and air. A complete emissions analysis indicates a high combustion efficiency of ∼ 96% at stoichiometric conditions.In order to achieve reliable combustion, some form of intake-air preheating was required. The issue of ignitability is addressed with modeling which indicates that highly turbocharged, non-intercooled air into a cylinder with low heat rejection (LHR) surfaces can achieve conditions that satisfy acceptable ignition delay requirements. With increased exhaust enthalpy, opportunities exist to use thermal or mechanical exhaust regeneration strategies. All of these features contribute to a clean, high-efficiency Diesel engine with heavy-load capability.To explore the nature of soot formation within alcohol spray jets, images are provided from another single-cylinder device with optical access. The images show single-plume combustion for both methanol and ethanol into an air environment similar to that of an engine. Broadband luminosity is observable for both fuels within the interior of each jet. This indicates that a balance exists between soot formation and oxidation, the difference of which is responsible for engine-out emissions.

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“…First, methanol alone or methanol with ignition-improver can be burned in a diesel engine with or without ignition aids. This method has received active research in the 1980s and the early 1990s, leading to the introduction of methanol-fueled buses in New York and in Los Angeles. − However, the development of methanol-fueled vehicles had slowed down in the late 1990s due to the operational problems associated with these vehicles. Second, methanol can be mixed with diesel fuel and a stabilization additive.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Effect of Port-Injected Methanol on the Performance and Emissions of a Diesel Engine at Different Engine Speeds

Cheung¹,

Zhang²,

Chan³

et al. 2009

Energy Fuels

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This study is aimed at investigating the effect of port-injected methanol on the performance and emissions of a diesel engine under different engine loads and engine speeds. Experiments were performed on a fourcylinder diesel engine operating at three engine speeds and five engine loads for each speed. The results show that when methanol is injected into the intake port of the diesel engine, the brake thermal efficiency decreases at low engine loads but has no significant change at medium to high engine loads. There is also a reduction of NO x and particulates but a significant increase in CO, HC, NO 2 , unburned methanol, and formaldehyde emissions. The application of port-injected methanol shows potential greenhouse benefits only at high engine loads with a high level of fumigation methanol. With a diesel oxidation catalyst, the HC, CO, unburned methanol, and formaldehyde emissions are significantly reduced when the exhaust gas temperature is sufficiently high. The results are consistent at each engine speed.

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Development Status of the Detroit Diesel Corporation Methanol Engine

Cited by 13 publications

References 4 publications

Atmospheric Process Evaluation of Mobile Source Emissions

Atmospheric Process Evaluation of Mobile Source Emissions

Prospects for High-Temperature Combustion, Neat Alcohol-Fueled Diesel Engines

Investigation on the Effect of Port-Injected Methanol on the Performance and Emissions of a Diesel Engine at Different Engine Speeds

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