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Title: Diesel Engine Alternatives

There are basically three different modes of combustion possible for use in reciprocating engines. These include, diffusion burning, as occurs in current diesel engines, flame propagation combustion such as used in conventional SI engines, and homogeneous combustion such as is used in the SwRI HCCI engine. Diesel engines currently offer significant fuel consumption benefits relative to other powerplants for on and off road applications; however, costs and efficiency may become problems as the emissions standards become even more stringent. This presentation presents a discussion of the potentials of HCCI and flame propagation engines as alternatives to the diesel engines. It is suggested that as the emissions standards become more and more stringent, the advantages of the diesel may disappear. The potential for HCCI is limited by the availability of the appropriate fuel. The potential of flame propagation engines is limited by several factors including knock, EGR tolerance, high BMEP operation, and throttling. These limitations are discussed in the context of potential for improvement of the efficiency of the flame propagation engine.
Authors:
Publication Date:
OSTI Identifier:
829804
Report Number(s):
CONF-200308--116
TRN: US200428%%1074
Resource Type:
Conference
Resource Relation:
Conference: 9th Diesel Engine Emissions Reduction (DEER) Workshop 2003, Newport, RI (US), 08/24/2003--08/28/2003; Other Information: PBD: 24 Aug 2003
Research Org:
Southwest Research Institute San Antonio, Texas (US)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EE) (US)
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; AVAILABILITY; COMBUSTION; DIESEL ENGINES; DIFFUSION; EFFICIENCY; ENGINES; FLAME PROPAGATION; FUEL CONSUMPTION; TOLERANCE