Achievement of stable and clean combustion over a wide operating range in a spark-assisted IDI diesel engine with neat ethanol

Journal Article · Wed Feb 01 04:00:00 EST 1984 · SAE Prepr.; (United States)

DOI:https://doi.org/10.4271/840517· OSTI ID:6461492

Murayama, T; Chikahisa, T; Miyamoto, N; Ogawa, H

Spark-assisted diesel engines operated with alcohol fuels usually display misfiring or knocking problems. This paper presents an analysis of the factors influencing the ignition characteristics of ethanol in a swirl chamber diesel engine with a multi-spark ignitor. In the experiments, cycle-to-cycle combustion variations and the degree of knocking were investigated by changing engine parameters over a wide operating range. The results of the investigations showed that stable ignition and smooth combustion is achieved when a flammable mixture is formed in the vicinity of the spark plug when only a small amount of the injected fuel has evaporated. By optimizing the design factors, operation with high efficiency and low exhaust emissions was achieved.

• Research Organization: Dept. of Mech. Eng., Hukkaido Univ.
• OSTI ID: 6461492
• Journal Information: SAE Prepr.; (United States), Journal Name: SAE Prepr.; (United States) Vol. 840517; ISSN SEPPA
• Country of Publication: United States
• Language: English

Related Subjects

090210 -- Alcohol Fuels-- Properties-- (1976-1989)
10 SYNTHETIC FUELS
33 ADVANCED PROPULSION SYSTEMS
330102* -- Internal Combustion Engines-- Diesel
ALCOHOL FUELS
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION PROPERTIES
CONTROL
DESIGN
DIESEL ENGINES
DIESEL FUELS
EFFICIENCY
ENGINES
ETHANOL FUELS
EXHAUST GASES
FLUIDS
FUEL SUBSTITUTION
FUELS
GASEOUS WASTES
GASES
HEAT ENGINES
IGNITION
IGNITION SYSTEMS
INTERNAL COMBUSTION ENGINES
KNOCK CONTROL
OPTIMIZATION
OXIDATION
PERFORMANCE TESTING
PETROLEUM PRODUCTS
SYNTHETIC FUELS
TESTING
THERMOCHEMICAL PROCESSES
WASTES