Combustion, friction and fuel tolerance improvements for the IDI diesel engine

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

DOI:https://doi.org/10.4271/840515· OSTI ID:6461519

Wade, W R; Hansen, S P; Hunter, C E; Jones, C M; White, J E

Fuel economy, emission and power capability of IDI Diesel engines were defined from mapping surveys of 12 production engines. Improved fuel economy, lower emissions and increased tolerance for lower quality fuels were obtained from reductions in friction and modifications to the combustion system. A 16% reduction in friction obtained with low tension piston rings, low friction coating on the piston skirt and roller followers provided an 8% reduction in fuel consumption. Combustion system modifications consisting of a smaller throat prechamber and an air cell provided 26% and 41% reductions in particulates, respectively. Reductions in cetane number from 47.5 to 32.5 resulted in a 31% increase in particulates, but addition of a cetane improver reduced the increase to only 4%. Both combustion system modifications, when operated on 32.5 cetane fuel without the cetane improver, provided lower particulates relative to the baseline combustion system operated on 47.5 cetane fuel.

• Research Organization: Ford Motor Co.
• OSTI ID: 6461519
• Journal Information: SAE Prepr.; (United States), Journal Name: SAE Prepr.; (United States) Vol. 840515; ISSN SEPPA
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330102* -- Internal Combustion Engines-- Diesel
AIR POLLUTION ABATEMENT
ANTIKNOCK RATINGS
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION CONTROL
COMPARATIVE EVALUATIONS
CONTROL
DESIGN
DIESEL ENGINES
DIESEL FUELS
ENERGY CONSUMPTION
ENGINES
EXHAUST GASES
FLUIDS
FRICTION
FUEL CONSUMPTION
FUEL ECONOMY
GASEOUS WASTES
GASES
HEAT ENGINES
IGNITION SYSTEMS
INTERNAL COMBUSTION ENGINES
MODIFICATIONS
OXIDATION
PERFORMANCE
PETROLEUM PRODUCTS
PISTONS
POLLUTION ABATEMENT
RINGS
THERMOCHEMICAL PROCESSES
WASTES