Two-stage injection reduces diesel cetane requirements

Journal Article · Sun May 01 00:00:00 EDT 1983 · Automot. Eng.; (United States)

OSTI ID:5401095

This article shows how dividing the total charge of a low-cetane-number fuel between a pilot and main injection can provide satisfactory medium-speed diesel operation at essentially no thermal efficiency cost. Staged injection of a medium-speed diesel engine with low-cetane-number fuels can provide means of using alternative fuels without requiring dual-fuel systems. Alternative fuel studies for medium-speed diesel engines have provided a variety of liquids of low and marginal cetane numbers. The feasibility of expanding the cetane-number tolerance of a laboratory EMD 567B medium-speed diesel engine via staged injection is examined. Methanol staged injection tests were found to be unsuccessful, using a 20:1 compression ratio in the same engine, but still may be feasible.

• OSTI ID: 5401095
• Journal Information: Automot. Eng.; (United States), Journal Name: Automot. Eng.; (United States) Vol. 91:5; ISSN AUEGB
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330800* -- Emission Control-- Alternative Fuels
ANTIKNOCK RATINGS
DIESEL ENGINES
ENGINES
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
FUELS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
SYNTHETIC FUELS