The effect of injection timing, enhanced aftercooling, and low-sulfur, low-aromatic diesel fuel on locomotive exhaust emissions

Journal Article · Wed Jul 01 04:00:00 EDT 1992 · Journal of Engineering for Gas Turbines and Power; (United States)

DOI:https://doi.org/10.1115/1.2906615· OSTI ID:7124570

Markworth, V O; Fritz, S G ^[1]; Cataldi, G R ^[2]

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1. Dept. of Emissions Research, Southwest Research Inst., San Antonio, TX (United States)
2. Research and Test Dept., Association of American Railroad, Washington, DC (United States)

An experimental study was performed to demonstrate the fuel economy and exhaust emissions implications of retarding fuel injection timing, enhancing charge air aftercooling, and using low-sulfur, low-aromatic diesel fuel for locomotive engines. Steady-state gaseous and particulate emission data are presented from two 12-cylinder diesel locomotive engines. The two laboratory engines, an EMD 645E3B and a GE 7FDL, are each rated at 1860 kW (2500 hp) and represent the majority of the locomotive fleet in North America. Each engine was tested for total hydrocarbons (HC), carbon monoxide (CO), oxides of nitrogen (NO[sub x]), and particulate. Emissions were measured at three steady-state operating conditions: rated speed and load, idle, and an intermediate speed and load. Test results on the EMD engine indicate that a 4 deg injection timing retard, along with a low-sulfur, low-aromatic fuel and enhanced aftercooling, was effective in reducing NO[sub x] from 10.5 g/hp-h to 7.2 g/hp-h; however, particulates increased from 0.15 g/hp-h to 0.19 g/hp-h, and fuel efficiency was 4.3 percent worse. Similar observations were made with the GE engine. This paper gives details on the test engines, the measurement procedures, and the emission results.

• OSTI ID: 7124570
• Journal Information: Journal of Engineering for Gas Turbines and Power; (United States), Journal Name: Journal of Engineering for Gas Turbines and Power; (United States) Vol. 114:3; ISSN JETPEZ; ISSN 0742-4795
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020800 -- Petroleum-- Waste Management
023000 -- Petroleum-- Properties & Composition
33 ADVANCED PROPULSION SYSTEMS
330102 -- Internal Combustion Engines-- Diesel
330700* -- Advanced Propulsion Systems-- Emission Control
AIR POLLUTION CONTROL
AROMATICS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COMBUSTION
CONTROL
DIESEL ENGINES
DIESEL FUELS
DISTILLATES
ENERGY SOURCES
ENGINES
ENVIRONMENTAL POLICY
EXHAUST SYSTEMS
FOSSIL FUELS
FUELS
GAS OILS
GOVERNMENT POLICIES
HEAT ENGINES
HYDROCARBONS
INTERNAL COMBUSTION ENGINES
LIQUID FUELS
MANAGEMENT
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PARTICULATES
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
PLANNING
POLLUTION CONTROL
STEADY-STATE CONDITIONS
SULFUR CONTENT
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT