Hydrocarbon reductions through precombustion-chamber design in a natural gas lean-burn engine. Topical report, February-October 1990. Final draft report
A study was conducted to evaluate the effects of various precombustion chamber design, operating, and control parameters on the exhaust emissions of a natural gas research engine. Analysis of the results showed that engine-out total hydrocarbons and oxides of nitrogen can be reduced, relative to conventional methods, through precombustion chamber design. More specifically, a novel staged prechamber yielded significant reductions in NOx and total hydrocarbon emissions by promoting stable ignition while operating with a high percentage of theoretical excess air. Relatively light load and fuel lean operation with the Staged Prechamber simultaneously reduced baseline NOx and hydrocarbons by 47 percent and 14 percent, respectively. Emissions reductions were realized at other loads and air/fuel ratios to lesser extents. The purpose of the report is to identify and explain positive and deleterious effects of natural gas prechamber design on exhaust emissions.
- Research Organization:
- Southwest Research Inst., San Antonio, TX (United States). Engine, Fuel, and Vehicle Research Div.
- OSTI ID:
- 6037060
- Report Number(s):
- PB-92-116219/XAB; SWRI-3178-2-1; CNN: GRI-5089-293-1848
- Resource Relation:
- Other Information: Sponsored by Gas Research Inst., Chicago, IL
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COMBUSTION CHAMBERS
DESIGN
HYDROCARBONS
AIR POLLUTION ABATEMENT
NATURAL GAS
STAGED COMBUSTION
NITROGEN OXIDES
COMBUSTION
COMBUSTION PRODUCTS
EXHAUST GASES
IGNITION
OPERATION
TEST FACILITIES
CHALCOGENIDES
CHEMICAL REACTIONS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASEOUS WASTES
GASES
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
THERMOCHEMICAL PROCESSES
WASTES
034000* - Natural Gas- Combustion
030700 - Natural Gas- Waste Management