Effects of Engine Oil Composition on the Activity of Exhaust Emissions Oxidation Catalysts Research Laboratories, General Motors Corporation

Format:

Conference/Event

Author/Creator:

Gallopoulos, N. E., author.

Conference Name:

National Automobile Engineering Meeting (1973-05-14 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1973

Summary:

Platinum, palladium, and copper-chromium oxidation catalysts for exhaust emission control were exposed to exhaust gases from a steady-state engine dynamometer test in which the amount of oil consumed per unit volume of catalyst was high. When unleaded gasoline (0.004 Pb g/gal, 0.004 P g/gal) was used, conventional SE oil caused somewhat greater loss of catalyst activity than an ashless and phosphorus-free ("clean") oil. Chemical analysis of the catalyst indicated that phosphorus from the conventional oil was probably responsible for the difference. However, a test run with low-lead (0.5 Pb g/gal, 0.004 P g/gal) gasoline and "clean" oil caused much greater catalyst activity deterioration than either of the tests with unleaded gasoline. The findings of this study indicate that engine oil effects on catalyst durability are of secondary practical importance, and that conventional SE engine oils will probably be acceptable for cars equipped with catalytic converters for the oxidation of exhaust hydrocarbons and carbon monoxide

Notes:

Vendor supplied data

Publisher Number:

730598

Access Restriction:

Restricted for use by site license