Catalyst activity test

Details Catalyst activity test Catalyst activity test

1994-05-02

1995-07-11

Chilcot, Jr., Richard E.

Measuring and testing

Vehicle chassis

Steering

73 2331, G01L 326

Patent

active

054310431

ABSTRACT:
A method for testing the catalyst activity of a catalytic converter installed in the exhaust system of an internal combustion engine involves running the engine to heat the converter to a normal operating temperature. Once the converter has reached a desired temperature the engine is shut off and the fuel and ignition systems of the engine are disabled and a source of hydrocarbon is introduced at a location upstream of the converter such as the air induction system. Upon introduction of the hydrocarbons, the engine is cranked to thereby pump the hydrocarbon through the system where it is mixed with air and to the converter where the mixture is subject to conversion. The exhausted constituents are analyzed and the activity of the converter is determined based on the levels thereof.

REFERENCES:
patent: 4116053 (1978-09-01), Blanke
patent: 4164142 (1979-08-01), Blanke
patent: 4372155 (1983-02-01), Butler et al.
patent: 5265693 (1993-11-01), Rees et al.
"Field Testing of Catalytic Converters" Catalytic Converters the Theory of Operation and Functional Diagnosis Manual, Aug., 1992, pp. 72-91.
"Idle Mixture Adjustment" 1978 Product Information Supplement, Nov. 1977, pp. 1-8.

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