Measuring and testing – Vehicle chassis – Steering
Patent
1974-01-07
1976-02-17
Myracle, Jerry W.
Measuring and testing
Vehicle chassis
Steering
731173, 73134, G01L 513
Patent
active
039383776
ABSTRACT:
A method and apparatus for hot testing on a production basis, automobile engines as they come off the assembly line for performing a final check on such engines before they are installed in the automobile. The engines are tested for exhaust emissions at three points or KEY MODES of operation at which emission related engine malfunctions are most likely to appear. These points of operation are high cruise, low cruise, and idle. The engine, after it comes off the assembly line is placed in a production test stand wherein the connections for water, oil and exhaust are made, the engine is started, accelarated to the high cruise speed, and allowed to warm up for a predetermined time, after which time, measurements of hydrocarbons and carbon monoxide are taken and an appropriate indicator light lit to indicate that the engine either is within limits at this speed, or does not pass for some reason. The same procedure is followed in the low cruise and idle speeds. If one or more of the indicator lights show a reject condition, the engine is automatically removed from the production test stand and routed to a repair shop for further testing.
REFERENCES:
patent: 2220007 (1940-10-01), Winther et al.
patent: 2870875 (1959-01-01), Cline
patent: 3439534 (1969-04-01), Pilgrim
patent: 3527087 (1970-09-01), Converse et al.
Judge, A. W. The Testing of High Speed Internal Combustion Engines, 1955, p. 172, 4th Ed. revised Chapman & Hall Ltd., London.
Francois, G. W. et al. Small On-line Computer Controls Emission Test, from Automotive Engineering, Vol. 80, No. 6, June 72, p. 42.
Cline Edwin L.
Converse, III Vernon G.
Tinkham Leland P.
Clayton Manufacturing Co.
Dolgorukov D. Edward
Myracle Jerry W.
Scans Associates, Inc.
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