The Acceleration-Deceleration Test Technique for Conditioning Monitoring of Spark-Ignition Engines University of Missouri-Columbia

Format:

Conference/Event

Author/Creator:

Mueller, Gary, author.

Conference Name:

1988 SAE International Off-Highway and Powerplant Congress and Exposition (1988-09-12 : Milwaukee, Wisconsin, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1988

Summary:

Engine speed fluctuations have been used to detect and identify misfiring cylinders in multi-cylinder internal combustion engines for many years. The bulk of previous research in this area has concentrated upon steady-state engine operation while sampling engine speed many times during each crankshaft revolution. This paper examines the use of engine speed fluctuations for diagnostic purposes during free acceleration and deceleration of the engine and the possible advantages of transient testing over steady-state testing Previous researchers employed crankshaft encoders or similar devices, which are not available on production engines, to sense angular position. This paper examines the use of the spark initiation signal, from which most present shop diagnostic equipment determines engine speed. Methods for testing overall engine torque and cylinder-to-cylinder torque balance using the spark initiation signal are investigated

Notes:

Vendor supplied data

Publisher Number:

881326

Access Restriction:

Restricted for use by site license