Data acquisition for use in determining malfunctions of cylinder

Details Data acquisition for use in determining malfunctions of cylinder Data acquisition for use in determining malfunctions of cylinder

1977-03-25

1979-12-25

Myracle, Jerry W.

Measuring and testing

Test stand

For engine

364551, G01M 1500

Patent

active

041799224

ABSTRACT:
Apparatus is disclosed for use in acquiring data from an internal combustion engine so that an analysis may be made as to whether any malfunction exists in the various cylinders. A succession of electrical pulses are provided and which correspond with successive crankshaft positions as the crankshaft of the engine rotates through at least one engine cycle. The time duration between the successive pulses corresponds with the time duration between successive crankshaft positions. A sufficient number of pulses are produced so as to correspond with a plurality of crankshaft positions for each power period, there being as many power periods as the number of cylinders in the engine. Circuitry is provided for responding to the pulses for the purposes of measuring the time interval between successive pulses. Time interval samples are provided having values which correspond with associated measured time intervals. These samples are then utilized to determine the existance of any cylinder malfunctions.

REFERENCES:
patent: 3581561 (1971-06-01), Tomashek et al.
patent: 3657922 (1972-04-01), Sibend
patent: 3677075 (1972-07-01), Scott
patent: 3815411 (1974-06-01), Emerson
patent: 3952586 (1976-04-01), Hanson et al.
patent: 4016753 (1977-04-01), Willenbecher et al.
patent: 4055993 (1977-11-01), Rackliffe et al.

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