US Patent: 4,937,527 - Lead Assembly for a Distributorless Ignition Interface


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US Patent: 4,937,527

Lead Assembly for a Distributorless Ignition Interface

Patentees:

John C. Sniegowski (exact or similar names) - Kenosha, WI

Craig F. Govekar (exact or similar names) - Gurnee, IL

Dennis G. Thibedeau (exact or similar names) - Franklin, WI

Ron D. Geisler (exact or similar names) - Kenosha, WI

USPTO Classifications:

324/379, 324/384, 324/393, 324/402

Tool Categories:

Assignees:

Snap-On Tools Corp. - Kenosha, WI

Manufacturer:

Not known to have been produced

Witnesses:

none listed

Patent Dates:
Applied:	Jan. 12, 1989
Granted:	Jun. 26, 1990

Patent Pictures:

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Snap-On Tools Company History

Description:

Emrich & Dithmar - patent attorneys

Abstract

A distributorless ignition interface unit for use with an engine analyzer for analyzing an internal combustion engine includes a processing circuit which responds to analog signals representing true and wasted firings for the cylinders of the engine under test to determine the number of cylinders of the engine and the polarity of the firing of each cylinder and to then characterize the engine by determining the order of the true and wasted firing signals produced during an engine cycle and for producing a parade pattern of true or wasted secondary signals for application to the engine analyzer.