Internal-combustion engines – Spark ignition timing control – Electronic control
Reexamination Certificate
2011-02-17
2011-11-01
Cronin, Stephen K (Department: 3747)
Internal-combustion engines
Spark ignition timing control
Electronic control
C123S406590, C073S114250, C073S114260
Reexamination Certificate
active
08047181
ABSTRACT:
A device is disclosed for sensing the speed of an EMD 567/645/710 two-cycle diesel engine having a crankcase, electronic fuel injectors and an electronic control system for controlling the electronic fuel injectors. The device includes a spline shaft sized for insertion into the crankcase of the engine so that the spline shaft rotates with the engine, a gear operably secured to the spline shaft to rotate with the spline shaft and sized to rotate with the engine in a 1:1 ratio, and at least one electronic sensor located adjacent the gear to sense rotation of the gear. The at least one electronic sensor is connectable to the electronic control system to provide electronic signals to the electronic control system for determining when to inject fuel with the electronic fuel injectors. Also disclosed is a method for retrofitting the engine and a kit for retrofitting the engine.
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Harrison Edward H.
Mulder Keith
Schlairet Edward A
Cronin Stephen K
Haynes Corporation
Najmuddin Raza
Porter Wright Morris & Arthur LLP
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