Apparatus and method for limiting excessive engine speeds in...

Details Apparatus and method for limiting excessive engine speeds in... Apparatus and method for limiting excessive engine speeds in...

2007-07-31

2007-07-31

Wolfe, Jr., Willis R (Department: 3747)

Internal-combustion engines

Engine speed regulator

Engine speed reduction by partial or complete omission of...

C123S601000

Reexamination Certificate

active

11295199

ABSTRACT:
A controlled slow down apparatus and method for use in the event that a light-duty combustion engine has entered a state of excessive speeds or auto-ignition. The controlled slow down method is preferably initiated when the engine speed exceeds an activation speed for a predetermined number of engine revolutions. Once initiated, the controlled slow down method uses a combination of ignition timing and spark ratio manipulations in order to disrupt the auto-ignition conditions and slow down the engine in a controlled manner. Preferably, the controlled slow down method is only one part of an overall ignition control method, and can be incorporated within or utilized by one of a number of different ignition timing methods known in the art.

REFERENCES:
patent: 4211195 (1980-07-01), Zechlin
patent: 4404940 (1983-09-01), Sieja
patent: 4606323 (1986-08-01), Nash
patent: 4697560 (1987-10-01), Umehara
patent: 5755199 (1998-05-01), Costello et al.
patent: 6408820 (2002-06-01), LaMarr, Jr.
patent: 6932064 (2005-08-01), Kolak et al.
patent: 59180066 (1984-10-01), None

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