Method for monitoring engine order forcing frequency

Details Method for monitoring engine order forcing frequency Method for monitoring engine order forcing frequency

2005-11-01

2005-11-01

Mohanty, Bibhu (Department: 3747)

Internal-combustion engines

Engine speed regulator

C073S579000, C073S570000, C073S584000, C073S116070

Reexamination Certificate

active

06959688

ABSTRACT:
A method of monitoring engine order forcing frequency comprises the steps of:selecting at least one engine order for an engine, the engine order being related in a known manner to one or more engine vibration responses generated by the forcing of the engine order;receiving measurement data which provide a measure of the change in the frequency of the or each vibration response as the engine speed varies, and calculating therefrom the change in the engine order forcing frequency; anddetermining, on the basis of the calculated change in the engine order forcing frequency, a corresponding change in at least one second engine order forcing frequency for the engine as the engine speed varies.

REFERENCES:
patent: 5560336 (1996-10-01), Takahashi et al.
patent: 6471482 (2002-10-01), Montgomery
patent: 6510732 (2003-01-01), Liang et al.
patent: 1353732 (1974-05-01), None

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