Method and apparatus for detecting forward/reverse speeds of...

Details Method and apparatus for detecting forward/reverse speeds of... Method and apparatus for detecting forward/reverse speeds of...

2006-11-30

2010-10-19

Wachsman, Hal D (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Electrical signal parameter measurement system

C702S078000, C702S142000, C702S145000, C477S037000

Reexamination Certificate

active

07818134

ABSTRACT:
A method and apparatus for detecting forward/reverse speeds of a continuously variable transmission for vehicles determines whether a vehicle is in a forward speed state or in a reverse speed state by using one speed detector having two sensors. The method for detecting forward/reverse speeds of the continuously variable transmission for vehicles includes detecting first and second rotational speeds of an output shaft modulating the first and second rotational speeds of the output shaft into a pulse width modulation signal, comparing the pulse width of the pulse width modulation signal with predetermined values, and determining whether a vehicle is in a forward speed state or in a reverse speed state.

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