Question

in four wheelers which type of clutch plate is used?

Answer 1

In a smaller, motorcycle-sized four-wheeler you might be more likely to see a motorcycle-style wet multiple plate clutch (many smaller plates in a stack, bathed in oil), and if it's an automatic, something like a centrifugal clutch will likely be used.

The dry single plate type of friction clutch is almost used in American passenger cars. The various types of clutches used in the automobile depend upon the type and use of friction. Most designs of the clutches use a number of coil springs but some use a diaphragm or conical type spring.