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How many way valves are present in a damper plunger of an S U carburetor?

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How many way valves are present in a damper plunger of an S U carburetor?

(a) One

(b) Two

(c) Three

(d) Four

I had been asked this question in final exam.

The above asked question is from Petrol Engine Fuel Supply System topic in division Petrol Engine Fuel Supply System of Automotive Engine Design

1 Answer

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Best answer
Correct option is (a) One

For explanation I would say: The damper plunger has a one-way valve in it. It regulates the rate of lift of piston but allows the same to fall freely when the throttle valve is closed. However the throttle valve is opened suddenly for acceleration, the lifting speed of the piston is retarded by the damper plunger.

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