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How many degrees of advancement is provided by injection timer?

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in Automotive Engine Design by (137k points)
How many degrees of advancement is provided by injection timer?

(a) 5

(b) 8

(c) 9

(d) 6

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Question is taken from Fuel Injection Pump topic in division Diesel Engine Fuel Supply System of Automotive Engine Design

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Right answer is (b) 8

Explanation: The timing of injection will be required to be advanced with an increase in engine speed. This advancement is done by injection timer which provides a maximum of 8 degrees of Advance. The timer is mounted on the front end of the injection pump and works on the principle of centrifugal force.

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