Question

To which of the following the number of radial holes equal in a distributor type fuel injection pump?

(a) To the float valve

(b) To the number of the engine cylinder

(c) To the number of gears

(d) To the number of governors

The question was posed to me in exam.

Asked question is from Fuel Injection Pump topic in section Diesel Engine Fuel Supply System of Automotive Engine Design

Answer 1

The correct option is (b) To the number of the engine cylinder

Explanation: In a distributor type fuel injection pump there is a set of radial holes (suction port) equal to the number of the engine cylinder. Similarly, the outer sleeve also has a set of an equal number of holes (delivery ports ) which are offset from the suction ports.