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How much is the angle of spray cone in a single hole nozzle?

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in Automotive Engine Design by (137k points)
How much is the angle of spray cone in a single hole nozzle?

(a) 10

(b) 20

(c) 15

(d) 17

This question was addressed to me by my school principal while I was bunking the class.

Enquiry is from Diesel Engine Fuel Supply System topic in chapter Diesel Engine Fuel Supply System of Automotive Engine Design

1 Answer

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Best answer
Correct choice is (c) 15

Easiest explanation: The single hole nozzle has a spray cone angle about 15 degrees and one of the major disadvantages of this nozzle is that they tend to dribble. Besides, their spray angle is too narrow to facilitate good mixing unless higher velocities are used.

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