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How much amount in millimeter cube of fuel is injected in a pilot injection phase?

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in Automotive Engine Design by (137k points)
How much amount in millimeter cube of fuel is injected in a pilot injection phase?

(a) 1

(b) 2

(c) 5

(d) 7

I had been asked this question in exam.

Question is taken from Modern Common Rail Fuel Injection System topic in portion Diesel Engine Fuel Supply System of Automotive Engine Design

1 Answer

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Best answer
The correct answer is (a) 1

The best I can explain: The pilot injection also called a pure injection which is a short bust of fuel before the main injection during each combustion cycle is in the range of 1millimeter and 50-millimetercube for full load main injection. The injection duration is about 1 to 2milliseconds.

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