If the flywheel speed of a single cylinder four stroke diesel engine is 1800r / min, the number of fuel injection to the cylinder per second and the number of external work are as follows: A .30 15 B.15 15 C.30 30 D.15 30

If the flywheel speed of a single cylinder four stroke diesel engine is 1800r / min, the number of fuel injection to the cylinder per second and the number of external work are as follows: A .30 15 B.15 15 C.30 30 D.15 30

b
1s is 1800r / 60 = 30R
Do work twice
Do one work and spray one oil

For a single cylinder four stroke gasoline engine with a flywheel speed of 1800r / min, ()
A. Complete 60 strokes, do work 15 times B. complete 60 strokes, do work 60 times C. complete 30 strokes, do work 30 times D. complete 120 strokes, do work 30 times

The speed of flywheel is 1800r / min = 30R / s, that is to say, the flywheel rotates 30 revolutions per second, completes 15 working cycles, can complete 60 strokes, and does 15 times of work

About diesel engine power (junior high school)
490 diesel engine has four cylinders, each cylinder diameter is 90mm, piston stroke is 100mm, the average pressure of the power stroke is 7.07 × 10 5 square Pascal, calculate the work of each cylinder in a power stroke. If the flywheel speed is 2000 rpm, how much power is the diesel engine? (specific process)

W=F*S=P*s*S=707000*3.14*0.045^2*0.1=450J
P=W/S=450*2000*4/60=60000W