Draw sketches showing fuel metering in the inline type F. I. P. and explain its working.

Draw sketches showing fuel metering in the inline type F. I. P. and explain its working.
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1 Answer

Answer :

Fuel Metering in inline type fuel injection pump:

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The position of the plunger in the fuel injection pump can be varied by means of a control rod having a rack and pinion arrangement. By operating this rod, the position of the plunger can be changed, and by changing the position of the plunger, the supply to the injection nozzle can either be increased or stopped. When the supply to the injection nozzle is stopped, the engine is also stopped. In Fig., (i) is the position of the plunger when it is at the bottom stroke. The position of the plunger when it is closing both the ports is shown in (ii). The maximum amount of supply is shown in (iii). Only at this position is the plunger working at full load. The position of the plunger at (iv) shows a normal load. The position at (v) shows a part load. The position at (vi) shows that no fuel is being supplied to the injector; i. e. the engine has stopped.

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