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ViT , supervit

Normally in jerk type fuel pump only end of injections control while in vit we have beginning and end of injections both control .
Therefore we are getting the p Max at 85% of MCR .
with the use of Vit fuel economy can be increased .
In case of super vit we can have control over injection timing with fuel index and breaking point .
Breaking point is the point after which pressure deceleration takes place .

Vit = variable beginning of injection + variable end of injection =adjustable timing of injection

Super vit = variable beginning of injections + variable end of injection + adjustable breaking point

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