Ford Transit 2002 Owner's Manual page 832

engages in the slotted mounting and centralises the fuel injector.
The retainer is guided by a ball-head and is bolted to the cylinder head.
In order to achieve soft combustion, two springs with different spring rates are located on
the nozzle holder.
The first spring is tuned in such a way that a small amount of fuel is pre-injected at low
pressure at the beginning of the injection process.
This pre-injection ensures a gentle increase in the combustion pressure and achieves the
ignition conditions for the main fuel quantity which will be injected at high pressure by the
second spring.
Because of the gentle rise in pressure in the combustion chamber, the mechanical load on
the crank assembly is less and the combustion noise is lower.
Item Part Number
A -
B -
C -
1 -
2 -
3 -
4 -
5 -
Injection pipes
Description
Injector nozzle closed
Pre-injection
Main injection
Spring 1
Spring 2
Stroke 1
Stroke 1 + stroke 2
Stroke 2
http://vnx.su