Fuel, Exhaust & Engine Electrics
Page 2.21
In addition to the amount of fuel injected and the injection time, the
shape and alignment of the fuel jet is also important.
Retainers For Fuel Injectors
The four retainers -NH- for the two injectors ensure the following:
• Installation as a pre-assembled unit with injectors installed.
• Twist-lock protection for screwing on fuel lines.
• Exact installation position for aligning the fuel jet in the combustion
chamber.
• Correct pretensioning of the fuel injectors in the cylinder head.
• Vibration damper for reducing the transmission of vibrations from the
cylinder head to the injectors.
S - Spray angle (taper angle of the fuel jet,
approx. 69° on the naturally aspirated engine,
68° on the turbo engine).
B - Bend angle (distance between the injection jet
and the axis of the fuel injector; approx. 8.5°
on the naturally aspirated engine, approx.
7.5° on the turbo engine).
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