New Holland SmartTrax T8.320 Service Manual page 34

The engine brake is activated when the pedal left of the
clutch is depressed.
Air Induction - cross flow cylinder head
The cylinder head is of the cross flow design, inlet on one
side and exhaust on the other. This and four valves per
cylinder give it excellent breathing ability and efficient tem-
perature control. The air is supplied to the inlet by a waste-
gate turbocharger or a Variable Geometry Turbocharger
(VGT).
Wastegate turbocharger
The wastegate turbocharger allows for a larger tur-
bocharger to be installed producing higher boost pres-
sures in the low and midrange rpm while not over-boosting
at high rpm.
Intake pressure builds against a diaphragm in the waste-
gate and opens a valve allowing exhaust to bypass the
turbine therefore slowing the compressor and limiting the
pressure in the intake manifold.
Engine - Engine and crankcase
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