Exhaust Valve Air Spring Pipes
The exhaust valve is opened hydraulically by the
Fuel Injection Valve Actuator (FIVA) system which
is activated by the Engine Control System, and
the closing force is provided by an ‘air spring’
which leaves the valve spindle free to rotate.
The item Nos. refer to ‘Guidance values automation’
The piping is delivered with and tted onto the engine
121 36 87-1.1.0c
The compressed air is taken from the control air
supply, see Fig. 3.03.02.
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