Operation2751−1/A1
Winterthur Gas & Diesel Ltd.
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The air spring (AS) is below the air spring piston (9, Fig. 2).
The valve stroke sensor (19) monitors and transmits the open and closed positions of
the valve spindle (16) to the engine control system (ECS).
If there is a large pressure difference between when the exhaust valve opens and the
pressure in the air spring (AS), damage can occur to the exhaust valve. Thus, for
safety the cup springs (10) are installed to absorb vibration and shock.
The thrust piece (6) prevents damage to the inner piston (5) and the top of the valve
spindle (16) when the exhaust valve operates.
Note: Before the lubricating oil pump and servo oil service pump are set to on,
the air spring must have pressure and the exhaust valves must be closed.
The engine cannot start if the exhaust valves are not fully closed.
Exhaust Valve
2014
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