•
Air spring
When the exhaust valve is closed, compressed air flows through an air inlet connection into
the air spring (011). When the exhaust valve opens, this air is compressed to a higher value.
When the hydraulic oil pressure releases, the compressed air expands and thus closes the
exhaust valve.
•
Thrust piece
The thrust piece on the valve spindle (005) prevents damage to the inside piston (002) and
to the top of the valve spindle (005) when the exhaust valve operates.
•
Valve stroke sensor
The valve stroke sensor monitors and transmits the open and closed positions of the valve
spindle (005) to the ECS.
•
Cup spring
The cup spring (010) absorbs vibration and shock to prevent damage to the exhaust valve.
Different parts of the exhaust valve are lubricated as follows:
•
Leakage oil from the outer piston and inner piston (002) lubricates the air spring piston (004).
Oil in the leakage oil collection space (012) drains to the leakage oil drain.
•
While the exhaust valve closes, oil flows through the air spring piston (004) and into the air
spring (011). The air in the air spring (011) changes oil that collects at the bottom of the air
spring into a mist. The mist lubricates the upper part of the valve spindle (005).
•
Oil that collects at the bottom of the air spring (011) flows through a groove on the lower
side of the distance ring and through holes in the guide bush. Thus the oil lubricates the
bottom part of the valve spindle (005).
•
When the exhaust valve opens, oil flows out of the air spring (011) through the throttle valve
in the air spring pipe to the collector for leakage oil. The oil in the collector automatically
drains through the leakage oil pipe into the crankcase.
X92-B
AA00-2751-00AAA-043A-A
Operation Manual
Exhaust valve
Winterthur Gas & Diesel Ltd.
- 135 -
Issue 002 2021-11
Содержание X92-B
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