Operation
2751−1/A1
Winterthur Gas & Diesel Ltd.
5/ 5
3. Lubrication
Leakage oil from the outer piston (4, Fig. 2) and inner piston (5) lubricates the air
spring piston (9). Oil in the leakage oil collection space (17) drains to the leakage oil
drain (LD).
While the exhaust valve closes, oil flows through the air spring piston (9) and into the
air spring (AS). The air from the air inlet (AI) changes the oil that collects at the
bottom of the air spring (AS) (at the inlet bore IB) into a mist. The mist lubricates the
top part of the valve spindle (16).
When the exhaust valve opens, unwanted oil flows out of the air spring (AS) through
the air spring pipe to an accumulator. The oil in the accumulator automatically drains
through the leakage oil pipe at the driving end of the exhaust valves into the
crankcase.
Oil from the oil bath (OB) lubricates the bottom part of the valve spindle (16).
Exhaust Valve
2014
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