Operation
2124−1/A1
Winterthur Gas & Diesel Ltd.
1/ 3
Cylinder Liner
1. General
The screws (7, Fig. 1) and holders (6) hold the cylinder liner (4) in the cylinder jacket
(5). The nuts of the elastic bolts attach the cylinder cover (1), cylinder liner (4) and the
top and bottom water guide jacket (2) and (3), to the cylinder jacket (5).
The surfaces of the cylinder liner (4) and the cylinder jacket (5) make the metallic seal
MS. A non-hardening compound is applied around the surface of the metallic seal MS
to prevent leakage.
An antipolishing ring (10) is installed in the top part of the cylinder liner (4). The
antipolishing ring removes coke contamination at the piston crown during operation.
2. Cooling
The cooling water flows through CI into the bottom water guide jacket (2) to the water
space WS and around the cylinder liner (4). Cooling water flows also through the tube
(11) into the top water guide jacket (3).
From the top water guide jacket (3), the cooling water flows through the cooling bores
(9) and the cylinder cover (1) into the exhaust valve cage. Cooling water then flows
through the cooling water outlet (3, Fig. 2) and back to the plant.
The O-rings (12, Fig. 1) are used to seal the water space WS. If water leaks you must
replace the O-rings as soon as possible.
To prevent unwanted tension in the top part of the cylinder liner, the temperature of
the cooling water must be kept in the permitted range. The maximum permitted
temperature ranges are:
D ±2_C at constant load
D ±4_C during load changes.
3. Lubrication
Cylinder lubricating oil flows to the running surface of the cylinder liner (4) through
eight lubricating quills (8). The lubricating grooves LG are milled around the
circumference of the cylinder liner and make sure that the lubricating oil is equally
supplied (see 2138−1 Lubricating Quill).
Oil between the piston rings collects in the oil grooves OG and stays on the surface of
the cylinder liner. This oil can decrease the lubricating oil feed rate.
For more data about the cylinder lubrication, see 7218−1.
2014
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