Operation
4002−1/A1
Winterthur Gas & Diesel Ltd.
11/ 22
3.4 Cylinder Lubricating Control
3.4.1 General
The cylinder lubricating system (see Fig. 6) is a time-based system, that supplies
lubricating oil on to the cylinder liner wall.
Each CCM-20 controls the solenoid valves CV7131−38C that activate an oil pulse on
the related cylinder. The pressure sensors PT3131−38C, attached to the lubricating
pump, give measurements about the injection pressure of the cylinder lubricating oil.
The engine control system uses these measured values to adjust the injection timing
to compensate hydraulic and mechanical delays in the system.
The timing and vertical oil supply can be set to the applicable values related to the
engine type and engine design. A controlled quantity of lubricating oil then injects as
jet above, into and below the piston and piston ring pack (see 7218−1 Cylinder
Lubrication, paragraph 8.3).
The specific quantity (g/kWh) of cylinder lubricating oil is related to the engine
speed/ engine load in a defined time period. The basic input to control functionality
are the base feed rate settings (see 7218−3 Feed Rate − Adjustment and
4002−2 Local Control Panel/Local Display Unit LDU-20, paragraph 3.9).
3.4.2 Emergency Mode
If a CCM-20, solenoid valve or pressure sensor becomes defective, an indication
shows on the LDU-20. The indication is also sent to the AMS. If a CCM-20 or 4/2-way
solenoid valve becomes defective, the engine power output will be limited to engine
slowdown level. If an CCM-20 becomes defective, see the data given in
0530−1 Operation during Unusual Conditions, CCM-20 Failure.
Engine Control System
2015-12
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