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On this page you can find replies to a number of frequently asked questions on BHP Regulation. If you find the replies incomplete, you are welcome to contact us with a description of your question or problem. We shall then try to help you best possible.
The MEP regulation adjusts the consumption according to the mean effective pressure, whereas the BHP regulation adjusts according to the engine load. The design of the MEP and the BHP regulation is the same. The difference lies in the design of the cam which is produced specifically for each plant based on an algorithm calculation.
The BHP regulation is a means to save cylinder lube oil and at the same time maintain a safe operation condition during part load. On all engines with timed cylinder lubrication, too much cylinder lube oil is applied in the part load area. This happens because the engine has an rpm dependent injection and the cylinder lube oil consumption has been specified as a function: g/BHPh of the engine load.
When operating in part load areas, the BHP regulation can help adjust the cylinder lube oil consumption to the actual need.
The LCD regulation, on the other hand, is an automatic joint quantity adjustment, which increases the cylinder lube oil injection in case of manoeuvres and load changes. This means that the cylinder liner is protected by supply of cylinder lube oil at a higher feedrate during the short periods, where this is necessary.
Yes, the BHP and the LCD regulations can with advantage be applied together. Each in their own way contributes to obtain an optimal cylinder lubrication on the engine.
The LCD actuator on the cylinder lubricator works on basis of signals received either from a governor or a control box connected to the fuel regulation shaft. At delivery, the signal is adjusted according to the engine designer’s guide lines.
However, some engines operate under conditions which are different from the average applied as basis for the calculation of these guide lines. Therefore, it is also possible to adjust the settings of the system individually. We recommend you to consult the relevant material for the control applied on your engine. In this way you can adjust the settings so they meet your requirements as to when increased extra lubrication is advisable.
This is easily done, even when the engine is not running. However, following conditions must be fulfilled:
a) The fuel regulation shaft can be turned
b) The handle for joint quantity adjustment is set to position minus (-), or
c) The LCD- actuator is locked with both handles in 0-position
Then measure the stroke length on the cylinder lubricator at different fuel pump index levels and compare to the regulation curve in the cylinder lubricator manual. If you measure at fuel pump indexes from 100% load and downwards, the largest stroke length must be measured at 100% and gradually reduced until it becomes stable at low load levels.