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Parami METC: Alpha Lubricator Alpha ACC

The document discusses the working principles of two lubricator systems: the Alpha Lubricator and the mechanical lubricator. The Alpha Lubricator uses a pump unit to supply oil at 40-50 bar pressure to injectors controlled by a master control unit. Timing is based on encoder signals and injection frequency depends on engine speed. The mechanical lubricator uses timed injection controlled by crank angle. Safety features of the Alpha Lubricator include filters, pressure monitoring, temperature alarms, and a backup control unit. Methods for measuring and adjusting cylinder oil consumption are also described.

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Htet Wai Yan Aung
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742 views5 pages

Parami METC: Alpha Lubricator Alpha ACC

The document discusses the working principles of two lubricator systems: the Alpha Lubricator and the mechanical lubricator. The Alpha Lubricator uses a pump unit to supply oil at 40-50 bar pressure to injectors controlled by a master control unit. Timing is based on encoder signals and injection frequency depends on engine speed. The mechanical lubricator uses timed injection controlled by crank angle. Safety features of the Alpha Lubricator include filters, pressure monitoring, temperature alarms, and a backup control unit. Methods for measuring and adjusting cylinder oil consumption are also described.

Uploaded by

Htet Wai Yan Aung
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Parami METC 17TH JUL.

2018

Alpha Lubricator Alpha ACC

Sayar Phone (Parami )

Working Principle Cylinder Lubricator Working Principle Lubricator

Lubricator Encoder ALCU

HMI

Pump Unit Load Transmitter


ALCU

HMI Pump Unit


Back up Trigger

Working Principle Working Principle

Sayar Phone (Parami)


09 7931 24433 / 09 7731 24433
Parami METC 17TH JUL. 2018

Working Principle Working principle


§The pump unit supplies the with 40-50 bar oil pressure.
§The oil injection by activating a solenoid.
§A feedback signal from lubricator indicates that oil injection has taken
place.
§This is shown by LEDs on intermediate boxes for each cylinder.

Pump Unit

Working principle Working principle


§Timing is based on two signals from the angle encoder, and pick up § The injection frequency is calculated from index and speed, and is normally
trigger. proportional to the engine MEP.
§Normally timed to inject oil into the piston ring pack during the § A power Mode or RPM mode is possible.
compression stroke.
§ The oil feed rate at MCR (100%) is calculated as between a number of injections
§The feed is based on a constant amount of oil being supplied per
injection. / rpm and the stroke of the lubricators.

§The specific feed rate is controlled by variation of the injection § HMI adjustment of lubrication feed rate for individual cylinders is possible
frequency. between 60% and 200%.
Cylinder Lubricator
Encoder
Back up Trigger

Working principle Mechanical Lubricator


§ During normal operation the system is controlled by the MCU.
§ In the event of system failure, a common alarm is activated in the control room.
§ The detailed alarm reference is displayed on the HMI panel.
§ If a critical failure in the MCU is detected, the BCU automatically takes over
(control switch must be in “auto” position).
§ BCU set normally feed rate for the engine, plus 50%.

Sayar Phone (Parami)


09 7931 24433 / 09 7731 24433
Parami METC 17TH JUL. 2018

Mechanical Lubricator Mechanical Lubricator Principle

Mechanical Lubricator Air Purging from Tank

Air Purging from Pump Measuring Consumption

Sayar Phone (Parami)


09 7931 24433 / 09 7731 24433
Parami METC 17TH JUL. 2018

Adjusting Stroke Pump Stroke

Re-adjust Zero stroke Mechanical Lubricator

Retrofit Alpha Retrofit Alpha

Sayar Phone (Parami)


09 7931 24433 / 09 7731 24433
Parami METC 17TH JUL. 2018

Retrofit Alpha Safety devices of Alpha Lubricator


§ Filters on low pressure suction side and high pressure side for each unit.

§ Pressure gauges.

§ Pressure drop indicator and low pressure alarm.

§ Oil heater with high and low temperature alarm.

§ Lamp and starting stand-by pump system.

§ Feed back sensor.

§ Backup control unit (BCU) in the event of Master control unit (MCU) failure.

§ Trigger signal failure from en-coader.

Cylnder Oil Measure Cylinder Oil

Cylinder Oil Cylinder Oil

Sayar Phone (Parami)


09 7931 24433 / 09 7731 24433

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