Hans Jensen Lubricators A/S - 100 years

HJ Mechtronic

 

Why choose HJ Mechtronic

HJ Mechtronic is an electronic regulation unit, which can be retrofitted on existing mechanical lubricators, and thus make possible a load dependent cylinder lubrication. This provides advantages in the form of automatic regulation of cylinder oil consumption, improved cylinder conditions, as well as obviously electronic flexibility in the control. Finally, HJ Mechtronic is a very simple retrofit installation, which is very appropriate for slow steaming.

Background

Hans Jensen Lubricators A/S has, based on the well known Hans Jensen mechanical cylinder lubrication systems and the increasing demands on the market for flexibility and possibility of electronic control, chosen to work with an electronic regulation, which steplessly adjusts the cylinder lube oil quantity supplied to the cylinder.

Functionality

HJ Mechtronic can be specified for newbuildings and furthermore be retrofitted on an existing HJ Mechanical Cylinder Lubricator. The module being mounted contains a series of magnetic valves which are controlled by an electronic control unit. The electronic control unit makes it possible to control the cylinder lube oil quantity for each cylinder lubrication valve.

Optional Features

HJ Mechtronic is delivered as a complete system with the option for customers to add features based on their needs. Optional features include:

  • Automatic regulation according to sulphur in Heavy Fuel Oil
  • Individual alarm setup
  • Total flowmeter with software integration

Flexibility

The electronic control unit in HJ Mechtronic makes it possible to control the cylinder lube oil quantity at each piston stroke.The regulation permits the application of known algorithms such as MEP and BHP regulation, but the customer can also define his own algorithms.

This makes it possible to obtain better operation conditions for the cylinder, and savings in the cylinder lube oil consumption, especially on engines operating in the part load area.

The system can furthermore be combined with HJ SIP Lubrication to obtain further savings.You are welcome to contact us for further information on HJ Mechtronic.

See an animation of the HJ Mechtronic functionality here
 
Read more about HJ Mechanical Cylinder Lubricators. Click here
 
Read more about MEP-regulation. Click here
 
Read more about BHP-regulation. Click here
 
Read more about HJ SIP Valves. Click here

Purpose

HJ Mechtronic offers the implementation of electronic regulation of the cylinder lube oil on HJ Mechanical Cylinder Lubricators. The system is controlled for the entire engine or for each individual cylinder according to well known or customer defined regulation algorithms. This gives an increased flexibility with the possibility of optimising the cylinder lubrication and reducing the cylinder lube oil consumption.

System description

In order to apply HJ Mechtronic, an independent module is mounted directly on an existing HJ Mechanical Cylinder Lubricator. The installation is simple and is possible on both newbuildings and as retrofit on existing cylinder lubricators.

This module contains magnetic valves for each cylinder lube point, which can lead the cylinder lube oil from one or more lube points back to the cylinder lubricator. In this way, the entire quantity of cylinder lube oil being pumped to the cylinder liner is controlled. The magnetic valves are controlled by an electronic control unit which is operated from a computer.

The control units make calculations of all operations. The calculations are made based on signals which the control unit receives from a series of units mounted on the engine, in order to, among other things, detect the engine rpm, actual output and similar.

Design of module

The module is mounted on the existing pump block. During operation, the cam shaft operates the pump piston in the cylinder lubricator. When the cylinder lube oil is pumped into the chamber in front of the piston, the magnetic valve is activated. A magnetic valve for each cylinder lube point is mounted. When the magnetic valve is activated, it leads the cylinder lube oil through the module and back to the cylinder lubricator instead of to the valve. When the regulation is complete, the magnetic valve is released, whereby the cylinder lube oil is supplied to the valve again.

Flexibility

HJ Mechtronic is controlled by an electronic control unit, which makes it possible to control the cylinder lube oil quantity supplied at each piston stroke. The supplied software makes it possible to apply known algorithms such as MEP and BHP or algorithms defined by the customer. This makes it possible to obtain better operation conditions and savings in the cylinder lube oil consumption, especially on engines operating in the part load area.

You are welcome to contact us for more information on HJ Mechtronic.

Read more about HJ Mechanical Cylinder Lubricators. Click here  

Read more about MEP-regulation. Click here

Read more about BHP-regulation. Click here

There is very little maintenance on HJ Mechtronic. The system is build to test itself, and inform of possible errors.

On this page you can find replies to a series of questions, which we are frequently asked regarding HJ Mectronic. 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.

  • What are the characteristics of HJ Mechtronic?
    • HJ Mechtronic is a module which makes it possible to apply electronic regulation of the cylinder lube oil quantity supplied at each piston stroke on a HJ Mechanical Cylinder Lubricator.

  • Can HJ Mechtronic be retrofitted?
    • Yes, HJ Mechtronic can relatively easily be retrofitted on an existing HJ Mechanical Cylinder Lubricator.

  • How is HJ Mechtronic operated?
    • HJ Mechtronic can be controlled by a computer by means of the supplied software which is developed by Hans Jensen Lubricators A/S.

      The software is programmed with engine specific information at delivery. During operation, the software is applied to control the regulation of the cylinder lube oil, either by means of known algorithms such as MEP and BHP or algorithms defined by the customer.

      The regulation can be controlled for the entire engine or for each individual cylinder with a stepless stroke length adjustment and timing.

      The actual operation can be seen on the computer monitor.

  • Is HJ Mechtronic just as reliable as a HJ Mechanical Cylinder Lubricator?
    • Yes, HJ Mechtronic is developed with high focus on reliability and has been tested for many thousands of operation hours. In HJ Mechtronic, redundance on the electric key components has been included, such as double circuits, processors and power supplies in order to ensure high reliability. The back-up system automatically starts up in case of signal errors or similar.
      If, however, HJ Mechtronic should loose power, the mechanical lubricator will function exactly as it did prior to the installation of the control.

  • Can HJ Mechtronic be applied without HJ SIP Cylinder Lubrication?
    • It is in principle possible to apply HJ Mechtronic without HJ SIP Cylinder Lubrication. This, however, means that the full potential of the electronic control is not obtained. Together with HJ SIP Cylinder Lubrication, HJ Mechtronic offers good possibilities for optimising the cylinder lubrication and reducing the operation costs.

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