The DK-20 is the latest doctor portable diesel engine analyser from Icon Research. For over twenty years the DK-2 set the standard for understanding and improving marine and power plant diesel engine performance. Now the DK-20 has raised the bar even higher with improved ease of use, portability and measurement accuracy. Its smaller size, colour touch panel display, 0.1⁰ resolution accuracy and drag-and-drop measurement transfer continues to make it the system of choice for many marine and on-shore diesel engine users.
Taking readings couldn’t be easier – just select the engine, connect up and press GO. Move the pressure sensor to the next cylinder and press GO again for the next reading. The DK-20 performs tests to ensure the correct cylinder is connected and the pressure sensor and pickups are providing valid readings.
Transferring the readings to the PC is easy too. With the auto-connect facility, a whole engine’s readings are transferred in a single operation. The Doctor portable instrument appears as a window from which test data can simply be “dragged “to the PC.
All systems interface to the same highly regarded PC analysis software.
To ensure the highest accuracy, especially for calculated power, only the highest quality sensors and pickups are used. The pressure sensors have high temperature resistance and a long and stable operating life. The same accessories can be used on both the older DK-2 instruments and the new DK-20.
Twin inductive crank pickups eliminate the effects of speed variation for the highest accuracy on main engines.
Single inductive crank pickups give an economical oil and dirt immune system for generators and auxiliary engines. Optical crank pickups can be moved from engine to engine for full portability.
To assist initial set-up of the software, a ‘database set-up’ service is available. When this option is selected, the DK-20 is delivered programmed with the engine information for the intended vessel. As soon as installation is complete readings can be taken.
A customised logbook is provided with the software (either downloadable or via USB flash key) which ensures results can be easily downloaded immediately after tests are run. Initial results are then emailed back to Icon for review, comment and trigger angle correction.
Installation is very straight-forward and is carried out by the ship crew. All cables and junction boxes are provided by Icon Research along with a detailed installation guide on how and where to position pick-ups.
Icon Research released brand new version 6 software in 2014 and this has been continually upgraded with powerful new features. The programme of ongoing development has ensured that the software continues to lead the field.
The software enables fleet-wide engine comparisons to be carried out at the click of a button. Features such as Shop & Sea Trial comparisons, standard or customised engine reports and the comprehensive analysis features for which the Doctor software is renowned have combined to make if first choice for thousands of diesel engine operators.
The software can be downloaded or provided on a USB key along with a guide to enable the operator to quickly familiarise himself with the application. The intuitive nature of the functions makes the learning process even easier. The software is supplied with a suite of sample engine measurements to experiment with. There is no restriction on the number of computers that the software can be used on, so engine measurements can be freely passed between operators, analysts and managers. Any standard desktop or laptop PC with Windows™ 7 or 10 can be used.
First of all, a library is created for the vessel or power plant. Settings such as engine geometry and firing order are entered here. An unlimited number of configurations can be stored for later use. The configuration storage is flexible and allows multiple ships or plants each to have multiple engines in the same library, or alternatively any number of separate libraries can be used. A setup service is available with all new systems from Icon, giving users a flying start and including a check on initial results.
Measurements are downloaded via the computer’s USB interface port and stored in the Doctor library.
Sections of the library known as logbooks can be imported or exported easily to colleagues anywhere in the world for further analysis or comparative work. These logbooks are easily combined with a master library in the head office, using click and drag operations.
The basic traces that can be observed are Pressure-Angle, Pressure-Volume and Derivative (Rate of Pressure Rise). From these traces, various parameters are derived such as power, MIP, rate of pressure rise, and many others. In addition, user-defined variables can be entered, such as exhaust gas temperature. These values can be shown in tabular form for easy comparison. Variations are automatically calculated, such as variation in power between cylinders.
Cursor readouts are available on single or multiple traces. When more than one trace is displayed, the cursor will show the data on all curves at that position together with the maximum deviation from lowest to highest.
Multiple engine selections can be made, and you can look at similar engines from different vessels all at the same time. This is an invaluable tool for the management of fleets of vessels.
Now propeller curve analysis and shop and sea trial comparisons are included in the software.
Hardcopy printouts are available at the touch of a button. You can download the Doctor Analysis Software by registering here. A demo version is available for evaluation. A license can be purchased to allow activation of the software.
Diagnostics and Analysis
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