WORKFLOW PARAMETERS THAT ARE DEFINED | PMI SYSTEM | DEPAS 4.0, 5.0 |
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Pressure sensor | • | • |
Pressure diagram vs crank angle (time) vs volume | • | • |
Basic working process parameters: Revolution (RPM), Pmax (mean, max, min), Pcomp, Pignition, IMEP, IPower, Pexh | • | • |
Derivative pressure diagram | • | |
Vibro sensor | • | |
Vibro diagrams analysis | • | |
Fuel injection timing (fuel injection advance angle and phase duration) | • | |
Diagnostics of technical condition of injection equipment | • | |
Valve timing angles | • | |
Diagnostics of the technical condition of the gas distribution mechanism | • | |
FFT spectrum, wavelet | • | |
Turbocharger analysis | • | |
TDC determination | TDC-sensor | Software |
PMI SYSTEM | DEPAS 4.0, 5.0 | ||
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Periodic diagnostics of the technical condition of the cylinder-piston group, high-pressure fuel equipment and valve timing mechanism allows for timely detection and elimination of defects that negatively affect the efficiency and stability of the working process and the quality of fuel combustion in the cylinders. Timely elimination of defects, restoration of the actual compression ratio, optimization of fuel timing and valve timing ensure an increase in the working cycle power without increasing the fuel supply, promote more complete combustion and, as a result, a decrease in specific fuel consumption at a given load.
SFC – specific effective fuel consumption, g/kWh; Gh – mass fuel consumption, kg/h; Pe – effective engine power, kW; QH – lower heating value of fuel, kJ/kg (for example, for MDO ≈ 42700 kJ/kg); η – engine efficiency (~0.45–0.54 for modern two-stroke diesel engines).
In addition, regular maintenance checks significantly reduce the risk of emergency situations, including sudden loss of power, engine failures and blackouts, which can lead to the vessel being stopped at sea. Although such events are difficult to calculate accurately, their prevention is critical for the safety of the vessel and crew, and also allows the shipowner to avoid significant financial losses associated with emergency repairs, delays and reputational risks.
Thus, the implementation of a system of regular parametric diagnostics of the working process of marine engines including the main systems, is a means of increasing fuel efficiency and an important element of the overall strategy for managing the operational reliability and safety of a marine vessel.
To the student,
to the lecturer,
to the working mechanic.
In 2024, the department completed work on a new textbook for training marine engineers at the level of operation and management entitled “Internal combustion engines of modern marine vessels”.
The book most fully reflects the current level of development of marine piston engines and the prospects for their further development. It is illustrated with more than 500 high-quality color and black-and-white drawings, which allows you to assimilate the educational material as effectively as possible. The book can be useful for both students and teachers of higher maritime educational institutions, as well as current marine engineers, graduate students and everyone interested in this branch of knowledge.
You can briefly familiarize yourself with the contents of the textbook by downloading the file attached below. You can learn more about the new textbook by contacting the head of the authors’ team, professor of the Department of Marine Power Plants and Technical Operation of the Odessa National Maritime University, Doctor of Technical Sciences, Professor Ievgeniy Bilousov, by e-mail ewbelousov67@gmail.com.
Студенту,
викладачеві,
чинному механіку.
У 2024 році на кафедрі було завершено роботу над новим підручником для підготовки суднових механіків на рівні експлуатації та управління під назвою «Internal combustion engines of modern marine vessels».
Книга найбільш повно відображає сучасний рівень розвитку суднових поршневих двигунів та перспективи їх подальшого розвитку. Вона проілюстрована більш ніж 500 високоякісними кольоровими та чорно-білими рисунками, що дозволяє максимально ефективно засвоїти навчальний матеріал. Книга може бути корисна як студентам і викладачам вищих морських навчальних закладів, так і діючим судновим механікам, аспірантам і всім, хто цікавиться цією галуззю знань.
Коротко ознайомитися зі змістом підручника можна, завантаживши прикріплений нижче файл. Більш детально дізнатися про новий підручник можна, зв’язавшись з керівником авторського колективу, професором кафедри Суднових енергетичних установок та технічної експлуатації Одеського національного морського університету, д.т.н., проф. Євгеном Білоусовим, електронною поштою ewbelousov67@gmail.com.