Marine fuel injectors are critical components of an engine’s fuel delivery system, responsible for precisely atomizing fuel and delivering it to the combustion chamber. Over time, these injectors can become clogged, worn, or develop leaks, resulting in decreased engine performance, reduced fuel efficiency, and potential engine damage. In this blog article, we will explore the…
At all engine loads, the purpose of the diesel engine fuel system is to deliver the correct amount of fuel, at the correct time, to the correct cylinder in the required condition and as a result, the system must be capable of controlling the quantity, timing, period, and sequence of delivery. There must also be control…
Modern massive two-stroke marine engines with fixed pitch propellers that are directly connected must be reversed, that is, the engine’s rotational direction must be changed to drive the ship ahead and astern. This is generally necessary during ship maneuvering, such as berthing, passing through canals, lock gates, and anchoring, among other things. I have received…
This post is written on demand from one of my fellow engineer, as he requested a proper explanation of what exactly the common rail system is it and, its impact and how it works. The following explanation is based on the main marine engines manufacturer’s released information about their development and research on this subject….
Positive displacement pumps also known as volumetric pumps are very common and they are mainly used for high viscous fluids transfer, like fuel, oil and sludge. Gear pumps, reciprocating pumps, rotary displacement and vane pumps are the most known and common used onboard vessels. In these above pumps a special form allows an almost tight…
A while ago we have experienced frequent black outs due one of the vessel’s generators trip while running on load. The generator used to trip if load went more than 50 % while was running as a single generator and especially when a large consumer starts when the generator was close to 50 % load….
VIT or Variable Injection Timing is a form of fuel pump control, enabling an engine to operate with the designated maximum cylinder firing or combustion pressure from approximately 75% power output to maximum power. This improves thermal efficiency and lowers fuel consumption. The fuel consumption for an engine at any load will be related to…