Wear edge is formed in the top position of the upper piston ring when the cylinder liner is worn after many thousands of hours of service or from abnormal running conditions, such as scuffing or corrosion. With heavily worn cylinder liners, it is a necessity to remove the edge prior pulling out the piston, otherwise…
I believe that, not only once, you have noticed during engine performance check that the engine is running unbalanced with one unit running at low Pmax while others, depending on engine firing order, are trying to balance and compensate the low Pmax on that particular unit. As you may be aware, the first instinct is…
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…
Author – Daniel G. Teleoaca – Marine Chief Engineer Understanding the Scavenging Air System The turbocharger uses the exhaust gas from the engine to compress new air and charge the engine with a positive pressure higher than ambient conditions. Exhaust gas temperature convection and compression raises the temperature of the air and this cannot be…