Let’s look at some of the engine parameters first. In the following screens try to spot abnormalities in mechanical, scavenging and fuel oil systems. Conclusion: Pcom is the same, no problem in liner, piston ring mechanical condition. Peak pressure is lower. Maximum injecion pressure (PINJM) is lower than normal, indicating probelm in fuel injection system. […]
Part A class schedule – October 2021 Session Part A class schedule emailed by Choon Ming Lim. Those who have registered for tutorial classes can find this helpful.
Type of engine: MAN B&W MC90V (VLCC) Fault: Early Injection Timing M/E Turbocharger System diagram ME Cylinder no-1 diagram with parameters (Faulty unit) ME Cylinder no-2 diagram with parameters (Without fault) ME Piston RIng Monitor Diagram (Unit no-1) ME Piston RIng Monitor Diagram (Unit no-2) Cylinder Indicator Diagram – Pressure/Angle Cylinder no-1 -> Pink (abnormal) […]
These materials are downloaded from PolyMall during October 2021 Session. Use the password: ” shipsengine “
Fault Finding and Action Plan Short Term Action Plan Continuous monitoring of engine parameters Keep a close watch Reduce engine speed ( reduce 1 RPM in 2 minutes period of time) Max RPM within the limit of exhaust temperature deviation Long Term Action Plan Stop -> Replace -> Repair Stopping Procedure of large two stroke […]
Given below is a bunker fuel analysis report with ref to each parameter of this report: Explain the consequence of using this fuel What engine adjustment and fuel treatment required for safe operation? Does this fuel satisfy IMO regulation? Answer: (a) +(b) (a + b), Consequences & Adjustments to use the fuel Density: • The […]
Given below is medium speed trunk type main engine system oil analysis report, with reference to each parameters of this report- a) Is there sufficient additive reserve in circulation oil to protect the engine? b) Analyze the condition of this oil from used oil test results for each parameter by comparing with SAE30 new oil […]
With reference to engine system oil-a) Discuss four contaminants commonly found in engine system oil and their adverse effect of function of oil. b) Source of these contaminants and how they detected. c) Corrective measures to be taken in case of contamination with contaminants identified in (a) a. Contaminants commonly found in engine system oil: […]
a. Describe with the aid of sketches, an automatic self‑desludging centrifuge suitable for dealing with system oil of an auxiliary engine operating on heavy fuel oil. b. If the purifier is continuously discharging sludge from the heavy liquid outlet, discuss the reasons and suitable corrective measures. c. Explain how the feed rate, separation temperature and gravity disc […]
a. With suitable sketch & describe the operation of a large starting air v/v.b. Explain main causes of starting air line explosion.c. Discuss how explosion can be avoided.d. During maneuvering if starting air line explosion occurs what action will you take?e. What are some indication fire in starting air line?f. How do you check the […]