Skip to main content

Motor and Mep

12th April

Pratishtha Bhawan

Motor
Rtflex fuel injection (full xplain , from fuel p/p to injector)
Rtflex advantages
Tribo pack technology
Boiler safety v/v type onboard , different types of safety v/v and difference between high lift and improved high lift
Thin shell bearing (explain full)
Types of sewage treatment plants?

Mep
Stuffing box purpose? How will u know if it performing okay? Then said explain full construction. Can we remove stuffing box with piston in place? If yes , how?
Aux engine main bearing dismantling procedure.
Radial clearance explain and how to take..if more what it signifies?
Crankpin ovality . How to check? Limits? What to do if ovality found?
Liner calibration. How to check ? Ovality  limits?

Decider
Aux engine crankcase inspection ( liner me kya kya check kroge)
Why we do boiler water tests onboard? How will chloride increase?

Result -- COC😍

Comments

Popular posts from this blog

Wire drawing effect

Wire drawing effect : It is erosion or scoring of valve seat and disc material of the valve . Causes : 1. Due to differential pressure across the valve . 2. Thermal and mechanical damages . Effects : Valve is unable to isolate the line and fails in sealing . Gas and liquid will leak from the wire and scratch like groove .

Cross and loop scavenging Disadvantage

Cross scavenging Disadvantage 1. It requires longer  piston skirt to prevent exhaust gas and air leaks from the ports when piston is at TDC . Loop scavenging Disadvantage 1. Both exhaust port and scavenge port are at the adjacent side of the liner which causes temperature differential problem for the liner material . Hence , we are using mostly the uniflow scavenging which is having very lesser mixing and better scavenging efficiency. Source : DA Taylor