Search found 60 matches

Go to advanced search

by Pengze
Thu Jul 23, 2015 3:36 am
Forum: The Workshop
Topic: Diesel engine Overspeed
Replies: 19
Views: 2012

Diesel engine Overspeed

Why does a 4-stroke diesel engine Overspeed ?
Would appreciate your professional comments.
Thank you.
by Pengze
Mon Sep 08, 2014 7:23 pm
Forum: The Workshop
Topic: Rudder Stock dropped
Replies: 3
Views: 973

Re: Rudder Stock dropped

Dear Sir,
1.We are currently using the cylindrical roller bearing (23052 CC/W33) for the rudder carrier, any different with Pallister bearing ?
2.Would appreciate yr elaborate clarification about the framework below the Rudder ?
3.Our current jumping collar clearance is abt 10mm, is it okay ?
by Pengze
Sun Sep 07, 2014 8:27 pm
Forum: The Workshop
Topic: Rudder Stock dropped
Replies: 3
Views: 973

Rudder Stock dropped

Dear Sirs,
Would appreciate to advise what are the probable causes that could affect the Rudder Stock to drop down a few centimetres from its original position ?
The Rudder is of the semi-balance type.
The ship had been operating for about 3 years.
Hereby extend my thanks for yr kind response.
by Pengze
Fri Nov 23, 2012 11:40 pm
Forum: The Workshop
Topic: SEEMP Manual for Office & Vessel
Replies: 2
Views: 2694

SEEMP Manual for Office & Vessel

Hi there, Since the SEEMP would be enforced on 01st Jan 2013, every vessel would need to have on board a copy of the SEEMP. Would appreciate if anyone out there have a practical sample of the SEEMP for our guidance to implement and establish a copy for the vessel to use. SEEMP (Ship Energy Efficienc...
by Pengze
Fri Nov 23, 2012 11:31 pm
Forum: The Workshop
Topic: Location of Air Intake Manifold
Replies: 4
Views: 3037

Re: Location of Air Intake Manifold

Dear Sirs, Firstly, the Japanese maker's service engineer did visited us in our office to discuss some problems but disappointed to say that they are not that helpful as some questions are still unanswered till today. He suggested us to consult with the China maker (under license from Japan) for fol...
by Pengze
Fri Nov 16, 2012 11:33 pm
Forum: The Workshop
Topic: Location of Air Intake Manifold
Replies: 4
Views: 3037

Location of Air Intake Manifold

Air intake manifold.pdf Dear Gentlemen, As per attached drawing, could anyone out there provide valuable comment regarding the location & positioning of the air intake manifold for a 4-stroke medium speed diesel engine.? We are operating near the equator and with a seawater temperature of 32 de...
by Pengze
Mon Nov 12, 2012 8:27 pm
Forum: The Workshop
Topic: Fridge Problem
Replies: 9
Views: 5215

Re: Fridge Problem

Dear Sir,
What is this mechanical back pressure valve fitted after the evaporator ?
Any photo of the valve will help.
Thanks.
by Pengze
Mon Nov 12, 2012 7:35 am
Forum: The Workshop
Topic: new picture
Replies: 6
Views: 3911

Re: new picture

Dear Sir, If I may correct, you mean to say Stainless steel bolts & nuts for stainless steel components and not for mild steel components. What if we used stainless steel bolts & nuts for mild steel components and painted up, would that cause corrosion ? How about stainless steel bolts &...
by Pengze
Mon Nov 12, 2012 7:20 am
Forum: The Workshop
Topic: Main Engine High Exhaust Temperatures
Replies: 7
Views: 9052

Re: Main Engine High Exhaust Temperatures

Dear Sir,
For the Hull conditions, we could not determine.
I wonder if the propeller is entangled with fishing nets and ropes will cause the exhaust temperatures to rise substantially.
by Pengze
Sun Nov 11, 2012 4:30 am
Forum: The Workshop
Topic: Main Engine High Exhaust Temperatures
Replies: 7
Views: 9052

Main Engine High Exhaust Temperatures

Dear Sir, For a 4-stroke diesel medium speed engine operating on 180cst, the remedial works were carried out as below but we still encounter high exhaust temperatures on all units, anybody out there would like to share & advise for troubleshooting:- 1. All cylinder heads were overhauled & re...
by Pengze
Sun Nov 11, 2012 3:53 am
Forum: The Workshop
Topic: new picture
Replies: 6
Views: 3911

Re: new picture

Dear Sir, All the while, usually when we encountered rusted & corroded mild steel bolts & nuts, we will replaced with stainless steel or galvanised bolts & nuts especially where the seawater is in contact / in the vicinity / exposed to the surrounding sea conditions. Pls advise if this i...
by Pengze
Sun Nov 11, 2012 3:35 am
Forum: The Workshop
Topic: Caterpillar engine high exhaust back pressure
Replies: 19
Views: 13576

Re: Caterpillar engine high exhaust back pressure

Dear Sir, Once again , thank you for yr valuable info. In addition to that, would appreciate to clarify the following points:- 1. By looking /reading at the vertical difference in height of the water column in the U-tube, how can we know / identify that the exhaust back pressure is high / abnormal ?...
by Pengze
Sat Nov 10, 2012 3:55 am
Forum: The Workshop
Topic: Caterpillar engine high exhaust back pressure
Replies: 19
Views: 13576

Re: Caterpillar engine high exhaust back pressure

Dear Sirs, Would like yr valuable advice & clarify on the following details? 1. If the exhaust back pressure is high, will this also reflect & indicate on the exhaust temperture showing high (after the turbocharger)? 2. If we do not have the U-Tube or other mechanism to record exhaust back p...
by Pengze
Fri Oct 26, 2012 4:59 am
Forum: The Workshop
Topic: Thermal oil boiler
Replies: 5
Views: 3146

Re: Thermal oil boiler

Good day Sir, Glad to receive some valuable tips from you. Thks. 1. To quote, "expansion tank should not be lagged", my understanding is that hot tank should be lagged for safety purposes , why is that so ? Unquote. 2. It looks like there won't be any safety valves on the boiler compared t...
by Pengze
Fri Oct 26, 2012 4:46 am
Forum: The Workshop
Topic: Advance timing for fuel pump
Replies: 11
Views: 15273

Re: Advance timing for fuel pump

Dear Sir, For a medium speed diesel engine like ours, we cannot take the Power/Draw Card to check the injection timing. We are using dial indicator gauge to only measure peak pressure. Just to clarify, 1. If the barrel & plunger is leaking, can we determine from the leak-off pipe attached at the...

Go to advanced search