Outboard engine charging circuit question

[shanemax]

HFO or heavy fuel oil is what is left over after refining/ cracking and is the most popular with container ships due to its cost and does need heating to flow. You are thinking of ships that run around Europe that have to conform to EU standards Please visit web site MARINE PAGE and their section on marine fuels

 

[shanemax]

The latest figures I found for 2021 was that container ships use 93% Heavy and 7% distillate.

 

[shanemax]

Back to the Mercury 5hp engine charging. Force Four Chandlery say on their web page that the engine is good for 4amps worth of lights or two amps charging a battery. That does not make sense unless some technical sparky on here knows why.

 

[Refueler]

HFO or heavy fuel oil is what is left over after refining/ cracking and is the most popular with container ships due to its cost and does need heating to flow. You are thinking of ships that run around Europe that have to conform to EU standards Please visit web site MARINE PAGE and their section on marine fuels

Please stop now before you dig hole deeper.

I don't need to go to Marine Page .. not do I need a lesson on history of ships fuels.

HFO is NOT just left over from refining ... in fact its a few steps up from whats left over. You have various residuals and Bitumen below HFO.
Second - HFO does need heating to be used as fuel ... pour point usually around the 30C mark ... if at 380 spec ...

It is virtually universal now that Low Sulphur Fuel Oil is used - basically because its difficult for a ship - its ALL ships - to split Bunker fuel tanks into various ... they already have MDO / MGO (Diesel) and HFO tankage.

Container ships are quite often Gas Oil burners ... depending on size.

As to areas ... you think EU is only area ??? What about Malaysia, Indonesia, Singapore, Japan, China, Australia, USA as examples ??

For some years now - my business has had to deal with the change over of fuel specs ... sourcing and making sure it complies.

 

[Refueler]

The latest figures I found for 2021 was that container ships use 93% Heavy and 7% distillate.

Oh Dear ... you really do not give up do you ...

ALL Petroleum refinery fractions are Distillates ...

Light Distillates are such as Naphtha, Gasoline
Middle Distillates are such as Gas Oil
Heavy Distillates are such as FO, HFO

Then you get Residuals.

The % you show are not mixes ... it was common ... and as long as Low Sulphur spec - still common for a ship (its not just Container Ships) to burn HFO on open sea passage where no engine manoeuvring is called for ... change to Gas Oil when approaching ports and for manoeuvring.


Suggest you go back to the subject of the thread .....

 

[shanemax]

The largest container ship in the world and her sister ships
MAERSK EMMA She is powered by a Warrsila-Sulzer14RTFLEX96-C engine, the worlds largest single diesel unit, weighing
2300 tons 109000hp She burns109000 litres of HEAVY FUEL OIL per hour She has features to lower environmental damage.
I am not digging a hole but go by well documented sites. I got this info from the Maersk site. I did not literally mean what is left over after cracking as I understand that there is the stuff that goes on the road but its is pretty way down the fractionating column and what these ships burn is pretty nasty stuff and judging by the pictures available when they are along way off land I think costs are considered rather than the environment

 

[shanemax]

Oh Dear ... you really do not give up do you ...

ALL Petroleum refinery fractions are Distillates ...

Light Distillates are such as Naphtha, Gasoline
Middle Distillates are such as Gas Oil
Heavy Distillates are such as FO, HFO

Then you get Residuals.

The % you show are not mixes ... it was common ... and as long as Low Sulphur spec - still common for a ship (its not just Container Ships) to burn HFO on open sea passage where no engine manoeuvring is called for ... change to Gas Oil when approaching ports and for manoeuvring.


Suggest you go back to the subject of the thread .....

OK........ I think you are right, we digresses off the subject, do you think if adjusted correctly you could get the Mercury 5hp to run on HFO and would it then produce more amps from the engine.

 

[shanemax]

Oh and by the way i worked for Shell and a company that bought all the waxes off Shell. In fact the company that bought all the waxes was owned by Shell, as Shell thought this was cost effective and efficient. I expect it has all changed by now.

 

[PaulRainbow]

 

[shanemax]

View attachment 162857

Hi Its called debate.

 

[billskip]

Hi Its called debate.

I love these challenges of belief....sometimes knowledge enters the affray

 

[LiftyK]

Thank you all for your replies. My friend has looked through them all and is planning his next move. Much appreciated!
I will report on progress once he has tried a few things.

 

[Mister E]

I recommend that he doesn't use heavy oil.

 

[billskip]

I recommend that he doesn't use heavy oil.

Or heavy water

 

[William_H]

Back to the Mercury 5hp engine charging. Force Four Chandlery say on their web page that the engine is good for 4amps worth of lights or two amps charging a battery. That does not make sense unless some technical sparky on here knows why.

I would think that the voltage produced by the pick up coil is dependent on RPM. Now incandescent bulbs will draw current and produce some light at quite low voltages. A linear current to voltage rate. But charging a battery requires a very finite voltage above the existing voltage (statye of charge but around 13+volts) of the battery to push current in. (less than that nothing) Then you need even more voltage to increase the charge current. Perhaps unable to provide enough voltage for any more charge current than 2A even at full RPM. That is my theory assuming charging circuit is simple like old O/Bs.