Home |
Search |
Today's Posts |
|
#1
![]()
posted to rec.boats.cruising
|
|||
|
|||
![]()
In article ,
Bruce in alaska wrote: In article , "Roger Long" wrote: Bruce in alaska wrote: I've run Diesel from 55USG Drums filled during WWII, with no problem, whatsoever. This stuff is over 50 years old, and makes power in my Gensets, just spiffy..... Interesting. Were those drums sealed all these years? I wonder if WWII diesel (different stuff than we have today) sealed into drums with the intention that it would be stored for a long time would give the same results as modern diesel that's been sitting in 3/4 to 1/2 full drums in the sun for a few weeks. My original comment about drums was really just shorthand for the reports I've received about poor fuel quality up in Newfoundland where the fishing restrictions have slowed sales to the point that stuff which is a long way down the supply chain anyway gets pretty funky. There were a few problems here in Maine this summer simply because the long hoses at some marinas would grow stuff when no one came along for days to buy due to the high prices earlier in the summer. Sealed Drums, filled in 1944 by the US Navy. Straight #2 Diesel, no addatives or other crap. My Tank Farm has 250K USG of Diesel #2, and 15K USG of Diesel #1 in it, and after a winter, we get less than 40 USG of water out of ALL 20 Tanks. Never had to treat ANY of the Diesel with Biocide, since we switched to receiving our fuel in 6000 USG Over-the-Road Tanks on a Freight Barge, rather than from the Fuel Barge with Sea Water Ballasting, and that was 20 years ago. I still keep a few of those Navy Surplus Drums of fuel around for emergencies, as it is KNOWN GOOD Fuel. RaCor filters are a wondrous thing, I use them exclusively, both for the Winter and Summer Powerhouses, as well as on the lines to the Fuel Dock. Never had a problem with ANY of the Diesel Fuel System. Now the Gasoline Stuff is a TOTALLY Different deal...... In article , Capt John wrote: On Nov 12, 2:46*pm, You wrote: In article , Martin Baxter wrote: Capt John wrote: Using more restrictive filters can cause problems with your supply pump, or, even worse, cause the engine to run lean. That will cause the engine to run hot and, over the long run, cause all kinds of other problems. Huh? Diesels do not run "lean". *Hint, think about you control power/speed in a diesel. Cheers Martin Just one of a few of Capt. John's misconceptions...... You need to study up a little, try asking your engine manufacturer about those filters. The marine specialist at HO Penn, our local Cat dealer on Long Island, was adamant about this. Said regardless of the engine manufacturer, they specify the 30 micron filters for a reason. Your probably more likely to get away with it with a little sail boat engine than a larger high output engine. For the price of a rebuild, or replacement, I'll take the manufacturers advice over your's and day of the week. Your ity bity KittyCAT Diesels don't even come close to the BIG YELLOW CAT's in my Summer PowerHouse. (2.8 MegaWatts worth) Our CAT Service Folks spec'd and installed MULTIPLE Racor 2020 10 Micron Primary Fuel Filters on the 4" fuel line that feeds the PowerHouse from the Tank Farm. The PowerHouse was Designed by Ed Wahl, one of CAT's most repected Power Generation Engineer dudes, who taught a whole Generation of CAT Field Service Folks how to do their JOBs, being the CAT Power Generation Engineering Instructor, in his later life. If your running your filters until the engine is getting "Starved for Fuel", and "running lean", then your and absolute Moroooooon, (Bugs Bunny Definition) as that would mean that there isn't enough fuel to fully fill the Injectors each time they fire, AND that also means that there would be NO fuel coming back thru the Fuel Return Line, AND consequently No Cooling of the Injector Tips, which is the Primary Reason for the Fuel Return Line, in the FIRST PLACE. Very Good way to BURN OUT the Injector Tips on your CATs, Sonny.... Just where did you learn your Diesel Engineering.... Dufus's R Us??? -- Bruce in alaska add path after fast to reply |
#2
![]()
posted to rec.boats.cruising
|
|||
|
|||
![]() "Bruce in alaska" wrote in message ... In article , Bruce in alaska wrote: In article , "Roger Long" wrote: Bruce in alaska wrote: I've run Diesel from 55USG Drums filled during WWII, with no problem, whatsoever. This stuff is over 50 years old, and makes power in my Gensets, just spiffy..... Interesting. Were those drums sealed all these years? I wonder if WWII diesel (different stuff than we have today) sealed into drums with the intention that it would be stored for a long time would give the same results as modern diesel that's been sitting in 3/4 to 1/2 full drums in the sun for a few weeks. My original comment about drums was really just shorthand for the reports I've received about poor fuel quality up in Newfoundland where the fishing restrictions have slowed sales to the point that stuff which is a long way down the supply chain anyway gets pretty funky. There were a few problems here in Maine this summer simply because the long hoses at some marinas would grow stuff when no one came along for days to buy due to the high prices earlier in the summer. Sealed Drums, filled in 1944 by the US Navy. Straight #2 Diesel, no addatives or other crap. My Tank Farm has 250K USG of Diesel #2, and 15K USG of Diesel #1 in it, and after a winter, we get less than 40 USG of water out of ALL 20 Tanks. Never had to treat ANY of the Diesel with Biocide, since we switched to receiving our fuel in 6000 USG Over-the-Road Tanks on a Freight Barge, rather than from the Fuel Barge with Sea Water Ballasting, and that was 20 years ago. I still keep a few of those Navy Surplus Drums of fuel around for emergencies, as it is KNOWN GOOD Fuel. RaCor filters are a wondrous thing, I use them exclusively, both for the Winter and Summer Powerhouses, as well as on the lines to the Fuel Dock. Never had a problem with ANY of the Diesel Fuel System. Now the Gasoline Stuff is a TOTALLY Different deal...... In article , Capt John wrote: On Nov 12, 2:46 pm, You wrote: In article , Martin Baxter wrote: Capt John wrote: Using more restrictive filters can cause problems with your supply pump, or, even worse, cause the engine to run lean. That will cause the engine to run hot and, over the long run, cause all kinds of other problems. Huh? Diesels do not run "lean". Hint, think about you control power/speed in a diesel. Cheers Martin Just one of a few of Capt. John's misconceptions...... You need to study up a little, try asking your engine manufacturer about those filters. The marine specialist at HO Penn, our local Cat dealer on Long Island, was adamant about this. Said regardless of the engine manufacturer, they specify the 30 micron filters for a reason. Your probably more likely to get away with it with a little sail boat engine than a larger high output engine. For the price of a rebuild, or replacement, I'll take the manufacturers advice over your's and day of the week. Your ity bity KittyCAT Diesels don't even come close to the BIG YELLOW CAT's in my Summer PowerHouse. (2.8 MegaWatts worth) Our CAT Service Folks spec'd and installed MULTIPLE Racor 2020 10 Micron Primary Fuel Filters on the 4" fuel line that feeds the PowerHouse from the Tank Farm. The PowerHouse was Designed by Ed Wahl, one of CAT's most repected Power Generation Engineer dudes, who taught a whole Generation of CAT Field Service Folks how to do their JOBs, being the CAT Power Generation Engineering Instructor, in his later life. If your running your filters until the engine is getting "Starved for Fuel", and "running lean", then your and absolute Moroooooon, (Bugs Bunny Definition) as that would mean that there isn't enough fuel to fully fill the Injectors each time they fire, AND that also means that there would be NO fuel coming back thru the Fuel Return Line, AND consequently No Cooling of the Injector Tips, which is the Primary Reason for the Fuel Return Line, in the FIRST PLACE. Very Good way to BURN OUT the Injector Tips on your CATs, Sonny.... Just where did you learn your Diesel Engineering.... Dufus's R Us??? You ain't the sharpest tool in the shed yourself, dude! What you say makes no sense. When you rev up a diesel it revs up because more fuel gets injected. Except at designed RPM all diesels burn learn. Only at designed RPM is the mixture optimal. Unless it's turbo or supercharged what determines the volume of air pushed into the cylinder by atmospheric pressure is the displacement of the piston therein. When you throttle down it loses rpms because you decrease the fuel supply - air supply remains a constant. You can't run it lean because if there is limited fuel then there is limited rpms. It self-adjusts. Get a clue, dude. -- Gregory Hall |
#3
![]()
posted to rec.boats.cruising
|
|||
|
|||
![]()
Bruce in alaska wrote in news:fast-835618.10442214112008
@netnews.worldnet.att.net: If your running your filters until the engine is getting "Starved for Fuel", and "running lean", then your and absolute Moroooooon, (Bugs Bunny Definition) as that would mean that there isn't enough fuel to fully fill the Injectors each time they fire, AND that also means that there would be NO fuel coming back thru the Fuel Return Line, AND consequently No Cooling of the Injector Tips, which is the Primary Reason for the Fuel Return Line, in the FIRST PLACE. Very Good way to BURN OUT the Injector Tips on your CATs, Sonny.... Just where did you learn your Diesel Engineering.... Dufus's R Us??? Huh? How the hell do you get it to idle?? The intake is either naturally aspirated or supercharged (4-stroke) and you STARVE IT OF FUEL TO MAKE IT SLOW DOWN! It's nearly starved to death at idle with just enough fire to turn it over.... ?????/ I'm not sure about your engine, but my engines regulate FUEL SUPPLY when I press down on the pedal or push the throttles forward...or aft. What kinda cooling does the injector tip require when there's so little fuel in ALL THAT COOL AIR the damned thing hardly fires at all?! You musta missed something. A diesel engine is one of the simplest machines ever built. http://www.youtube.com/watch?v=qU09jijFMiI See all the fire left over from this one running SO LEAN AT SLOW SPEED? You're looking right into the combustion chamber of a running ship engine. See any smoke?? Nope. It's so hot in there lube oil is dripping off all over the place.... Duhhh... |
#4
![]()
posted to rec.boats.cruising
|
|||
|
|||
![]()
On Nov 14, 2:44*pm, Bruce in alaska wrote:
In article , *Bruce in alaska wrote: In article , *"Roger Long" wrote: Bruce in alaska wrote: I've run Diesel from 55USG Drums filled during WWII, with no problem, whatsoever. This stuff is over 50 years old, and makes power in my Gensets, just spiffy..... Interesting. *Were those drums sealed all these years? *I wonder if *WWII diesel (different stuff than we have today) sealed into drums with the intention that it would be stored for a long time would give the same results as modern diesel that's been sitting in 3/4 to 1/2 full drums in the sun for a few weeks. My original comment about drums was really just shorthand for the reports I've received about poor fuel quality up in Newfoundland where the fishing restrictions have slowed sales to the point that stuff which is a long way down the supply chain anyway gets pretty funky. *There were a few problems here in Maine this summer simply because the long hoses at some marinas would grow stuff when no one came along for days to buy due to the high prices earlier in the summer. Sealed Drums, filled in 1944 by the US Navy. Straight #2 Diesel, no addatives or other crap. My Tank Farm has 250K USG of Diesel #2, and 15K USG of Diesel #1 in it, and after a winter, we get less than 40 USG of water out of ALL 20 Tanks. Never had to treat ANY of the Diesel with Biocide, since we switched to receiving our fuel in 6000 USG Over-the-Road Tanks on a Freight Barge, rather than from the Fuel Barge with Sea Water Ballasting, and that was 20 years ago. I still keep a few of those Navy Surplus Drums of fuel around for emergencies, as it is KNOWN GOOD Fuel. *RaCor filters are a wondrous thing, I use them exclusively, both for the Winter and Summer Powerhouses, as well as on the lines to the Fuel Dock. Never had a problem with ANY of the Diesel Fuel System. Now the Gasoline Stuff is a TOTALLY Different deal...... In article , *Capt John wrote: On Nov 12, 2:46*pm, You wrote: In article , Martin Baxter wrote: Capt John wrote: Using more restrictive filters can cause problems with your supply pump, or, even worse, cause the engine to run lean. That will cause the engine to run hot and, over the long run, cause all kinds of other problems. Huh? Diesels do not run "lean". *Hint, think about you control power/speed in a diesel. Cheers Martin Just one of a few of Capt. John's misconceptions...... You need to study up a little, try asking your engine manufacturer about those filters. The marine specialist at HO Penn, our local Cat dealer on Long Island, was adamant about this. Said regardless of the engine manufacturer, they specify the 30 micron filters for a reason. Your probably more likely to get away with it with a little sail boat engine than a larger high output engine. For the price of a rebuild, or replacement, I'll take the manufacturers advice over your's and day of the week. Your ity bity KittyCAT Diesels don't even come close to the BIG YELLOW CAT's in my Summer PowerHouse. (2.8 MegaWatts worth) Our CAT Service Folks spec'd and installed MULTIPLE Racor 2020 10 Micron Primary Fuel Filters on the 4" fuel line that feeds the PowerHouse from the Tank Farm. The PowerHouse was Designed by Ed Wahl, one of CAT's most repected Power Generation Engineer dudes, who taught a whole Generation of CAT Field Service Folks how to do their JOBs, being the CAT Power Generation Engineering Instructor, in his later life. If your running your filters until the engine is getting "Starved for Fuel", and "running lean", then your and absolute Moroooooon, (Bugs Bunny Definition) as that would mean that there isn't enough fuel to fully fill the Injectors each time they fire, AND that also means that there would be NO fuel coming back thru the Fuel Return Line, AND consequently No Cooling of the Injector Tips, which is the Primary Reason for the Fuel Return Line, in the FIRST PLACE. *Very Good way to BURN OUT the Injector Tips on your CATs, Sonny.... *Just where did you learn your Diesel Engineering.... Dufus's R Us??? -- Bruce in alaska add path after fast to reply- Hide quoted text - - Show quoted text -- Hide quoted text - - Show quoted text - Well Bruce, if I was starving the engine to the point that the injectors were no longer getting enough fuel to return any fuel via the return line then, you surely realize that their would be a very significant reduction in power output, to the point that the engine would stall. In your case, your talking about a generator, if you put an ammeter on the output of that generator you'll probably find that it's not really loaded up to full capacity, they rarely are, except when your starting electric motors. In our case, we're talking about boats, that's the reason for this being under rec.boats, and boat engines tend to be much more heavily loaded up than say a truck or a generator engine, that's why they rate generators with a constant load and intermittant load rating. In boats, what tends to happen is that the filters start to clog up while your running, over time. Some of the first signs of this are increased black smoke behind the boat (you see a haze, it's not like a building on fire), soot buildup on the transom around the exhaust, increased engine temperature and increased exhaust temperature. At some point, if allowed to go on, the engine begins to loose RPM's. Remenber, when you increase the throttle setting on a diesel your increasing the amount of fuel delivered to each cylinder and advancing the point where the fuel is injected. So when the fuel system is restricted the amount of fuel delivered per stroke drops slightly, but the advance doesn't change. Another symptom of a restricted fuel supply is if you've been up and running, and you have to slow down, for whatever reason, and then you try to come back up to speed, the engines will not come back up to the same RPM's as they were before. |
#5
![]()
posted to rec.boats.cruising
|
|||
|
|||
![]() "Capt John" wrote in message ... Well Bruce, if I was starving the engine to the point that the injectors were no longer getting enough fuel to return any fuel via the return line then, you surely realize that their would be a very significant reduction in power output, to the point that the engine would stall. In your case, your talking about a generator, if you put an ammeter on the output of that generator you'll probably find that it's not really loaded up to full capacity, they rarely are, except when your starting electric motors. In our case, we're talking about boats, that's the reason for this being under rec.boats, and boat engines tend to be much more heavily loaded up than say a truck or a generator engine, that's why they rate generators with a constant load and intermittant load rating. In boats, what tends to happen is that the filters start to clog up while your running, over time. Some of the first signs of this are increased black smoke behind the boat (you see a haze, it's not like a building on fire), soot buildup on the transom around the exhaust, increased engine temperature and increased exhaust temperature. At some point, if allowed to go on, the engine begins to loose RPM's. Remenber, when you increase the throttle setting on a diesel your increasing the amount of fuel delivered to each cylinder and advancing the point where the fuel is injected. So when the fuel system is restricted the amount of fuel delivered per stroke drops slightly, but the advance doesn't change. Another symptom of a restricted fuel supply is if you've been up and running, and you have to slow down, for whatever reason, and then you try to come back up to speed, the engines will not come back up to the same RPM's as they were before. All you have to do if for any reason you have to run at low load for a long time then open up to as near as full power as you can get from time to time. This will clear everything out from the nozzles and ensure that the exhaust remains clear. It may not be easy always on a generator because you may not be able to control the load but for a boat propulsion engine if you open her up the prop will take the power as the power taken is proportional to revs cubed. A diesel will not gum up its injectors unless you run it for long periods at less than 1/2 or (better) 2/3 load without bursts of higher power. |
#6
![]()
posted to rec.boats.cruising
|
|||
|
|||
![]()
On Wed, 10 Dec 2008 21:56:12 +0100, "Edgar"
wrote: "Capt John" wrote in message ... Well Bruce, if I was starving the engine to the point that the injectors were no longer getting enough fuel to return any fuel via the return line then, you surely realize that their would be a very significant reduction in power output, to the point that the engine would stall. In your case, your talking about a generator, if you put an ammeter on the output of that generator you'll probably find that it's not really loaded up to full capacity, they rarely are, except when your starting electric motors. In our case, we're talking about boats, that's the reason for this being under rec.boats, and boat engines tend to be much more heavily loaded up than say a truck or a generator engine, that's why they rate generators with a constant load and intermittant load rating. In boats, what tends to happen is that the filters start to clog up while your running, over time. Some of the first signs of this are increased black smoke behind the boat (you see a haze, it's not like a building on fire), soot buildup on the transom around the exhaust, increased engine temperature and increased exhaust temperature. At some point, if allowed to go on, the engine begins to loose RPM's. Remenber, when you increase the throttle setting on a diesel your increasing the amount of fuel delivered to each cylinder and advancing the point where the fuel is injected. So when the fuel system is restricted the amount of fuel delivered per stroke drops slightly, but the advance doesn't change. Another symptom of a restricted fuel supply is if you've been up and running, and you have to slow down, for whatever reason, and then you try to come back up to speed, the engines will not come back up to the same RPM's as they were before. All you have to do if for any reason you have to run at low load for a long time then open up to as near as full power as you can get from time to time. This will clear everything out from the nozzles and ensure that the exhaust remains clear. It may not be easy always on a generator because you may not be able to control the load but for a boat propulsion engine if you open her up the prop will take the power as the power taken is proportional to revs cubed. A diesel will not gum up its injectors unless you run it for long periods at less than 1/2 or (better) 2/3 load without bursts of higher power. You seem to have posted this message under two different names but it doesn't make any difference, you're not posting accurate information. With any diesel, the first symptom of clogging filters is a loss in power as the only thing the filters are doing is restricting the fuel flow. It doesn't make any difference whether the engine is in a boat, a bulldozer, a generator set, in your pickup, the symptom of clogging filters is a loss in power. Black smoke from the exhaust is always a result of a rich mixture - usually caused by trying to accelerate the engine quicker then it can handle the extra fuel, or overloading the engine to the extent that it cannot produce its rated RPM. Again, it doesn't make any difference what kind of diesel engine it is the symptoms are the same. Your supposition that, somehow, marine engines are rated in a different manner, again is incorrect, as again all diesel engines are rated for maximum continuous power. Yes, I know that marine engines for the pleasure boat market have a maximum (for short periods) rating but that is just to sucker the uninitiated with higher H.P. numbers, but call/write the distributor and ask him "how fast can I run the engine for all day" and guess what? You'll get told the "maximum continuous" RPM/H.P. Finally, you seem to think that, somehow, your marine engine is different then diesel engines intended to be used as, say generator engines. Have a look at the parts book of any industrial diesel engine manufacturer and you'll find that in nearly all cases marine and generator engines use the same parts. After all they are both intended for continuous RPM, continuous Power use. Vehicle engines will usually have a lighter flywheel and/or crankshaft. Different injectors are also used but that is a factor of the engine being intended for different H.P. output. Diesel engines are not rocket science and they all work the same way. Cheers, Bruce (bruceinbangkokatgmaildotcom) |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
Fuel polishing | Cruising | |||
Fuel polishing | Cruising | |||
Fuel Polishing System Finished! | Electronics |