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#1
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Hi John,
Detonation refers to more energy being imparted to the fuel air mixture by compression heating than can be absorbed without igniting the fuel. Detonation damages rod bearings and is a serious problem over the long term in reciprocating engines. John, every power stroke of a diesel engine fits that definition. Diesels, by definition, compress the fuel & air to the point the fuel ignites. only air is compressed, but well beyond the point where fuel will ignite! But the fuel is only added at the moment when it is supposed to ignite. regards, Friedrich -- for personal email please remove "entfernen" from my adress |
#2
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In article ,
"Friedrich Ostertag" writes: Hi John, Detonation refers to more energy being imparted to the fuel air mixture by compression heating than can be absorbed without igniting the fuel. Detonation damages rod bearings and is a serious problem over the long term in reciprocating engines. John, every power stroke of a diesel engine fits that definition. Diesels, by definition, compress the fuel & air to the point the fuel ignites. only air is compressed, but well beyond the point where fuel will ignite! But the fuel is only added at the moment when it is supposed to ignite. Just so, Friedfrich. To get to teh original point, In the U.S.,(Or NATO, for that matter, Kerosene, #1 Diesel, and Jet-A type (JP-5 and JP-8) are considered interchangable. The U.S. Army, and, IIRC, all of NATO, by now, is using JP-8 as its sole aviation adn diesel fuel. in order to ease logistical demands. Jet-B type fuels, (Jet-B, JP-4), aren't considered suitable for use in Diesels. (THey've got gasoline in them) #2 Diesel fuel, used in warmer climates in the U.S., had a higher sulphur content (It doesn't anymore, pollution, you know) and some engines used the greater viscosity that they brought about to lubricate parts of teh fuel system (Injector pumps, usually). Of course, without the sulphur, it doesn't do that anymore, so there are additives available for the engines which need it. (Sort of like the aftermarket Lead Substitutes for older gasoline engines). # Heating Oil is similar, but doesn't have the Dyes placed in U.S. #2 Diesel fuel to show that the necessary fuel taxes have been paid. (Note for homeowners between Heating Oil deliveries - These dyes tend to leave residues in the cumbustor of the furnace that can shorten its life. If you need a small dollop of additional fuel, use Kerosene instead) I note the Tarver has popped in. Just to translate from Tarver to English, "Cut and Paste" means Performed Research - in this case, sources are Chevron's Technical Notes on Fuels, and the NATO logistics manuals. Mine are hard copies, buy they are probably available on the Web. As for hands-on experience, current Diesels in the family Truck Park include a 1945 Cable-Lift Catepillar D-6, and a 1959 Mack B61. -- Pete Stickney A strong conviction that something must be done is the parent of many bad measures. -- Daniel Webster |
#3
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![]() "Peter Stickney" wrote in message ... #2 Diesel fuel, used in warmer climates in the U.S., had a higher sulphur content (It doesn't anymore, pollution, you know) and some engines used the greater viscosity that they brought about to lubricate parts of teh fuel system (Injector pumps, usually). Nice cut and paste Pete, but there is more to #2 diesel than what you write. California made #2 diesel madatory, so that the injector clearances can be tightened. More recently, California has required additives to #2 diesel that cause the engine's seals to disintegrate. This change has managed to run this County's long haul trucking businesses to Oklahoma and other operators to evade California road taxes by filling up before entering the State. |
#4
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In rec.aviation.military Peter Stickney wrote:
# Heating Oil is similar, but doesn't have the Dyes placed in U.S. #2 Diesel fuel to show that the necessary fuel taxes have been paid. Uh, just a minor quibble, but my understanding is that they dye the non-taxed stuff so that they can see the dye in over the road trucks that have been cheating. I know, dying the non-taxed seems backwards but that is what I have always seen on various web pages related to diesel fuel issues. Here is a link to an EPA document to support what I have said. http://www.epa.gov/otaq/consumer/f99029.pdf Bill Ranck Blacksburg, Va. |
#5
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![]() wrote in message ... In rec.aviation.military Peter Stickney wrote: # Heating Oil is similar, but doesn't have the Dyes placed in U.S. #2 Diesel fuel to show that the necessary fuel taxes have been paid. Uh, just a minor quibble, but my understanding is that they dye the non-taxed stuff so that they can see the dye in over the road trucks that have been cheating. I know, dying the non-taxed seems backwards but that is what I have always seen on various web pages related to diesel fuel issues. Here is a link to an EPA document to support what I have said. http://www.epa.gov/otaq/consumer/f99029.pdf Bill is of course, correct. |
#6
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![]() wrote in message ... In rec.aviation.military Peter Stickney wrote: # Heating Oil is similar, but doesn't have the Dyes placed in U.S. #2 Diesel fuel to show that the necessary fuel taxes have been paid. Uh, just a minor quibble, but my understanding is that they dye the non-taxed stuff so that they can see the dye in over the road trucks that have been cheating. I know, dying the non-taxed seems backwards but that is what I have always seen on various web pages related to diesel fuel issues. Here is a link to an EPA document to support what I have said. http://www.epa.gov/otaq/consumer/f99029.pdf In the UK diesel fuel for agricultural vehicles is exempt from tax and it is dyed red. As diesel is more commonly used on cars and pickups than in the USA its common to see excise men checking fuel tanks at country markets and fairs. Keith |
#7
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#8
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![]() "Friedrich Ostertag" wrote in message ... Hi John, Detonation refers to more energy being imparted to the fuel air mixture by compression heating than can be absorbed without igniting the fuel. Detonation damages rod bearings and is a serious problem over the long term in reciprocating engines. John, every power stroke of a diesel engine fits that definition. Diesels, by definition, compress the fuel & air to the point the fuel ignites. only air is compressed, but well beyond the point where fuel will ignite! But the fuel is only added at the moment when it is supposed to ignite. Hmmm, you're right of course and I never meant to imply otherwise. I can see where it could be taken that I did though. |
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