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#1
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Basskisser,
I have watched you two argue this one to death, and I still have not figured out your position. Are you saying that some oil is burned/consumed in the combustion process and some oil is exhausted without actually being burned? If that is correct, how is that different than what Steve is saying? "basskisser" wrote in message om... (Steven Shelikoff) wrote in message ... On 10 Jul 2003 04:59:03 -0700, (basskisser) wrote: (Steven Shelikoff) wrote in message ... On 9 Jul 2003 12:13:48 -0700, (basskisser) wrote: (Steven Shelikoff) wrote in message Also, do you or do you NOT contend that burned and consumed do NOT mean the same? I'll answer that directly if you answer my followon question directly. My answer is that I contend that consumed can mean burned. It can also mean other things. For instance, fusion and fission come to mind. Now, do you or do you NOT contend that "burned" and "consumed in the combustion process" DO mean the same thing? correct, I do NOT contend that "burned" and "consumed in the combustion process" mean the same thing. IF it said "consumed VIA combustion", yes. However, it simply says that oil is consumed (through many different ways) DURING the combustion PROCESS." The No no no, wrong. It does NOT say oil is consumed DURING the combustion process. Are you really that incapable of reading? It says oil is consumed IN the combustion process. You idiot. It says "in the combustion PROCESSS". Get it? NOT SPECIFICALLY DURING the precise combustion. It is CONSUMED in the PROCESS of combustion. Man, you are thick. You're wrong again. You really can't read, can you? It doesn NOT say consumed in the process of combustion. Although if it did, that would still be the same thing as burned. Now, let's try this yet one more time. And I'll put quotes around the things to compare. Is it your contention that something being "consumed in the combustion process" is somehow different than something being "burned"? And if it is somehow different, then when the technical reference says: "When a piston moves down its cylinder, a thin film of oil is left on the cylinder wall. During the power stroke, part of this oil layer is consumed in the combustion process." where does the oil that is consumed in the combustion process go if it isn't burned? Is it your contention that the thin film of oil that is stuck to the sides of the cylinder can somehow make it's way out of the engine during the power stroke without being burned? Remember that the oil has to be consumed "during the power stroke" and the oil is "on the cyilinder wall" when it is consumed "in the combustion process." So please tell us all, if the oil is not burned, what way does an engine lose oil that fits all those criteria, i.e., on the cylinder wall during the power stroke in the combustion process? Steve Oh my God, you ARE the most thick headed person in the world!!! I can't WAIT to show this to the others in my office!! Laughs over beer will be on YOU tonight! Is not "the combustion process" the same as the process of combustion? I simply paraphrased to simplify to TRY to get you to understand a VERY basic flaw in your diatribe. But, you are either too stupid to get it, or just refuse to. Now, WHY and WHERE did you come up with something as absurd as "the oil has to be consumed during the power stroke? Also, are you really so dumb that you think that the ONLY way oil can be consumed is by being burned?? You see, the intent isn't that the oil is necessarily consumed in a global, universal, or galactical way, it's consumed only as far as an ENGINE is concerned. Jeez. |
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#2
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On Thu, 10 Jul 2003 21:38:14 GMT, "Put Name Here"
wrote: Basskisser, I have watched you two argue this one to death, and I still have not figured out your position. Are you saying that some oil is burned/consumed in the combustion process and some oil is exhausted without actually being burned? He's saying that an engine should burn NO oil and that anyone who says a normal does engine burns oil is an idiot. He refuses to admit that any oil at all, even a single molecule is burned during normal engine operation. He asked for technical references and they were provided. Yet he refuses to believe them. His loss. If that is correct, how is that different than what Steve is saying? I'm saying that oil is being burned by an engine whenever it's running. That for a normal engine in good shape, it's just about the only way an engine can lose oil *if* you don't see it dripping out anywhere, either from the case or the exhaust.. Steve |
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#3
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#4
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"Joe" wrote in message . ..
This from someone who has convinced himself (and Joe) that consume and burn mean the same thing!!!!! By the way, my neighbor and I had a good laugh at you and Joe last evening. He's a Chrysler certified mechanic, so I've shown him your posts. As we were working on his Honda lawnmower motor, I told him I thought it was the carb acting up, and he said "Nah, probably not burning enough oil."! Birds of a feather. Don't you find it a little curious that NO ONE has agreed with your position? Funny, but aircraft machinists do!: Suggestions for Proper Engine Break-In -------------------------------------------------------------------------------- Whenever an engine's piston rings are replaced whether in part or in entirety it is necessary to break in the engine. Piston rings are replaced at a complete engine overhaul or repair, top overhaul or single cylinder overhaul or repair. When we refer to engine or cylinder break in, we are talking about the physical mating of the engine's piston rings to it's corresponding cylinder wall. That is, we want to physically wear the new piston rings into the cylinder wall until a compatible seal between the two is achieved. Proper engine break in will produce an engine that achieves maximum power output with the least amount of oil consumption due to the fact that the piston rings have seated properly to the cylinder wall. When the piston rings are broken in or seated, they do not allow combustion gases to escape the combustion chamber past the piston rings into the crankcase section of the engine. This lack of "blow-by" keeps your engine running cleaner and cooler by preventing hot combustion gases and by-products from entering the crankcase section of the engine. Excessive "blow-by" will cause the crankcase section of the engine to become pressurized and contaminated with combustion gases, which in turn will force normal oil vapors out of the engine's breather, causing the engine to consume excessive amounts of oil. In addition to sealing combustion gases in the combustion chamber, piston rings must also manage the amount of oil present on the cylinder walls for lubrication. If the rings do not seat properly, they cannot perform this function and will allow excessive amounts of oil to accumulate on the cylinder wall surfaces. This oil is burned each and every time the cylinder fires. The burning of this oil, coupled with "blow-by" induced engine breathing, are reasons that an engine that hasn't been broken in will consume more than its share of oil. When a cylinder is overhauled or repaired the surface of it's walls are honed with abrasive stones to produce a rough surface that will help wear the piston rings in. This roughing up of the surface is known as "cross-hatching". A cylinder wall that has been properly "cross hatched" has a series of minute peaks and valleys cut into its surface. The face or portion of the piston ring that interfaces with the cross hatched cylinder wall is tapered to allow only a small portion of the ring to contact the honed cylinder wall. When the engine is operated, the tapered portion of the face of the piston ring rubs against the coarse surface of the cylinder wall causing wear on both objects. At the point where the top of the peaks produced by the honing operation become smooth and the tapered portion of the piston ring wears flat break in has occurred. When the engine is operating, a force known as Break Mean Effective Pressure or B.M.E.P is generated within the combustion chamber. B.M.E.P. is the resultant force produced from the controlled burning of the fuel air mixture that the engine runs on. The higher the power setting the engine is running at, the higher the B.M.E.P. is and conversely as the power setting is lowered the B.M.E.P. becomes less. B.M.E.P is an important part of the break in process. When the engine is running, B.M.E.P. is present in the cylinder behind the piston rings and it's force pushes the piston ring outward against the coarse honed cylinder wall. The higher the B.M.E.P, the harder the piston ring is pushed against the wall. The surface temperature at the piston ring face and cylinder wall interface will be greater with high B.M.E.P. than with low B.M.E.P. This is because we are pushing the ring harder against the rough cylinder wall surface causing high amounts of friction and thus heat. The primary deterrent of break in is this heat. Allowing to much heat to build up at the ring to cylinder wall interface will cause the lubricating oil that is present to break down and glaze the cylinder wall surface. This glaze will prevent any further seating of the piston rings. If glazing is allowed to happen break in will never occur. We must achieve a happy medium where we are pushing on the ring hard enough to wear it in but not hard enough to generate enough heat to cause glazing. If glazing should occur, the only remedy is to remove the effected cylinder, re-hone it and replace the piston rings and start the whole process over again. Understanding what happens in the engine during break in allows us to comprehend the ideas behind how we should operate the engine after piston rings have been changed. The normal prescribed flight procedure after ring replacement is to keep ground running to a minimum, take off at full power and reduce to climb power at the first available safe altitude, all while keeping the climb angle flat and the climb airspeed higher to promote the best cooling possible. At cruise altitude we should use 65% to 75% power and run the engine richer then normal. At all times we are to remember that heat is the greatest enemy of engine break in, we should try to maintain all engine temperatures in the green, well away from the top of the green arc or red line. This means step climbing the aircraft if necessary, operating with the cowl flaps open or in trail position during cruise flight and being generous with the fuel allocation for the engine. We should not run the engine above 75% power in cruise flight because the B.M.E.P is too great and the likelihood of glazing increases. As you can see, keeping the engine as cool as is practical and at a conducive power setting is the best combination for successful engine break in. |
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#6
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"jps" wrote in message ...
"Steven Shelikoff" wrote in message ... On Tue, 08 Jul 2003 14:12:20 GMT, "Joe" wrote: This from someone who has convinced himself (and Joe) that consume and burn mean the same thing!!!!! By the way, my neighbor and I had a good laugh at you and Joe last evening. He's a Chrysler certified mechanic, so I've shown him your posts. As we were working on his Honda lawnmower motor, I told him I thought it was the carb acting up, and he said "Nah, probably not burning enough oil."! Birds of a feather. Don't you find it a little curious that NO ONE has agreed with your position? DimDummy's neighbor has. Obviously they drink from the same well. At least his 8yo daughter now knows her father is an idiot. Steve Damn Steve, did your father beat you or call you a moron or what? Do you have children and understand the weight of this hateful tone of yours? How someone can be as smart as you and so socially stunted is awesome. Best of luck with your personal challenge. He's a worthless pig and knows it, hence he resorts to **** like that. |
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#7
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