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oh..yeahhh Octane rating..
here's an explanation..sort of
Octane Measurement Methods
Research Octane Number (RON)
The most common type of octane rating worldwide is the Research Octane Number (RON). RON is determined by running the fuel in a test engine with a variable compression ratio under controlled conditions, and comparing the results with those for mixtures of iso-octane and nheptane.
Motor Octane Number (MON)
There is another type of octane rating, called Motor Octane Number (MON), or the aviation lean octane rating, which is a better measure of how the fuel behaves when under load as it is done at 900 rpm instead of the 600 rpm of the RON. MON testing uses a similar test engine to that used in RON testing, but with a preheated fuel mixture, a higher engine speed, and variable ignition timing to further stress the fuel's knock resistance. Depending on the composition of the fuel, the MON of a modern gasoline will be about 8 to 10 points lower than the RON. Normally, fuel specifications require both a minimum RON and a minimum MON.
Anti-Knock Index (AKI)
In most countries, including all of those of Australia and Europe the "headline" octane rating shown on the pump is the RON, but in Canada, the United States and some other countries, the headline number is the average of the RON and the MON, called the Anti-Knock Index (AKI). It may also sometimes be called the Road Octane Number (RON), Pump Octane Number (PON), or (R+M)/2.
Difference between RON and AKI
Because of the 8 to 10 point difference noted above, the octane rating shown in the United States is 4 to 5 points lower than the rating shown elsewhere in the world for the same fuel. See the table in the following section for a comparison.
COPYRIGHT 2010 - BONZÍ SPORTS, INC. | BONZISPORTS.COM | [email protected]
Here's how you can fake the octane rating, generally the octane rating is a resistance to knocking, you can do this in a couple of ways, one is to actually have quality fuel, the other..with regards to resistance to knock, is to add a way to prevent knocking..these days that's ethanol. The ethanol will prevent knock but it does so at the expense of creating more power for the engine. as an example, sprint cars run ethanol or methanol, but they run monster compression, and very small radiators because they don't need as much cooling, in this way they take advantage of what ethanol has to offer. so these additives really do nothing to add power to your engine, but they technically have a higher octane number because they have resistance to knock. This is why an engine that has a potential higher octane rating can make less power, depending on how the octane number is determined.
here's an explanation..sort of
Octane Measurement Methods
Research Octane Number (RON)
The most common type of octane rating worldwide is the Research Octane Number (RON). RON is determined by running the fuel in a test engine with a variable compression ratio under controlled conditions, and comparing the results with those for mixtures of iso-octane and nheptane.
Motor Octane Number (MON)
There is another type of octane rating, called Motor Octane Number (MON), or the aviation lean octane rating, which is a better measure of how the fuel behaves when under load as it is done at 900 rpm instead of the 600 rpm of the RON. MON testing uses a similar test engine to that used in RON testing, but with a preheated fuel mixture, a higher engine speed, and variable ignition timing to further stress the fuel's knock resistance. Depending on the composition of the fuel, the MON of a modern gasoline will be about 8 to 10 points lower than the RON. Normally, fuel specifications require both a minimum RON and a minimum MON.
Anti-Knock Index (AKI)
In most countries, including all of those of Australia and Europe the "headline" octane rating shown on the pump is the RON, but in Canada, the United States and some other countries, the headline number is the average of the RON and the MON, called the Anti-Knock Index (AKI). It may also sometimes be called the Road Octane Number (RON), Pump Octane Number (PON), or (R+M)/2.
Difference between RON and AKI
Because of the 8 to 10 point difference noted above, the octane rating shown in the United States is 4 to 5 points lower than the rating shown elsewhere in the world for the same fuel. See the table in the following section for a comparison.
COPYRIGHT 2010 - BONZÍ SPORTS, INC. | BONZISPORTS.COM | [email protected]
Here's how you can fake the octane rating, generally the octane rating is a resistance to knocking, you can do this in a couple of ways, one is to actually have quality fuel, the other..with regards to resistance to knock, is to add a way to prevent knocking..these days that's ethanol. The ethanol will prevent knock but it does so at the expense of creating more power for the engine. as an example, sprint cars run ethanol or methanol, but they run monster compression, and very small radiators because they don't need as much cooling, in this way they take advantage of what ethanol has to offer. so these additives really do nothing to add power to your engine, but they technically have a higher octane number because they have resistance to knock. This is why an engine that has a potential higher octane rating can make less power, depending on how the octane number is determined.
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