Octane - Fuel characteristics and the importance of Octane(Tuesday 31 January 2006 Contributed by Administrator Last Updated(Tuesday 31 January

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Fuel characteristics and the importance of Octane (Tuesday, 31 January 2006) - Contributed by Administrator - Last Updated (Tuesday, 31 January 2006) The following feature on fuels was written by Graham Lord of Millers Oils Ltd and is reproduced with the permission of Millers Oils Ltd. Opinions expressed here are not necessarily those of the Peking Paris Morgan team or of the event's organisers. History of the fuel industry The fuel / oil industry as we know it today, started between 27-29th August 1859 when a well at Titusville, Pennsylvania reached 69.5 ft. When work resumed after the weekend it was found to be ¾ full of oil! The oil and fuel industry, and life as we know it today was born. The petrol we all use whether in our race cars, classic cars or everyday family car started life millions of years ago under land and sea. However the petrol that was produced over 100 years ago would hardly be suitable for classics let alone the latest modern vehicles. Petrol Petrol is made up from several different compounds and the refinery blends up to 8 compounds together to make the final product. In former times lead in the form of Tetraethyl Lead (TEL) would have been found in all petrol but legislation has virtually ended this practice. That is unless you have easy access to aviation fuel known as Avgas! The additive industries role in developing the chemicals which can perform in a similar manner to TEL was first witnessed in California in the early seventies and finally reached the UK and Europe in the late 80’s. First we should acknowledge that TEL was originally developed to allow the power output of very early aircraft engines to be doubled without them self-destructing due to detonation. In other words the lead oxides prevented hydrogen peroxides being formed and also controlled the flame front. Lead in petrol is generally known for its lubrication of valve seats and the prevention of valve recession. This feature was only discovered later, but once understood, was used widely by engine designers. In the late 1950’s / early 60’s, the Ethyl Corporation instituted a research programme to find other compounds which could be used as a lead substitute i.e. control detonation, lubricate value and provide octane. An initial compound based on iron was thought possible. However this was abandoned due to the low octane lift and high engine wear rates (the formation of soluble iron compounds after combustion, leave a residue like jewellers rouge, red iron oxide, which is highly abrasive). This resulted in the company continuing the search for more suitable materials, the result being Methylcyclopentadienyl Manganese Tricarbonyl or MMT. This is the product which Millers uses in all it’s fuel treatments. Millers VSP & CVL
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This note was uploaded on 05/14/2008 for the course ENERGETICA 203 taught by Professor Tar during the Summer '08 term at ITESM.

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Octane - Fuel characteristics and the importance of Octane(Tuesday 31 January 2006 Contributed by Administrator Last Updated(Tuesday 31 January

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