2013年5月21日星期二

How to Boost Octane Rating for Ethanol

How to Boost Octane Rating for Ethanol

The octane rating of fuel is tied to its performance and speed of combustion in a vehicle's engine. The higher the octane rating in a fuel such as ethanol, the slower the fuel will burn and less likely that the engine will "knock." When fuel burns too fast, a vehicle's engine will "knock" and may even temporarily cease working. Boosting the octane rating of ethanol can improve a vehicle's overall performance


Instructions
Ethanol Energy

1
Ethanol is derived from an alternative fuel produced from starches contained in grains such as sugarcane, sorghum, barley and corn. Ethanol has a high octane rating, about 113, compared with 107 for methanol and 86 to 94 for gasoline. Ethanol also burns cleanly because of its high octane rating.

Boosting the octane rating of ethanol can improve an engine's efficiency. Don't assume that using fuel with a high octane rating automatically will boost efficiency. Using the correct octane fuel suitable for your engine's fuel delivery system is of paramount importance.

2
Check state ethanol labeling laws. You can assess and boost the octane rating of your ethanol fuel with a portable alcohol fuel test kit or portable octane analyzer meter. A portable alcohol fuel test kit comes in a pocket size and can be re-used, making testing an octane rating easy and accurate. This will help you use the right fuel octane rating for your engine.

Boost the octane rating by buying high-quality fuel and refueling often, every one to two weeks, for the best results. Also keep your engine well tuned and lubricated and follow the manufacturer's recommended maintenance schedule.

3
Ethanol absorbs moisture from its surroundings. Around 90 to 100 days, if not used, ethanol in your gas tank or engine enters a "phase separation" stage, where two layers of liquid are visible. After phase separation, ethanol drastically changes, with its octane rating slipping by as much as three points. For example, if you bought 110-octane ethanol gas, after phase separation, you will have only a 107 octane rating or lower, which can be detrimental to the engine. One strategy to boost ethanol's octane rating is to burn the fuel as soon as possible before phase separation occurs.



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