octane number
octane rating

Both of these processes raise the octane number of the substance.

The higher the octane number, the more compression the fuel can withstand before detonating.

Use of gasoline with lower octane numbers may lead to the problem of engine knocking.

The octane number on gasoline is a measure of the gasoline's tendency to cause "knocking" in the engine.

Where the octane number is raised by blending in ethanol, energy content per volume is reduced.

Gasoline is graded by octane number, which rates its resistance to premature ignition, or engine knocking.

Research octane number (RON) for commercially-available gasoline varies by country.

More highly branched alkanes give higher octane numbers.

Because it has a high octane number, it is an important component of gasoline, composing a few percent of its mass.

Aviation gasoline with such high octane numbers could only be refined through a process of distillation of high-grade petroleum.

The research octane number (RON) of dimethylfuran is 119.

To change overnight to a different pattern of production while maintaining the octane number of the gasolene (petrol) is physically impossible.

The octane number is an empirical measure of the resistance of gasoline to combusting prematurely, known as knocking.

In contrast, fuels with lower octane numbers (but higher cetane numbers) are ideal for diesel engines.

All other compounds and blends of compounds then were graded against these two standards and assigned octane numbers.

The degree of branching affects characteristics, such as the octane number or cetane number in petroleum chemistry.

CNG-specific engines, however, use a higher compression ratio due to this fuel's higher octane number of 120-130.

MTBE is a gasoline additive, used as an oxygenate to raise the octane number.

Octane rating or octane number is a standard measure of the performance of a motor or aviation fuel.

Because some fuels are more knock-resistant than iso-octane, the definition has been extended to allow for octane numbers greater than 100.

The differences in octane number originate in chemical mixtures created at the refinery, and different grades of gasoline are kept separate throughout the distribution process.

Naphtha is treated to produce gasoline of a high octane number, eliminating the need for adding tetraethyllead to gasoline.

It may also sometimes be called the Pump Octane Number (PON).

The octane number of the alkylate depends mainly upon the kind of alkenes used and upon operating conditions.

Launched in 1974, the name came from petroleum (PET) and research octane number (RON).

The higher a gasoline's octane rating, the greater its cost.

Problems caused by using fuel with a too low octane rating.

Gasoline is now generally available only in octane ratings of 87, 89 and 93.

It has led to technology to give gasoline a higher octane rating.

The following table lists octane ratings for various other fuels.

If your vehicle requires a high octane rating, the manual will tell you.

This work led to him devising the octane rating system that is still in use today.

Gasoline sold in most countries carries a published octane rating.

One advantage shared by the four major alcohol fuels is their high octane rating.

The maximum octane rating in California is generally 91.

The problem is simply solved by using a gasoline with a higher octane rating, which makes the combustion more even.

Which brings us to the octane ratings in gasoline.

Once the leading source of fuel, its low octane rating required lead additives.

This was the origin of the octane rating scale.

Eucalyptus oil also has a respectable octane rating and can be used as a fuel in its own right.

Most car engines can burn "regular" gasoline which has an octane rating of 87.

Phillips turned to technology to increase the octane rating of fuels for use in advanced engines.

Octane rating of propane is relatively high at 110.

Like the 601, the 605 was designed to run on "B4" fuel with an octane rating of 87.

This compound is used in gasoline to improve the "octane rating" of the fuel.

This is why the octane rating was developed.

This is because different engines may give different octane ratings to the same fuel.

The octane rating is a measure of the fuel's resistance to self-ignition.

Quite simply, octane ratings are a measurement of a gas's ability to resist detonation.

When lead is added to petrol it improves a car's performance by increasing the octane rating.