Sylvie Willis
Jet fuel is a kerosene-based substance with an additive package. It is a high-octane fuel, usually over 115, that is stable and less volatile than gasoline. While jet fuel does not require a high-compression environment to burn, it can be used in high-compression engines to increase power and stability. In this context, the question arises: can a high-compression car engine run on jet fuel? Several online sources indicate that jet fuel has been used in cars, particularly in racing engines, due to its high octane rating and stability. However, it is important to note that jet fuel may not be suitable for all car engines, and using it in a car engine designed for gasoline may lead to issues and increased expenses.
| Characteristics | Values |
|---|---|
| Jet fuel | High-purity kerosene |
| Octane rating | 115 or above |
| Volatility | Low |
| Engine compatibility | Diesel |
| Engine compatibility | Gasoline |
| Engine compatibility | High-compression |
| Engine compatibility | Hybrid combustion |
| Engine compatibility | Variable compression |
| Engine compatibility | Spark ignition |
| Engine compatibility | Forced induction |
| Engine compatibility | Port fuel-injection |
| Engine compatibility | Direct injection |
| Engine compatibility | Static compression |
| Engine compatibility | Dynamic compression |
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What You'll Learn
Jet fuel is high-purity kerosene with additives
Jet fuel is a clear to straw-coloured fuel, based on either an unleaded kerosene (Jet A-1), or a naphtha-kerosene blend (Jet B). Jet A-1 is the standard specification fuel used in most parts of the world, except Russia and CIS members, where TS-1 fuel is the most common. Jet A is the standard specification fuel used in the United States and a few Canadian airports. Jet A and Jet A-1 have a flashpoint higher than 38°C (100°F) and an auto-ignition temperature of 210°C (410°F). The former has a higher freezing point than the latter.
Jet A-1 is a kerosene-based substance, similar to diesel fuel, and can be used in either compression ignition engines or turbine engines. Jet fuel is, therefore, a high-purity kerosene with additives. The additives may be used to prevent the formation of harmful chemical species or to improve a property of the fuel to prevent further engine wear. For example, metal deactivators can be added to reduce the negative effects of trace metals on the thermal stability of the fuel. The one allowable additive is the chelating agent salpn (N,N′-bis(salicylidene)-1,2-propanediamine).
Jet fuel is not the same as aviation fuel or Avgas, which is a highly refined form of gasoline for aircraft, with an emphasis on purity, anti-knock characteristics, and the minimization of spark plug fouling. Avgas is a high-octane gasoline used in piston-engine aircraft. It is sold in much lower volumes than jet fuel but to many more individual aircraft operators. Jet fuel, on the other hand, is sold in high volume to large aircraft operators.
While jet fuel is high-purity kerosene with additives, it is not recommended to use it in a car engine. It is, however, possible to use aviation fuel in a car engine, as some people have done so without any issues.
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Jet fuel is stable and less volatile than gasoline
Jet fuel is a type of aviation fuel designed for use in aircraft powered by gas-turbine engines. It is a kerosene-based substance with a high flash point and a very low freezing point of −60 °C (−76 °F). Jet fuel is stable and less volatile than gasoline due to its high flash point and low freezing point.
The stability of jet fuel is further enhanced by additives. For example, the Thermally Stable Jet Fuel developed in 1956 for the Pratt & Whitney J57 engine contained an additive to improve thermal oxidative stability. This additive package helps to prevent the fuel from breaking down or igniting too easily, making it safer to use in aircraft engines.
The stability and low volatility of jet fuel are important for aircraft safety. Aviation engines operate at high temperatures and pressures, and the fuel must be stable enough to withstand these harsh conditions without spontaneously igniting. The low volatility of jet fuel also reduces the risk of explosions or fires in the event of a fuel leak or spill.
While jet fuel is less volatile than gasoline, it is important to note that this does not mean it is less powerful. Volatility and power are not directly correlated. In fact, the high stability of jet fuel can be advantageous in certain engine designs, such as high-compression engines, where it can enable more efficient combustion and improve engine performance.
In summary, jet fuel is stable and less volatile than gasoline due to its chemical composition and the presence of additives. This stability and low volatility are important for safety in aviation engines and can also provide benefits in terms of engine performance and efficiency.
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High-compression engines can use jet fuel for more power
Jet fuel is a kerosene-based substance with a high octane rating, usually over 115. This means that it is stable and non-volatile. While jet fuel can be used in car engines, it is not necessary as it does not provide any additional power in a standard car engine. However, in a high-compression engine, jet fuel can be utilised to gain more power. This is because a high-compression engine can take advantage of the ultra-stable nature of jet fuel by increasing the compression psi in the cylinder, resulting in increased power output.
To understand this, it is important to know that octane is a measure of stability, and jet fuel's high octane rating makes it less volatile. Volatility is the enemy of power, and by using a stable fuel, the risk of spontaneous combustion (knocking) is reduced. This is particularly beneficial in high-compression engines, as they require stable fuel to prevent knocking, which can reduce efficiency or damage the engine.
While jet fuel can be used in car engines, it is not commonly used due to its cost and the specialised requirements of high-compression engines. However, there have been reports of individuals using aviation fuel, which has a high octane rating, in their cars, particularly in racing engines. This practice is driven by the high cost of racing fuel and the availability of aviation fuel at a lower price.
It is worth noting that diesel engines typically have higher compression ratios than petrol engines, and jet fuel, being a form of kerosene, may be more suitable for use in diesel engines. However, it is always important to consult a professional before attempting to use any alternative fuel in a vehicle to ensure safety and avoid potential engine damage.
In conclusion, while jet fuel can be used in car engines, its true potential can only be unlocked in high-compression engines designed to take advantage of its stability and high octane rating, resulting in increased power output.
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Avgas is aviation gasoline with high octane and lead
Avgas, or aviation gasoline, is a specialised fuel used to power piston-engine aircraft. It is a complex mixture of hydrocarbons with varying physical and chemical properties. Avgas is distinguished from conventional gasoline (or petrol) used in motor vehicles, which is termed mogas (motor gasoline) in an aviation context.
The most common grades of avgas contain tetraethyl lead, a toxic lead-containing additive used to aid in lubrication of the engine, increase octane rating, and prevent engine knocking (premature detonation). Tetraethyl lead is added to increase the effective octane rating of the fuel, allowing for higher dynamic compression ratios. Octane is a measure of the performance of a fuel as it burns in an engine's combustion chamber, and it is important to the safe operation of an aircraft or automobile engine.
The use of leaded fuels is an operational safety issue, as without the additive tetraethyl lead, the octane levels would be too low for some engines, and use of a lower-octane fuel than required could lead to engine failure. While there are ongoing efforts to reduce or eliminate the use of lead in aviation gasoline, no operationally safe, suitable replacement for leaded fuel has been found to meet the needs of all piston-engine aircraft.
Avgas is identified by two numbers associated with its Motor Octane Number (MON). The first number indicates the octane rating of the fuel tested to "aviation lean" standards, while the second indicates the rich settings used for take-off and other full-power conditions.
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Diesel engines can use jet fuel, unlike gasoline engines
Jet fuel is a kerosene-based substance with an additive package. It is similar to high-octane gasoline, which is used in some piston aircraft. While jet fuel can technically be used in a car, it is not advisable as it will not result in any power gains unless the car has a high-compression engine designed for it. In a normal car, the jet fuel would simply be more stable, resulting in less pinging and knocking.
That being said, jet fuel can be used in diesel engines, unlike gasoline engines. Diesel engines have been known to run on jet fuel, although it is not recommended as jet fuel burns hotter and faster than regular diesel and can potentially damage the engine. Despite this, some people have reported running jet fuel in their diesel cars without issue. Additionally, the US military uses jet fuel for Humvees in Iraq and Afghanistan.
The main difference between jet fuel and gasoline is that jet fuel does not require a high-compression environment to burn. It is also less volatile than gasoline, which is important for aviation safety. This stability makes jet fuel less likely to explode spontaneously (knock) and more suitable for high-performance engines.
Gasoline engines, on the other hand, are generally not compatible with jet fuel. Gasoline engines require volatile fuel to function properly, and jet fuel's stability would be a waste in this context. The use of jet fuel in a gasoline engine could result in costly repairs.
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Frequently asked questions
Yes, a high compression car engine can run on jet fuel. Jet fuel is a kerosene-based substance with high octane, which means it is stable and not volatile. A high compression engine can utilize the ultra-stable jet fuel and generate more power by increasing the compression psi in the cylinder.
Airplane fuel is just high-octane gasoline. In a normal car, high-octane jet fuel would just be more stable, and there would be less knocking. Jet fuel is wasted in a normal car as the burn rate would be similar to regular car fuel.
Diesel engines use higher compression ratios than petrol engines. Therefore, jet fuel, which is a type of kerosene, is more suitable for diesel engines.
Jet fuel has a higher octane rating than car fuel, which can provide a safety margin to allow for a higher air/fuel mix. This can result in more power and better engine performance.
