Ameer Randolph
Gasoline, or petrol, is a fossil fuel that powers most vehicles. It is a mixture of hydrocarbons with between four and twelve carbon atoms per molecule. Gasoline is made from crude oil, which is pumped from deep underground. Crude oil is a finite resource formed from the remains of tiny plants and animals that lived millions of years ago. The process of creating gasoline involves breaking down crude oil into other components, which are then blended with other liquids to make finished motor gasoline.
| Characteristics | Values |
|---|---|
| Main Source | Crude Oil |
| Other Names | Gasoline, Petrol |
| Composition | A mixture of hydrocarbons with between four and twelve carbon atoms per molecule |
| Carbon Atoms | 4-12 |
| Mixture of | Paraffins (alkanes), olefins (alkenes), napthenes (cycloalkanes), aromatics |
| Octane Rating | Indicates the resistance to detonation in the engine |
| Ethanol | Added to meet the requirements of the Renewable Fuel Standard |
| Burning Fossil Fuels | Releases carbon dioxide and other greenhouse gases |
| Boiling Point | Near 85°C (185°F) |
Explore related products
What You'll Learn
Gasoline is made from crude oil
Gasoline is a product of refined crude oil. Crude oil is a fossil fuel, created from the remains of tiny plants and animals that lived millions of years ago. Over time, these remains were covered with layers of sediment and subjected to high pressures and temperatures, resulting in the formation of a mixture of liquid hydrocarbons called petroleum.
Hydrocarbons are organic chemical compounds composed of hydrogen and carbon molecules. Crude oil is made up of a mixture of these hydrocarbons, which can be separated and turned into various products. The process of refining crude oil involves separating its components based on their boiling points, as different hydrocarbon chains have different boiling points. This separation allows for the production of products with distinct physical properties.
The gasoline we use for automobile fuel is primarily made up of hydrocarbon chains with seven to eleven carbon atoms per molecule, commonly referred to as C7-C11. These hydrocarbons are combined with oxygen from the ambient air during combustion in an engine, producing carbon dioxide and water as exhaust. The performance specifications of gasoline vary with the season, requiring less volatile blends during the summer to minimize evaporative losses.
The process of converting crude oil into gasoline involves distillation, conversion, and treatment or blending. During distillation, the oil is heated and separated in towers. In the conversion phase, companies add chemicals, catalysts, pressures, and heat to break down larger hydrocarbons into smaller ones. Finally, during the treatment or blending phase, the elements are combined to make the various types of products that can be used as engine fuel, such as high or low octane gasoline, diesel, biodiesel, or gasoline with ethanol.
Enhancing CNG Car Fuel Efficiency: Tips for Better Performance
You may want to see also
Explore related products
Crude oil is a fossil fuel
Crude oil is a thick, dark substance that is pumped from deep underground. It is a non-renewable energy source and is refined to produce a wide variety of products, including fuels such as gasoline, kerosene, and diesel. Gasoline, also known as petrol, is a transparent, yellowish, and flammable liquid used as fuel for spark-ignited internal combustion engines. The combustion of gasoline's various hydrocarbons with oxygen from the air produces carbon dioxide and water as exhaust.
The composition of crude oil varies depending on its source, and it can contain toxic elements and compounds such as vanadium and mercury. The Shukhov cracking process, developed in 1891, was the first commercial method to break down heavier hydrocarbons in crude oil, increasing the percentage of lighter products through distillation. The performance specifications of gasoline vary with the season, requiring less volatile blends during the summer to minimize evaporative losses.
The process of refining crude oil into gasoline involves fractional distillation and the addition of various additives to enhance its performance. The ability of a particular gasoline blend to resist premature ignition (knocking) is measured by its octane rating. Tetraethyl lead was historically used to increase the octane rating but is no longer used in automotive gasoline due to health hazards.
In summary, crude oil is a fossil fuel composed of hydrocarbons that originated from the remains of ancient organisms. It is refined to produce various products, including gasoline, which is a widely used fuel for internal combustion engines. The composition and performance of gasoline are carefully calibrated, and it must be stored correctly to prevent degradation and maintain engine performance.
Fuel Injected Cars: Naturally Aspirated or Turbocharged?
You may want to see also
Explore related products
Gasoline is a mixture of hydrocarbons
Gasoline, also known as petrol, is a mixture of hydrocarbons with between four and twelve carbon atoms per molecule. Hydrocarbons are organic chemical compounds made up of hydrogen and carbon molecules. They are derived from the fractional distillation of petroleum or crude oil, which is a fossil fuel. Crude oil is a thick, dark substance pumped from deep underground and formed from the remains of tiny plants and animals that lived millions of years ago. These remains were covered by sediment and subjected to high temperatures and pressures, resulting in the formation of petroleum.
The hydrocarbon chains in gasoline typically contain seven to eleven carbon atoms. The length of these chains determines the use of the hydrocarbon; shorter chains are used for petroleum gases like methane and butane, while longer chains are used for heavier fuel oils, lubricating oils, and solid forms of petroleum such as paraffin wax. The different boiling points of these hydrocarbon chains are utilised to separate them into distinct products.
The bulk of gasoline consists of a mixture of paraffins (also called alkanes), olefins (alkenes), naphthenes (cycloalkanes), and aromatics. The specific composition of gasoline depends on the oil refinery that produces it, as different refineries have varying processing units and refinery streams. Straight-run gasoline, or naphtha, is distilled directly from crude oil and was once a major source of fuel. However, its low octane rating required the addition of organometallic fuel additives.
Gasoline is used as a fuel for spark-ignited internal combustion engines, where it undergoes combustion with oxygen from the ambient air to produce carbon dioxide and water as exhaust. The performance specifications of gasoline vary seasonally, with less volatile blends being required during the summer to minimise evaporative losses. To maintain optimal engine performance, gasoline should be stored in airtight containers at stable, cool temperatures to prevent oxidation, the formation of solids, and the loss of volatile fractions.
Fuel and Electrical: What's the Connection in Cars?
You may want to see also
Explore related products
Gasoline is stored in airtight containers
Gasoline, or petrol, is a petrochemical product derived from the fractional distillation of petroleum. It is a transparent, yellowish, and flammable liquid that is used as a fuel for spark-ignited internal combustion engines.
Gasoline should be stored in airtight containers to prevent oxidation or water vapour mixing with the gas. It should be stored in a container that can withstand the vapour pressure of the gasoline without venting to prevent the loss of the more volatile fractions. Additionally, it should be stored in a cool, stable temperature to reduce excess pressure from liquid expansion and to reduce the rate of any decomposition reactions.
When gasoline is not stored correctly, gums and solids may result, which can corrode system components and accumulate on wet surfaces, resulting in a condition called "stale fuel". Gasoline containing ethanol is especially prone to absorbing atmospheric moisture, forming gums, solids, or two phases (a hydrocarbon phase floating on top of a water-alcohol phase). This buildup can cause issues with engine performance and make it harder to start the engine.
It is important to note that gasoline should only be stored in containers specifically manufactured for gasoline storage, as it can break down the chemical bonds of simple plastic containers, weakening their structure. Proper plastic gas cans are usually made of thick, reinforced HDPE, while common HDPE containers like milk jugs can become brittle and are not sturdy enough to handle thermal expansion.
To ensure safety, gasoline should be stored in a detached shed or garage, away from potential heat sources and ignition sources such as pilot lights. It is also crucial to follow local fire codes and regulations for safe storage.
Fuel Filter Installation Guide for Club Car DS Models
You may want to see also
Explore related products
Gasoline is blended with ethanol
Gasoline, or petrol, is a fossil fuel that is produced from crude oil or petroleum, which is pumped from deep underground. It is a mixture of hydrocarbons with between four and twelve carbon atoms per molecule. The different types of gasoline blends are determined by the oil refinery that makes the gasoline, as not all refineries have the same set of processing units.
One common additive in gasoline blends is ethanol, which is a renewable fuel made from various plant materials collectively known as "biomass". Ethanol has a higher octane number than gasoline, providing premium blending properties. Minimum octane number requirements for gasoline prevent engine knocking and ensure drivability. Lower-octane gasoline is often blended with 10% ethanol to attain the standard 87 octane. This blend is known as E10 and is approved by the U.S. Environmental Protection Agency (EPA) for use in any conventional, gasoline-powered vehicle. E10 is sold in every state and helps to reduce air pollution.
Ethanol can also be blended with gasoline in higher concentrations, such as E15, E25, and E85. E15 is a blend of 10.5% to 15% ethanol and gasoline, while E25 is 25% ethanol and 75% gasoline. E85, or flex fuel, is an ethanol-gasoline blend containing 51% to 83% ethanol, depending on geography and season. These higher ethanol blends are used in flexible fuel vehicles (FFVs), which are designed to run on any mixture of gasoline and ethanol.
Ethanol fuel contains ethyl alcohol, the same type of alcohol found in alcoholic beverages. It is important to note that ethanol is hygroscopic, meaning it absorbs water vapor from the atmosphere. As a result, containers of ethanol fuel must be kept tightly sealed to prevent phase separation of ethanol-gasoline blends, which can cause engine stall.
The Cost of Cleaning Car Fuel Injectors: Expensive Maintenance
You may want to see also
Frequently asked questions
Car fuel, or gasoline, is made from crude oil and other petroleum liquids. It is a mixture of hydrocarbons with between four and twelve carbon atoms per molecule.
Crude oil is a fossil fuel that is created from the remains of tiny plants and animals that lived and were covered by sediment millions of years ago. It is pumped from deep underground and refined in oil refineries to produce gasoline.
Gasoline is blended with ethanol to meet Renewable Fuel Standard requirements and reduce greenhouse gas emissions. It may also include additives to improve performance and longevity.
