Regan Brown
Flexible-fuel vehicles (FFVs) are cars that have an internal combustion engine and can operate on gasoline and any blend of gasoline and ethanol up to 83%. The most common form of ethanol-based gas is called E85, which was created to take advantage of the United States' ability to produce bio-based ethanol, typically from corn. E85 is considered more environmentally friendly than the typical 90/10 percent gasoline/ethanol mix found at most pumps. FFVs have one fuel system and are similar to their conventional gasoline-only counterparts, except for some special ethanol-compatible components. FFVs are also considered alternative fuel vehicles (AFVs) under the Energy Policy Act of 1992.
Characteristics and Values of Flexible Fuel Cars
| Characteristics | Values |
|---|---|
| Definition | Automotive drivetrain that can run on either traditional or ethanol-blended gasoline |
| Synonyms | Flexible fuel vehicles (FFVs), flex-fuel vehicles, flex fuel |
| Engine | Internal combustion engine |
| Fuel | Gasoline, ethanol, or a blend of both |
| Fuel blend | Any blend of gasoline and ethanol up to 83% ethanol; E85 (or flex fuel) is a gasoline-ethanol blend containing 51% to 83% ethanol, depending on geography and season |
| Fuel economy | May be lower with increased levels of ethanol; fewer miles per gallon |
| Performance | Improved acceleration performance with higher ethanol blends; increased torque and horsepower |
| Fuel injection | Fuel injection system introduces fuel into the engine's combustion chambers for ignition |
| Fuel pump | Transfers fuel from the tank to the engine's fuel injection system via the fuel line |
| Fuel tank | Stores fuel on board the vehicle to power the engine |
| Fuel filler | A nozzle from a fuel dispenser attaches to the receptacle on the vehicle to fill the tank |
| Fuel identification | Flex fuel vehicles have a yellow gas cap, a yellow ring around the filler, or a "flex fuel" badge on the body |
| Exhaust system | Channels exhaust gases from the engine out through the tailpipe; a three-way catalyst is designed to reduce engine-out emissions |
| Sensors | Equipped with electronic sensors that gauge the blend of fuel and adjust the fuel injection and timing |
| Microprocessors | Make necessary adjustments to the vehicle's operation based on the fuel blend |
| Tax credits | Consumers who drive flex-fuel cars may receive tax credits that reduce or eliminate their tax obligation |
| Market | As of 2022, there were more than 20.9 million FFVs in the United States; Brazil, the United States, Canada, and Europe (led by Sweden) also have significant FFV markets |
Explore related products
What You'll Learn
Flexible fuel vehicles (FFVs)
The most common commercially available FFV in the world market is the ethanol flexible-fuel vehicle, with about 60 million automobiles, motorcycles, and light-duty trucks manufactured and sold worldwide by March 2018. The most common form of ethanol-based gasoline is E85, which contains up to 83% ethanol content during the summer months and a reduced amount in winter in some regions to avoid cold-weather starting problems. FFVs can also run on E100, which is 100% ethanol fuel.
In addition to flex-fuel vehicles running on ethanol, there have been successful test programs with methanol flex-fuel vehicles, known as M85 flex-fuel vehicles, and P-series fuels with E85 flex-fuel vehicles. Hybrid electric and plug-in hybrid FFVs are also available, capable of running on gasoline, E-85, or E-100, in conjunction with an electric engine or to recharge the battery pack.
One of the main concerns about FFVs is their gas mileage, as ethanol contains less energy than gasoline, resulting in lower miles per gallon. However, ethanol is typically cheaper than regular gasoline, and FFV owners can receive tax credits that can significantly reduce their tax obligations.
Fuel Injector Failure: Why Your Car Shuts Off
You may want to see also
Explore related products
Ethanol-blended gasoline
Flexible fuel vehicles (FFVs) are capable of operating with gasoline and any blend of gasoline and ethanol up to 83%. Ethanol-blended gasoline is a combination of ethanol and gasoline. The most common blend is E10, which contains 10% ethanol and 90% gasoline. This blend is used in over 20 countries and was mandated for use in Florida by the end of 2010. Other common blends include E5 and E7, which are considered safe for modern engines that run on pure gasoline.
However, there are also some drawbacks to consider. Ethanol-blended gasoline typically results in lower fuel economy, providing 33% less energy than conventional gasoline. This means that while it costs less, you will need 1.5 times more ethanol to cover the same distance as with regular gasoline. Ethanol is also more susceptible to water contamination due to its water-absorbing properties. Additionally, at levels below 20%, ethanol can stimulate microbial growth, leading to high acid levels and accelerated corrosion in engines.
To address the challenges posed by ethanol-blended gasoline, additives like Biobor EB and Biobor JF have been developed. These additives act as fuel stabilizers and biocides, respectively, helping to protect engines from issues related to ethanol, such as microbial contamination and corrosion.
Older Cars: Fuel Efficiency and Maintenance Tips
You may want to see also
Explore related products
Bi-fuel vehicles
The term "flexible-fuel vehicle" is sometimes used to refer to bi-fuel vehicles, which can run on compressed natural gas (CNG), liquefied petroleum gas (LPG), or hydrogen. However, it is important to note that bi-fuel vehicles are distinct from flexible-fuel vehicles because they have engines that store each fuel type in separate tanks, and the engine runs on one fuel at a time. Bi-fuel vehicles allow the driver to switch between fuel types, either manually or automatically, depending on the vehicle.
The most common fuel type for bi-fuel cars is natural gas (CNG). By 2008, there were already 9.6 million natural gas vehicles globally, with Pakistan, Argentina, and Brazil leading the way. Natural gas vehicles are particularly popular as taxicabs in major cities in Argentina and Brazil.
However, it is important to consider the limitations of bi-fuel vehicles. The availability of alternative fuels, such as ethanol, may be limited to specific regions or markets. Additionally, the performance and gas mileage of bi-fuel vehicles can vary depending on the fuel type being used. For example, while ethanol is more affordable, it provides less energy, resulting in lower gas mileage compared to regular gasoline.
Fuel-Needing Cars: Electric Rivals' Unsung Advantage
You may want to see also
Explore related products
Flex-fuel benefits
Flexible-fuel vehicles (FFVs) are capable of operating with gasoline and any blend of gasoline and ethanol up to 83%. E85 (or flex fuel) is a gasoline-ethanol blend containing 51% to 83% ethanol, depending on geography and season.
Environmentally friendly
Ethanol burns cleaner than gasoline, meaning flex-fuel cars emit fewer toxic fumes and contribute fewer greenhouse gases. Ethanol is also sustainably produced from ingredients like cane sugar and corn, making it a good alternative to foreign oil.
Flexibility
Flex-fuel vehicles can burn any proportion of fuel mixture in the combustion chamber. They are equipped with electronic sensors that gauge the blend and make the necessary adjustments. This means that you can use any combination of gasoline and ethanol, whether it's 100% unleaded gas or 85% ethanol.
Performance
While some argue that alternative fuel sources negatively impact performance, flex-fuel vehicles do not experience a loss in performance when using E85 fuel. In fact, some even generate increased torque and horsepower. Additionally, many FFVs have improved acceleration performance when operating on higher ethanol blends.
Cost-effective
Ethanol is typically cheaper than regular gasoline, and consumers who drive flex-fuel cars may also receive tax credits that can significantly reduce or eliminate their tax obligation.
Fuel-Efficient Cars: Less CO2 Emissions?
You may want to see also
Explore related products
$69.99
Flex-fuel hybrid electric
A flexible-fuel vehicle (FFV) is an alternative fuel vehicle with an internal combustion engine capable of operating on gasoline and any blend of gasoline and ethanol up to 83%. E85 (or flex fuel) is a gasoline-ethanol blend containing 51% to 83% ethanol, depending on geography and season. FFVs are factory-made, and many vehicle owners may not realise their car is an FFV and that they have a choice of fuels to use.
In December 2018, Toyota do Brasil announced the development of the world's first commercial hybrid electric car with a flex-fuel engine capable of running with electricity and any blend of ethanol fuel and gasoline. The flexible-fuel hybrid technology was developed in partnership with several Brazilian federal universities, and a prototype was tested for six months using a Toyota Prius as the development mule. Toyota announced plans to start production of a flex hybrid electric car for the Brazilian market in the second half of 2019.
The Renewable Fuels Association (RFA) has designed the PHEFFV to demonstrate the immense and immediate potential of using flex fuel technology to complement electrification. The concept vehicle offers a middle-ground solution that closes the divide between full BEVs and traditional ICE vehicles. RFA had its vehicle evaluated by accredited third-party organisations for life cycle analysis, emissions testing, and fuel economy. The PHEFFV allows the use of various fuel sources, including gasoline, mid-level ethanol blends like E30, flex fuels like E85, and electricity. This ensures the driver has easy access to all existing refuelling stations and can make use of virtually any fuel offered in the marketplace today.
While fuel economy (miles per gallon) is generally lower with increased levels of ethanol, many FFVs have improved acceleration performance when operating on higher ethanol blends. In addition, flex-fuel vehicles don't experience a loss in performance when using E85 fuel. In fact, some even generate increased torque and horsepower.
Fuel Usage in NHRA Funny Cars: How Much Is Enough?
You may want to see also
Frequently asked questions
A flexible fuel car, also known as a flexible-fuel vehicle (FFV), is a car that has an internal combustion engine and can operate on gasoline and any blend of gasoline and ethanol up to 83%. The most common form of ethanol-based gas is E85, which typically contains 51% to 83% ethanol depending on the region and season.
One advantage of a flexible fuel car is that it can burn any proportion of fuel mixture in the combustion chamber. This means that you can use any combination of gasoline and ethanol, including 100% unleaded gas or 85% ethanol. Flexible fuel cars can also have improved acceleration performance when operating on higher ethanol blends. Additionally, consumers who drive flexible fuel cars may receive tax credits that can reduce or eliminate their tax obligations.
One concern about flexible fuel cars is their gas mileage. While some experts claim that their mileage is similar to regular fuel-powered vehicles, others argue that it is lower due to ethanol containing less energy. As a result, you may get fewer miles per gallon using ethanol. Furthermore, flexible fuel may not be available at all gas stations since it is not as economical as gasoline.
![[2-Pack] Reusable Ethanol Testing Kit - Wide Mouth Fuel Test Bottle for E85 and Ethanol Levels - Fewer Spills and Clear Results in Minutes - Test Hundreds of Times - Two Ethanol Test Bottles Included](https://m.media-amazon.com/images/I/71sU-J0V11L._AC_UL320_.jpg)
