An octane rating, or octane number, is a standard measure of a fuel's ability to withstand compression in an internal combustion engine without detonating. The higher the octane number, the more compression the fuel can withstand before detonating. Octane rating does not relate directly to the power output or the energy content of the fuel per unit mass or volume, but simply indicates gasoline's capability against compression.
A hydrogen vehicle is a vehicle that uses hydrogen fuel for motive power. Hydrogen vehicles include hydrogen-fueled space rockets, as well as ships and aircraft. Power is generated by converting the chemical energy of hydrogen to mechanical energy, either by reacting hydrogen with oxygen in a fuel cell to power electric motors or, less commonly, by burning hydrogen in an internal combustion engine.
A vehicle start-stop system or stop-start system automatically shuts down and restarts the internal combustion engine to reduce the amount of time the engine spends idling, thereby reducing fuel consumption and emissions. This is most advantageous for vehicles which spend significant amounts of time waiting at traffic lights or frequently come to a stop in traffic jams. Start-stop technology may become more common with more stringent government fuel economy and emissions regulations. This feature is present in hybrid electric vehicles, but has also appeared in vehicles which lack a hybrid electric powertrain. For non-electric vehicles fuel economy gains from this technology are typically in the range of 3–10%, potentially as high as 12%. In the United States, idling wastes approximately 14.8 billion liters of gasoline per year.
Dimethyl ether (DME; also known as methoxymethane) is the organic compound with the formula CH3OCH3, (sometimes ambiguously simplified to C2H6O as it is an isomer of ethanol). The simplest ether, it is a colorless gas that is a useful precursor to other organic compounds and an aerosol propellant that is currently being demonstrated for use in a variety of fuel applications. It is an isomer of ethanol.
A green vehicle, clean vehicle, eco-friendly vehicle or environmentally friendly vehicle is a road motor vehicle that produces less harmful impacts to the environment than comparable conventional internal combustion engine vehicles running on gasoline or diesel, or one that uses certain alternative fuels. Presently, in some countries the term is used for any vehicle complying or surpassing the more stringent European emission standards, or California's zero-emissions vehicle standards, or the low-carbon fuel standards enacted in several countries.
A flexible-fuel vehicle (FFV) or dual-fuel vehicle is an alternative fuel vehicle with an internal combustion engine designed to run on more than one fuel, usually gasoline blended with either ethanol or methanol fuel, and both fuels are stored in the same common tank. Modern flex-fuel engines are capable of burning any proportion of the resulting blend in the combustion chamber as fuel injection and spark timing are adjusted automatically according to the actual blend detected by a fuel composition sensor. Flex-fuel vehicles are distinguished from bi-fuel vehicles, where two fuels are stored in separate tanks and the engine runs on one fuel at a time, for example, compressed natural gas (CNG), liquefied petroleum gas (LPG), or hydrogen.
Several common ethanol fuel mixtures are in use around the world. The use of pure hydrous or anhydrous ethanol in internal combustion engines (ICEs) is only possible if the engines are designed or modified for that purpose, and used only in automobiles, light-duty trucks and motorcycles. Anhydrous ethanol can be blended with gasoline (petrol) for use in gasoline engines, but with high ethanol content only after minor engine modifications.
Shell Eco-marathon is a world-wide energy efficiency competition sponsored by Shell. Participants build automotive vehicles to achieve the highest possible fuel efficiency. There are two vehicle classes within Shell Eco-marathon: Prototype and UrbanConcept. There are three energy categories within Shell Eco-marathon: battery-electric, hydrogen fuel cell, and internal combustion engine. Prizes are awarded separately for each vehicle class and energy category. The pinnacle of the competition is the Shell Eco-marathon Drivers' World Championship, where the most energy-efficient UrbanConcept vehicles compete in a race with a limited amount of energy.
Various alcohols are used as fuel for internal combustion engines. The first four aliphatic alcohols are of interest as fuels because they can be synthesized chemically or biologically, and they have characteristics which allow them to be used in internal combustion engines. The general chemical formula for alcohol fuel is CnH2n+1OH.
Delhi Technological University (DTU), formerly known as the Delhi College of Engineering (DCE) is a state university in Rohini, Delhi, India. It was established in 1941 as Delhi Polytechnic. In 1952, it started giving degrees after being affiliated with the University of Delhi. The institute has been under the Government of Delhi since 1963 and was affiliated with the University of Delhi from 1952 to 2009. In 2009, the college was given university status, thus changing its name to Delhi Technological University.
A hybrid electric vehicle (HEV) is a type of hybrid vehicle that combines a conventional internal combustion engine (ICE) system with an electric propulsion system. The presence of the electric powertrain is intended to achieve either better fuel economy than a conventional vehicle or better performance. There is a variety of HEV types and the degree to which each function as an electric vehicle (EV) also varies. The most common form of HEV is the hybrid electric car, although hybrid electric trucks, buses, boats and aircraft also exist.
An alternative fuel vehicle is a motor vehicle that runs on alternative fuel rather than traditional petroleum fuels. The term also refers to any technology powering an engine that does not solely involve petroleum. Because of a combination of factors, such as environmental concerns, high oil-prices and the potential for peak oil, development of cleaner alternative fuels and advanced power systems for vehicles has become a high priority for many governments and vehicle manufacturers around the world.
Eco-Runner Team Delft is a Delft University of Technology student team, aiming to promote a sustainable future by building the world's most efficient hydrogen-powered car. At the end of the year, the team participates in the Shell Eco-marathon competition in order to assess the efficiency of the vehicle. Eco-Runner Team Delft won the competition in 2015 and 2022. In the competition there are two vehicle classes: Prototype and UrbanConcept. For years Eco-Runner Team Delft participated in the Shell Eco-marathon Prototype class competition where the goal is to cover a certain distance with the least amount of hydrogen. In the year 2019–2020, the team has decided to compete in a different competition; the Urban Concept class. This challenge offers the team the opportunity to design and build an efficient hydrogen-powered vehicle that is closer in appearance to modern city cars.
EcoCAR: The NeXt Challenge was a yearly competition from 2008 to 2011, that built on the 19-year history of U.S. Department of Energy (DOE) advanced vehicle technology competitions by giving engineering students the chance to design and build advanced vehicles to demonstrate cutting-edge automotive technologies, with the goal of minimizing the environmental impact of future personal transportation. The DOE has again joined General Motors (GM), the Government of Canada, and other sponsors for this new competition series, named the EcoCAR Challenge. Argonne National Laboratory, a DOE research and development facility, will organize and operate the EcoCAR Challenge. Some previous types of advanced vehicle technology competitions include FutureTruck, FutureCar, and Challenge X. these type of competitions are usually supported by one or more of the Big Three American Automobile Manufacturers.
The DNV Fuel Fighter is a battery electric car that was designed and built in Norway as a student project at the Norwegian University of Science and Technology (NTNU). It was built to compete in the Shell Eco Marathon. The purpose of the competition is to design a vehicle that can drive as far as possible on the least amount of fuel.
The Mizzou Hydrogen Car Team designs, builds and competes with an Urban Concept hydrogen fuel cell vehicle run by students at the University of Missouri in Columbia, Missouri. They recently competed with their vehicle named "Tigergen III" in the 2013 Shell Eco-Marathon. At the competition they achieved 8.8 mi/kWh which placed them 3rd in the UrbanConcept Hydrogen category. The team also won an off-track award for "Best Team Spirit"
The Dynamo 7.0 is the seventh generation car run by DTU Roadrunners to compete in the Urban Concept class in the Shell Eco-marathon Europe. The car is developed by students at the Technical University of Denmark with the single purpose of achieving the best fuel economy as possible.
The Dynamo 9.0 is the ninth-generation car run by DTU Roadrunners to compete in the Urban Concept class in the Shell Eco-marathon Europe. As same as the previous generation of Urban Concept cars developed by students at the Technical University of Denmark, it has the single purpose of achieving the best fuel economy as possible. The Dynamo 9.0 is the current workhorse of the DTU Roadrunners for the said competition.
The Duke Electric Vehicles (DEV) team is composed of undergraduates at Duke University's Pratt School of Engineering. The team designs, builds, and competes with a manned, electrically powered supermileage vehicle each year. The team was founded in 2011 and has competed in the Shell Eco-Marathon Americas for 7 years. On July 21, 2018, their hydrogen fuel cell vehicle, "Maxwell", achieved the world record for the most fuel efficient prototype vehicle with a fuel efficiency of 14,573 MPGe, previously set in 2005 by ETH Zurich's Pac-car II at 12,600 MPGe.
