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Hydraulic Launch Assist
Hydraulic Launch Assist (HLA) is the name of a hydraulic hybrid regenerative braking system for land vehicles produced by the Eaton Corporation. Background The HLA system recycles energy by converting kinetic energy into potential energy during deceleration ''via'' hydraulics, storing the energy at high pressure in an accumulator filled with nitrogen gas. The energy is then returned to the vehicle during subsequent acceleration thereby reducing the amount of work done by the internal combustion engine. This system provides considerable increase in vehicle productivity while reducing fuel consumption in stop-and-go use profiles like refuse vehicles and other heavy duty vehicles. Parallel vs. series hybrids The HLA system is called a parallel hydraulic hybrid. In parallel systems the original vehicle drive-line remains, allowing the vehicle to operate normally when the HLA system is disengaged. When the HLA is engaged, energy is captured during deceleration and released during ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydraulic Hybrid
Hydraulic hybrid vehicles (HHVs) use a pressurized fluid power source, along with a conventional internal combustion engine (ICE), to achieve better fuel economy in automobiles, fuel economy and reductions in vehicle emissions control, harmful emissions. They capture and reuse 70–80% of the vehicle's braking/decelerating energyHydraulic Hybrid Vehicles US EPA compared to 55% for electric hybrids. For trucks and buses, this can also be less expensive than electric systems, due to the price of Battery (electricity), batteries required for the latter. Hydraulic hybrid vehicle systems can also weigh less than electric systems, due to the high weight of the batteries. This can lead to a lower impact on payload capacity, especially for heavy gross vehicle weight rating, vehicle classes. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mechanical Energy
In Outline of physical science, physical sciences, mechanical energy is the sum of potential energy and kinetic energy. The principle of conservation of mechanical energy states that if an isolated system is subject only to conservative forces, then the mechanical energy is constant. If an object moves in the opposite direction of a conservative net force, the potential energy will increase; and if the speed (not the velocity) of the object changes, the kinetic energy of the object also changes. In all real systems, however, nonconservative forces, such as frictional forces, will be present, but if they are of negligible Magnitude (mathematics), magnitude, the mechanical energy changes little and its conservation is a useful approximation. In elastic collisions, the kinetic energy is conserved, but in inelastic collisions some mechanical energy may be converted into thermal energy. The equivalence between lost mechanical energy and an increase in temperature was discovered by Jame ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid Vehicles
A hybrid vehicle is one that uses two or more distinct types of power, such as submarines that use diesel when surfaced and batteries when submerged. Other means to store energy include pressurized fluid in hydraulic hybrids. The basic principle with hybrid vehicles is that the different motors work better at different speeds; the electric motor is more efficient at producing torque, or turning power, and the combustion engine is better for maintaining high speed than a typical electric motor. Switching from one to the other at the proper time while speeding up yields a win-win in terms of energy efficiency, such that it translates into greater fuel efficiency. Vehicle types Two-wheeled and cycle-type vehicles Mopeds, electric bicycles, and even electric kick scooters are a simple form of a hybrid, powered by an internal combustion engine or electric motor and the rider's muscles. Early prototype motorcycles in the late 19th century used the same principle. * In a paralle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green Vehicles
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 (such as Euro6), or California's zero-emissions vehicle standards (such as ZEV, ULEV, SULEV, PZEV), or the low-carbon fuel standards enacted in several countries. Green vehicles can be powered by alternative fuels and advanced vehicle technologies and include hybrid electric vehicles, plug-in hybrid electric vehicles, battery electric vehicles, compressed-air vehicles, hydrogen and fuel-cell vehicles, neat ethanol vehicles, flexible-fuel vehicles, natural gas vehicles, clean diesel vehicles, and some sources also include vehicles using blend ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Machine Design
''Machine Design'' () is an American trade magazine and website serving the OEM engineering market. Its print issues reach qualified design engineers and Engineering management, engineering managers twice a month. Key technologies covered include computer-aided design and manufacturing (CAD/CAM), electrical and electronics, fastening and joining, fluid power, manufacturing, engineered materials, mechanical engineering, and motion control. Today, ''Machine Design'' is owned by Informa, and has editorial offices based in New York, New York and Cleveland, Ohio, USA. History The inaugural issue of ''Machine Design'' coincided almost exactly with the 1929 stock-market crash and the beginning of the Great Depression. Although the nation was in the economic doldrums, there was significant design development taking place in almost all industrial segments including automotive, aircraft, farm equipment, home appliances, and industrial machinery. The onset of World War II came and brough ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peterbilt Motors
Peterbilt Motors Company is an American truck manufacturer. Established in 1939 from the acquisition of Fageol Truck and Motor Company, Peterbilt specializes in the production of heavy-duty ( Class 8) and medium-duty (Classes 5–7) commercial vehicles. The namesake of company founder T. A. "Al" Peterman, Peterbilt has operated as part of PACCAR since 1958, operating alongside sister division Kenworth Truck Company (though serving as one of the longest-running marketplace rivalries in American truck manufacturing). Peterbilt trucks are identified by a large red-oval brand emblem, in use since 1953. The company also uses a "bird"-style hood ornament on conventional-cab trucks, in use since 1965. Headquartered in Denton, Texas, the company also manufactures trucks at PACCAR facilities in Sainte-Thérèse, Quebec, Canada and Mexicali, Mexico. History Background In the first third of the 20th century, transportation in the lumber industry remained time-consuming, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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