|
Camless Piston Engine
A camless or free-valve piston engine is an engine that has poppet valves operated by means of electromagnetic, hydraulic, or pneumatic actuators instead of conventional cams. Actuators can be used to both open and close valves, or to open valves closed by springs or other means. Camshafts normally have one lobe per valve, with a fixed valve duration and lift. Although many modern engines use camshaft phasing, adjusting the lift and valve duration in a working engine is more difficult. Some manufacturers use systems with more than one cam lobe, but this is still a compromise as only a few profiles can be in operation at once. This is not the case with the camless engine, where lift and valve timing can be adjusted freely from valve to valve and from cycle to cycle. It also allows multiple lift events per cycle and, indeed, no events per cycle—switching off the cylinder entirely. Camless development Camless valve trains have long been investigated by several companies, including ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piston Engine
A reciprocating engine, more often known as a piston engine, is a heat engine that uses one or more Reciprocating motion, reciprocating pistons to convert high temperature and high pressure into a Circular motion, rotating motion. This article describes the common features of all types. The main types are: the internal combustion engine, used extensively in motor vehicles; the steam engine, the mainstay of the Industrial Revolution; and the Stirling engine for niche applications. Internal combustion engines are further classified in two ways: either a spark-ignition engine, spark-ignition (SI) engine, where the spark plug initiates the combustion; or a compression-ignition engine, compression-ignition (CI) engine, where the air within the cylinder is compressed, Adiabatic process, thus heating it, so that the heated air ignites fuel that is injected diesel engine, then or hot-bulb engine, earlier.''Thermodynamics: An Engineering Approach'' by Yunus A. Cengal and Michael A. Boles ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burmeister & Wain
Burmeister & Wain was a large established Danish shipyard and leading diesel engine producer headquartered in Copenhagen, Denmark. Founded by two Danes and an Englishman, its earliest roots stretch back to 1846. Over its 150-year history, it grew successfully into a strong company through the end of the 1960s. In the 1970s, global competitive pressures, particularly from the far east, began to take their toll. In 1980, B&W became MAN B&W Diesel A/S, part of MAN Diesel, MAN B&W Diesel Group, a subsidiary of the German corporation MAN SE, MAN AG, with operations worldwide. The company still maintains operations at three main sites in Denmark for manufacturing, servicing, and licensing of its two-stroke engines and complete propulsion systems. History Origins Hans Heinrich Baumgarten (1806–1875) was from the town of Halstenbek near Pinneberg, in the Duchy of Holstein, an area of Germany that was then under the rule of the king of Denmark. He was apprenticed as a coffin mak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saab AB
Saab AB (originally , , acronym SAAB), with subsidiaries collectively known as the Saab Group (), is a Swedish aerospace and defense company, defence company primarily operating from Sweden. The company is headquartered in Stockholm, but its development and manufacturing operations are undertaken in Linköping. The company was formally founded by AB Bofors in 1937, by reforming the aero engine division of company NOHAB (founded in 1930), located in Trollhättan, into a proper aircraft manufacturer. It would soon merge with aircraft manufacturer AB Svenska Järnvägsverkstädernas Aeroplanavdelning, ASJA (founded in 1931), located in Linköping, in 1940, which had it own design bureau and is considered the spiritual predecessor to today's Saab AB. This formed the SAAB-Concern (business), concern, with the factory in Trollhättan becoming ''SAAB/T'' and the factory in Linköping (previously ASJA) becoming ''SAAB/L'' and design headquarters. From 1947, Saab started producing autom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autocar (magazine)
''Autocar'' (stylized in all caps) is a weekly British automobile magazine published by Haymarket Media Group. It was first published in 1895 and refers to itself as "the world's oldest car magazine". Mark Tisshaw is editor and other team members include Steve Cropley, Rachel Burgess, James Attwood, Matt Prior, Matt Saunders and Felix Page. ''Autocar'' has several international editions, including China, India, New Zealand, and South Africa. History The publication was launched as ''The Autocar'' by Yattendon Group, Iliffe and Son Ltd. "in the interests of the mechanically propelled road carriage" on 2 November 1895 when, it is believed, there were only six or seven cars in the United Kingdom. L. J. K. Setright suggests that the magazine was set up by Henry Sturmey (1857–1930), Henry Sturmey as an organ of propaganda for Harry J. Lawson, founder of the Daimler Company and a journalist on the magazine in its early days. Henry Sturmey stood down as editor of ''The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ingenium Engine Family
The Ingenium family is a range of modular engines produced by Jaguar Land Rover, in both petrol and diesel variants. It uses a modular architecture making it possible to be produced in three-, four- and six-cylinder versions (built around individual 500 cc cylinders), depending on demand and requirements. The engines sourced from Ford were replaced by engines from Jaguar Land Rover's new Ingenium engine line from late 2015. Ingenium's design is configurable and flexible for longitudinal and transverse architectures and for front, rear, and all-wheel drive, together with auto and manual transmissions. Hybrid variants are set to be released in the future. Both single- and twin-turbo boosting solutions from Mitsubishi and BorgWarner are used. Particular emphasis has been placed on achieving exceptionally low internal friction, which is described as being 17% less than a current 2.2 L diesel. "Other details include roller bearings on cam and balancer shafts instead of mac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jaguar Land Rover
Jaguar Land Rover Automotive PLC is the holding company of Jaguar Land Rover, also known as JLR, and is a British multinational automobile manufacturer which produces luxury vehicles and SUVs and has its head office in Whitley, Coventry, United Kingdom. The principal activity of Jaguar Land Rover is the design, development, manufacture and sale of vehicles bearing the Jaguar and Land Rover marques. Both marques have long histories prior to their merger – Jaguar going back to the 1930s and Land Rover to the 1940s – first coming together in 1968 as part of the British Leyland conglomerate, later again independent of each other, and then as subsidiaries of BMW (in the case of Land Rover), and Ford Motor Company (Jaguar). In 2000, Rover Group was broken up by BMW and Land Rover was sold on to Ford Motor Company, becoming part of its Premier Automotive Group. Jaguar Land Rover has been a subsidiary of India based Tata Motors since they founded it as a holding company for the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Camcon Technology
Camcon Technology (also Camcon Auto) is a Cambridge-based company focused on the core research and development of the Camcon Binary Actuator, a new class of digital valve technology. It develops high-speed and low-energy control of liquid and gas used in the healthcare industry. About Camcon Camcon is based in the UK's Silicon Fen and was founded by Wladyslaw Wygnanski in 2000 as a vehicle to support the development and commercialisation of a new class of binary actuating technology. The Intellectual Property company aims to make the Camcon Binary Actuator a worldwide standard and 32 worldwide patents have already been granted. The company is developing products based on the Camcon Binary Actuator in a number of industrial markets, including oil & gas, medical, automotive and aviation, where its unique characteristics are deemed to offer the largest financial and technological return. Camcon is funded by Hit & Run Music Publishing, the management team behind the Genesis (ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diesel Cycle
The Diesel cycle is a combustion process of a reciprocating internal combustion engine. In it, fuel is ignited by heat generated during the compression of air in the combustion chamber, into which fuel is then injected. This is in contrast to igniting the fuel-air mixture with a spark plug as in the Otto cycle (four-stroke/petrol) engine. Diesel engines are used in aircraft, automobiles, power generation, diesel–electric locomotives, and both surface ships and submarines. The Diesel cycle is assumed to have constant pressure during the initial part of the combustion phase (V_2 to V_3 in the diagram, below). This is an idealized mathematical model: real physical diesels do have an increase in pressure during this period, but it is less pronounced than in the Otto cycle. In contrast, the idealized Otto cycle of a gasoline engine approximates a constant volume process during that phase. Idealized Diesel cycle The image shows a p–V diagram for the ideal Diesel cycle; wher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exhaust Gas
Exhaust gas or flue gas is emitted as a result of the combustion of fuels such as natural gas, gasoline (petrol), diesel fuel, fuel oil, biodiesel blends, or coal. According to the type of engine, it is discharged into the atmosphere through an exhaust pipe, flue gas stack, or propelling nozzle. It often disperses downwind in a pattern called an ''exhaust plume''. It is a major component of motor vehicle emissions (and from stationary internal combustion engines), which can also include crankcase blow-by and evaporation of unused gasoline. Air pollution from burning fossil fuels is estimated to kill over 5 million people each year. Motor vehicle emissions are a common source of air pollution and are a major ingredient in the creation of smog in some large cities. Composition The largest part of most combustion gas is nitrogen (N2), water vapor (H2O) (except with pure-carbon fuels), and carbon dioxide (CO2) (except for fuels without carbon); these are not toxic or noxiou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sulfur Oxide
Sulfur oxide Sulfur oxides (SOx) are a group of chemical compounds formed by the combination of sulfur and oxygen. The most common SOx are sulfur dioxide (SO2) and sulfur trioxide (SO3). SOx are produced naturally through volcanic activity and are also released into the atmosphere from human activities like burning fossil fuels and industrial processes. Sulfur oxide (SO''x'') refers to one or more of the following: * Lower sulfur oxides (S''n''O, S7O2 and S6O2) * Sulfur monoxide (SO) and its dimer, Disulfur dioxide (S2O2) * Sulfur dioxide Sulfur dioxide (IUPAC-recommended spelling) or sulphur dioxide (traditional Commonwealth English) is the chemical compound with the formula . It is a colorless gas with a pungent smell that is responsible for the odor of burnt matches. It is r ... (SO2) * Sulfur trioxide (SO3) * Higher sulfur oxides (SO3 and SO4 and polymeric condensates of them) * Disulfur monoxide (S2O) {{Authority control * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fluidics
Fluidics, or fluidic logic, is the use of a fluid to perform analog signal, analog or Digital data, digital operations similar to those performed with electronics. The physical basis of fluidics is pneumatics and hydraulics, based on the theoretical foundation of fluid dynamics. The term ''fluidics'' is normally used when devices have no moving parts, so ordinary hydraulic components such as hydraulic cylinders and spool valves are not considered or referred to as fluidic devices. A jet of fluid can be deflected by a weaker jet striking it at the side. This provides nonlinearity, nonlinear amplifier, amplification, similar to the transistor used in electronic digital logic. It is used mostly in environments where electronic digital logic would be unreliable, as in systems exposed to high levels of electromagnetic interference or ionizing radiation. Nanotechnology considers fluidics as one of its instruments. In this domain, effects such as fluid–solid and fluid–fluid interf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solenoid Valve
A solenoid valve is an electromechanically operated valve. Solenoid valves differ in the characteristics of the electric current they use, the strength of the magnetic field they generate, the mechanism they use to regulate the fluid, and the type and characteristics of fluid they control. The mechanism varies from linear action, plunger-type actuators to pivoted-armature actuators and rocker actuators. The valve can use a two-port design to regulate a flow or use a three or more port design to switch flows between ports. Multiple solenoid valves can be placed together on a manifold. Solenoid valves are the most frequently used control elements in fluidics. Their tasks are to shut off, release, dose, distribute or mix fluids. They are found in many application areas. Solenoids offer fast and safe switching, high-reliability, long service life, good medium compatibility of the materials used, low control power and compact design. Operation There are many valve design varia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
