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Dual-clutch Transmissions
A dual-clutch transmission (DCT) (sometimes referred to as a twin-clutch transmission) is a type of multi-speed motor vehicle, vehicle Transmission (mechanics), transmission system, that uses two separate clutches for odd and even gear train, gear sets. The design is often similar to two separate manual transmissions with their respective clutches contained within one housing, and working as one unit. In car and truck applications, the DCT functions as an automatic transmission, requiring no driver input to change gears. The first DCT to reach production was the ''Easidrive'' automatic transmission introduced on the Hillman_Minx#Audax_design_Hillman_Minx_(Series_I_to_Series_VI,_1956–1967), 1961 Hillman Minx mid-size car. This was followed by various eastern European tractors through the 1970s (using manual operation via a single clutch pedal), then the Porsche 962, Porsche 962 C racing car in 1985. The first DCT of the modern era was used in the 2003 Volkswagen Golf Mk4#R32 ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flywheel
A flywheel is a mechanical device that uses the conservation of angular momentum to store rotational energy, a form of kinetic energy proportional to the product of its moment of inertia and the square of its rotational speed. In particular, assuming the flywheel's moment of inertia is constant (i.e., a flywheel with fixed mass and second moment of area revolving about some fixed axis) then the stored (rotational) energy is directly associated with the square of its rotational speed. Since a flywheel serves to store mechanical energy for later use, it is natural to consider it as a kinetic energy analogue of an electrical Inductor. Once suitably abstracted, this shared principle of energy storage is described in the generalized concept of an accumulator. As with other types of accumulators, a flywheel inherently smooths sufficiently small deviations in the power output of a system, thereby effectively playing the role of a low-pass filter with respect to the mechanical veloc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Porsche
Dr. Ing. h.c. F. Porsche AG, usually shortened to Porsche (; see below), is a German automobile manufacturer specializing in luxury, high-performance sports cars, SUVs and sedans, headquartered in Stuttgart, Baden-Württemberg, Germany. The company is owned by Volkswagen AG, a controlling stake of which is owned by Porsche Automobil Holding SE, usually shortened to Porsche SE. Porsche's current lineup includes the 718, 911, Panamera, Macan, Cayenne and Taycan. The origins of the company date to the 1930s when German Bohemian automotive engineer Ferdinand Porsche founded Porsche with Adolf Rosenberger, a keystone figure in the creation of German automotive manufacturer and Audi precursor Auto Union, and Austrian businessman Anton Piëch, who was, at the time, also Ferdinand Porsche's son in law. In its early days, it was contracted by the German government to create a vehicle for the masses, which later became the Volkswagen Beetle. After World War II, when Ferd ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solenoid
upright=1.20, An illustration of a solenoid upright=1.20, Magnetic field created by a seven-loop solenoid (cross-sectional view) described using field lines A solenoid () is a type of electromagnet formed by a helix, helical coil of wire whose length is substantially greater than its diameter, which generates a controlled magnetic field. The coil can produce a uniform magnetic field in a volume of space when an electric current is passed through it. André-Marie Ampère coined the term ''solenoid'' in 1823, having conceived of the device in 1820. The French term originally created by Ampère is ''solénoïde'', which is a French transliteration of the Greek word '' σωληνοειδὴς'' which means ''tubular''. The helical coil of a solenoid does not necessarily need to revolve around a straight-line axis; for example, William Sturgeon's electromagnet of 1824 consisted of a solenoid bent into a horseshoe shape (similarly to an arc spring). Solenoids provide magnetic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electronics
Electronics is a scientific and engineering discipline that studies and applies the principles of physics to design, create, and operate devices that manipulate electrons and other Electric charge, electrically charged particles. It is a subfield of physics and electrical engineering which uses Passivity (engineering), active devices such as transistors, diodes, and integrated circuits to control and amplify the flow of electric current and to convert it from one form to another, such as from alternating current (AC) to direct current (DC) or from analog signal, analog signals to digital signal, digital signals. Electronic devices have significantly influenced the development of many aspects of modern society, such as telecommunications, entertainment, education, health care, industry, and security. The main driving force behind the advancement of electronics is the semiconductor industry, which continually produces ever-more sophisticated electronic devices and circuits in respo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electromagnetic Clutch
Electromagnetic clutches operate electrically but transmit torque mechanically. This is why they used to be referred to as electro-mechanical clutches. Over the years, EM became known as electromagnetic versus electro-mechanical, referring more about their actuation method versus physical operation. Since the clutches started becoming popular over 60 years ago, the variety of applications and clutch designs has increased dramatically, but the basic operation remains the same today. Single-face clutches make up approximately 90% of all electromagnetic clutch sales. Electromagnetic clutches are most suitable for remote operation since no mechanical linkages are required to control their engagement, providing fast, smooth operation. However, because the activation energy dissipates as heat in the electromagnetic actuator when the clutch is engaged, there is a risk of overheating. Consequently, the maximum operating temperature of the clutch is limited by the temperature rating of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hillman Minx
The Hillman Minx was a mid-sized family car that British car maker Hillman produced from 1931 to 1970. There were many versions of the Minx over that period, as well as badge engineered variants sold by Humber, Singer, and Sunbeam. From the mid-1950s to the mid-1960s, the Minx and its derivatives were the greatest-volume sellers of the "Audax" family of cars from Rootes, which also included the Singer Gazelle and Sunbeam Rapier. The final version of the Minx was the "New Minx" launched in 1967, which was part of the "Arrow" family and essentially a basic version of the Hillman Hunter. Generally, the Minx was available in four-door saloon and estate forms, with a 1496-cc engine. The Hillman Super Minx was a slightly larger model offered during the Audax era. Throughout the life of the Minx, there was usually an estate version—and, from 1954 to 1965, a short-wheelbase estate, the Hillman Husky, and a van derivative known as the Commer Cob. The Minx model name was rev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rootes Group
The Rootes Group was a British automobile manufacturer and, separately, a major motor distributors and dealers business. From headquarters in the West End of London, the manufacturer was based in the English Midlands, Midlands and the distribution and dealers business in the south of England. In the decade beginning 1928 the Rootes brothers, William Rootes, William and Reginald, made prosperous by their very successful distribution and servicing business, were keen to enter manufacturing for closer control of the products they were selling. With the financial support of Prudential plc, Prudential Assurance, the two brothers bought some well-known British motor manufacturers, including Hillman, Humber Limited, Humber, Singer Motors, Singer, Sunbeam Motor Car Company, Sunbeam, Talbot (automobile), Talbot, Commer and Karrier. At its height in 1960, Rootes had manufacturing plants in the Midlands at Coventry and Birmingham, in southern England at Acton, London, Acton, Luton and Du ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smiths Industries
Smiths or Smith's may refer to: Companies *Smith Electric Vehicles, or Smith's, a manufacturer of electric trucks *Smith's Food and Drug, or Smith's, an American supermarket chain ** Smith's Ballpark, a baseball stadium in Salt Lake City, Utah, U.S. named for the company *Smiths Group, a British engineering company **Smiths Aerospace, a former subdivision now called GE Aviation Systems **Smiths Medical, a former subdivision now part of ICU Medical * The Smith's Snackfood Company, an Australian snack food company owned by PepsiCo * WHSmith, or Smith's, a British retailer ** Smiths News, a British distributor of newspapers and magazines, demerged from WHSmith Other uses *Metalsmiths *The Smiths, an English rock band in the 1980s ** ''The Smiths'' (album), 1984 *Smith's Friends, a name for Brunstad Christian Church originating in Norway *Smith's (cycling team), a Belgian professional cycling team 1966–1968 *''The Smiths'', a 2014 sitcom pilot by Lee Mack See also * * *Smith (dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotland, Wales and Northern Ireland. The UK includes the island of Great Britain, the north-eastern part of the island of Ireland, and most of List of islands of the United Kingdom, the smaller islands within the British Isles, covering . Northern Ireland shares Republic of Ireland–United Kingdom border, a land border with the Republic of Ireland; otherwise, the UK is surrounded by the Atlantic Ocean, the North Sea, the English Channel, the Celtic Sea and the Irish Sea. It maintains sovereignty over the British Overseas Territories, which are located across various oceans and seas globally. The UK had an estimated population of over 68.2 million people in 2023. The capital and largest city of both England and the UK is London. The cities o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Citroën Traction Avant
The Citroën Traction Avant () is the world's first mass-produced, semi-monocoque bodied, front-wheel drive car. A range of mostly four-door saloon (automobile), saloons and executive cars, as well as longer wheelbased ''"Commerciale"'', and three row seating ''"Familiale"'' models, were produced with four- and six-cylinder engines, by French carmaker Citroën from 1934 to 1957. With some 760,000 units built, the Traction Avants were the first front-wheel drives made in such (six-figure) quantity. Whilst front-wheel drive and four-wheel independent suspension had been established in production cars by Auto Union, and subsequently by others a few years prior – the Traction Avant pioneered integrating these into a mass-production car with a crash resistant, largely unitary, monocoque body. Additionally, the car was also an early adopter of Rack and pinion#Steering, rack and pinion steering. Although the car's name ("Traction Avant" literally means "front traction") emphasized its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adolphe Kégresse
Adolphe Kégresse (1879, Héricourt, Haute-Saône - 1943) was a French military engineer who invented the half-track and dual clutch transmission. Born at Héricourt, and educated in Montbéliard, he moved in 1905 to Saint Petersburg, Russia to work for the Russian Tsar Nicholas II. To improve the mobility of the imperial car park, he invented the Kégresse track to modify normal motor vehicles into half-tracks. He was also a personal chauffeur of Tsar Nicholas II and the Head of the Mechanical Department of the Russian Imperial Garage at Tsarskoye Selo. The Aide-de-camp to Tsar Nicholas II, Prince Orlov wrote in a letter to the Tsar's Minister of the Court on May 15, 1914: "... I consider Kégresse an irreplaceable worker and I am afraid his leaving will be a great loss for the garage. Your Highness knows, of course, how much His Majesty appreciates Kégresse." In 1908, the architect Lipsky VA designed a second two-storeyed Art Nouveau building for the Russian Imperia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
