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Four-stroke Engine
A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either direction. The four separate strokes are termed: #Intake: Also known as induction or suction. This stroke of the piston begins at top dead center (T.D.C.) and ends at bottom dead center (B.D.C.). In this stroke the intake valve must be in the open position while the piston pulls an air-fuel mixture into the cylinder by producing vacuum pressure into the cylinder through its downward motion. The piston is moving down as air is being sucked in by the downward motion against the piston. #Compression: This stroke begins at B.D.C, or just at the end of the suction stroke, and ends at T.D.C. In this stroke the piston compresses the air-fuel mixture in preparation for ignition during the power stroke (below). Both the intake and exhaust valves are close ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philippe Le Bon
Philippe le Bon (or Lebon) (D'Humbersin) (May 29, 1767 – December 1, 1804) was a French engineer, born in Brachay, France. There is much confusion about his life and accomplishments. His main contributions were improvements to steam engines and industrializing the extraction of lighting gas from wood. Following details published in readings for young people, Lebon has long been purported to have been assassinated on the eve of Napoleon's crowning ceremony, at the beginning of December 1804.Fetter, Johann. ''Lehrgang der französischen Sprache'' 211pp (1897). ''(in french)''. Available online aarchive.org p 85: "''Philippe Lebon mourut assassiné, on ne sait par qui, en 1804.''" While the actual time of death seems to be December 1 at 10 am, there are no contemporary evidence to sustain the story: legal documents produced by the Archives Nationales upon the 150th jubilee of Lebon make it clear that neither the engineer's servant, Euphrasie Hubert, nor the justice practitioner c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Density
Power density is the amount of power (time rate of energy transfer) per unit volume. In energy transformers including batteries, fuel cells, motors, power supply units etc., power density refers to a volume, where it is often called volume power density, expressed as W/m3. In reciprocating internal combustion engines, power density (power per swept volume or brake horsepower per cubic centimeter) is an important metric, based on the ''internal'' capacity of the engine, not its external size. Examples See also * Surface power density, energy per unit of area * Energy density, energy per unit volume * Specific energy, energy per unit mass *Power-to-weight ratio Power-to-weight ratio (PWR, also called specific power, or power-to-mass ratio) is a calculation commonly applied to engines and mobile power sources to enable the comparison of one unit or design to another. Power-to-weight ratio is a measuremen .../specific power, power per unit mass ** Specific absorption ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Atkinson (inventor)
James Atkinson (1846 – 1914) of Hampstead was a British engineer who invented several engines with greater efficiency than the Otto cycle. The Atkinson cycle engines were named the "Differential 1882", "Cycle 1887" and "Utilite 1892". The most well-known of Atkinson's engines is the "Cycle 1887", patented in 1887. By use of variable engine strokes from a complex crankshaft, Atkinson was able to increase the efficiency of his engine, at the cost of some power, over traditional Otto-cycle engines. He was awarded the John Scott Medal of The Franklin Institute in 1889. See also *History of the internal combustion engine Various scientists and engineers contributed to the development of internal combustion engines. In 1791, the English inventor John Barber patented a gas turbine. In 1794 Thomas Mead patented a gas engine. Also in 1794 Robert Street patented an in ... Notes Further reading External links James Atkinson at Find A Grave- personal details 1846 birt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
T Cycle AtkinsonMiller
T, or t, is the twentieth letter in the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ''tee'' (pronounced ), plural ''tees''. It is derived from the Semitic Taw 𐤕 of the Phoenician and Paleo-Hebrew script (Aramaic and Hebrew Taw ת/𐡕/, Syriac Taw ܬ, and Arabic ت Tāʼ) via the Greek letter τ (tau). In English, it is most commonly used to represent the voiceless alveolar plosive, a sound it also denotes in the International Phonetic Alphabet. It is the most commonly used consonant and the second most commonly used letter in English-language texts. History ''Taw'' was the last letter of the Western Semitic and Hebrew alphabets. The sound value of Semitic ''Taw'', Greek alphabet Tαυ (''Tau''), Old Italic and Latin T has remained fairly constant, representing in each of these; and it has also kept its original basic shape in most of these alphabets. Use in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prius2004
The is a car built by Toyota which has a hybrid drivetrain, combining an internal combustion engine with an electric motor. Initially offered as a four-door sedan, it has been produced only as a five-door liftback since 2003. In 2007, the United States Environmental Protection Agency (EPA) and California Air Resources Board (CARB) rated the Prius as among the cleanest vehicles sold in the United States on the basis of smog-forming emissions. The 2018 model year Prius Eco ranked as the second-most-fuel-efficient gasoline-powered car without plug-in capability available in the US that year, following the Hyundai Ioniq Blue hybrid. The Prius first went on sale in Japan in 1997, and was available at all four Toyota Japan dealership chains, making it the first mass-produced hybrid vehicle. It was subsequently introduced worldwide in 2000. Toyota sells the Prius in over 90 markets, with Japan and the United States being its largest markets. Global cumulative Prius liftback s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daimler-Benz
The Mercedes-Benz Group AG (previously named Daimler-Benz, DaimlerChrysler and Daimler) is a German multinational automotive corporation headquartered in Stuttgart, Baden-Württemberg, Germany. It is one of the world's leading car manufacturers. Daimler-Benz was formed with the merger of Benz & Cie. and Daimler Motoren Gesellschaft in 1926. The company was renamed DaimlerChrysler upon acquiring the American automobile manufacturer Chrysler Corporation in 1998, and was again renamed Daimler AG upon divestment of Chrysler in 2007. In 2021, Daimler AG was the second-largest German automaker and the sixth-largest worldwide by production. In February 2022, Daimler was renamed Mercedes-Benz Group. The Mercedes-Benz Group's marques are Mercedes-Benz for cars and vans (including Mercedes-AMG and Mercedes-Maybach) and Smart. It has shares in other vehicle manufactures such as Daimler Truck, Denza, BAIC Motor and Aston Martin. By unit sales, the Mercedes-Benz Group is the t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daimler-Motoren-Gesellschaft
Daimler-Motoren-Gesellschaft (abbreviated as DMG, also known as ''Daimler Motors Corporation'') was a German engineering company and later automobile manufacturer, in operation from 1890 until 1926. Founded by Gottlieb Daimler (1834–1900) and Wilhelm Maybach (1846–1929), it was based first in Cannstatt (today Bad Cannstatt, a city district of Stuttgart). Daimler died in 1900, and their business moved in 1903 to Stuttgart- Untertürkheim after the original factory was destroyed by fire, and again to Berlin in 1922. Other factories were located in Marienfelde (near Berlin) and Sindelfingen (next to Stuttgart). The enterprise began to produce petrol engines but after the success of a small number of race cars built on contract by Wilhelm Maybach for Emil Jellinek, it began to produce the ''Mercedes'' model of 1902. After this automobile production expanded to become ''DMG'''s main product, and it built several models. Because of the post World War One German economic crisi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karl Benz
Carl Friedrich Benz (; 25 November 1844 – 4 April 1929), sometimes also Karl Friedrich Benz, was a German engine designer and automotive engineer. His Benz Patent Motorcar from 1885 is considered the first practical modern automobile and first car put into series production. He received a patent for the motorcar in 1886. His company Benz & Cie., based in Mannheim, was the world's first automobile plant and largest of its day. In 1926 it merged with Daimler Motoren Gesellschaft to form Daimler-Benz which produces the Mercedes-Benz among other brands. Benz is widely regarded as "the father of the car" and "father of the automobile industry". Early life Carl Benz was born Karl Friedrich Michael Vaillant, on 25 November 1844 in Mühlburg, now a borough of Karlsruhe, Baden-Württemberg, which is part of modern Germany. His parents were Josephine Vaillant and a locomotive driver, Johann Georg Benz, whom she married a few months later. According to German law, the child acq ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daimler Reitwagen
The Daimler ''Reitwagen'' ("riding car") or ''Einspur'' ("single track") was a motor vehicle made by Gottlieb Daimler and Wilhelm Maybach in 1885. It is widely recognized as the first motorcycle. Daimler is often called "the father of the motorcycle" for this invention. Even when the steam powered two-wheelers that preceded the ''Reitwagen'', the Michaux-Perreaux and Roper of 1867–1869, and the 1884 Copeland, are considered motorcycles, it remains nonetheless the first gasoline internal combustion motorcycle, and the forerunner of all vehicles, land, sea and air, that use its overwhelmingly popular engine type. First motorcycle? The ''Reitwagen''s status as the first motorcycle rests on whether the definition of motorcycle includes having an internal combustion engine. The ''Oxford English Dictionary'' uses this criterion. Even by that definition, the use of four wheels instead of two raises doubts. If the outriggers are accepted as auxiliary stabilizers, they point to a d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wilhelm Maybach
Wilhelm Maybach (; 9 February 1846 – 29 December 1929) was an early German engine designer and industrialist. During the 1890s he was hailed in France, then the world centre for car production, as the "King of Designers". From the late 19th century Wilhelm Maybach, together with Gottlieb Daimler, developed light, high-speed internal combustion engines suitable for land, water, and air use. These were fitted to the world's first motorcycle, motorboat, and after Daimler's death, a new automobile introduced in late 1902, the Mercedes model, built to the specifications of Emil Jellinek. Maybach rose to become technical director of the Daimler Motoren Gesellschaft (DMG) but did not get along with its chairmen. As a result, Maybach left DMG in 1907 to found Maybach-Motorenbau GmbH together with his son Karl in 1909; they manufactured Zeppelin engines. After the signing of the Versailles Treaty in 1919 the company started producing large luxury vehicles, branded as "Maybach". He d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gottlieb Daimler
Gottlieb Wilhelm Daimler (; 17 March 1834 – 6 March 1900) was a German engineer, industrial designer and industrialist born in Schorndorf ( Kingdom of Württemberg, a federal state of the German Confederation), in what is now Germany. He was a pioneer of internal-combustion engines and automobile development. He invented the high-speed liquid petroleum-fueled engine. Daimler and his lifelong business partner Wilhelm Maybach were two inventors whose goal was to create small, high-speed engines to be mounted in any kind of locomotion device. In 1883 they designed a horizontal cylinder layout compressed charge liquid petroleum engine that fulfilled Daimler's desire for a high speed engine which could be throttled, making it useful in transportation applications. This engine was called Daimler's Dream. In 1885 they designed a vertical cylinder version of this engine which they subsequently fitted to a two-wheeler, the first internal combustion motorcycle which was named the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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