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Hemi Engine
A hemispherical combustion chamber is a combustion chamber in the cylinder head of an internal combustion engine with a domed " hemispheric" shape. An engine featuring this type of hemispherical chamber is known as a hemi engine. In practice, shapes less than a full hemisphere are typically employed, as are variations (or faceting in parts) of a true hemispheric profile. The primary advantage of such shapes are increased compression (leading to greater power) and very large intake and exhaust valves (allowing better flow of intake and exhaust gasses, also resulting in improved volumetric efficiency and greater power); the primary disadvantages are complex valve trains (caused by valves being placed opposite one-another in a head) and expense (of machining the heads and pistons, and additional valve train components). While hemispherical combustion chambers are still found in the 2000s multi-valve arrangements (of four and even five valves per cylinder) and the popularity of ov ...
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SOHC Hemi Chamber
An overhead camshaft (OHC) engine is a piston engine in which the camshaft is located in the cylinder head above the combustion chamber. This contrasts with earlier overhead valve engines (OHV), where the camshaft is located below the combustion chamber in the engine block. ''Single overhead camshaft'' (SOHC) engines have one camshaft per cylinder bank, bank of cylinders. ''Dual overhead camshaft'' (DOHC, also known as "twin-cam") engines have two camshafts per bank. The first production car to use a DOHC engine was built in 1910. Use of DOHC engines slowly increased from the 1940s, leading to many automobiles by the early 2000s using DOHC engines. Design In an OHC engine, the camshaft is located at the top of the engine, above the combustion chamber. This contrasts the earlier overhead valve engine (OHV) and flathead engine configurations, where the camshaft is located down in the engine block. The valves in both OHC and OHV engines are located above the combustion chamber; ...
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Peugeot
Peugeot (, , ) is a French automobile brand owned by Stellantis. The family business that preceded the current Peugeot companies was established in 1810, making it the oldest car company in the world. On 20 November 1858, Émile Peugeot applied for the lion trademark. Armand Peugeot (1849–1915) built the company's first vehicle, a Steam car, steam-powered tricycle. In 1886, the company collaborated with Léon Serpollet, followed by the development of an internal combustion car in 1890, which used a Panhard-Daimler-Motoren-Gesellschaft, Daimler engine. The Peugeot family and company are originally from Sochaux, where Peugeot still operates a large manufacturing facility and the Musée de l'Aventure Peugeot, Peugeot Museum. Peugeot vehicles have received numerous international accolades, including six European Car of the Year awards. The brand also boasts over a century of success in motorsport, with victories including the Indianapolis 500 in 1913, 1916, and 1919. Peugeot Spo ...
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Crossflow Cylinder Head
A crossflow cylinder head is a cylinder head that features the intake and exhaust ports on opposite sides. The gases can be thought to flow across the head. This is in contrast to reverse-flow cylinder head designs that have the ports on the same side. Crossflow heads use overhead valves, but these can be actuated either by overhead camshafts, or by a valve-train, which has the camshafts in the cylinder block, and actuates the valves with push rods and rockers. File:Culasse.gif , Crossflow cylinder head, with twin overhead cams File:Overhead camshaft with rockers (Autocar Handbook, 13th ed, 1935).jpg, Cutaway view of the overhead camshaft, rockers and valves of a crossflow cylinder head File:4-Stroke-Engine.gif, Cross-section of a four-stroke engine showing the flow of gases across the cylinder head from the inlet port on the right to the exhaust port on the left, via the combustion chamber Advantages A crossflow head gives better performance than a Reverse-flow cylinder hea ...
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Poppet Valve
A poppet valve (also sometimes called mushroom valve) is a valve typically used to control the timing and quantity of petrol (gas) or vapour flow into or out of an engine, but with many other applications. It consists of a hole or open-ended chamber, usually round or oval in cross-section, and a plug, usually a disk shape on the end of a shaft known as a valve stem. The working end of this plug, the valve face, is typically ground at a 45° bevel to seal against a corresponding valve seat ground into the rim of the chamber being sealed. The shaft travels through a valve guide to maintain its alignment. A pressure differential on either side of the valve can assist or impair its performance. In exhaust applications higher pressure against the valve helps to seal it, and in intake applications lower pressure helps open it. Etymology The word poppet shares etymology with "puppet": it is from the Middle English ''popet'' ("youth" or "doll"), from Middle French ''poupette'', whic ...
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Cylinder Head
In a piston engine, the cylinder head sits above the cylinders, forming the roof of the combustion chamber. In sidevalve engines the head is a simple plate of metal containing the spark plugs and possibly heat dissipation fins. In more modern overhead valve and overhead camshaft engines, the head is a more complicated metal block that also contains the inlet and exhaust passages, and often coolant passages, valvetrain components, and fuel injectors. Number of cylinder heads A piston engine typically has one cylinder head per bank of cylinders. Most modern engines with a "straight" (inline) layout today use a single cylinder head that serves all the cylinders. Engines with a "V" layout or "flat" layout typically use two cylinder heads (one for each cylinder bank), however a small number of 'narrow-angle' V engines (such as the Volkswagen VR5 and VR6 engines) use a single cylinder head spanning the two banks. Most radial engines have one head for each cylind ...
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Jaguar XK Engine
The Jaguar XK is an inline 6-cylinder dual overhead camshaft (DOHC) engine produced by Jaguar Cars between 1949 and 1992. Introduced as a 3.4-litre, it earned fame on both the road and track, being produced in five hemispherical head displacements between 2.4 and 4.2-litres for Jaguar passenger cars, with other sizes being made by Jaguar and privateers for racing. A de-rated version was also used in certain military vehicles built by Alvis and Daimler. Early development Prior to World War II, SS Cars (which changed its name to ''Jaguar'' in 1945) used three engines produced by the Standard Motor Company: a 1.5-litre 4-cylinder and 6-cylinder engines of 2.5 and 3.5 litres. Sir William Lyons and his engine designers; William Heynes (Chief Engineer), Walter Hassan, Claude Baily, and Harry Weslake are widely reported to have discussed a new range of replacements whilst fire-watching on the roof of the SS factory in Swallow Road, Coventry, during German World War II b ...
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Harry Miller (auto Racing)
Harold Arminius Miller (December 9, 1875 – May 3, 1943), commonly called Harry, was an American race car designer and builder who was most active in the 1920s and 1930s. Griffith Borgeson called him "the greatest creative figure in the history of the American racing car". Cars built by Miller won the Indianapolis 500 nine times, and other cars using his engines won three more. Millers accounted for 83% of the Indy 500 fields between 1923 and 1928. Biography Miller was born on December 9, 1875, in Menomonie, Wisconsin, to Jacob Miller (1833–1900) and Martha Ann (Tuttle) Miller (c1835–1922). Miller's first work in the automotive business was with the short-lived Yale Automobile Company. From Yale he moved to Lansing, Michigan, to work for motoring pioneer Ransom E. Olds at Oldsmobile, where he was employed as a race mechanic during the early Vanderbilt cup races. After a poor 1906 race season, Miller left for Los Angeles, California, to open a small machine shop speci ...
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Toyota V Engine
Toyota Motor Corporation's V family of engines were a longitudinally-mounted V8 engine design. They were used from the 1960s through 1997. The V family engine was used in the prestigious Toyota Century. Toyota had worked with Yamaha to produce the first Japanese full aluminum alloy block engine. The V family is often referred to as the "Toyota Hemi" as the engine features a cylinder head design with approximately hemispherical combustion chambers. The V engine was first used in the Crown Eight from 1964 to 1967 as part of the second generation Crown range. Thereafter the Crown Eight was replaced by the upmarket Toyota Century. The 3V, 4V and 5V engines were used in the Toyota Century up until 1997, when it got a complete redesign and replaced the V8 for the 5.0 L 1GZ-FE V12. The V series engines, like several Toyota Motor Corporation is a Japanese Multinational corporation, multinational Automotive industry, automotive manufacturer headquartered in Toyota City, Ai ...
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Toyota T Engine
The Toyota T series is a family of inline-4 automobile engines manufactured by Toyota beginning in 1970 and ending in 1985. It started as a pushrod overhead valve (OHV) design and later performance oriented twin cam (DOHC) variants were added to the lineup. Toyota had built its solid reputation on the reliability of these engines. The '' 4T-GTE'' variant of this engine allowed Toyota to compete in the World Rally Championship in the early 1980s, making it the first Japanese manufacturer to do so. Race engines based on the 2T-G include the 100E and 151E. *All T engines utilize a timing chain and have a cast iron block with an alloy cylinder head with hardened valve seats and a hemispherical combustion chamber design (HEMI). *All T engines are carburetted except those with electronic fuel injection, "E" designation. *All T engines use a 2 valve OHV design except those with a DOHC performance head, "G" designation. *The 12T/13T has a sub-cylinder directly behind the spark plug t ...
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Peugeot 403
The Peugeot 403 is a mid-size car manufactured and marketed by Peugeot between May 1955 and October 1966. A total of 1,214,121 of all types, including commercial models, were produced, making it the first Peugeot to exceed one million in sales. History The 403 debuted as a sedan/saloon on 20 April 1955 at the Trocadéro Palace in Paris. For several months before it was launched, numerous 403s, their badges removed, were driving on the roads near the manufacturer's Sochaux factory. They became so familiar that the locals no longer noticed them, but attracted the Paris motoring press to a town usually of little interest to the national media. The TN3 engine size gave the car a " tax horsepower" of 8 CV, which placed it a class below the soon-to-be-replaced 11 CV Citroën Traction, but at least one class above the small cars produced by the principal competitor manufacturers. When it was first shown, and until after 1958, the leading edge of car's nose carried an angular, forwar ...
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Bristol Cars
Bristol Cars was a British manufacturer of hand-built luxury cars headquartered in Bristol, Bristol, England. It was formed from the car division of the Bristol Aeroplane Company after the World War II, Second World War and later became independent as Bristol Cars Limited. After being placed in receivership and being taken over in 2011, it entered liquidation in February 2020. Bristol was always a low-volume manufacturer; the most recent published official production figures were for 1982, which stated that 104 cars were produced in that year. The company also had only one sales showroom, on the corner of Kensington High Street and Holland Road, London, Holland Road in London. The company suspended manufacturing in March 2011, when Administration (law), administrators were appointed, 22 staff were made redundant at the factory in Filton, Bristol and subsequently the company was dissolved. In April 2011, a new company was formed by the administrator to sell the original assets ...
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Stutz Motor Company
The Stutz Motor Car Company was an American automobile manufacturer based in Indianapolis, Indiana that produced high-end sports and luxury cars. The company was founded in 1911 as the Ideal Motor Car Company before merging with the Stutz Auto Parts Company in 1913. Due to the pressures of the Great Depression, the Stutz company went defunct in 1938. The Stutz Motor Car Company produced roughly 39,000 automobiles in their Indianapolis factory during their existence. ''Note:'' This includes The Stutz brand was revived in 1968 as Stutz Motor Car of America, with a focus on producing Neoclassic automobiles. The company is still in existence, but sales of factory-produced vehicles ceased in 1995. History The Ideal Motor Car Company, organized in June 1911 by Harry C. Stutz with his friend, Henry F. Campbell, began building Stutz cars in Indianapolis in 1911.Listing Statements of the New York Stock Exchange, September 13, 1916. They set this business up after a car built by ...
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