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Overhead Valve
An overhead valve engine, abbreviated (OHV) and sometimes called a pushrod engine, is a piston engine whose valves are located in the cylinder head above the combustion chamber. This contrasts with flathead (or "sidevalve") engines, where the valves were located below the combustion chamber in the engine block. Although an overhead camshaft (OHC) engine also has overhead valves, the common usage of the term "overhead valve engine" is limited to engines where the camshaft is located in the engine block. In these traditional OHV engines, the motion of the camshaft is transferred using pushrods (hence the term "pushrod engine") and rocker arms to operate the valves at the top of the engine. However, some designs have the camshaft in the cylinder head but still sit below or alongside the valves (the Ford CVH and Opel CIH are good examples), so they can essentially be considered overhead valve designs. Some early intake-over-exhaust engines used a hybrid design combining elemen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pushrod2
A valvetrain is a mechanical system that controls the operation of the intake and exhaust poppet valve, valves in an internal combustion engine. The intake valves control the flow of air/fuel mixture (or air alone for direct-injected engines) into the combustion chamber, while the exhaust valves control the flow of spent exhaust gases out of the combustion chamber once combustion is completed. Layout The valvetrain layout is largely dependent on the location of the camshaft. The common valvetrain configurations for piston engines, in order from oldest to newest, are: * Flathead engine: A single camshaft and the valves are located in the engine block below the cylinder (engine), cylinder or cylinder bank. * Overhead valve engine: A single camshaft remains in the block below the cylinder(s), however the valves are located in the cylinder head above the combustion chamber. * Overhead camshaft engine: Both the valves and one or more camshafts are located in the cylinder head above t ... [...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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variable Displacement
Variable displacement is an automobile engine technology that allows the engine displacement to change, usually by deactivating cylinders, for improved fuel economy. The technology is primarily used in large multi-cylinder engines. Many automobile manufacturers have adopted this technology as of 2005, although the concept has existed for some time prior to this. Theory of operation Cylinder deactivation is used to reduce the fuel consumption and emissions of an internal combustion engine during light-load operation. In typical light-load driving the driver uses only around 30 percent of an engine’s maximum power. In these conditions, the throttle valve is nearly closed, and the engine needs to work to draw air. This causes an inefficiency known as pumping loss. Some large capacity engines need to be throttled so much at light load that the cylinder pressure at top dead centre is approximately half that of a small 4-cylinder engine. Low cylinder pressure results in lower fuel e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercedes-Benz 500I Engine
The Mercedes-Benz 500I engine is a highly powerful, turbocharged, 3.4-liter, Indy car racing V-8 engine, designed, developed, and built by Ilmor, in partnership with Mercedes-Benz, specifically to compete in the 1994 Indianapolis 500. The Mercedes-Benz 500I engine was slightly lighter than the Ilmor 265D Indy V8 it replaced in the Penske PC-23, although because of its longer inlets, the 500I had a higher overall centre of gravity, thus changing the overall balance of the car a bit. The development and testing of the 500I engine, at that time called Ilmor 265E, took place in the utmost secrecy because there was a possibility of the turbocharger boost level being changed, or the engine being banned by the Indy 500 sanctioning body. Background Mercedes-Benz 500I Much to the surprise of competitors, media, and fans, Marlboro Team Penske arrived at the Indianapolis Motor Speedway with a brand new, secretly-built 209 cid Mercedes-Benz pushrod engine, which was capable of a r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1994 Indianapolis 500
The 78th Indianapolis 500 was held at the Indianapolis Motor Speedway in Speedway, Indiana on Sunday, May 29, 1994. The race was sanctioned by United States Auto Club (USAC), and was included as race number 4 of 16 of the 1994 PPG IndyCar World Series. For the second year in a row, weather was not a factor during the month. Only one practice day was lost to rain, and pole day was only partially halted due to scattered showers. Warm, sunny skies greeted race day. Al Unser Jr. won the race from the pole position, his second of two Indy 500 victories (1992, 1994). Much to the surprise of competitors, media, and fans, Marlboro Team Penske arrived at the Speedway with a brand new, secretly-built displacement Ilmor Mercedes-Benz pushrod engine, which was capable of nearly . Despite reliability issues with the engine and handling difficulties with the chassis, the three-car Penske team (Al Unser Jr., Emerson Fittipaldi and Paul Tracy) dominated most of the month, and practically t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honda
commonly known as just Honda, is a Japanese multinational corporation, multinational Conglomerate (company), conglomerate automotive manufacturer headquartered in Minato, Tokyo, Japan. Founded in October 1946 by Soichiro Honda, Honda has been the world's largest motorcycle manufacturer since 1959, reaching a production of 500 million . It is also the world's largest manufacturer of internal combustion engines measured by number of units, producing more than 14 million internal combustion engines each year. Honda became the second-largest Japanese automobile manufacturer in 2001. In 2015, Honda was the eighth largest automobile manufacturer in the world. The company has also built and sold the most produced motor vehicle in history, the Honda Super Cub. Honda was the first Japanese automobile manufacturer to release a dedicated luxury brand, Acura, on 27 March 1986. Aside from their core automobile and motorcycle businesses, Honda also manufactures garden equipment, marine eng ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chevrolet
Chevrolet ( ) is an American automobile division of the manufacturer General Motors (GM). In North America, Chevrolet produces and sells a wide range of vehicles, from subcompact automobiles to medium-duty commercial trucks. Due to the prominence and name recognition of Chevrolet as one of General Motors' global marques, "Chevrolet" or its affectionate nickname 'Chevy' or is used at times as a synonym for General Motors or its products, one example being the GM LS1 engine, commonly known by the name or a variant thereof of its progenitor, the Chevrolet small-block engine. Louis Chevrolet (1878–1941), Arthur Chevrolet (1884–1946) and ousted General Motors founder William C. Durant (1861–1947) started the company on November 3, 1911 as the Chevrolet Motor Car Company. Durant used the Chevrolet Motor Car Company to acquire a controlling stake in General Motors with a reverse merger occurring on May 2, 1918, and propelled himself back to the GM presidency. After Durant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wright Brothers
The Wright brothers, Orville Wright (August 19, 1871 – January 30, 1948) and Wilbur Wright (April 16, 1867 – May 30, 1912), were American aviation List of aviation pioneers, pioneers generally credited with inventing, building, and flying the world's first successful airplane. They made the first controlled, sustained flight of an engine-powered, Aircraft#Heavier-than-air – aerodynes, heavier-than-air aircraft with the ''Wright Flyer'' on December 17, 1903, four miles (6 km) south of Kitty Hawk, North Carolina, at what is now known as Kill Devil Hills, North Carolina, Kill Devil Hills. In 1904 the Wright brothers developed the ''Wright Flyer II'', which made longer-duration flights including the first circle, followed in 1905 by the first truly practical fixed-wing aircraft, the ''Wright Flyer III''. The brothers' breakthrough invention was their creation of a Flight dynamics (aircraft), three-axis control system, which enabled the pilot to steer the aircraft effec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flat-twin Engine
A flat-twin engine is a two-cylinder internal combustion engine with the cylinders on opposite sides of the crankshaft. The most common type of flat-twin engine is the boxer-twin engine, where both pistons move inwards and outwards at the same time. The flat-twin design was patented by Karl Benz in 1896 and the first production flat-twin engine was used in the ''Lanchester 8 hp Phaeton'' car released in 1900. The flat-twin engine was used in several other cars since, however a more common usage is in motorcycles; early models oriented the cylinders in line with the frame, however later models switched to the cylinders being perpendicular to the frame to provide even cooling across both cylinders. Flat-twin engines were also used in several aircraft up until the 1930s and in various stationary applications from the 1930s to the 1960s. The Australian lawnmower manufacturer Victa also produced a flat-twin engine push mower from August 1975 to 1980 dubbed the ‘Twin 500’, and lat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buick Model B
The Buick Model B was Buick's first model as an independent company, later becoming part of General Motors in 1908. It was built in Jackson, Michigan. A model B was exhibited in 1905 at the New York Auto Show as a promotion of the model C which would be the same. William C. Durant introduced the car himself at the exhibit, and took new car orders at the car show, raising sales from 37 cars in 1904 to 750 in 1905. It had a 2-cylinder, horizontally opposed engine – the world's first production OHV (overhead valve) engine – installed lengthwise within the frame, and had a planetary transmission with a cone clutch and two forward speeds, plus one reverse gear. The engine was rated at 21 bhp. In later years, it was renamed as improvements were made. The chassis A chassis (, ; plural ''chassis'' from French châssis ) is the load-bearing framework of a manufactured object, which structurally supports the object in its construction and function. An example of a chassis is a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marr (automobile)
The Marr Auto-Car was an automobile built in Elgin, Illinois by the Marr Auto-Car Company from 1902 to 1904. History The car was designed by early automobile pioneer Walter L. Marr who had worked as an engine designer for Buick in 1901 and went on to be Chief Engineer there from 1904 to 1918. The Marr was a two-seat runabout with a single-cylinder 1.7L engine that was mounted under the seat. The engine is one of the first known to have featured an overhead camshaft (OHC). The vehicle had the first tilt steering wheel, changeable speed gears on a planetary transmission and a revolutionary new carburetor A carburetor (also spelled carburettor or carburetter) is a device used by a gasoline internal combustion engine to control and mix air and fuel entering the engine. The primary method of adding fuel to the intake air is through the Ventu .... Factory price was $600, (). The plant burned to the ground in August 1904 with 14 cars inside. Only one Marr Auto-Car is extan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buick
Buick () is a division (business), division of the Automotive industry in the United States, American automobile manufacturer General Motors (GM). Started by automotive pioneer David Dunbar Buick in 1899, it was among the first American automobile brands and was the company that established General Motors in 1908. Before the establishment of General Motors, GM founder William C. Durant had served as Buick's general manager and major investor. With the demise of Oldsmobile in 2004, Buick became the oldest surviving American carmaker. Buick is positioned as a premium automobile brand, selling vehicles positioned below the flagship luxury Cadillac division. History Early years Buick is one of the oldest automobile brands in the world and is currently the oldest in the United States still active today. Autocar Company, Autocar, founded in 1897, is the oldest motor vehicle manufacturer in the western hemisphere; while originally an automobile maker, Autocar now builds heavy trucks. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
