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VR6 Engine
VR6 engines are V6 piston engines with a narrow angle between the cylinder banks and a single cylinder head covering both banks of cylinders. Volkswagen Group introduced the first VR6 engine in 1991 and VR6 engines currently remain in production. From 1997 to 2006, Volkswagen also produced a five-cylinder VR5 engine based on the VR6. Description The name VR6 comes from the German initials for a V engine (German: ''V-Motor'') and a straight (inline) engine (German: ''Reihenmotor''), therefore the VR engine is described as a "Vee-Inline engine" (VR-Motor). VR6 engines share a common cylinder head for the two banks of cylinders. Only two camshafts are needed for the engine, regardless of whether the engine has two or four valves per cylinder. This simplifies engine construction and reduces costs. Since the cylinders are not located on the centreline of the combined cylinder head, the lengths of the intake and exhaust ports are different for each bank. Without compensation, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volkswagen Corrado
The Volkswagen Corrado is a compact four passenger (2+2), three door, front-engine, front-wheel-drive liftback coupe marketed by Volkswagen from 1988 until 1995, and manufactured by Karmann in Osnabrück, Germany. Designed by Herbert Schäfer, the Corrado overlapped and eventually superseded Volkswagen's Scirocco model. 97,521 Corrados were manufactured over the seven year production run. Overview The Corrado's floorpan is based on the A2 platform (i.e. Mark 2 Golf/Jetta) and, with the exception of VR6 models, all versions use the subframes, suspension, steering and braking components from the Volkswagen A2 platform model range. The VR6 uses suspension components from the A3 model range, including the rear axle assembly and some parts of the A3's 'plus' type front axle assembly. The subsequent wider front wheel track of the Corrado VR6 necessitated the fitting of new front wings with wider wheel arches and liners along with a new front bumper assembly. The Corrado is noted ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transverse Engine
A transverse engine is an engine mounted in a vehicle so that the engine's crankshaft axis is perpendicular to the direction of travel. Many modern front-wheel drive vehicles use this engine mounting configuration. Most rear-wheel drive vehicles use a longitudinal engine configuration, where the engine's crankshaft axis is parallel with the direction of travel, except for some Mid-engine design, rear-mid engine vehicles, which use a transverse engine and transaxle mounted in the rear instead of the front. Despite typically being used in light vehicles, it is not restricted to such designs and has also been used on Armoured fighting vehicle, armoured fighting vehicles to save interior space. History The Critchley Light car, Critchley light car, made by the Daimler Company, Daimler Motor Company in 1899, had a transverse engine with belt drive to the rear axle. The first successful transverse-engine cars were the two-cylinder DKW F1 series of cars, which first appeared in 1931. Du ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volkswagen Vento (A3)
The Volkswagen Vento is a small family car, the third generation of the Volkswagen Jetta and the successor to the Volkswagen Jetta (A2). For the third generation, the Jetta name was discontinued, and it was officially renamed the Volkswagen Vento in European countries, following the precedent of naming cars after winds, debuted in 1992. The Jetta 3 debuted in North America in 1993 after production delays and quality problems at the Volkswagen plant in Puebla, Mexico.Robson, p. 208 The name " Vento" means "wind" in both Portuguese and Italian. It went on sale in most of Europe in the first quarter of the year, though it did not arrive on the British market until September 1992. Because of the success of the second generation in North America, Volkswagen decided to keep the Jetta nameplate. However, in Europe the car was given its new name to appeal to a younger market. Styling was penned by a design team led by Herbert Schafer, and again the car became more aerodynamic than the prev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volkswagen Golf Mk3
The Volkswagen Golf Mk3 is a medium-sized compact family car. The third generation of the Volkswagen Golf and the successor to the Volkswagen Golf Mk2, which was produced by Volkswagen from August 1991 (for the 1992 model year) to 2002 (for Cabrio convertible). The Golf Mk3 was launched in mainland Europe in August 1991, in the United Kingdom in February 1992, and in North America in the spring of 1994. The delay in North America was due to Volkswagen's decision to supply U.S. and Canadian dealerships with Mk3 Golfs (and A3 Jetta's) from the VW plant in Puebla, Mexico. Quality control problems led Volkswagen of America to reject Golfs and Jetta's from Mexico. Thereafter, labor unrest at the plant delayed production. The third-generation Golf and Jetta first launched in North America as 1993 models in the San Diego, California area and in Canada, then in the autumn in the rest of North America as 1994 models. The Mk3 Cabrio replaced the Volkswagen Cabriolet. The Mk3 Cabrio co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volkswagen Passat B3
The third-generation Volkswagen Passat, known as Volkswagen Passat B3 or Volkswagen Passat 35i, was introduced in March 1988 in Europe, 1989 in North America, and 1995 in South America; it was also briefly available in Australia in 1991, when a total of 14 Passat GL 16V in sedan and wagon versions were sold by then importer TKM. Unlike the previous two generations of the Passat, the B3 was not available as a fastback - only 4-door sedan and 5-door station wagon versions were available, setting the precedent for the model for all subsequent generations to date. Its curvy looks were a contrast from the boxy appearance of its predecessor and owed much to the "jelly mould" style pioneered by Ford with the Sierra and Taurus. The lack of a grille, utilizing the bottom breather approach, made the car's front end styling reminiscent of older, rear-engined Volkswagens such as the 411, and also doubled as a modern styling trend. The styling was developed from the 1981 aerodynamic ( cd&nb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lancia V4 Engine
Italian automobile company Lancia was the first to manufacture cars with V4 and V6 engines in series-production. This started with a number of V4-engine families, that were produced from the 1920s through 1970s. The Lancia V4 pioneered the narrow-angle V engine design, more recently seen in Volkswagen's VR5 and VR6 engines. By using very shallow V-angles — between 10° and 20° — both rows of cylinders could be housed in an engine block with a single cylinder head, like a straight engine. A determining characteristic was the use of overhead camshafts (either single or double), in which a camshaft would serve the same function for all cylinders — in ''both'' cylinder banks. Lambda The first V4 was used in the Lambda from 1922 through 1931. It was a 20° narrow-angle aluminium design. All three engine displacements shared the same long stroke, and all were SOHC designs with a single camshaft serving both banks of cylinders. Engines: * , at 3250 rpm * , at 3250&n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Overhead Camshaft
An overhead camshaft (OHC) engine is a piston engine where 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 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; however an OHV ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Motronic
Motronic is the trade name given to a range of digital engine control units developed by Robert Bosch GmbH (commonly known as Bosch) which combined control of fuel injection and ignition in a single unit. By controlling both major systems in a single unit, many aspects of the engine's characteristics (such as power, fuel economy, drivability, and emissions) can be improved. Motronic 1.x Motronic M1.x is powered by various i8051 derivatives made by Siemens, usually SAB80C515 or SAB80C535. Code/data is stored in DIL or PLCC EPROM and ranges from 32k to 128k. 1.0 Often known as "Motronic basic", Motronic ML1.x was one of the first digital engine-management systems developed by Bosch. These early Motronic systems integrated the spark timing element with then-existing Jetronic fuel injection technology. It was originally developed and first used in the BMW 7 Series, before being implemented on several Volvo and Porsche engines throughout the 1980s. The components of the Motronic ML ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Firing Order
The firing order of an internal combustion engine is the sequence of ignition for the cylinders. In a spark ignition (e.g. gasoline/petrol) engine, the firing order corresponds to the order in which the spark plugs are operated. In a diesel engine, the firing order corresponds to the order in which fuel is injected into each cylinder. Four-stroke engines must also time the valve openings relative to the firing order, as the valves do not open and close on every stroke. Firing order affects the vibration, sound and evenness of power output from the engine and heavily influences crankshaft design. Cylinder numbering Numbering systems for car engines The numbering system for cylinders is generally based on the cylinder numbers increasing from the front to the rear of an engine (See engine orientation below). However, there are differences between manufacturers in how this is applied; some commonly used systems are as listed below. ;Straight engine Cylinders numbered from front ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crankshaft
A crankshaft is a mechanical component used in a piston engine to convert the reciprocating motion into rotational motion. The crankshaft is a rotating shaft containing one or more crankpins, that are driven by the pistons via the connecting rods. The crankpins are also called ''rod bearing journals'', and they rotate within the "big end" of the connecting rods. Most modern crankshafts are located in the engine block. They are made from steel or cast iron, using either a forging, casting or machining process. Design The crankshaft located within the engine block, held in place via main bearings which allow the crankshaft to rotate within the block. The up-down motion of each piston is transferred to the crankshaft via connecting rods. A flywheel is often attached to one end of the crankshaft, in order to smoothen the power delivery and reduce vibration. A crankshaft is subjected to enormous stresses, in some cases more than per cylinder. Crankshafts for single-cylin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compression Ratio
The compression ratio is the ratio between the volume of the cylinder and combustion chamber in an internal combustion engine at their maximum and minimum values. A fundamental specification for such engines, it is measured two ways: the static compression ratio, calculated based on the relative volumes of the combustion chamber and the cylinder when the piston is at the bottom of its stroke, and the volume of the combustion chamber when the piston is at the top of its stroke. The dynamic compression ratio is a more advanced calculation which also takes into account gasses entering and exiting the cylinder during the compression phase. Effect and typical ratios A high compression ratio is desirable because it allows an engine to extract more mechanical energy from a given mass of air–fuel mixture due to its higher thermal efficiency. This occurs because internal combustion engines are heat engines, and higher compression ratios permit the same combustion temperature to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engine Displacement
Engine displacement is the measure of the cylinder volume swept by all of the pistons of a piston engine, excluding the combustion chambers. It is commonly used as an expression of an engine's size, and by extension as a loose indicator of the power an engine might be capable of producing and the amount of fuel it should be expected to consume. For this reason displacement is one of the measures often used in advertising, as well as regulating, motor vehicles. It is usually expressed using the metric units of cubic centimetres (cc or cm3, equivalent to millilitres) or litres (l or L), orparticularly in the United States cubic inches (CID, cu in, or in3). Definition The overall displacement for a typical reciprocating piston engine is calculated by multiplying together three values; the distance travelled by the piston (the stroke length), the circular area of the cylinder, and the number of cylinders in the whole engine. The formula is: : \text = \text \times \frac \times ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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