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Long-bolt Engine
A long-bolt or through-bolt engine is an internal combustion piston engine where, following usual practice, the cylinder head is held down by bolts or studs. Conventionally the cylinder head is bolted to the cylinder block and the crankshaft main bearings are in turn bolted to the crankcase by separate bolts.The cylinder block and crankcase may either be bolted together by a third set of fasteners, or more commonly today, cast together as a monobloc. In the long-bolt engine however, a ''single'' set of long bolts is used, spanning from the cylinder head right through to the crankshaft bearing caps. Origins Aircraft The long-bolt design began with aircraft engines, particularly those that combined high power and lightweight construction of aluminium alloy. These early engines used long studs from the crankcase to the cylinder heads. As most at this time used monobloc heads only one bolt would anyway be needed to join the two pieces, but a long fastener the full height of the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internal Combustion Piston Engine
An internal combustion engine (ICE or IC engine) is a heat engine in which the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber that is an integral part of the working fluid flow circuit. In an internal combustion engine, the expansion of the high-temperature and high-pressure gases produced by combustion applies direct force to some component of the engine. The force is typically applied to pistons ( piston engine), turbine blades (gas turbine), a rotor (Wankel engine), or a nozzle ( jet engine). This force moves the component over a distance, transforming chemical energy into kinetic energy which is used to propel, move or power whatever the engine is attached to. This replaced the external combustion engine for applications where the weight or size of an engine was more important. The first commercially successful internal combustion engine was created by Étienne Lenoir around 1860, and the first modern internal combustion engine, know ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mean Effective Pressure
The mean effective pressure (MEP) is a quantity relating to the operation of a reciprocating engine and is a measure of an engine's capacity to do work that is independent of engine displacement.Heywood, J. B., "Internal Combustion Engine Fundamentals", McGraw-Hill Inc., 1988, p. 50 When quoted as an ''indicated mean effective pressure'' (''IMEP''), it may be thought of as the average pressure acting on a piston during the different portions of its cycle. Derivation Let: :W = work per cycle in joule; :P = power output in watt; :p_\text = mean effective pressure in pascal; :V_\text = displacement volume in cubic metre; :n_\text = number of revolutions per power stroke (for a 4-stroke engine, n_\text =2);Wankel engines are four-stroke engines, so n_\text =2; the displacement V_\text is derived from the chamber volume V_\text by multiplying it with the number of rotary pistons i and 2: V_\text = 2 V_\text i (see Wolf-Dieter Bensinger: ''Rotationskolben-Verbrennungsmotoren'', Spring ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wet Liner
In an internal combustion engine, the engine block is the structure which contains the cylinders and other components. In an early automotive engine, the engine block consisted of just the cylinder block, to which a separate crankcase was attached. Modern engine blocks typically have the crankcase integrated with the cylinder block as a single component. Engine blocks often also include elements such as coolant passages and oil galleries. The term "cylinder block" is often used interchangeably with "engine block", although technically, the block of a modern engine (i.e. multiple cylinders integrated with another component) would be classified as a monobloc. __TOC__ Construction The main structure of an engine typically consists of the cylinders, coolant passages, oil galleries, crankcase, and cylinder head(s). The first production engines of the 1880s to 1920s usually used separate components for each of these elements, which were bolted together during engine assembly. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Head Gasket
In an internal combustion engine, a head gasket provides the seal between the engine block and cylinder head(s). Its purpose is to seal the combustion gases within the cylinders and to avoid coolant or engine oil leaking into the cylinders. Leaks in the head gasket can cause poor engine running and/or overheating. Purpose Within a water-cooled internal combustion engine, there are three fluids which travel between the engine block and the cylinder head: # Combustion gases (unburned air/fuel mixture and exhaust gases) in each cylinder # Water-based coolant in the coolant passages # Lubricating oil in the oil galleries Correct operation of the engine requires that each of these circuits do not leak or lose pressure at the junction of the engine block and the cylinder head. The head gasket is the seal that prevents these leaks and pressure losses. Types * Multi-Layer Steel (MLS): Most modern engines are produced with MLS gaskets. These consist of two to five (typically three) th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lotus Elise
The Lotus Elise is a two-seat, rear-wheel drive, mid-engined roadster conceived in early 1994 and released in September 1996 by the British manufacturer Lotus Cars. The Elise has a fibreglass body shell atop its bonded extruded aluminium chassis that provides a rigid platform for the suspension, while keeping weight and production costs to a minimum. It is capable of speeds up to . The Elise was named after Elisa Artioli, the granddaughter of Romano Artioli who was chairman of Lotus and Bugatti at the time of the car's launch. Production of the Elise, Exige and Evora ended in 2021, to be replaced by a new family of models. Series 1 The 1996 Lotus Elise weighed . Because of this low weight, it was able to accelerate 0- in 5.8 seconds despite its relatively low power output of . Braking and fuel consumption are also improved by the car's reduced weight. Cornering is helped by a low center of gravity height of 470 mm (18½"). Series 1 was designed by Julian Thomson, then ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MG F
The MG F and MG TF are mid-engined, rear wheel drive roadster cars that were sold under the MG marque by three manufacturers between 1995 and 2011. The MG F was the first new model designed as an MG since the MGB that was produced from 1962 to 1980, the marque spent the 1980s being used to denote performance models from then parent Austin Rover Group, and was briefly seen on the MG RV8, a limited edition relaunch of the MG MGB which was sold between 1993 and 1995. The MG F was initially designed by Rover Group during the period it was owned by British Aerospace and was brought to market after the business had been sold to the German car manufacturer BMW. The BMW owned Rover Group manufactured the model from 1995 to 2000. BMW broke up Rover Group in 2000, divesting the Rover and MG passenger car businesses to a management buy-out who formed the independent MG Rover business. MG Rover manufactured the MG F from 2000 onwards, heavily updating it to become the MG TF in 2002. M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Powertrain Ltd
Powertrain Ltd was a British company based in Birmingham which made some cars, manufactured and marketed car engines and transmissions. The company was owned by MG Rover Group and Phoenix Venture Holdings and was based in the South Works at Rover's Longbridge plant. The companies main products were the K-Series four-cylinder and six-cylinder Engines and the L-Series four-cylinder diesel engine. The company mainly produced engines for MG Rover between 2000 and 2005 but also supplied Land Rover with the L-Series and K-Series engines for the Land Rover Freelander which was developed by Rover Group in the 1990s during the ownership by BMW and British Aerospace. As well as Land Rover, K-Series engines were also supplied to many small mass production car companies like MG Rover such as FSO and SAPIA. History The company was formed as part of MG Rover Group after the sale of the Rover and MG assets from BMW to Phoenix Venture Holdings for £10.00 in 2000 when BMW broke up the Rover G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rover K Engine
The Rover K-series engine is a series of internal combustion engines built by Powertrain Ltd, a sister company of MG Rover. The engine was a inline-four engine, straight-four cylinder built in two forms, Overhead camshaft#Single overhead camshaft, SOHC and Overhead camshaft#Double overhead camshaft, DOHC, ranging from . Design history The K series was introduced in 1988 by Rover Group as a powerplant for the Rover 200 / 25, Rover 200 car. It was the second volume-production implementation of the low-pressure sand-casting (or LPS) technique in a new plant sited between East Works and Cofton Hackett. (The first volume application of the LPS process had been for the Rover M-series engine, M-16 cylinder head, produced in South Works, adjacent to the former forge). The LPS process pumped liquid aluminium into a chemically-bonded sand mould from below. This reduced oxide inclusions and gave a casting yield of around 90%, compared with 60% for more conventional gravity casting proces ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rover Group
The Rover Group plc was the British vehicle manufacturing conglomerate known as "BL plc" until 1986 (formerly British Leyland), which had been a state-owned company since 1975. It initially included the Austin Rover Group car business (comprising the Austin, Rover, Mini and MG marques), Land Rover Group, Freight Rover vans and Leyland Trucks. The Rover Group also owned the dormant trademarks from the many companies that had merged into British Leyland and its predecessors such as Triumph, Morris, Wolseley, Riley and Alvis. The Rover Group was owned by British Aerospace (BAe) from 1988 to 1994. In 1994, BAe sold the remaining car business of Rover Group plc to the German company BMW. The group was then broken up in 2000, when Ford acquired the Land Rover division, with the Rover and MG marques continuing with the much smaller MG Rover Group until 2005. Ownership of the original Rover Group marques is currently split between BMW (Germany), SAIC (China), and Tata Motors (India ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ladder Main Bearing
A ladder is a vertical or inclined set of rungs or steps used for climbing or descending. There are two types: rigid ladders that are self-supporting or that may be leaned against a vertical surface such as a wall, and rollable ladders, such as those made of rope or aluminium, that may be hung from the top. The vertical members of a rigid ladder are called stringers or rails (US) or stiles (UK). Rigid ladders are usually portable, but some types are permanently fixed to a structure, building, or equipment. They are commonly made of metal, wood, or fiberglass, but they have been known to be made of tough plastic. Historical usages Ladders are ancient tools and technology. A ladder is featured in a Mesolithic rock painting that is at least 10,000 years old, depicted in the Spider Caves in Valencia, Spain. The painting depicts two humans using a ladder to reach a wild honeybee nest to harvest honey. The ladder is depicted as long and flexible, possibly made out of some sort of gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fiat 903cc Engine
Fiat Automobiles S.p.A. (, , ; originally FIAT, it, Fabbrica Italiana Automobili di Torino, lit=Italian Automobiles Factory of Turin) is an Italian automobile manufacturer, formerly part of Fiat Chrysler Automobiles, and since 2021 a subsidiary of Stellantis through its Italian division Stellantis Italy. Fiat Automobiles was formed in January 2007 when Fiat S.p.A. reorganized its automobile business, and traces its history back to 1899 when the first Fiat automobile, the Fiat 4 HP, was produced. Fiat Automobiles is the largest automobile manufacturer in Italy. During its more than century-long history, it remained the largest automobile manufacturer in Europe and the third in the world after General Motors and Ford for over 20 years, until the car industry crisis in the late 1980s. In 2013, Fiat S.p.A. was the second largest European automaker by volumes produced and the seventh in the world, while FCA was the world's eighth-largest automaker. In 1970, Fiat Automobiles employe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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