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Daewoo S-Tec Engine
S-TEC or M-TEC is a low-displacement engine range co-developed by Suzuki and Daewoo Motors for use in micro and subcompact cars. The original version was a license-built version of the Suzuki F8B engine; later generations were derived from the original design in South Korea. S-TEC The first model was SOHC straight-three engine based on the powertrain of the Suzuki Alto. In 2002, the range was extended to and inline-four engines and updated with EGR valve to reduce emission. A new engine plant for the updated model T4 was built. The 1.0 version is used in Chevrolet Matiz and the 1.2 in the European Chevrolet Kalos. In 2004 the 0.8 and 1.0 engines were updated again. New intake and exhaust systems, along with low-friction aluminum cam followers with rollers were added, resulting in better economy. Applications: *1991-2001 Daewoo Tico/Fino *1998–present Chevrolet/Daewoo Matiz * Chevrolet/Daewoo Kalos S-TEC II For 2008, a new version dubbed S-TEC II is introduced w ...
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Daewoo Motors
Daewoo Motors ( ) was a South Korean Automotive industry, automotive company established in 1937 as "National Motors". The company changed its name several times until 1982 when it became "Daewoo Motors" following its acquisition by the Daewoo, Daewoo Group. After running into financial difficulties,Daewoo Motor plunges into bankruptcy
on ''The Guardian'', 8 Nov 2000
it sold most of its assets in 2002 to General Motors at $1.2 billion, becoming a subsidiary of the American company. In 2011, the name "Daewoo" was definitively removed with the company being renamed GM Korea and the Daewoo brand replaced by the Chevrolet marque.I ...
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GM Daewoo
GM Korea Company () is the South Korean subsidiary of American multinational corporation General Motors and the third largest automobile manufacturer in South Korea. GM Korea's roots go back to the former Daewoo Motors vehicle brand, which was split from its parent company, Daewoo, in 2002. In addition to importing vehicles for sale into South Korea, the company also operates three manufacturing facilities producing vehicles for the domestic market and for export. History Predecessors GM Korea's roots go back to the remnants of the Korean War and Shinjin Motors, which launched its business by rebuilding scrapped US military vehicles. Shinjin Motor was first established as National Motor in 1937 in Bupyeong-gu, Incheon, Japanese Korea. After changing its name to Saenara Motor in 1962, Saenara Motor was bought by Shinjin Industrial in 1965, which changed its name to Shinjin Motor after establishing a partnership with Toyota. After Toyota's withdrawal in 1972 (to keep doing ...
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Variable Length Intake Manifold
In internal combustion engines, a variable-length intake manifold (VLIM),variable intake manifold (VIM), or variable intake system (VIS) is an automobile internal combustion engine manifold technology. As the name implies, VLIM/VIM/VIS can vary the length of the intake tract in order to optimise power and torque across the range of engine speed operation, as well as to help provide better fuel efficiency. This effect is often achieved by having two separate intake ports, each controlled by a valve, that open two different manifolds – one with a short path that operates at full engine load, and another with a significantly longer path that operates at lower load. The first patent issued for a variable length intake manifold was published in 1958, US Patent US2835235 by Daimler Benz AG. There are two main effects of variable intake geometry: ;Swirl: Variable geometry can create a beneficial air swirl pattern, or turbulence in the combustion chamber. The swirling helps distrib ...
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Valvetrain
A valvetrain is a mechanical system that controls the operation of the intake and exhaust 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 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 the cylinders or cylinder ...
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Chevrolet Aveo
The Chevrolet Aveo ( ) is a five-passenger, front-drive subcompact car ( B-segment) marketed by General Motors (GM) since 2002 over two generations. Originally developed by South Korean manufacturer Daewoo Motors and marketed as the Daewoo Kalos (), the takeover of Daewoo by GM to form GM Daewoo Auto & Technology (GMDAT) resulted in the car's marketing in 120 countries under seven brands (Chevrolet, Daewoo, ZAZ, Holden, Pontiac, Ravon and Suzuki) — prominently as the Chevrolet Aveo. The second-generation Aveo, developed by GM Korea (formerly GMDAT), was introduced in 2011 and was also marketed as the Chevrolet Sonic in markets including the Americas, Japan, Middle East, South Africa and several Southeast Asian markets. Production of the second-generation model ended in October 2020. Since 2017, GM marketed the Chinese market Chevrolet Sail sedan in Mexico and other Central American countries as the Aveo. Developed by GM PATAC in China and produced by joint venture S ...
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Chevrolet Spark
The Chevrolet Spark () is a city car manufactured by General Motors's subsidiary GM Korea from 1998 to 2022. The vehicle was developed by Daewoo and introduced in 1998 as the Daewoo Matiz (). In 2002, General Motors purchased Daewoo Motors, which was marketing the vehicle with several GM marques and nameplates. The third generation was marketed globally, prominently under the Chevrolet brand in North America as the Chevrolet Spark and in Australia and New Zealand as the Holden Barina Spark. The fourth generation was launched in 2015, known as the Holden Spark in Australia and New Zealand. It also serves as the basis for the Opel Karl in Europe, Vauxhall Viva in the UK, and VinFast Fadil in Vietnam, the latter being manufactured under license. A limited-production all-electric version, the Chevrolet Spark EV, was released in the U.S. in selected markets in California and Oregon in June 2013. The Spark EV was the first all-electric passenger car marketed by General Motors since t ...
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Daewoo Tico
The Daewoo Tico is a city car produced by the South Korean automaker Daewoo Motors, Daewoo from 1991 to 2001. Overview The Daewoo Tico was based largely on the 1988 Suzuki Alto kei car. The car was equipped with a three-cylinder 796 cc Daewoo S-TEC engine, S-TEC engine - a South Korean-made version of the Suzuki F engine#F8B, Suzuki F8B engine - and came with either a five-speed manual transmission or three-speed automatic transmission (only in South Korea). The Tico was exported to European markets and was highly popular mainly in Eastern Europe. It was also exported to Latin America where it was named Daewoo Fino for some markets. It was especially popular in Peru, where it was one of the most popular car models used for Transport in Lima#Taxis, taxi services. Daewoo expanded to Western Europe at the beginning of 1995, but the Tico was never sold in those markets. Its successor, the Matiz, was launched globally in 1998 and went on to be a sales success. Over its years o ...
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Fuel Economy In Automobiles
The fuel economy of an automobile relates to the distance traveled by a vehicle and the amount of fuel consumed. Consumption can be expressed in terms of the volume of fuel to travel a distance, or the distance traveled per unit volume of fuel consumed. Since fuel consumption of vehicles is a significant factor in air pollution, and since the importation of motor fuel can be a large part of a nation's foreign trade, many countries impose requirements for fuel economy. Different methods are used to approximate the actual performance of the vehicle. The energy in fuel is required to overcome various losses ( wind resistance, tire drag, and others) encountered while propelling the vehicle, and in providing power to vehicle systems such as ignition or air conditioning. Various strategies can be employed to reduce losses at each of the conversions between the chemical energy in the fuel and the kinetic energy of the vehicle. Driver behavior can affect fuel economy; maneuvers s ...
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Cam (mechanism)
A cam is a rotating or sliding piece in a linkage (mechanical), mechanical linkage used especially in transforming rotary motion into linear motion. It is often a part of a rotating wheel (e.g. an eccentric wheel) or shaft (e.g. a cylinder with an irregular shape) that strikes a lever at one or more points on its circular path. The cam can be a simple tooth, as is used to deliver pulses of power to a steam hammer, for example, or an Eccentric (mechanism), eccentric disc or other shape that produces a smooth reciprocating (back and forth) motion in the ''Cam follower, follower'', which is a lever making contact with the cam. A cam timer is similar, and these were widely used for electric machine control (an electromechanical timer in a washing machine being a common example) before the advent of inexpensive electronics, microcontrollers, integrated circuits, programmable logic controllers and digital control. Camshaft The cam can be seen as a device that converts rotational mot ...
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Chevrolet Kalos
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's se ...
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Chevrolet Matiz
The Chevrolet Spark () is a city car manufactured by General Motors's subsidiary GM Korea from 1998 to 2022. The vehicle was developed by Daewoo and introduced in 1998 as the Daewoo Matiz (). In 2002, General Motors purchased Daewoo Motors, which was marketing the vehicle with several GM marques and nameplates. The third generation was marketed globally, prominently under the Chevrolet brand in North America as the Chevrolet Spark and in Australia and New Zealand as the Holden Barina Spark. The fourth generation was launched in 2015, known as the Holden Spark in Australia and New Zealand. It also serves as the basis for the Opel Karl in Europe, Vauxhall Viva in the UK, and VinFast Fadil in Vietnam, the latter being manufactured under license. A limited-production all-electric version, the Chevrolet Spark EV, was released in the U.S. in selected markets in California and Oregon in June 2013. The Spark EV was the first all-electric passenger car marketed by General Motors since t ...
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Inline-four Engine
A straight-four engine (also referred to as an inline-four engine) is a four-cylinder piston engine where cylinders are arranged in a line along a common crankshaft. The majority of automotive four-cylinder engines use a straight-four layout (with the exceptions of the flat-four engines produced by Subaru and Porsche) and the layout is also very common in motorcycles and other machinery. Therefore the term "four-cylinder engine" is usually synonymous with straight-four engines. When a straight-four engine is installed at an inclined angle (instead of with the cylinders oriented vertically), it is sometimes called a slant-four. Between 2005 and 2008, the proportion of new vehicles sold in the United States with four-cylinder engines rose from 30% to 47%. By the 2020 model year, the share for light-duty vehicles had risen to 59%. Design A four-stroke straight-four engine always has a cylinder on its power stroke, unlike engines with fewer cylinders where there is no power st ...
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