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Straight-four
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 str ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volga (automobile)
The Volga () is an executive car that originated in the Soviet Union to replace the GAZ Pobeda in 1956. Their role in serving the Soviet nomenklatura made them a contemporary cultural icon. Several generations of the car have been produced. Despite the continuous modernisations, GAZ found it increasingly difficult to keep the ageing design competitive in a market economy. GAZ CEO Bo Andersson decided to discontinue the Volga range in 2010. __TOC__ First generation, the GAZ-M-21 The first generation Volga was developed as a replacement for the 1946 GAZ-M20 Pobeda mid-size car, based on a brief issued in 1951. The first pre-production batch left GAZ on 10 October 1956. It was built in three distinct series; in total 639,478 Volgas were built from 1956 until 1970. There was also an estate derivative (GAZ-22) and a rare, V8-engined version developed for the KGB's 9th Directorate as an escort vehicle for motorcades.Thompson, p.133. The first series, nicknamed the ''Star'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GM Iron Duke Engine
The Iron Duke engine (also called 151, 2500, Pontiac 2.5, and Tech IV) is a straight-4 piston engine built by the Pontiac Motor Division of General Motors from 1977 until 1993. Originally developed as Pontiac's new economy car engine, it was used in a wide variety of vehicles across GM's lineup in the 1980s as well as supplied to American Motors Corporation (AMC). The engine was engineered for fuel efficiency, smooth operation, and long life, not for performance. Total Duke engine production is estimated to be between 3.8 and 4.2 million units. Development At the time of the 1973 oil crisis the only engines Pontiac built were , , and versions of their V8 engine. Recognizing that future products would need to be smaller and more fuel-efficient, Pontiac engineers were tasked with developing a new engine that would be suitable for these future products. The engineers considered developing smaller displacement versions of the existing V8, a V6 derived from the V8, a V4 derive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ford Model T Engine
The Ford Model T used a sidevalve, reverse-flow cylinder head inline 4-cylinder engine. It was primarily a gasoline engine. It produced for a top speed of . It was built in-unit with the Model T's novel transmission (a planetary design), sharing the same lubricating oil. The T engine was known for its simplicity, reliability, and economy. The engine remained in production for many years, and millions of units were produced. The engine design's lifespan exceeded that of the Model T vehicle itself, with industrial, marine, and military applications extending its production run. The T engine is on the Ward's 10 Best Engines of the 20th Century list. Fuel choices and fuel economy The Model T engine was built as a gasoline engine. While not engineered specifically for multifuel ability, its simple, robust design allowed a modified engine to successfully run on a variety of combustible fuels including benzene, ethanol, or kerosene. According to Ford Motor Company, the Model T had ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Citroën DS
The Citroën DS () is a Front-mid-engine, front-wheel-drive layout, front mid-engined, front-wheel drive executive car manufactured and marketed by Citroën from 1955 to 1975, in fastback/sedan, wagon/estate, and convertible body configurations, across three series of one generation. Marketed with a less expensive variant, the Citroën ID, the DS was known for its aerodynamic, futuristic body design; unorthodox, quirky, and innovative technology, and set new standards in ride quality, car handling, handling, and braking, thanks to both being the first mass production car equipped with hydropneumatic suspension, as well as disc brakes. The 1967 series 3 also introduced ''directional headlights'' to a mass-produced car.After this feature was first introduced on the 1948 Tucker 'Torpedo', of which 50 were built. Italian sculptor and industrial designer Flaminio Bertoni and the French aeronautical engineer André Lefèbvre styled and engineered the car, and Paul Magès developed th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Secondary Balance
Engine balance refers to how the inertial forces produced by moving parts in an internal combustion engine or steam engine are neutralised with counterweights and balance shafts, to prevent unpleasant and potentially damaging vibration. The strongest inertial forces occur at crankshaft speed (first-order forces) and balance is mandatory, while forces at twice crankshaft speed (second-order forces) can become significant in some cases. Causes of imbalance Although some components within the engine (such as the connecting rods) have complex motions, all motions can be separated into reciprocating and rotating components, which assists in the analysis of imbalances. Using the example of an inline engine (where the pistons are vertical), the main reciprocating motions are: * Pistons moving upwards/downwards * Connecting rods moving upwards/downwards * Connecting rods moving left/right as they rotate around the crankshaft, however the lateral vibrations caused by these movemen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mitsubishi Astron Engine
The Mitsubishi Astron or 4G5/4D5 engine, is a series of Inline-four engine, straight-four internal combustion engines first built by Mitsubishi Motors in 1972. Engine displacement ranged from 1.8 to 2.6 litres, making it one of the largest four-cylinder engines of its time. Design It employed a hemispherical cylinder head, roller chain, chain-driven SOHC, single overhead camshaft (SOHC) and eight poppet valve, valves (two per cylinder). United States passenger car versions had a small secondary intake valve referred to as the "Jet Valve". This valve induced swirl in the intake charge, enabling the use of leaner fuel/air mixtures for lower emissions. It was designed as a cartridge containing the valve spring and seat which simply screwed into a threaded hole in the head, similar to a spark plug but inside the cam cover. The rocker arms for the intake valve were widened on the valve end to accommodate the cartridge, which was equipped with a very soft valve spring in order to avoid we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honda T360
The Honda T360 is a pickup truck from Honda. Introduced in June 1963, it was Honda's first production automobile, beating the S500 Sports by four months. There was also a larger-engined version called the T500, mainly sold in export. Overview The T360 used a 356 cc AK250E series DOHC inline-four engine also found in the Honda S360 roadster prototype, with which it also shared the chassis. The mid-mounted unit propelled the truck to a top speed of , and was accessed by lifting up the bench seat inside the cabin.''Honda T360/T500'' brochure (1964), p. 4. Honda Motor Company. Accessed aHonda Sports Registry The engine generated at 8,500 rpm, reflecting Honda's motorcycle heritage. A total of 108,920 T360s were produced from 1963 through August 1967, all painted in "May Blue". It has a wraparound, clamshell-style bonnet which leaves the headlights in place when opened. The similar but somewhat larger T500 used a 531 cc version of the engine, excluding it from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mitsubishi 4M4 Engine
The Mitsubishi 4M4 engine is a range of four-cylinder diesel piston engines from Mitsubishi Motors, first introduced in the second generation of their Montero/Pajero/Shogun SUVs. They superseded the previous '' 4D5'' engine family, main differences are enlarged displacements and the utilization of one or two over-head camshafts. Originally available only as a 2835 cc intercooled turbo, detail improvements in 1996 and a larger 3.2 litre option in 1999 served to improve power, torque, fuel economy and emissions. The final version has 3.0 litres swept volume and Common rail direct injection. 4M40 Inline 4-cylinder SOHC, bore x stroke = , , swirl combustion chamber Naturally aspirated Compression ratio 21.0:1, Zexel Distributor type injection pump, at 4000 rpm, at 2000 rpm Applications: * 1996–1999 Canter (lightest-duty), , at 2000 rpm Intercooled turbo gen 1 Compression ratio 21.0:1, at 4000 rpm, at 2000 rpm Applicat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flat-four Engine
A flat-four engine, also known as a horizontally opposed-four engine or boxer engine, is a four-cylinder piston engine with two banks of cylinders lying on opposite sides of a common crankshaft. The most common type of flat-four engine is the boxer-four engine, each pair of opposed pistons moves inwards and outwards at the same time. A boxer-four engine has perfect primary and secondary balance, however, the two cylinder heads means the design is more expensive to produce than a straight-four engine. There is a minor, secondary unbalanced rotational torque pulse in the plane of the pistons, when a piston pair at one end of the engine is at TDC and the other pair at BDC. The TDC pair creates a torque greater than the BDC pair, so the net unbalanced torque pulse is the difference. The difference in TDC vs BDC inertial forces is explained in the Engine balance section. Boxer-four engines have been used in cars since 1897, especially by Volkswagen and Subaru. They have also occasional ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alfa Romeo Twin Cam Engine
The Alfa Romeo Twin Cam engine is an all-alloy inline-four engine series produced by Alfa Romeo from 1954 to 1994. In Italian it is known as the "bialbero" ("twin-shaft"), and has also been nicknamed the "Nord" (North) engine in reference to its being built in Portello, Milan (later Arese, close to Milan), in the North of Italy and to distinguish it from the Alfa Romeo Boxer engine built in the South (Sud) for the Alfasud. History The Twin Cam's predecessor appeared in the 1950 Alfa Romeo 1900 and was an under-square inline four cylinder with a cast-iron block, an aluminium alloy crossflow cylinder head with double overhead cams and a 90° included angle between intake and exhaust valves. Development of that engine was overseen by Orazio Satta Puliga who would also helm development of its successor. The 1952 Disco Volante had a 2-litre DOHC four cylinder engine with an aluminium block and sleeves, but this seems to have been a custom version of the 1900 engine rather tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alfa Romeo 1750 GTV Engine
Alfa may refer to: Businesses and organisations Broadcasting * Alfa Radio, a Macedonian radio station * XHFAJ-FM, a Mexico City radio station better known as Alfa 91.3 * Alfa TV (Cypriot TV channel), a premium television service available in Cyprus * Alfa TV (North Macedonia) Industrial * ALFA (Mexico), a Mexican industrial conglomerate * Alfa Aesar, a chemical supply company Science and technology * Alfa (Lebanon), a Lebanese telecom company * Alfa Financial Software, a British software company * Alfa Romeo, an Italian luxury automobile manufacturer founded as A.L.F.A. Other businesses * Alfa (cigarette), an Italian brand * Alfa Brewery, a Dutch brewery * Alfa Group Consortium, a Russian privately owned investment group ** Alfa-Bank, the Alfa Group corporate treasury * Alfamart, an Indonesian retail company * Alfa Records, a Japanese record label * Alfa Co., a subsidiary of the Al Faisaliah Group People * Alfa (singer), an Italian singer and rapper * Isaac Alfa, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
