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Subaru FB Engine
The Subaru FB engine is the third and current generation of gasoline boxer-4 engine used in Subaru automobiles, and was announced on 23 September 2010. It follows the previous generation EJ-series engine which was introduced in 1989 and the first generation EA-series which was introduced in 1966. By increasing piston stroke and decreasing piston bore, Subaru aimed to reduce emissions and improve fuel economy, while increasing and broadening torque output compared to the EJ-series. The Subaru FA engine series was derived later from the FB, but the two engine families share only a few common parts. In 2020, Subaru introduced the CB18 engine with improved efficiency to succeed the FB in several applications. Overview Unofficially, Subaru stated that "FB" stands for " FHI/Future and Brand New/Boxer". It was announced in September 2010 as the third generation (following the EA 1st and EJ 2nd generations) boxer engine family with 2.0 litre and 2.5 litre naturally aspirate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subaru
( or ; ) is the automaker, automobile manufacturing division of Japanese transportation conglomerate (company), conglomerate Subaru Corporation (formerly known as Fuji Heavy Industries), the Automotive industry#By manufacturer, twenty-first largest automaker by production worldwide in 2017. Subaru cars are known for their use of a flat engine, boxer engine layout in most vehicles above 1,500 cc. The Symmetrical All Wheel Drive drive-train layout was introduced in 1972. Both became standard equipment for mid-size and smaller cars in most markets by 1996. The lone exception is the Subaru BRZ, BRZ, introduced in 2012 via a partnership with Toyota, which pairs the boxer engine with rear-wheel-drive. Subaru also offers turbocharged versions of their passenger cars, such as the Subaru WRX, WRX, Subaru Legacy, Legacy and Subaru Outback, Outback XT, Subaru Ascent, Ascent, and formerly the Subaru Legacy, Legacy GT and Subaru Forester, Forester XT. In Western markets, Subaru vehi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variable Valve Timing
In internal combustion engines, variable valve timing (VVT) is the process of altering the timing of a valve lift event, and is often used to improve performance, fuel economy or emissions. It is increasingly being used in combination with variable valve lift systems. There are many ways in which this can be achieved, ranging from mechanical devices to electro-hydraulic and camless systems. Increasingly strict emissions regulations are causing many automotive manufacturers to use VVT systems. Two-stroke engines use a power valve system to get similar results to VVT. Background theory The valves within an internal combustion engine are used to control the flow of the intake and exhaust gases into and out of the combustion chamber. The timing, duration and lift of these valve events has a significant impact on engine performance. Without variable valve timing or variable valve lift, the valve timing is the same for all engine speeds and conditions, therefore compromises are neces ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Double 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 en ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piston Stroke
In the context of an internal combustion engine, the term stroke has the following related meanings: * A phase of the engine's cycle (e.g. compression stroke, exhaust stroke), during which the piston travels from top to bottom or vice versa. * The type of power cycle used by a piston engine (e.g. two-stroke engine, four-stroke engine). * "Stroke length", the distance travelled by the piston during each cycle. The stroke length––along with bore diameter––determines the engine's displacement. Phases in the power cycle Commonly used engine phases or strokes (i.e. those used in a four-stroke engine) are described below. Other types of engines can have very different phases. Induction-intake stroke The induction stroke is the first phase in a four-stroke (e.g. Otto cycle or Diesel cycle) engine. It involves the downward movement of the piston, creating a partial vacuum that draws a air-fuel mixture (or air alone, in the case of a direct injection engine) into the combus ... [...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] |
Haymarket Media Group
Haymarket Media Group is a privately held media company headquartered in London. It has publications in the consumer, business and customer sectors, both print and online. It operates exhibitions allied to its own publications, and previously on behalf of organisations such as the BBC. The company expanded outside the UK in 1999. History Haymarket began in the 1950s, under the name Cornmarket Press. Clive Labovitch and Michael Heseltine – later a Cabinet minister under Margaret Thatcher and Deputy Prime Minister under John Major – who had met at university, started out with the 1957 ''Directory of Opportunities for Graduates'', and in 1959 relaunched ''Man About Town'', which was to become an influential (if unprofitable) men's consumer magazine. The company failed in its relaunch of the British news weekly ''Topic'', the title closing at the end of 1962, within three months of the takeover. The partners split in 1965, with Heseltine renaming his half of the business Haymar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autocar (magazine)
''Autocar'' (originally ''The Autocar'') is a weekly British automobile magazine published by the Haymarket Media Group. It was first published in 1895 and refers to itself as "the world's oldest car magazine". There are now several international editions, including for China, India, New Zealand, and South Africa. History The publication was launched as ''The Autocar'' by Iliffe and Son Ltd. "in the interests of the mechanically propelled road carriage" on 2 November 1895 when, it is believed, there were only six or seven cars in the United Kingdom. L. J. K. Setright suggests that the magazine was set up by Henry Sturmey as an organ of propaganda for Harry J. Lawson, founder of the Daimler Company and a journalist on the magazine in its early days. Henry Sturmey stood down as editor of ''The Autocar'' magazine and left the company in 1901. ''Autocar'' claims to have invented the road test in 1928 when it analysed the Austin 7 Gordon England Sunshine Saloon. ''Aut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hearst Corporation
Hearst Communications, Inc., often referred to simply as Hearst, is an American multinational mass media and business information conglomerate based in Hearst Tower in Midtown Manhattan, New York City. Hearst owns newspapers, magazines, television channels, and television stations, including the ''San Francisco Chronicle'', the ''Houston Chronicle'', ''Cosmopolitan'' and ''Esquire''. It owns 50% of the A&E Networks cable network group and 20% of the sports cable network group ESPN, both in partnership with The Walt Disney Company. The conglomerate also owns several business-information companies, including Fitch Ratings and First Databank. The company was founded by William Randolph Hearst as an owner of newspapers, and the Hearst family remains involved in its ownership and management. History The formative years In 1880, George Hearst, mining entrepreneur and U.S. senator, bought the '' San Francisco Daily Examiner.'' In 1887, he turned the ''Examiner'' over to his son, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gasoline Direct Injection
Gasoline direct injection (GDI), also known as petrol direct injection (PDI), is a mixture formation system for internal combustion engines that run on gasoline (petrol), where fuel is injected into the combustion chamber. This is distinct from manifold fuel injection systems, which inject fuel into the intake manifold. The use of GDI can help increase engine efficiency and specific power output as well as reduce exhaust emissions. The first GDI engine to reach production was introduced in 1925 for a low-compression truck engine. Several German cars used a Bosch mechanical GDI system in the 1950s, however usage of the technology remained rare until an electronic GDI system was introduced in 1996 by Mitsubishi for mass-produced cars. GDI has seen rapid adoption by the automotive industry in recent years, increasing in the United States from 2.3% of production for model year 2008 vehicles to approximately 50% for model year 2016. Operating principle Charge modes The 'charg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Car And Driver
''Car and Driver'' (''CD'' or ''C/D'') is an American automotive enthusiast magazine. In 2006 its total circulation was 1.23 million. It is owned by Hearst Magazines, who purchased prior owner Hachette Filipacchi Media U.S. in 2011. It was founded as ''Sports Cars Illustrated.'' The magazine is based in Ann Arbor, Michigan. History ''Car and Driver'' was founded as ''Sports Cars Illustrated'' in 1955. In its early years, the magazine focused primarily on small, imported sports cars. In 1961, editor Karl Ludvigsen renamed the magazine ''Car and Driver'' to show a more general automotive focus. ''Car and Driver'' once featured Bruce McCall, Jean Shepherd, and Brock Yates as columnists, and P. J. O'Rourke as a frequent contributor. Former editors include William Jeanes and David E. Davis, Jr., the latter of whom led some employees to defect in 1985 to create ''Automobile''. Rather than electing a Car of the Year, ''Car and Driver'' publishes its top ten picks each year ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Subaru Engines
Subaru uses a four or five character code to identify all of their engines. As of August 2022 these are the engines presently in models sold by Subaru * FB20D: 1995 cc DOHC, 2017+ Subaru Impreza, and 2018+ Subaru Crosstrek * FB25D: 2498 cc DOHC, 2019+ North American Subaru Forester, 2020+ North American Subaru Legacy, 2020+ North American Subaru Outback, and 2021+ North American Subaru Crosstrek * FA24D: 2,387 cc DOHC, 2022+ Subaru BRZ/Toyota 86 * FA24F: 2,387 cc DOHC, turbo, 2019+ USDM Subaru Ascent, 2020+ Subaru Legacy, and 2020+ Subaru Outback. 2021+ USDM Subaru WRX * CB18: 1795 cc DOHC, 2020 JDM Subaru Levorg, 2021 JDM Subaru Forester Two Cylinder Subaru EK engine The EK series was an inline twin cylinder engine. Early versions were air-cooled two-stroke cycle, later replaced with water-cooled configurations in 1971. The engine was upgraded to a four-stroke SOHC in 1973 to meet Japanese Government emission regulations, using the SEEC emissions s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Connecting Rod
A connecting rod, also called a 'con rod', is the part of a piston engine which connects the piston to the crankshaft. Together with the crank, the connecting rod converts the reciprocating motion of the piston into the rotation of the crankshaft. The connecting rod is required to transmit the compressive and tensile forces from the piston. In its most common form, in an internal combustion engine, it allows pivoting on the piston end and rotation on the shaft end. The predecessor to the connecting rod is a mechanic linkage used by water mills to convert rotating motion of the water wheel into reciprocating motion. The most common usage of connecting rods is in internal combustion engines or on steam engines. __TOC__ Origins The predecessor to the connecting length is the mechanical linkage used by Roman-era watermills. The earliest known example of this linkage has been found at the late 3rd century Hierapolis sawmill in Roman Asia (modern Turkey) and the 6th century ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
