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Audi F103 AI simulator
(@Audi F103_simulator)
Hub AI
Audi F103 AI simulator
(@Audi F103_simulator)
Audi F103
F103 is the internal designation for a series of car models produced by Auto Union in West Germany from 1965 to 1972, derived from the earlier DKW F102. To signify the change from a two-stroke to four-stroke engine, the DKW marque was dropped in favour of Audi, a name that had been dormant since before the Second World War.
The first model was launched simply as the Audi, later being renamed the Audi 72 (72 being the nominal power output of the engine in PS).
The more powerful Audi 80 and Audi Super 90 sports saloons (with 80 and 90 PS respectively) appeared in 1966: in 1968 the arrival of the less powerful Audi 60 completed the range. Breaking somewhat with the naming pattern, the Audi 60 has 55 PS (40 kW), although export versions produce 65 PS (48 kW).
The Audi 75 replaced both the Audi 72 and the Audi 80 from 1969 onwards.
In 1972 the F103 series was discontinued in favour of the "B1" Audi 80.
The F103 series were equipped exclusively with the M118 four-cylinder four-stroke engine. These were longitudinally mounted. This combination of front-wheel drive, which Auto Union's DKW brand had pioneered during the 1930s, and the longitudinal positioning of a four-cylinder engine would provide the basic template for Volkswagen's successful new Passat as well as the Audi models Audi 80 and Audi 100 after Volkswagenwerk AG acquired the Auto Union from Daimler-Benz late in 1964. Since the chassis on the F103 was taken from the DKW F102 with a three-cylinder two-stroke engine, the longer engine meant that the cooling system had to be offset to the left of the engine instead of the normal position in front of it. Because of the radiator's location, the front cylinder of the engine had a tendency to run cooler than the other three and as a consequence the spark plug tended to foul up, particularly if the engine was often used in city traffic. To avoid this, it was often recommended to run a hotter spark plug (with a lower heat range) in the front cylinder than in the other three.[citation needed]
The engines of the F103 series were developed by Daimler-Benz as part of a military project that never came to fruition. They were dubbed the Mitteldruckmotor (medium-pressure engines) because of their unusually high BMEP (mean effective pressure, as calculated from brake torque) values, which led to a good thermodynamic efficiency. The engines had spiral-formed intake channels that gave the fuel-air mixture a good swirl. The engine had Heron-type combustion chambers with broad squish bands, further enhancing the mixture swirl and aiding good combustion. These features made it possible to use very high compression ratios for the time. The initial engine version had a compression ratio of 11:1 for 98 RON fuel and even the engines intended for 92 RON fuel had a compression of 9:1, which was a very unusually high value for the time.[citation needed]
The car came with a four-speed manual transmission.
Audi F103
F103 is the internal designation for a series of car models produced by Auto Union in West Germany from 1965 to 1972, derived from the earlier DKW F102. To signify the change from a two-stroke to four-stroke engine, the DKW marque was dropped in favour of Audi, a name that had been dormant since before the Second World War.
The first model was launched simply as the Audi, later being renamed the Audi 72 (72 being the nominal power output of the engine in PS).
The more powerful Audi 80 and Audi Super 90 sports saloons (with 80 and 90 PS respectively) appeared in 1966: in 1968 the arrival of the less powerful Audi 60 completed the range. Breaking somewhat with the naming pattern, the Audi 60 has 55 PS (40 kW), although export versions produce 65 PS (48 kW).
The Audi 75 replaced both the Audi 72 and the Audi 80 from 1969 onwards.
In 1972 the F103 series was discontinued in favour of the "B1" Audi 80.
The F103 series were equipped exclusively with the M118 four-cylinder four-stroke engine. These were longitudinally mounted. This combination of front-wheel drive, which Auto Union's DKW brand had pioneered during the 1930s, and the longitudinal positioning of a four-cylinder engine would provide the basic template for Volkswagen's successful new Passat as well as the Audi models Audi 80 and Audi 100 after Volkswagenwerk AG acquired the Auto Union from Daimler-Benz late in 1964. Since the chassis on the F103 was taken from the DKW F102 with a three-cylinder two-stroke engine, the longer engine meant that the cooling system had to be offset to the left of the engine instead of the normal position in front of it. Because of the radiator's location, the front cylinder of the engine had a tendency to run cooler than the other three and as a consequence the spark plug tended to foul up, particularly if the engine was often used in city traffic. To avoid this, it was often recommended to run a hotter spark plug (with a lower heat range) in the front cylinder than in the other three.[citation needed]
The engines of the F103 series were developed by Daimler-Benz as part of a military project that never came to fruition. They were dubbed the Mitteldruckmotor (medium-pressure engines) because of their unusually high BMEP (mean effective pressure, as calculated from brake torque) values, which led to a good thermodynamic efficiency. The engines had spiral-formed intake channels that gave the fuel-air mixture a good swirl. The engine had Heron-type combustion chambers with broad squish bands, further enhancing the mixture swirl and aiding good combustion. These features made it possible to use very high compression ratios for the time. The initial engine version had a compression ratio of 11:1 for 98 RON fuel and even the engines intended for 92 RON fuel had a compression of 9:1, which was a very unusually high value for the time.[citation needed]
The car came with a four-speed manual transmission.
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