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The Subaru FB engine is the third generation of gasoline boxer-4 engine used in Subaru automobiles, and was announced on 23 September 2010. [1] It follows the previous generation EJ-series engine which was introduced in 1989 and the first generation EA-series which was introduced in 1966.
It is the fourth-generation boxer engine family from Subaru. [4] Compared to the preceding FB series, the CB is shorter; the bore pitch (centerline to centerline spacing between adjacent cylinders) has decreased from 113.0 to 98.6 mm (4.45 to 3.88 in) and the overall crank length has decreased from 350.5 to 315.9 mm (13.80 to 12.44 in).
For the first time in a Subaru engine, the centerlines of the cylinder bores do not intersect with the crankshaft axis to reduce friction during the piston downstroke; instead, there is a crank offset of 8 mm (0.31 in). Overall thermal efficiency is 40% due to the adoption of lean-burn combustion with an excess air ratio (λ) of 2. [32]
The Subaru FA engine is a gasoline boxer-4 engine used in Subaru and Toyota automobiles. It is a derivative of the FB engine , with efforts to reduce weight while maintaining durability as the main design goals.
The Subaru EJ engine is a series of four-stroke automotive engines manufactured by Subaru. They were introduced in 1989, intended to succeed the previous Subaru EA engine . The EJ series was the mainstay of Subaru's engine line, with all engines of this series being 16-valve horizontal flat-fours , with configurations available for single, or ...
The company also produced boxer-six engines from 1988 to 1996 and 2001–2019. [16] In 2008, the Subaru EE engine became the world's first passenger car diesel boxer engine. This engine is a turbocharged boxer-four with common rail fuel injection. [4] [17] [18] [19] Ferrari used flat-twelve engines for various Formula One cars in the 1970s.
Subaru Impreza WRX STI; Subaru Legacy; Subaru Legacy (fifth generation) Subaru Legacy (first generation) Subaru Legacy (fourth generation) Subaru Legacy (second generation) Subaru Legacy (seventh generation) Subaru Legacy (sixth generation) Subaru Legacy (third generation) Subaru Leone; Subaru Levorg; Subaru Outback; Subaru SRD-1; Subaru ...
A new prototype front-wheel-drive car was built with a 923 cc (56 in 3) water-cooled boxer engine, which became the basis for the Subaru 1000 and the EA-52 boxer engine. The car began sales to the public starting in 1966. [1] The EA series engines have aluminum heads with aluminum blocks.
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