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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 tradition of using the engine in Subaru's kei car offering was continued, with the Subaru Vivio sharing its EN07 engine with this version of the Sambar. The engine now had four cylinders and 40 PS (29 kW) in the carburetted standard model; 55 PS (40 kW) was on tap in the optional supercharged model, coupled with fuel injection. An automatic ...
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It was a replacement for the two-cylinder EK23 that was used in the Subaru Rex.While other manufacturers adopted a three-cylinder engine, the Subaru EN is a four-cylinder of only 547 cc. Subaru also did make a three-cylinder engine, called the Subaru EF engine which was used in the Subaru Justy, but the larger EF engine (which was based on the smaller EK23) was not modernized at the same time.
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The FB16 direct injection turbocharged (DIT) engine is the first FB-series engine with a turbocharger, and includes direct injection with an auto stop/start system. It is the base engine in the first-generation (2014–20 model years) Subaru Levorg. The Levorg also has an option for a 2.0 litre direct injection turbo engine, the FA20F.
The EA-82T engine was introduced in 1984 for the Third generation of Subaru Leone in the GL-10 and RX Turbo trim models plus the XT (Vortex), and later on the Subaru Leone RX Coupe models. It is a turbocharged version of the MPFI EA-82 with modified cylinder heads, lower compression pistons, and boost pressure of 7 psi (0.48 bar).
Subaru was the first to offer chain-driven overhead cam (OHC) technology in the small, air-cooled engine market with its Subaru Industrial EX engine series. [5] A standard for high-performance automotive engines, chain-driven OHC technology allows the intake and exhaust valves to be positioned for optimum engine performance.