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A centrifugal supercharger is a specialized type of supercharger that makes use of centrifugal force in order to increase the manifold air pressure, MAP. An increased MAP allows the engine to burn more fuel, which results in an increased power output.
Supercharger: Single-speed General Electric centrifugal type supercharger, 1:7.15 speed increase; ... at 2,325 rpm cruise power at 13,120 ft (4,000 m) Specific power: ...
Positive displacement superchargers deliver an almost constant level of boost pressure increase at all engine speeds, while dynamic superchargers cause the boost pressure to rise exponentially with engine speed (above a certain threshold). [4] Another family of supercharger, albeit rarely used, is the pressure wave supercharger.
The centrifugal supercharger was added at the back of the engine, driven off the crankshaft via step-up gearing. It added 13 kg (29 lb) to the weight and 242 mm (9.5 in) to the length but boosted the performance at altitude to a continuous power of 177 kW (237 hp) at 2,500 rpm and 2,200 m (7,220 ft).
The AM-38 was a low-altitude engine for ground attack aircraft that evolved from the earlier AM-35A.Compared to the AM-35A it had a reduced compression ratio, strengthened crankshaft, a single-speed geared centrifugal supercharger optimized for low-altitude performance, revised cooling system and revised oil system.
Supercharger: Centrifugal supercharger geared at 4.47:1 crankshaft speed; Fuel system: 2x Pallas-Zenith 65 VAH2 carbutettors; Fuel type: 87 Octane gasoline; Oil system: Pressure system for crankshaft, pistons and reduction gear at 1.5–2.5 atm (22.04–36.74 psi; 1.52–2.53 bar): splash lubrication for camshaft and supercharger; Cooling ...
The AM-35 also used a single-speed supercharger instead of the two-speed supercharger specified. In order to obtain higher performance a new version the AM-35A was designed with greater supercharger output and this was produced in large numbers at Factory No. 24 until the end of 1941 when the factory was evacuated to Kuybyshev. Although ...
First mass-produced ASh-82, with carburettors and one two-speed supercharger. Engine had lubrication and carburettor problems in harsh winter conditions. ASh-82-112 (M-82-112) Improved M-82-111 with longer Time between overhaul (TBO) and better reliability. Redesigned carburettors, oil pumps, gear, turbocharger and reinforced pushrods. ASh-82F ...