Components
The four main components of a centrifugal supercharger are the volute (compressor housing), diffuser, impeller and transmission. Volutes are typically cast into a form from aluminum rather than other metals due to the combination of strength, weight, and resistance to corrosion. Volutes are then precision machined to match the impeller design. Impellers are designed in many configurations, and Euler’s pump and turbine equation plays an important role in understanding impeller performance. Impellers are often formed by casting metals into a form and then machined, with the highest quality impellers machined from solid billet.
The transmission provides a step-up ratio from the input shaft (driven from the engine crankshaft) to the output shaft, to which the impeller attaches (it is not uncommon for centrifugal supercharger impeller speeds to exceed 100,000 rotations per minute). The basic components of the gear drive centrifugal transmission are shafts, gears, bearings, and seals. Because of the high speeds and loads the transmission must endure, components are machined, ground and assembled to extremely close tolerances.
Read more about this topic: Centrifugal-type Supercharger, Standard Functionality
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“Hence, a generative grammar must be a system of rules that can iterate to generate an indefinitely large number of structures. This system of rules can be analyzed into the three major components of a generative grammar: the syntactic, phonological, and semantic components.”
—Noam Chomsky (b. 1928)