Two-stage supercharging apparatus

Details Two-stage supercharging apparatus Two-stage supercharging apparatus

1980-02-11

1982-08-17

Koczo, Jr., Michael

Power plants

Fluid motor means driven by waste heat or by exhaust energy...

With supercharging means for engine

417407, F02B 3700

Patent

active

043442897

ABSTRACT:
A two-stage exhaust-driven supercharger aggregate is disclosed which comprises a low-pressure supercharger and a high-pressure supercharger. Each of the two superchargers is provided with a compressor driven by a respective turbine. Each of these superchargers is arranged on a separate shaft. In order to provide sufficient space for auxiliary components such as supercharger-air coolers, a bypass system and the like, and to obtain one compact structural unit, the pressure ratio of the low-pressure compressor is made greater than the pressure ratio of the high-pressure compressor by at least 40%. In this way, the geometrical exterior dimensions of the high-pressure supercharger becomes substantially smaller than the dimensions of the low-pressure supercharger. The shaft of the high-pressure supercharger is arranged such that it is parallel to, and offset laterally relative to the shaft of the low-pressure supercharger. Due to the smaller size of the high-pressure supercharger at least a portion of the auxiliary components are arranged in a radial direction next to the high-pressure supercharger without extending beyond an enveloping profile of the low-pressure supercharger. By the present invention, a very compact exhaust-driven supercharger aggregate is formed.

REFERENCES:
patent: 2375006 (1945-05-01), Larrecq
patent: 3257797 (1966-06-01), Lieberherr
patent: 4032262 (1977-06-01), Zehnder

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