Internal-combustion engines – Charge forming device – Supercharger
Patent
1982-09-29
1984-12-18
Koczo, Michael
Internal-combustion engines
Charge forming device
Supercharger
417 64, F02B 3342
Patent
active
044885326
ABSTRACT:
A gas-dynamic pressure wave machine with an exhaust gas bypass (11) which includes a flap (12) provided in the bypass (11) which opens with higher engine speeds in order to limit the peak pressure in the internal combustion engine (9). A flap control is provided via a pressure box (14) with a process pressure, for example, exhaust gas pressure, as the controlling dimension. The process pressure is coupled with a constant pressure such as a vacuum or excess pressure for altitude compensation and temperature compensation in such a manner that the process pressure is to be raised by the same amount with a decreasing atmospheric pressure. For this purpose, the pressure box (14) is divided into first and second separate chambers (16, 17) by means of a diaphragm (15) and the process pressure acts on the first chamber while the second chamber is maintained under a constant pressure. The diaphragm (15) acts on the flap (12) through a plurality of rods (19-23).
REFERENCES:
patent: 1508707 (1924-09-01), Moss
patent: 2800120 (1957-07-01), Jendrassik
BBC Publication No. CH-T 12 3063D, "Die Alternative Heisst Comprex", Jul. 16, 1979.
BBC Brown Boveri & Company Limited
Koczo Michael
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