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US 4,398,868 AGranted
Control apparatus for a gas dynamic pressure-wave machine for charging combustion engines
AssigneeBBC Brown, Boveri & Company, Limited
InventorsChristian Komauer, Andreas Mayer
Life of this patent
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Abstract
A control apparatus for a gas dynamic pressure-wave machine for charging combustion engines. The inflow cross-sectional area of the gas pocket in the high-pressure exhaust channel is controlled in accordance with the desired operating conditions of the engine by a bimetallic flap or valve member as a function of the temperature of the high-pressure exhaust gas.
Claims7
A control apparatus for use in a gas dynamic pressure-wave machine for charging combusion engines, comprising:
- a pressure-wave machine provided with a high-pressure exhast gas channel;
- said pressure-wave machine including a housing containing a cell rotor;
- said high-pressure exhaust gas channel being provided with a gas pocket at a location before opening into the cell rotor in order to branch-off high-pressure exhaust gases into an auxiliary flow at predetermined operating conditions of the engine;
- a flap member arranged in the high-pressure exhaust gas channel;
- said flap member being fixedly clamped in the housing of the pressure-wave machine along one of its edges;
- said flap member experiencing a bending deformation when exposed to temperature changes;
- said flap member forming a partition wall between the high-pressure exhaust gas channel and the gas pocket;
- and
- the flap member being structured to possess a temperature-dependent bending deformation whose magnitude and course corresponds to a temperature-dependent opening characteristic of an inflow cross-section of the gas pocket and which is desired for the pressure-wave machine.
6 more elements
Dependencies are inferred from the claim text.