Pumps – Motor driven – Fluid motor
Patent
1989-02-03
1990-08-28
Vrablik, John J.
Pumps
Motor driven
Fluid motor
74397, F04B 3500
Patent
active
049521233
ABSTRACT:
A gear wheel driven air compressor that is constructed as a piston compressor, the drive gear wheel of which, on the air compressor crankshaft, meshes with a gear wheel on the camshaft of the internal combustion engine. With drives of this type, the negative torque of the air compressor, which is produced once the upper dead center position of the air compressor piston has been reached, leads to a sudden flank change in the tooth mesh, which is associated with an unpleasant noise. In order to reduce this noise, it is known to make the meshing flank clearance as small as possible. However, clearances which are too small lead to increased rotational bending strain on the air compressor crankshaft and the camshaft. In order to prevent this, a sinusoidal meshing flank clearance change is proposed, which is obtained via a specific eccentricity of the air compressor drive gear wheel, which is associated with the upper dead center position of the air compressor piston.
REFERENCES:
patent: 1196609 (1916-08-01), Stewart
patent: 2444734 (1948-07-01), Gillett
patent: 2552703 (1951-05-01), Alonso
patent: 3888134 (1975-06-01), Miranda
patent: 4671223 (1987-06-01), Asano et al.
Blackmon Robert N.
MAN Nutzfahrzeuge GmbH
Vrablik John J.
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