Measuring and testing – Brake testing – Single wheel rotating and resistance measuring means
Patent
1976-06-21
1977-05-03
Ruehl, Charles A.
Measuring and testing
Brake testing
Single wheel rotating and resistance measuring means
188296, G01L 320
Patent
active
040206840
ABSTRACT:
A control valve absorption dynamometers has a closed end discharge conduit forming a cylinder with discharge openings in the cylinder walls. A floating piston is movable in the cylinder to vary the area of the discharge openings. A first piston surface is subject to the pressure at the exit port of the dynamometer or to the pressure downstream of a butterfly valve arranged between the piston and the exit port of the dynamometer. A second piston surface which may be smaller than the first piston surface is subject to pressure from the dynamometer exit or from a pump whereby the piston is moved for varying the area of the discharge openings in the cylinder wall. The intake of the pump may be connected to the inlet or exit port of the dynamometer. Flow control means may be located directly next to said exit port in said discharge conduit to convert a turbulent flow into a uni-directional flow.
REFERENCES:
patent: 2976960 (1961-03-01), Bathurst
patent: 3033321 (1962-05-01), Evans et al.
patent: 3138954 (1964-06-01), Evans et al.
patent: 3364736 (1968-01-01), Bathurst et al.
Carl Schenck AG
Fasse W. G.
Roberts W. W.
Ruehl Charles A.
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