Rotary gear pump with vanes

Internal-combustion engines – Rotary – With transfer means intermediate single compression volume...

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123246, 4182011, 4182064, F02B 5300, F04C 216

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active

058456171

ABSTRACT:
A rotary gear pump comprises a housing and at least a pair of rotatable, meshing gears positioned within the housing. The meshing gears define spaced teeth which extend helically in the general direction of the axis of each gear rotation. A flow inlet and flow outlet are provided, each positioned in the housing to permit flow of fluid substantially longitudinally of the rotation axes between the meshing gears as the gears rotate said teeth through a tooth-meshing area. At least one first vane covers the teeth of each gear at a rotational position upstream of the tooth-meshing area, to shield the covered teeth from an energy-consuming backflow of fluid from said tooth-meshing area as the gears rotate. Also, fixed-volume furnaces are used to receive and distribute compressed, burning gases from closing chambers formed between the teeth to opening chambers across the top dead center position.

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Article Design of Machine Elements, 5th Edition Spotts, M.F. (Prentice Hall, Englewood Cliffs, New Jersey) 1978, pp. 502-511.

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