Gear pump intended, in particular, as a high pressure fuel pump
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United States of America Patent
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Oct 9, 2018
Grant Date -
Feb 16, 2017
app pub date -
Apr 14, 2015
filing date -
Apr 15, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A geared fuel pump (4′) operates to supply a determined flow but at low or zero pressure rise. It is planned to add gland packing (46) between support bearings (19) of the pinions (11), or between some of them, to provide hydrodynamic lift for these bearings, by delimiting a closed cavity (47) to provide lift by a fluid with better viscosity properties instead of using the fluid itself that is pumped. Possible application to fuel pumps for aircraft engines, in which the pump (4′) is a high pressure pump associated with a low pressure pump.
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International Classification(s)
- F04C:ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DIS....
- F03C:POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F04D:NON-POSITIVE-DISPLACEMENT PUMPS
- F02C:GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION....
- F01C:ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR EN....
- F01D:NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g....
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