Direct control for variable displacement pumps
US-2024240631-A1 · Jul 18, 2024 · US
Fuel system
US2016201564A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016201564-A1 |
| Application number | US-201615073768-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 18, 2016 |
| Priority date | Sep 25, 2013 |
| Publication date | Jul 14, 2016 |
| Grant date | — |
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- Title
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Abstract
Official abstract text for this publication.
A fuel system includes: a constant-volume pump and a centrifugal pump increasing the pressure of fuel to be supplied to an engine for aviation and discharging the fuel; an operation controller configured to select in accordance with the operation state of the engine, one of a constant-volume pump-using mode of increasing the pressure of fuel using the constant-volume pump and a centrifugal pump-using mode of increasing it using the centrifugal pump; and a speed changer connecting the engine and the centrifugal pump, changing the rotational speed of rotational power output from the engine and transmitting the rotational power to the centrifugal pump, and being capable of adjusting the speed-changing ratio of the rotational speed.
First claim
Opening claim text (preview).
1 . A fuel system comprising: a constant-volume pump and a centrifugal pump increasing the pressure of fuel to be supplied to an engine for aviation and discharging the fuel; an operation controller configured to select in accordance with the operation state of the engine, one of a constant-volume pump-using mode of increasing the pressure of fuel using the constant-volume pump and a centrifugal pump-using mode of increasing the pressure of fuel using the centrifugal pump; and a speed changer connecting the engine and the centrifugal pump, changing the rotational speed of rotational power output from the engine and transmitting the rotational power to the centrifugal pump, and being capable of adjusting the speed-changing ratio of the rotational speed. 2 . The fuel system according to claim 1 , further comprising: a first flow passageway in which the centrifugal pump is provided; a second flow passageway in which the constant-volume pump is provided; and a shut-off mechanism provided on an upstream side of the centrifugal pump in the first flow passageway, and configured to block the first flow passageway when the fuel system is in the constant-volume pump-using mode and to open the first flow passageway when the fuel system is in the centrifugal pump-using mode. 3 . The fuel system according to claim 2 , further comprising: a third flow passageway whose first end is connected to a downstream end of the first flow passageway and to a downstream end of the second flow passageway, and whose second end is connected to an upstream side of the constant-volume pump in the second flow passageway; and a switching mechanism configured to connect the downstream end of the second flow passageway and the third flow passageway when the fuel system is in the constant-volume pump-using mode, and to connect the downstream end of the first flow passageway and the third flow passageway when the fuel system is in the centrifugal pump-using mode.
Assignees
Inventors
Classifications
- F02C7/236Primary
Fuel delivery systems comprising two or more pumps · CPC title
- F02C9/30Primary
characterised by variable fuel pump output · CPC title
Transmission of power · CPC title
Feeding or distributing systems using pumps (from a central source to a plurality of burners F23K5/06) · CPC title
differential pressure · CPC title
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- What does patent US2016201564A1 cover?
- A fuel system includes: a constant-volume pump and a centrifugal pump increasing the pressure of fuel to be supplied to an engine for aviation and discharging the fuel; an operation controller configured to select in accordance with the operation state of the engine, one of a constant-volume pump-using mode of increasing the pressure of fuel using the constant-volume pump and a centrifugal pump…
- Who is the assignee on this patent?
- Ihi Corp
- What technology area does this patent fall under?
- Primary CPC classification F02C7/236. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Jul 14 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).