Valve timing in electronically commutated hydraulic machine

US11649727B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-11649727-B2
Application numberUS-201916729196-A
CountryUS
Kind codeB2
Filing dateDec 27, 2019
Priority dateDec 28, 2018
Publication dateMay 16, 2023
Grant dateMay 16, 2023

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Abstract

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An electronically commutated hydraulic machine is coupled to a drivetrain. Working chambers of the hydraulic machine are connected to low and high pressure manifold through electronically controlled valves. The phase of opening and closing of the valves has a default. In order to avoid cycle failure due to acceleration events, for example due to backlash in the drivetrain, the phase of opening or closing of the electronically controlled valves is temporarily advanced or retarded from the default timing.

First claim

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The invention claimed is: 1. Apparatus comprising a fluid working machine, the fluid working machine comprising a rotatable shaft, at least one working chamber having a volume which varies cyclically with rotation of the rotatable shaft, a low pressure manifold and a high pressure manifold, a low pressure valve for regulating communication between the low pressure manifold and the working chamber, a high pressure valve for regulating communication between the high pressure manifold…

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What does patent US11649727B2 cover?
An electronically commutated hydraulic machine is coupled to a drivetrain. Working chambers of the hydraulic machine are connected to low and high pressure manifold through electronically controlled valves. The phase of opening and closing of the valves has a default. In order to avoid cycle failure due to acceleration events, for example due to backlash in the drivetrain, the phase of opening …
Who is the assignee on this patent?
Artemis Intelligent Power Ltd
What technology area does this patent fall under?
Primary CPC classification F01B1/0675. Mapped technology areas include Mechanical Engineering.
When was this patent published?
Publication date Tue May 16 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).