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1. WO2015140622 - ELECTRONIC TORQUE AND PRESSURE CONTROL FOR LOAD SENSING PUMPS

Publication Number WO/2015/140622
Publication Date 24.09.2015
International Application No. PCT/IB2015/000360
International Filing Date 18.03.2015
IPC
F04B 1/29 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
1Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
12having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
26Control
28of machines or pumps with stationary cylinders
29by varying the relative positions of a swash plate and a cylinder block
F04B 1/32 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
1Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
12having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
26Control
30of machines or pumps with rotary cylinder blocks
32by varying the relative positions of a swash plate and a cylinder block
F04B 49/06 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
49Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups F04B1/-F04B47/196
06Control using electricity
CPC
F04B 1/295
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
1Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
12having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
26Control
28of machines or pumps with stationary cylinders
29by varying the relative positions of a swash plate and a cylinder block
295by changing the inclination of the swash plate
F04B 1/324
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
1Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
12having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
26Control
30of machines or pumps with rotary cylinder blocks
32by varying the relative positions of a swash plate and a cylinder block
324by changing the inclination of the swash plate
F04B 2201/12041
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
2201Pump parameters
12Parameters of driving or driven means
1204Position of a rotating inclined plate
12041Angular position
F04B 2201/12051
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
2201Pump parameters
12Parameters of driving or driven means
1205Position of a non-rotating inclined plate
12051Angular position
F04B 49/065
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
49Control ; , e.g. of pump delivery, or pump pressure; of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
06Control using electricity
065and making use of computers
F15B 11/08
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
11Servomotor systems without provision for follow-up action; ; Circuits therefor
08with only one servomotor
Applicants
  • DANFOSS POWER SOLUTIONS INC. [US]/[US]
Inventors
  • LIGENFELTER, Kevin
  • LAFAYETTE, Gary
Priority Data
14/220,20120.03.2014US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) ELECTRONIC TORQUE AND PRESSURE CONTROL FOR LOAD SENSING PUMPS
(FR) COMMANDE DE COUPLE ET DE PRESSION ÉLECTRONIQUE POUR POMPES À DÉTECTION DE CHARGE
Abstract
(EN) A pump control system, comprising: a motor (12) configured to drive a pump (14); a pressure relief valve (22) in fluid communication with the pump (14); a torque control valve (32) connected to a swashplate of the pump (14) and in fluid communication with the pressure relief valve (22); a swashplate angle sensor (36) connected to the swashplate (34); and a computer (40) connected to the swashplate angle sensor (36) and the pressure relief valve (22) wherein the computer (40) controls the pressure relief valve (22) based upon swashplate displacement to achieve maximum system pressure. The corresponding method of controlling is also disclosed.
(FR) L'invention porte sur un système de commande de pompe, lequel système comprend : un moteur (12) configuré de façon à entraîner une pompe (14) ; une soupape de détente de pression (22) en communication fluidique avec la pompe (14) ; une vanne de commande de couple (32) reliée à un plateau oscillant de la pompe (14) et en communication fluidique avec la soupape de détente de pression (22) ; un capteur d'angle de plateau oscillant (36) relié au plateau oscillant (34) ; et un ordinateur (40) connecté au capteur d'angle de plateau oscillant (36) et à la soupape de détente de pression (22), l'ordinateur (40) commandant la soupape de détente de pression (22) sur la base d'un déplacement de plateau oscillant afin d'obtenir une pression maximale du système. L'invention porte également sur un procédé de commande correspondant.
Latest bibliographic data on file with the International Bureau