WO2009145582A2 - Appareil économiseur de carburant pour machine hydraulique industrielle - Google Patents

Appareil économiseur de carburant pour machine hydraulique industrielle Download PDF

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Publication number
WO2009145582A2
WO2009145582A2 PCT/KR2009/002859 KR2009002859W WO2009145582A2 WO 2009145582 A2 WO2009145582 A2 WO 2009145582A2 KR 2009002859 W KR2009002859 W KR 2009002859W WO 2009145582 A2 WO2009145582 A2 WO 2009145582A2
Authority
WO
WIPO (PCT)
Prior art keywords
hydraulic
pressure
pump
fluid
hydraulic cylinder
Prior art date
Application number
PCT/KR2009/002859
Other languages
English (en)
Korean (ko)
Other versions
WO2009145582A3 (fr
Inventor
임창후
Original Assignee
Im Chang Hoo
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR2020080007160U external-priority patent/KR20080001986U/ko
Application filed by Im Chang Hoo filed Critical Im Chang Hoo
Publication of WO2009145582A2 publication Critical patent/WO2009145582A2/fr
Publication of WO2009145582A3 publication Critical patent/WO2009145582A3/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2246—Control of prime movers, e.g. depending on the hydraulic load of work tools
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/04—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure using fluid, other than fuel, for injection-valve actuation

Definitions

  • the present invention relates to a hydraulic machine of an industrial vehicle such as a crane or an excavator, and in particular, to increase and decrease the engine output in response to a change in the pressure of a working device and at the same time when the pressure of the hydraulic pump is low and high pressure.
  • the present invention relates to a fuel saving device of an industrial hydraulic apparatus for saving fuel consumed as a whole by adjusting the injection volume of an engine according to the present invention.
  • the output torque of the engine is set in accordance with the maximum workload.
  • the height of the excavator tool is independent of the difference between the high pressure when the work tool is full of soil and the pressure difference when it is lowered, or the difference between the high pressure at the start of the rotation and the low pressure when it is about to stop. Since the engine power is matched to the pressure, unnecessary fuel consumption occurs.
  • the accelerator is not input for a predetermined time (for example, 5 seconds) while the engine is running, the engine speed is automatically lowered to the minimum speed (Idle RPM) to reduce unnecessary fuel consumption.
  • a predetermined time for controlling engine speed is fixedly set inside the vehicle.
  • the engine speed is lowered to the minimum speed, since the engine continues to run, there is a problem that the practical fuel saving effect is extremely insignificant.
  • An object of the present invention for solving the above problems relates to a hydraulic machine of an industrial vehicle such as a crane or an excavator, and in particular, to increase and decrease the engine output in response to the pressure change of the working device and at the same time the pressure of the hydraulic pump
  • the present invention provides a fuel saving device for an industrial hydraulic device to save fuel consumed as a whole by adjusting the injection volume of an engine according to a low pressure and a high pressure.
  • a fuel saving device of an industrial hydraulic apparatus for achieving the above object, the ECU for adjusting the fuel injection amount of the engine, the hydraulic cylinder for the operation of the injection pump for supplying the fuel of the hydraulic device,
  • a throttle valve provided on the discharge path of the fluid (oil) supplied to the hydraulic cylinder, and a relief valve provided on the fluid discharge path of the throttle valve and blocking or opening the recovery flow path.
  • a hydraulic pump for supplying a fluid having a constant pressure to the hydraulic cylinder, and a solenoid valve positioned on a delivery path of the fluid supplied from the hydraulic pump to the hydraulic cylinder and blocking or opening the fluid supply flow path.
  • the hydraulic pump is composed of a main pump and an auxiliary pump, the auxiliary pump to supply a fluid of a constant pressure to the hydraulic cylinder side through the solenoid valve;
  • a relay for adjusting an opening degree of the solenoid valve according to a state of an input voltage;
  • a pressure sensor for detecting a change and a magnitude of pressure according to the operation of the main pump;
  • An additional feature of the fuel saving device of the industrial hydraulic apparatus according to the present invention for achieving the above object is to close or connect the transmission path of the operation control power provided to the solenoid valve side in the relay or automatic mode or manual mode. It further comprises a switch for selecting the.
  • the operation state of the relay that is, the change and size of the pressure according to the operation of the main pump detected by the pressure sensor
  • Two or more variables for adjusting the engine RPM by providing a value of a variable resistor set in a dial manner to the ECU controlling the engine according to the case where the pressure of the main pump is high pressure and low pressure in a linear proportion.
  • the resistor is connected to the relay.
  • the engine output is increased and decreased in response to the pressure change of the working device and at the same time the pressure of the hydraulic pump is low and high pressure.
  • FIG. 1 is an exemplary view illustrating the construction of a hydraulic and electrical circuit of a fuel saving device of an industrial hydraulic apparatus according to the present invention.
  • the path represented by a thick solid line represents a hydraulic circuit according to the flow of fluid (oil), and is represented by a thin solid line.
  • the path displayed represents an electrical circuit for the control of the hydraulic circuit.
  • the accompanying Figure 1 is largely composed of a hydraulic circuit and an electric circuit, the hydraulic circuit corresponds to the background of the present invention as a conventional hydraulic circuit, it turns out that the feature configuration of the present invention is an electric circuit.
  • Hydraulic and electrical circuit configuration of the fuel saving device of the industrial hydraulic device according to the present invention can be divided into a hydraulic circuit and an electric circuit, as shown in Figure 1, the hydraulic circuit is for supplying the fuel of the industrial hydraulic equipment A hydraulic cylinder 24 for operating the injection pump 29, a throttle valve 23 provided on the discharge path of the fluid (oil) supplied to the hydraulic cylinder 24, and adjusting the hydraulic pressure in the hydraulic cylinder; A relief valve 22 provided on the fluid discharge path of the throttle valve 23 to block or open the recovery flow path, and a hydraulic pump 25 for supplying a constant pressure fluid to the hydraulic cylinder 24. And a solenoid valve 21 positioned on a delivery path of the fluid supplied from the hydraulic pump 25 to the hydraulic cylinder 24 and blocking or opening the fluid supply flow path.
  • reference numeral 26 is a hydraulic filter
  • 27 and 28 are rods for providing the operation of the hydraulic cylinder 24 to the injection pump 29 side
  • 16 is a hydraulic lake.
  • the hydraulic pump referred to by reference numeral 25 is composed of a main pump 12 and an auxiliary pump (11).
  • a pressure sensor 14 for sensing the size and the size an indicator 15 for receiving the detection signal of the pressure sensor 14 and distributing the power supplied from the battery (+ B), and the indicator 15.
  • variable resistors are connected to the relay 17.
  • the variable resistors are used to adjust the engine RPM according to the operating state of the relay 17 in a dial manner.
  • the operation state of the relay 17 is linearly proportional to the change and magnitude of the pressure according to the operation of the main pump 12 detected by the pressure sensor 14, the pressure of the main pump 12 is high pressure. According to one case and low pressure, the control signal is provided to the ECU controlling the engine accordingly.
  • the engine output is repeatedly increased and decreased in response to the pressure change of the hydraulic pump 25, and at the same time when the pressure state of the hydraulic pump is low and high pressure.
  • the engine of the excavator in the present invention is 1400 ⁇ 1550 RPM when the pressure of the working device is low and at high pressure at the engine speed at the time of excavator shipments
  • the hydraulic pump which is set to operate in close proximity and is referred to by reference numeral 25, is composed of a main pump 12 and an auxiliary pump 11, and the pressure sensor 14 controls the state of the pressure according to the operation of the main pump 12. Will be detected.
  • the signal according to the pressure state of the main pump 12 detected by the pressure sensor 14 is transmitted to the indicator 15, the pressure sensing signal input to the indicator 15, that is, in the main pump 12 According to the detection signal of the pressure sensor 14 for the generated pressure, the indicator 15 operates the relay 17.
  • the solenoid valve 21 is operated, and thus the oil pumped from the auxiliary pump 11 passes through the solenoid valve 21 through the hydraulic lake 16 and then is supplied to the hydraulic cylinder 24.
  • the hydraulic pump operates the injection pump 29 (fuel supply device) through a rod (or cable) referred to by reference numerals 27 and 28.
  • reference numeral 19 which is not described, refers to a switch for closing or connecting a transmission path of an operation control power provided from the relay 17 to the solenoid valve 21. to be.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

La présente invention concerne une machine hydraulique industrielle comprenant un vérin hydraulique destiné à actionner une pompe d'injection pour alimenter en carburant la machine hydraulique, une vanne d'étranglement placée sur un chemin de sortie du fluide (huile) alimenté vers le vérin hydraulique de manière à régler la pression hydraulique dans le vérin hydraulique, un clapet de décharge placé sur un chemin de sortie de fluide de la vanne d'étranglement de manière à fermer ou à ouvrir un canal de récupération pertinent, une pompe hydraulique pour alimenter en fluide d'une pression prédéterminée le vérin hydraulique, et une électrovanne positionnée sur un chemin de transmission du fluide alimenté vers le vérin hydraulique à partir de la pompe hydraulique de manière à fermer ou à ouvrir un canal d'alimentation en fluide. Plus spécifiquement, la pompe hydraulique est constituée d'une pompe principale et d'une pompe auxiliaire, et la pompe auxiliaire alimente en fluide d'une pression prédéterminée le vérin hydraulique par l'intermédiaire de l'électrovanne. Un appareil économiseur de carburant pour une machine hydraulique industrielle comprend un relais pour contrôler un degré d'ouverture de l'électrovanne en fonction d'une tension d'entrée; un capteur pour détecter une variation et une grandeur de pression conformément au fonctionnement de la pompe principale; et un indicateur pour prendre un signal détecté entré à partir du capteur de pression, et pour l'alimentation en puissance, de manière linéaire, à partir d'une batterie interne de la machine hydraulique industrielle vers le relais conformément à la grandeur du signal détecté. L'appareil économiseur de carburant répète l'élévation et la diminution de la sortie moteur conformément à la variation de la pression d'un appareil de travail, et contrôle simultanément la quantité d'injection d'un moteur conformément au cas dans lequel la pression de la pompe d'injection est à un niveau faible et au cas dans lequel la pression de la pompe hydraulique est à un niveau élevé, réduisant ainsi la consommation globale de carburant.
PCT/KR2009/002859 2008-05-31 2009-05-29 Appareil économiseur de carburant pour machine hydraulique industrielle WO2009145582A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR2020080007160U KR20080001986U (ko) 2008-05-31 2008-05-31 굴삭기의 연료 절약장치
KR20-2008-0007160 2008-05-31
KR10-2008-0074359 2008-07-30
KR1020080074359A KR20090124885A (ko) 2008-05-31 2008-07-30 산업용 유압기기의 연료 절감 장치

Publications (2)

Publication Number Publication Date
WO2009145582A2 true WO2009145582A2 (fr) 2009-12-03
WO2009145582A3 WO2009145582A3 (fr) 2010-04-22

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PCT/KR2009/002859 WO2009145582A2 (fr) 2008-05-31 2009-05-29 Appareil économiseur de carburant pour machine hydraulique industrielle

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WO (1) WO2009145582A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102852185A (zh) * 2012-08-31 2013-01-02 徐州徐工挖掘机械有限公司 一种可调节复合动作协调性的液压挖掘机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6131632A (ja) * 1984-07-23 1986-02-14 Komatsu Ltd 変速シヨツク防止装置
JPH0711986A (ja) * 1993-06-23 1995-01-13 Komatsu Ltd アクセルペダルの自動制御方法
JPH10281112A (ja) * 1997-04-09 1998-10-20 Shin Caterpillar Mitsubishi Ltd 流体制御方法およびその装置
KR100221596B1 (ko) * 1997-10-21 1999-09-15 토니헬샴 유압식 건설기계의 유압력 제어장치 및 엔진 회전수-펌프 제어 방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6131632A (ja) * 1984-07-23 1986-02-14 Komatsu Ltd 変速シヨツク防止装置
JPH0711986A (ja) * 1993-06-23 1995-01-13 Komatsu Ltd アクセルペダルの自動制御方法
JPH10281112A (ja) * 1997-04-09 1998-10-20 Shin Caterpillar Mitsubishi Ltd 流体制御方法およびその装置
KR100221596B1 (ko) * 1997-10-21 1999-09-15 토니헬샴 유압식 건설기계의 유압력 제어장치 및 엔진 회전수-펌프 제어 방법

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102852185A (zh) * 2012-08-31 2013-01-02 徐州徐工挖掘机械有限公司 一种可调节复合动作协调性的液压挖掘机

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WO2009145582A3 (fr) 2010-04-22

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