KR100407879B1 - Fuel supply device for internal combustion engine - Google Patents

Fuel supply device for internal combustion engine Download PDF

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Publication number
KR100407879B1
KR100407879B1 KR1019950049113A KR19950049113A KR100407879B1 KR 100407879 B1 KR100407879 B1 KR 100407879B1 KR 1019950049113 A KR1019950049113 A KR 1019950049113A KR 19950049113 A KR19950049113 A KR 19950049113A KR 100407879 B1 KR100407879 B1 KR 100407879B1
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South Korea
Prior art keywords
fuel
valve
internal combustion
combustion engine
pressure
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KR1019950049113A
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Korean (ko)
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KR960023745A (en
Inventor
발터 클라우스
앤드루스 케이스
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로베르트 보쉬 게엠베하
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D33/00—Controlling delivery of fuel or combustion-air, not otherwise provided for
    • F02D33/003—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge
    • F02D33/006—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge depending on engine operating conditions, e.g. start, stop or ambient conditions
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
    • F02D41/065—Introducing corrections for particular operating conditions for engine starting or warming up for starting at hot start or restart
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/32—Controlling fuel injection of the low pressure type
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/54—Arrangement of fuel pressure regulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/31—Control of the fuel pressure
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0023—Valves in the fuel supply and return system
    • F02M37/0029—Pressure regulator in the low pressure fuel system

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Means For Warming Up And Starting Carburetors (AREA)

Abstract

본 발명은 불합리한 조건, 예를 들어 고온 시동의 조건하에서도 신뢰할 수 있는 작동 및 내연 기관의 확실한 시동을 보장할 수 있는 연료 공급 장치를 제공하는 것이다.The present invention provides a fuel supply apparatus capable of ensuring reliable operation and reliable starting of an internal combustion engine even under unreasonable conditions, for example, under conditions of high temperature starting.

소정의 조건, 예를 들어 고온 시동시에 연료 압력이 상승되며, 이 경우에 연료의 상승은 연료 반송 파이프에 설치된 밸브의 폐쇄에 의해 행해지고, 부가적인 밸브와 평행하게 위치하는 쓰로틀부 또는 분배 장치와 탱크 사이에 과압 밸브가 설치되어 있도록 내연 기관용 연료 공급 장치를 제공한다. 밸브의 제어 및 고온 시동의 검출은 내연 기관의 제어 장치에 의해 행해진다.The fuel pressure is raised at a predetermined condition, for example at high temperature start-up, in which case the raising of the fuel is effected by the closing of the valve provided in the fuel conveying pipe and with the throttle portion or the dispensing device located in parallel with the additional valve A fuel supply for an internal combustion engine is provided so that an overpressure valve is installed between the tanks. The control of the valve and the detection of high temperature start are performed by the control device of the internal combustion engine.

Description

내연 기관용 연료 공급 장치Fuel supply for internal combustion engines

발명이 속하는 기술분야FIELD OF THE INVENTION

본 발명은 내연 기관용 연료 공급 장치에 관한 것으로서, 연료 펌프가 설치되어 있고, 상기 연료 펌프는 연료를 연료 탱크로부터 연료 파이프 및 분배 장치를 통해서 분사 밸브에 공급하도록 되어 있으며, 연료 반송 통로가 설치되어 있고, 상기 연료 반송 통로는 적어도 하나의 압력 조절기와 밸브를 가지며 과잉 연료를 연료 탱크로 반송하는 형식의 연료 공급 장치에 관한 것이다.The present invention relates to a fuel supply device for an internal combustion engine, wherein a fuel pump is provided, the fuel pump is configured to supply fuel from the fuel tank to the injection valve through a fuel pipe and a distribution device, and a fuel conveyance passage is provided. The fuel conveying passage relates to a fuel supply apparatus of a type having at least one pressure regulator and a valve and conveying excess fuel to a fuel tank.

종래의 기술Conventional technology

내연 기관의 연료 공급 장치에 있어서 연료가 전기 연료 펌프에 의해 연료 용기에서 분사 밸브로 압송되는 것이 공지되어 있고, 이런 경우에 과잉 연료는 반송 파이프를 통해서 연료 용기로 반송된다. 내연 기관의 부하가 다를 때는 상이한 양의 연료가 필요하게 되므로, 연료 공급은 내연 기관의 제어 장치에 의해 조절된다. 전기 연료 펌프를 조절하기 위해, 예를 들어 독일 특허 출원 공개 제2808731호 명세서에는 연료 압력을 검출하고 측정된 연료 압력에 따라 전기 연료 펌프의 회전수 및 그에 따른 압송 출력을 조절하는 것이 제안되어 있다. 이런 조절은 전기 연료 펌프의 유효 공급 전압이 제어 장치에 의해 영향을 받음으로써 행해진다. 조절은 전체적으로 내연 기관의 운전 상태에 관한 각종 정보를 사용해서 행해진다.In a fuel supply device of an internal combustion engine, it is known that fuel is pumped from the fuel container to the injection valve by an electric fuel pump, in which case the excess fuel is returned to the fuel container through a conveying pipe. Since different amounts of fuel are required when the load of the internal combustion engine is different, the fuel supply is regulated by the control device of the internal combustion engine. In order to regulate the electric fuel pump, for example, German Patent Application Publication No. 2808731 proposes to detect the fuel pressure and to adjust the rotational speed of the electric fuel pump and thus the pressure output according to the measured fuel pressure. This adjustment is made by the effective supply voltage of the electric fuel pump being affected by the control device. The adjustment is carried out using various information relating to the operating state of the internal combustion engine as a whole.

소위 덴드 엔디드(Dend ended) 시스템에서는 연료 압력이 전기 연료 펌프의 근처에 설치되어 있는 압력 조절기를 사용하여 조절되고, 이런 경우에 분배 장치에는 반송 파이프가 설치되어 있지 않다.In so-called dend ended systems the fuel pressure is regulated using pressure regulators installed near the electric fuel pump, in which case the dispensing device is not equipped with a conveying pipe.

발명이 해결하고자 하는 과제Problems to be Solved by the Invention

본 발명의 과제는 서두에 설명한 형식의 연료 공급 장치를 개량하여 불합리한 조건, 예를 들어 고온 시동의 조건에서도 신뢰할 수 있는 작동 및 내연 기관의 확실한 시동을 보장할 수 있는 연료 공급 장치를 제공하는 것이다.An object of the present invention is to improve the fuel supply device of the type described at the beginning to provide a fuel supply device that can ensure reliable operation and reliable start up of an internal combustion engine even under unreasonable conditions, for example, high temperature start-up conditions.

과제를 해결하기 위한 수단Means to solve the problem

상기 과제를 해결하기 위해 본 발명의 구성에는 미리 설정 가능한 조건에서 연료 압력을 상승시키는 부가적인 수단인 제어 장치가 설치되도록 하였다.In order to solve the above problems, the configuration of the present invention is provided with a control device which is an additional means for raising the fuel pressure under a presettable condition.

발명의 효과Effects of the Invention

본 발명에 따른 장치는 다음과 같은 장점을 갖는다. 즉, 불합리한 조건, 예를 들어 고온 시동의 조건하에서도 신뢰할 수 있는 작동 및 내연 기관의 확실한 시동을 보장할 수 있다. 이러한 장점은 적합한 수단에 의해 불합리한 조건을 검출한 후, 즉 고온 시동 조건을 검출한 후에 연료 압력을 상승시킴으로써 얻어진다. 이런 경우 고온 시동중에 연료 압력의 상승은 압력 조절기의 연료 반송 통로내에 있는 쓰로틀부의 간단한 접속에 의해 행해진다. 제어 장치에 의한 이러한 쓰로틀부의 적합한 제어는 통상의 조건에서는, 특히 양호하게는 시스템 압력 상승이 일어나지 않는 것을 보장한다.The device according to the invention has the following advantages. That is, it is possible to ensure reliable operation and reliable start of the internal combustion engine even under unreasonable conditions, for example, under conditions of high temperature starting. This advantage is obtained by raising fuel pressure after detecting unreasonable conditions by suitable means, ie after detecting a high temperature starting condition. In this case, the increase in fuel pressure during the high temperature start is made by simple connection of the throttle part in the fuel conveyance passage of the pressure regulator. Proper control of this throttle part by the control device ensures that under normal conditions, particularly preferably no system pressure rise occurs.

실시예Example

하기에서 도면을 참조하여 본 발명의 실시예를 설명한다.An embodiment of the present invention will be described below with reference to the drawings.

제 1 도에는 본 발명의 제 1 실시예가 도시되어 있다. 여기서, 참조 부호 10은 연료 탱크를 나타내며, 연료 펌프, 통상 전기 연료 펌프(11)가 상기 연료 탱크(10)로부터 연료 파이프(12)를 통해서 연료를 분배 장치(13)에, 나아가서는 분사 밸브(14, 15, 16, 17)에 공급한다. 이 분사 밸브(14, 15, 16, 17)는 연료를 내연 기관의 흡입 파이프(18)에 분사한다.1 shows a first embodiment of the present invention. Here, reference numeral 10 denotes a fuel tank, in which a fuel pump, usually an electric fuel pump 11, delivers fuel from the fuel tank 10 to the distribution device 13 through the fuel pipe 12 and then to the injection valve ( 14, 15, 16, 17). These injection valves 14, 15, 16 and 17 inject fuel into the intake pipe 18 of the internal combustion engine.

전기 연료 펌프(11)와 분배 장치(13) 사이에는 연료 반송 통로(19)가 설치되어 있고, 상기 연료 반송 통로(19)를 통해서 과잉 연료가 연료 탱크(10)로 반송된다. 연료 반송 통로(19)에는 압력 조절기(20)와 밸브(21)가 위치하고 있다. 이 밸브(21)에 평행하게 쓰로틀부(22)가 설치되어 있다.A fuel conveyance passage 19 is provided between the electric fuel pump 11 and the distribution device 13, and excess fuel is conveyed to the fuel tank 10 through the fuel conveyance passage 19. The pressure regulator 20 and the valve 21 are located in the fuel conveyance passage 19. The throttle part 22 is provided in parallel with this valve 21.

연료 공급 시스템이 제어 장치(23)에 의해 제어되는 경우에, 제어 장치(23)는 입구(E)를 통해서 필요한 정보 또는 신호를 받고, 출구(A)를 통해서 제어 신호를 송출한다. 이와 같은 제어 신호는 예를 들어 분사 밸브(14, 15, 16, 17)를 통해서 분사를 행하게 하는 제어 신호(S1)이다. 다른 제어 신호는 밸브(21)의 조작을 위한 제어 신호(S2)와 전기 연료 펌프(11)를 제어하기 위한 제어 신호(S3)이다. 연료 공급 시스템의 적당한 위치에 설치되어 있는 압력 센서(24)는 형성되는 연료 압력에 관한 정보를 제어 장치(23)에 제공한다.In the case where the fuel supply system is controlled by the control device 23, the control device 23 receives necessary information or signals through the inlet E and sends out control signals through the outlet A. Such a control signal is, for example, a control signal S1 for causing injection through the injection valves 14, 15, 16, 17. The other control signal is a control signal S2 for the operation of the valve 21 and a control signal S3 for controlling the electric fuel pump 11. The pressure sensor 24 provided at an appropriate position of the fuel supply system provides the control device 23 with information about the fuel pressure to be formed.

제 1 도에 도시된 연료 공급 장치에서는 제어 장치(23)가 소정의 조건하에서 밸브(21)를 개방 또는 폐쇄함으로써 연료 압력을 제어할 수 있다. 밸브(21)가 개방되면, 시스템 압력(PS)은 압력 조절기(20)에 의해 조절된 압력(PD)과 같다. 밸브(21)가 폐쇄되면, 시스템 압력은 상승하고 PS는 PD 보다도 커진다.In the fuel supply device shown in FIG. 1, the control device 23 can control the fuel pressure by opening or closing the valve 21 under predetermined conditions. When the valve 21 is open, the system pressure PS is equal to the pressure PD regulated by the pressure regulator 20. When the valve 21 is closed, the system pressure rises and PS is greater than PD.

압력의 상승은 제어 장치(23)가 고온 시동을 검출한 경우에 발생한다. 이와 같은 고온 시동의 검출은, 예를 들어 내연 기관에 배치된 온도 센서(25)의 신호 평가에 의해 행해진다.The increase in pressure occurs when the control device 23 detects a high temperature start. Detection of such a high temperature start is performed by the signal evaluation of the temperature sensor 25 arrange | positioned, for example in an internal combustion engine.

제 2 도에는 본 발명의 제 2 실시예가 도시되어 있다. 이 경우, 동일 구성 부재에 제 1 도와 동일한 참조 부호로 표시하였다.2 shows a second embodiment of the present invention. In this case, the same structural members are denoted by the same reference numerals as the first degree.

제 2 도의 실시예에서 쓰로틀부는 설치되어 있지 않으며, 이 때문에 압력 조절기(20)와 밸브(21)의 배치 순서가 역으로 되어 있다. 연료 파이프(12)에는 연료 반송 통로(19)와 전기 연료 펌프(11) 사이에 체크 밸브(27)가 위치하고 있다. 또한, 과압 밸브(28)를 구비한 부가적인 파이프(26)가 체크 밸브(27)와 연료 탱크(10) 사이에 설치되어 있다.In the embodiment of FIG. 2, the throttle portion is not provided, and therefore, the arrangement order of the pressure regulator 20 and the valve 21 is reversed. In the fuel pipe 12, a check valve 27 is located between the fuel conveying passage 19 and the electric fuel pump 11. In addition, an additional pipe 26 with an overpressure valve 28 is provided between the check valve 27 and the fuel tank 10.

주어진 운전 상태에 따라 제어 장치(23)가 밸브(21)를 개방 또는 폐쇄한다. 통상의 운전에서 밸브는 개방되고, 시스템 압력(PS)은 압력 조절기(20)의 압력(PD)과 같다. 이와는 달리, 제어 장치(23)에 의해 고온 시동이 검출된 경우에는, 밸브(21)는 폐쇄되고 시스템 압력(PS)은 과압 밸브(28)에 의해 결정된 과압력(PUe)까지 상승한다. PUe는 과압 밸브(28)의 작동 압력이기도 하다. 중지하는 단계에서는 압력(P)이 PUe와 같게 된다.The control device 23 opens or closes the valve 21 according to the given operating state. In normal operation the valve is open and the system pressure PS is equal to the pressure PD of the pressure regulator 20. In contrast, when a high temperature start is detected by the control device 23, the valve 21 is closed and the system pressure PS rises to the overpressure PUe determined by the overpressure valve 28. PUe is also the operating pressure of overpressure valve 28. In the step of stopping, the pressure P becomes equal to PUe.

제 2 도에는 전기 연료 펌프(11)와 과압 밸브(28) 및 체크 밸브(27)와 밸브(21)가 서로 별개로 설치되어 있다. 과압 밸브(28)와 체크 밸브(27) 및 밸브(21)가 전기 연료 펌프(11)에 내장될 수 있거나 전기 연료 펌프(11)에 근접하게 설치될 수 있다.2, the electric fuel pump 11, the overpressure valve 28, the check valve 27, and the valve 21 are provided separately from each other. The overpressure valve 28 and the check valve 27 and the valve 21 may be built in the electric fuel pump 11 or may be installed in close proximity to the electric fuel pump 11.

제 1 도는 본 발명의 제 1 실시예를 도시한 도면.1 shows a first embodiment of the present invention.

제 2 도는 본 발명의 제 2 실시예를 도시한 도면.2 shows a second embodiment of the present invention.

*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

10: 연료 탱크 11: 전기 연료 펌프10: fuel tank 11: electric fuel pump

12: 연료 파이프 13: 분배 장치12: fuel pipe 13: distribution device

14, 15, 16, 17: 분사 밸브 18: 흡입 파이프14, 15, 16, 17: injection valve 18: suction pipe

19: 연료 반송 통로 20: 압력 조절기19: fuel return passage 20: pressure regulator

21: 밸브 22: 쓰로틀부21: valve 22: throttle part

23: 제어 장치 24: 압력 센서23: control unit 24: pressure sensor

25: 온도 센서 26: 파이프25: temperature sensor 26: pipe

27: 체크 밸브 28: 과압 밸브27: check valve 28: overpressure valve

E: 입구 A: 출구E: Inlet A: Outlet

S1, S2, S3: 제어 신호S1, S2, S3: Control Signal

Claims (5)

연료 펌프가 설치되어 있으며, 상기 연료 펌프는 연료를 연료 탱크로부터 연료 파이프 및 분배 장치를 통해 분사 밸브에 공급하고,A fuel pump is installed, the fuel pump supplies fuel from the fuel tank to the injection valve through the fuel pipe and the distribution device, 연료 반송 통로가 설치되어 있으며, 상기 연료 반송 통로는 1 개 이상의 압력 조절기(20)와 밸브(21)를 갖고 과잉 연료를 상기 연료 탱크로 반송하며,A fuel conveying passage is provided, the fuel conveying passage having at least one pressure regulator 20 and a valve 21 for conveying excess fuel to the fuel tank, 미리 설정 가능한 조건에서 연료 압력을 상승시키는 부가적인 수단이 설치되어 있고,Additional means are provided for raising fuel pressure under pre-settable conditions, 상기 부가적인 수단은 내연기관의 제어 장치(23)를 포함하며, 내연기관의 운전 상태에 관한 정보가 입구(E)를 통해 상기 제어 장치에 공급되고,Said additional means comprises a control device 23 of the internal combustion engine, wherein information on the operating state of the internal combustion engine is supplied to the control device via an inlet E, 상기 제어 장치는 상기 정보를 기초로 특정 운전 상태의 유무, 특히 고온 시동의 유무를 검출하며,The control device detects the presence or absence of a specific operating state, in particular the presence of a high temperature start, based on the information, 상기 밸브 및/또는 상기 전기 연료 펌프 및/또는 상기 압력 조절기를 제어하는 형식의 내연기관용 연료 공급 장치에 있어서,In the fuel supply apparatus for an internal combustion engine of the type which controls the said valve and / or the said electric fuel pump and / or the said pressure regulator, 상기 제어 장치는 고온 시동이 검출된 경우에 상기 압력 조절기(20)의 압력(PD) 보다 높은 시스템 압력(PS)을 발생시키기 위해 상기 밸브(21)를 폐쇄하고, 고온 시동 종료 후에 밸브(21)를 개방하며, 통상의 상태에서는 상기 밸브(21)를 개방상태로 유지시키는 것을 특징으로 하는 내연기관용 연료 공급 장치.The control device closes the valve 21 to generate a system pressure PS higher than the pressure PD of the pressure regulator 20 when a high temperature start is detected, and the valve 21 after the end of the high temperature start. The fuel supply device for an internal combustion engine, characterized in that for maintaining the valve (21) in the open state. 제 1 항에 있어서,The method of claim 1, 상기 압력 조절기(20)와 상기 밸브(21)는 연료 반송 통로에 설치되어 있고, 상기 연료 반송 통로는 탱크와 떨어진 전기 연료 펌프의 측면에서 상기 연료 파이프(12)에 접속되어 있는 것을 특징으로 하는 내연 기관용 연료 공급 장치.The pressure regulator 20 and the valve 21 are provided in the fuel conveying passage, and the fuel conveying passage is connected to the fuel pipe 12 at the side of the electric fuel pump away from the tank. Engine fuel supply. 제 1 항 또는 제 2 항에 있어서,The method according to claim 1 or 2, 상기 밸브(21)와 평행하게 쓰로틀부(22)가 위치하고 있고, 상기 쓰로틀부(22)에 의해 상기 연료 반송 통로에서의 횡단면 축소가 행해지는 것을 특징으로 하는 내연 기관용 연료 공급 장치.The throttle part (22) is located parallel to the said valve (21), and the throttle part (22) performs cross-sectional reduction in the said fuel conveyance path | route, The fuel supply apparatus for internal combustion engines characterized by the above-mentioned. 제 1 항 또는 제 2 항에 있어서,The method according to claim 1 or 2, 상기 분배 장치(13)와 상기 연료 탱크(10) 사이에 별도의 연료 파이프가 설치되어 있으며, 상기 연료 파이프는 과압 밸브(28)를 갖고 있고, 상기 밸브(21)의 연료 파이프(12)로의 접속부와 상기 전기 연료 펌프(11)의 접속부 사이에 체크 밸브(27)가 설치되어 있는 것을 특징으로 하는 내연 기관용 연료 공급 장치.A separate fuel pipe is provided between the distribution device 13 and the fuel tank 10, the fuel pipe having an overpressure valve 28, and a connection portion of the valve 21 to the fuel pipe 12. And a check valve (27) is provided between the connection portion of the electric fuel pump and the electric fuel pump (11). 제 1 항에 있어서,The method of claim 1, 상기 과압 밸브(28), 상기 체크 밸브(27) 및 상기 밸브(21)는 상기 전기 연료 펌프(11)에 내장되거나 또는 상기 전기 연료 펌프(11)에 공간적으로 매우 근접하게 설치되어 있는 것을 특징으로 하는 내연 기관용 연료 공급 장치.The overpressure valve 28, the check valve 27, and the valve 21 may be embedded in the electric fuel pump 11 or installed in close proximity to the electric fuel pump 11. Fuel supply device for an internal combustion engine.
KR1019950049113A 1994-12-09 1995-12-08 Fuel supply device for internal combustion engine KR100407879B1 (en)

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DEP4443836.2 1994-12-09
DE4443836A DE4443836A1 (en) 1994-12-09 1994-12-09 Combustion engine fuel supply appts.

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KR960023745A (en) 1996-07-20
ES2120876A1 (en) 1998-11-01
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IT1277228B1 (en) 1997-11-05
DE4443836A1 (en) 1996-06-13

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