EP0528150A1 - System and method for feeding fuel to a fine-particle-mixed fuel burning diesel engine - Google Patents

System and method for feeding fuel to a fine-particle-mixed fuel burning diesel engine Download PDF

Info

Publication number
EP0528150A1
EP0528150A1 EP92111211A EP92111211A EP0528150A1 EP 0528150 A1 EP0528150 A1 EP 0528150A1 EP 92111211 A EP92111211 A EP 92111211A EP 92111211 A EP92111211 A EP 92111211A EP 0528150 A1 EP0528150 A1 EP 0528150A1
Authority
EP
European Patent Office
Prior art keywords
fuel
oil
valve
injection valve
pressure pump
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP92111211A
Other languages
German (de)
French (fr)
Other versions
EP0528150B1 (en
Inventor
Hiroshi c/o Nagasaki Res. & Dev. Center Nakagawa
Yuuji c/o Nagasaki Res. & Dev. Center Oda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Publication of EP0528150A1 publication Critical patent/EP0528150A1/en
Application granted granted Critical
Publication of EP0528150B1 publication Critical patent/EP0528150B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • 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
    • F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
    • F02M43/02—Pumps peculiar thereto
    • 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
    • F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

  • the present invention relates to a system and a method for feeding fuel to a diesel engine which make use of fuel oil containing fine particles of solid fuel such as pulverized coal or the like.
  • fuel oil is fed from a fuel tank 101 through a fuel feed pump 102 to a fuel injection pump 103, then it is introduced into a fuel valve 108 as high-pressure fuel, and it is injected from a nozzle hole 109 into a combustion chamber of the engine, but in the case where in place of fuel for use in a diesel engine, mixed fuel consisting of pulverized coal and water or fuel oil is pressurized to a high pressure and injected to be burnt, seizure of a plunger would occur due to solid material of the mixed fuel within a plunger chamber and continued operations of the engine could not be effected.
  • reference numeral 104 designates a plunger accommodated within a barrel 105 of a fuel injection pump 103
  • numeral 106 designates a delivery valve of the fuel injection pump 103
  • numeral 107 designates a feed pipe of fuel
  • numeral 110 designates a needle valve of the fuel injection valve 108
  • numeral 111 designates an oil reservoir provided on the upstream side of the needle valve 110 within the fuel injection valve 108
  • numeral 112 designates a spring for biasing the needle valve 110.
  • a fuel feed system for a fine-particle-mixed fuel burning diesel engine in which fuel oil containing fine particles of solid fuel is employed for a diesel engine to be burnt, which comprises an injection valve (9) including a needle valve (11) for opening and closing a path between an oil reservoir (12) and a nozzle hole (10), a fuel feed pipe (15) between the oil reservoir (12) of the injection valve and a fuel tank (19) for fuel containing fine particles, a control valve (16) for controlling the amount of fuel flowing through the fuel feed pipe (15) a check valve (13) provided within the injection valve (9) to allow only the flow of fuel flowing from the control valve (16) towards the oil reservoir (12), a high-pressure pump (3) for pressurizing oil within an oil tank (1) and feeding it to the injection valve (9), a pressure wave propagation pipe (8) connecting between a delivery port of the high-pressure pump (3) and the oil reservoir (12) in the injection valve (9), a circulation valve (21) for opening and closing the pressure wave propagation pipe (8), and
  • the above-feature fuel feed system for a fine-particle-mixed fuel burning diesel engine which comprises a control rack detector (23) for detecting a position of a control rack (24) which controls a delivery amount of the high-pressure pump (3) and for inputting a detection signal to the control device (20).
  • a method for feeding fuel to a fine-particle-mixed fuel burning diesel engine in which fuel oil containing fine particles of solid fuel is employed for a diesel engine to be burnt, which comprises steps of feeding fuel containing fine particles of solid fuel within a fuel tank (19) to an oil reservoir (12) within an injection valve from the side of a needle valve seat of the injection valve through a check valve (13) by means of a pump (18), pressurizing the fuel within the oil reservoir by high-pressure oil which has been pressurized by a high-pressure pump (3) and which has passed through a pressure wave propagation pipe (8), and injecting the fuel through a nozzle hole (10) of the injection valve.
  • the last-featured method for feeding fuel to a fine-particle-mixed fuel burning diesel engine which comprises the steps of inputting a signal issued from a control rack detector (23) provided to detect a position of a control rack (24) for controlling a delivery amount of the high-pressure pump (3) to a control device (20), controlling a sending amount of fuel containing fine particles of solid fuel sent out from the pump (18) so as to meet with the delivery amount of the high-pressure pump (3) by controlling a control valve (16) by means of the control device (20), and sending the fuel containing particles of solid fuel into the oil reservoir (12) within the injection valve through the check valve (13).
  • fuel containing fine particles of the amount controlled by the control valve which is in turn controlled by the control device, is sent from the fuel tank through the fuel feed pipe to the oil reservoir in the fuel injection valve.
  • the oil within the oil tank is pressurized by the high-pressure pump, and a pressure wave of the oil is transmitted to the above-mentioned oil reservoir through the pressure wave propagation pipe, and the above-mentioned fuel containing fine particles which is present within the oil reservoir is injected through the nozzle hole of the injection valve.
  • the oil sent to the injection valve through the circulation valve controlled by the control device is returned to the oil tank, and so, deterioration of the oil can be precluded.
  • fuel containing fine particles is never fed to the high-pressure pump, hence seizure of the plunger of the same pump does not occur, and also, only the fuel containing fine particles is injected through the nozzle hole of the injection valve.
  • a detection signal issued from the control rack detector for detecting a position of the control rack which controls a delivery amount of the high-pressure pump is input to the control device, and the amount of fuel containing fine particles to be fed to the oil reservoir is controlled on the basis of the amount of oil delivered from the high-pressure pump by the control device, only the same fuel containing fine particles is surely injected through the nozzle hole of the injection valve, and the oil propagating the pressure wave can be prevented from being injected through the nozzle hole.
  • reference numeral 1 designates an oil tank which accommodates oil for propagating a pressure wave to a fuel valve
  • numeral 2 designates an oil feed pump
  • numeral 3 designates a high-pressure injection pump
  • numeral 4 designates a plunger
  • numeral 5 designates a barrel
  • numeral 6 designates a delivery valve
  • numeral 7 designates a pressure-regulating check valve
  • numeral 8 designates a pressure wave propagation pipe
  • numeral 9 designates a fuel injection valve
  • numeral 10 designates a nozzle hole
  • numeral 11 designates a needle valve
  • numeral 12 designates an oil reservoir section
  • numeral 13 designates a check valve
  • numeral 14 designates a spring
  • numeral 15 designates a feed pipe
  • numeral 16 designates a control valve
  • numeral 17 designates a fuel feed pipe
  • numeral 18 designates a fuel feed pipe
  • numeral 19 designates a fuel tank for fuel containing fine particles of coal
  • numeral 20 designates a control
  • Fuel containing fine particles of coal is fed by the fuel feed pump 18 from the fuel tank 19 through the fuel feed pipe 17 and enters the control valve 16, and during a pause period of fuel injection and after circulation of the oil in the pressure propagation pipe 8 has finished, a predetermined amount of fuel containing fine particles of coal is sent into the fuel injection valve 9 through the feed pipe 15.
  • the circulation valve 21 is opened via the drive motor 21' as controlled by the control device 20, thereby the oil for use in pressure wave propagation is circulated via the circulation pipe 22 to the oil tank 1, and so, deterioration of the oil can be prevented.
  • fuel containing fine particles of solid fuel can be injected at a high pressure from an injection valve into a combustion chamber without introducing such fine-particle-mixed fuel into a barrel (plunger chamber) in a high-pressure pump.
  • seizure of a high-pressure pump plunger caused by fine particles of solid fuel having a high hardness can be precluded, and in addition, since provision is made such that the oil for propagating a pressure wave from a high-pressure pump is also circulated, the fault in propagation of a hydraulic pressure due to deterioration of oil can be also eliminated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

An improved system and method for feeding fuel, which obviates the shortcomings of the fuel feeding system in the prior art, in which mixed fuel consisting of fine particles of solid fuel such as pulverized coal or the like and fuel oil, is directly sent under a pressure by means of a high-pressure pump but seizure of a pump plunger is caused, and which enables the fuel feeding system in the prior art to achieve good operations, are disclosed. A predetermined amount of fuel oil containing fine particles of solid fuel is fed into an oil reservoir (12) within an injection valve (9) through a control valve (16), and this fuel oil is injected through a nozzle hole (10) of the injection valve (9) with the aid of oil pressurized by means of a high-pressure pump (3). Thereby, only the above-mentioned fuel oil is injected, but the above-described pressurized oil is not injected, and also it never occurs that the aforementioned fuel oil enters the high-pressure pump (3), resulting in seizure of a plunger of the pump. The oil fed to the oil reservoir (12) is returned to an oil tank (1) via a circulation valve (21), and so, deterioration of the oil can be precluded. In addition, since the control valve (16) is regulated by a signal indicating a position of a control rack which controls a delivery amount of the high-pressure pump (3), fuel oil of the amount corresponding to the delivery amount of the high-pressure pump (3) is sent to the aforementioned oil reservoir (12), and so, only the above-mentioned fuel oil can be reliably injected.

Description

    BACKGROUND OF THE INVENTION: Field of the Invention:
  • The present invention relates to a system and a method for feeding fuel to a diesel engine which make use of fuel oil containing fine particles of solid fuel such as pulverized coal or the like.
    • Description of the Prior Art:
  • In a conventional diesel engine, as shown in Fig. 2 fuel oil is fed from a fuel tank 101 through a fuel feed pump 102 to a fuel injection pump 103, then it is introduced into a fuel valve 108 as high-pressure fuel, and it is injected from a nozzle hole 109 into a combustion chamber of the engine, but in the case where in place of fuel for use in a diesel engine, mixed fuel consisting of pulverized coal and water or fuel oil is pressurized to a high pressure and injected to be burnt, seizure of a plunger would occur due to solid material of the mixed fuel within a plunger chamber and continued operations of the engine could not be effected.
  • It is to be noted that in Fig. 2, reference numeral 104 designates a plunger accommodated within a barrel 105 of a fuel injection pump 103, numeral 106 designates a delivery valve of the fuel injection pump 103, numeral 107 designates a feed pipe of fuel, numeral 110 designates a needle valve of the fuel injection valve 108, numeral 111 designates an oil reservoir provided on the upstream side of the needle valve 110 within the fuel injection valve 108, and numeral 112 designates a spring for biasing the needle valve 110.
  • Inherently, in a high-pressure fuel injection pump, fuel having solid material contained therein filtered out is employed, and it is improper in view of the mechanism of fuel injection to directly feed mixed fuel consisting of solid material of pulverized coal and fuel oil in itself to a fuel injection pump, because of occurrence of seizure of a plunger.
    • SUMMARY OF THE INVENTION:
  • It is therefore one object of the present invention to provide a system and a method for feeding fuel to a fine-particle-mixed fuel burning diesel engine, which obviate the above-described shortcoming of those in the prior art that seizure of a pump plunger would occur, and which can achieve good operations even if mixed fuel consisting of fine particles of solid fuel and fuel oil is employed.
  • According to one feature of the present invention, there is provided a fuel feed system for a fine-particle-mixed fuel burning diesel engine, in which fuel oil containing fine particles of solid fuel is employed for a diesel engine to be burnt, which comprises an injection valve (9) including a needle valve (11) for opening and closing a path between an oil reservoir (12) and a nozzle hole (10), a fuel feed pipe (15) between the oil reservoir (12) of the injection valve and a fuel tank (19) for fuel containing fine particles, a control valve (16) for controlling the amount of fuel flowing through the fuel feed pipe (15) a check valve (13) provided within the injection valve (9) to allow only the flow of fuel flowing from the control valve (16) towards the oil reservoir (12), a high-pressure pump (3) for pressurizing oil within an oil tank (1) and feeding it to the injection valve (9), a pressure wave propagation pipe (8) connecting between a delivery port of the high-pressure pump (3) and the oil reservoir (12) in the injection valve (9), a circulation valve (21) for opening and closing the pressure wave propagation pipe (8), and a control device (20) for controlling opening and closing of the circulation valve and the control valve (16).
  • According to another feature of the present invention, there is provided the above-feature fuel feed system for a fine-particle-mixed fuel burning diesel engine, which comprises a control rack detector (23) for detecting a position of a control rack (24) which controls a delivery amount of the high-pressure pump (3) and for inputting a detection signal to the control device (20).
  • According to yet another feature of the present invention, there is provided a method for feeding fuel to a fine-particle-mixed fuel burning diesel engine, in which fuel oil containing fine particles of solid fuel is employed for a diesel engine to be burnt, which comprises steps of feeding fuel containing fine particles of solid fuel within a fuel tank (19) to an oil reservoir (12) within an injection valve from the side of a needle valve seat of the injection valve through a check valve (13) by means of a pump (18), pressurizing the fuel within the oil reservoir by high-pressure oil which has been pressurized by a high-pressure pump (3) and which has passed through a pressure wave propagation pipe (8), and injecting the fuel through a nozzle hole (10) of the injection valve.
  • According to still another feature of the present invention, there is provided the last-featured method for feeding fuel to a fine-particle-mixed fuel burning diesel engine, which comprises the steps of inputting a signal issued from a control rack detector (23) provided to detect a position of a control rack (24) for controlling a delivery amount of the high-pressure pump (3) to a control device (20), controlling a sending amount of fuel containing fine particles of solid fuel sent out from the pump (18) so as to meet with the delivery amount of the high-pressure pump (3) by controlling a control valve (16) by means of the control device (20), and sending the fuel containing particles of solid fuel into the oil reservoir (12) within the injection valve through the check valve (13).
  • According to the present invention provided with the above-described features, fuel containing fine particles of the amount controlled by the control valve which is in turn controlled by the control device, is sent from the fuel tank through the fuel feed pipe to the oil reservoir in the fuel injection valve. On the other hand, the oil within the oil tank is pressurized by the high-pressure pump, and a pressure wave of the oil is transmitted to the above-mentioned oil reservoir through the pressure wave propagation pipe, and the above-mentioned fuel containing fine particles which is present within the oil reservoir is injected through the nozzle hole of the injection valve. When this injection has finished, the oil sent to the injection valve through the circulation valve controlled by the control device is returned to the oil tank, and so, deterioration of the oil can be precluded. In this way, fuel containing fine particles is never fed to the high-pressure pump, hence seizure of the plunger of the same pump does not occur, and also, only the fuel containing fine particles is injected through the nozzle hole of the injection valve.
  • In addition, according to the present invention, owing to the additional feature that a detection signal issued from the control rack detector for detecting a position of the control rack which controls a delivery amount of the high-pressure pump is input to the control device, and the amount of fuel containing fine particles to be fed to the oil reservoir is controlled on the basis of the amount of oil delivered from the high-pressure pump by the control device, only the same fuel containing fine particles is surely injected through the nozzle hole of the injection valve, and the oil propagating the pressure wave can be prevented from being injected through the nozzle hole.
  • The above-mentioned and other objects, features and advantages of the present invention will become more apparent by reference to the following description of preferred embodiments of the invention taken in conjunction with the accompanying drawings.
    • BRIEF DESCRIPTION OF THE DRAWINGS:
  • In the accompanying drawings:
    • Fig. 1 is a schematic view showing one preferred embodiment of the present invention; and
    • Fig. 2 is a schematic view showing one example of a fuel injection system for a diesel engine in the prior art.
    DESCRIPTION OF THE PREFERRED EMBODIMENT:
  • Now one preferred embodiment of the present invention will be described with reference to Fig. 1. In this figure, reference numeral 1 designates an oil tank which accommodates oil for propagating a pressure wave to a fuel valve, numeral 2 designates an oil feed pump, numeral 3 designates a high-pressure injection pump, numeral 4 designates a plunger, numeral 5 designates a barrel, numeral 6 designates a delivery valve, numeral 7 designates a pressure-regulating check valve, numeral 8 designates a pressure wave propagation pipe, numeral 9 designates a fuel injection valve, numeral 10 designates a nozzle hole, numeral 11 designates a needle valve, numeral 12 designates an oil reservoir section, numeral 13 designates a check valve, numeral 14 designates a spring, numeral 15 designates a feed pipe, numeral 16 designates a control valve, numeral 17 designates a fuel feed pipe, numeral 18 designates a fuel feed pipe, numeral 19 designates a fuel tank for fuel containing fine particles of coal, numeral 20 designates a control device, numeral 21 designates a circulation valve, numeral 21' designates a drive motor controlled by the control device 20, numeral 22 designates a circulation pipe, and numeral 23 designates a control rack detector for detecting a position of a control rack 24 which controls a delivery amount of the high-pressure injection pump.
  • Fuel containing fine particles of coal is fed by the fuel feed pump 18 from the fuel tank 19 through the fuel feed pipe 17 and enters the control valve 16, and during a pause period of fuel injection and after circulation of the oil in the pressure propagation pipe 8 has finished, a predetermined amount of fuel containing fine particles of coal is sent into the fuel injection valve 9 through the feed pipe 15. At this time, representing a valve-opening pressure of the pressure-regulating check valve 7 in the high-pressure injection pump 3 by PR, a valve-opening pressure of the check valve 13 by PP and a valve-opening pressure of the needle valve 11 by PN, and if these values are preset so as to fulfil the relations of PN > PP > PR, the fuel fed from the fuel tank 19 would pass through the check valve 13 and would flow into the oil reservoir section 12 in the fuel injection valve 9. Consequently, the oil for use in propagation of a pressure which was present in this oil reservoir section, is pushed back towards the high-pressure injection pump 3 through the pressure wave propagation pipe 8, and flows inversely into the barrel (plunger chamber) 5 by forcibly opening the pressure-regulating check valve 7.
  • In addition, by detecting a position of the control rack 24 for controlling a delivery amount of high-pressure oil by means of the control rack detector 23 and inputting the detection signal to the control device 20 for controlling an opening/closing timing period of the control valve 16, an appropriate amount of fuel containing fine particles of coal is filled in the oil reservoir section 12.
  • Under the above-mentioned condition, when the plunger 4 in the high-pressure fuel pump 3 rises to push up the delivery valve 6 and oil feed starts, the oil for propagating a pressure wave is sent through the pressure, wave propagation pipe 8 to the side of the fuel injection valve 9, the pressure in the oil reservoir section 12 rises higher than the pressure PN, hence the needle valve 11 opens against the resilient biasing force of the spring 14, and injection through the nozzle hole 10 commences.
  • At this time, fuel of the amount corresponding to the position of the control rack of the high-pressure injection pump has been preliminarily fed into the oil reservoir section, the oil for use in pressure wave propagation is not injected. Also, since the check valve 13 is closed, even if a high pressure is applied the fuel does not flow inversely towards the fuel tank.
  • After finishment of the fuel injection, the circulation valve 21 is opened via the drive motor 21' as controlled by the control device 20, thereby the oil for use in pressure wave propagation is circulated via the circulation pipe 22 to the oil tank 1, and so, deterioration of the oil can be prevented.
  • As will be apparent from the description of the preferred embodiment above, according to the present invention, owing to the above-mentioned structural feature, fuel containing fine particles of solid fuel can be injected at a high pressure from an injection valve into a combustion chamber without introducing such fine-particle-mixed fuel into a barrel (plunger chamber) in a high-pressure pump.
  • Accordingly, seizure of a high-pressure pump plunger caused by fine particles of solid fuel having a high hardness can be precluded, and in addition, since provision is made such that the oil for propagating a pressure wave from a high-pressure pump is also circulated, the fault in propagation of a hydraulic pressure due to deterioration of oil can be also eliminated.
  • While a principle of the present invention has been described above in connection to one preferred embodiment of the invention, it is intended that all matter contained in the above description and illustrated in the accompanying drawings shall be interpreted to be illustrative and not as a limitation to the scope of the present invention.

Claims (4)

  1. A fuel feed system for a fine-particle-mixed fuel burning diesel engine, in which fuel oil containing fine particles of solid fuel is employed for a diesel engine to be burnt; characterized in that said system comprises an injection valve (9) including a needle valve (11) for opening and closing a path between an oil reservoir (12) and a nozzle hole (10), a fuel feed pipe (15) between the oil reservoir (12) of said injection valve and a fuel tank (19) for fuel containing fine particles, a control valve (16) for controlling the amount of fuel flowing through said fuel feed pipe (15), a check valve (13) provided within said injection valve (9) to allow only the flow of fuel flowing from the control valve (16) towards the oil reservoir (12), a high-pressure pump (3) for pressurizing oil within an oil tank (1) and feeding it to the injection valve (9), a pressure wave propagation pipe (8) connecting between a delivery port of said high-pressure pump (3) and the oil reservoir (12) in the injection valve (9), a circulation valve (21) for opening and closing said pressure wave propagation pipe (8), and a control device (20) for controlling opening and closing of said circulation valve (21) and said control valve (16).
  2. A fuel feed system for a fine-particle-mixed fuel burning diesel engine as claimed in Claim 1; characterized in that said system comprises a control rack detector (23) for detecting a position of a control rack (24) which Controls a delivery amount of said high-pressure pump (3) and for inputting a detection signal to said control device (20).
  3. A method for feeding fuel to a fine-particle-mixed fuel burning diesel engine, in which fuel oil containing fine particles of solid fuel is employed for a diesel engine to be burnt; characterized by steps of feeding fuel containing fine particles of solid fuel within a fuel tank (19) to an oil reservoir (12) within an injection valve from the side of a needle valve seat of said injection valve through a check valve (13) by means of a pump (18), pressurizing the fuel within said oil reservoir by high-pressure oil which has been pressurized by a high-pressure pump (3) and which has passed through, a pressure wave propagation pipe (8), and injecting the fuel through a nozzle hole (10) of the injection valve.
  4. A method for feeding fuel to a fine-particle-mixed fuel burning diesel engine as claimed in Claim 3; characterized by steps of inputting a signal issued from a control rack detector (23) provided to detect a position of a control rack (24) for controlling a delivery amount of the high-pressure pump (3) to a control device (20), controlling a sending amount of fuel containing fine particles of solid fuel sent out from said pump (18) so as to meet with the delivery amount of said high-pressure pump (3) by controlling a control valve (16) by means of said control device (20), and sending said fuel containing fine particles of solid fuel into the oil reservoir (12) within the injection valve through the check valve (13).
EP92111211A 1991-07-23 1992-07-02 System and method for feeding fuel to a fine-particle-mixed fuel burning diesel engine Expired - Lifetime EP0528150B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3205630A JP2862104B2 (en) 1991-07-23 1991-07-23 Fuel supply method for diesel engine burning particulate fuel
JP205630/91 1991-07-23

Publications (2)

Publication Number Publication Date
EP0528150A1 true EP0528150A1 (en) 1993-02-24
EP0528150B1 EP0528150B1 (en) 1996-06-05

Family

ID=16510074

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92111211A Expired - Lifetime EP0528150B1 (en) 1991-07-23 1992-07-02 System and method for feeding fuel to a fine-particle-mixed fuel burning diesel engine

Country Status (5)

Country Link
EP (1) EP0528150B1 (en)
JP (1) JP2862104B2 (en)
KR (1) KR970002090B1 (en)
DE (1) DE69211250T2 (en)
DK (1) DK0528150T3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2711735A1 (en) * 1993-10-29 1995-05-05 Daimler Benz Ag Fuel injection system for an internal combustion engine.
DE10330511A1 (en) * 2003-07-05 2005-02-10 Man B & W Diesel Ag Internal combustion engine

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0747923A1 (en) * 1995-06-09 1996-12-11 VIDEOCOLOR S.p.A. Deflection yoke locking arrangement
WO2013142921A1 (en) * 2012-03-29 2013-10-03 Commonwealth Scientific And Industrial Research Organisation Injection of heavy and particulate laden fuels
CN105715436B (en) * 2016-01-14 2016-11-23 吉林大学 A kind of quantitative mixing arrangement of vehicular engine liquid fuel
CN105840381B (en) * 2016-03-18 2018-08-10 江苏大学 Natural Gas ＆ Diesel Dual Fuel Engine sprays mixed characteristic research device and its control method
EP3829756A4 (en) * 2018-08-02 2022-04-27 Nanyang Technological University Janus particle preparation through two-phase interface assembly

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2924128A1 (en) * 1979-06-15 1980-12-18 Motoren Werke Mannheim Ag Diesel engine using different fuel for starting and running - has single injector delivering starting and running fuel in sequence
EP0104368A1 (en) * 1982-08-31 1984-04-04 George Stan Baranescu Injection system with stratified fuel charge
US4699103A (en) * 1985-01-28 1987-10-13 Nippondenso Co., Ltd. Fuel injection system
EP0282819A2 (en) * 1987-03-15 1988-09-21 Mitsubishi Jukogyo Kabushiki Kaisha Injection system for a dual-fuel engine
EP0418601B1 (en) * 1989-09-21 1992-11-11 Robert Bosch Gmbh Injection device for a diesel engine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4862837A (en) * 1988-04-21 1989-09-05 Defense Research Technologies, Inc. Fuel injection of coal slurry using vortex nozzles and valves

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2924128A1 (en) * 1979-06-15 1980-12-18 Motoren Werke Mannheim Ag Diesel engine using different fuel for starting and running - has single injector delivering starting and running fuel in sequence
EP0104368A1 (en) * 1982-08-31 1984-04-04 George Stan Baranescu Injection system with stratified fuel charge
US4699103A (en) * 1985-01-28 1987-10-13 Nippondenso Co., Ltd. Fuel injection system
EP0282819A2 (en) * 1987-03-15 1988-09-21 Mitsubishi Jukogyo Kabushiki Kaisha Injection system for a dual-fuel engine
EP0418601B1 (en) * 1989-09-21 1992-11-11 Robert Bosch Gmbh Injection device for a diesel engine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 163 (M-487)(2219) 11 June 1986 & JP-A-61 014 465 ( ISUZU ) 22 January 1986 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2711735A1 (en) * 1993-10-29 1995-05-05 Daimler Benz Ag Fuel injection system for an internal combustion engine.
DE10330511A1 (en) * 2003-07-05 2005-02-10 Man B & W Diesel Ag Internal combustion engine

Also Published As

Publication number Publication date
DE69211250T2 (en) 1996-12-12
DK0528150T3 (en) 1996-10-21
KR930002656A (en) 1993-02-23
DE69211250D1 (en) 1996-07-11
JP2862104B2 (en) 1999-02-24
JPH0526126A (en) 1993-02-02
KR970002090B1 (en) 1997-02-22
EP0528150B1 (en) 1996-06-05

Similar Documents

Publication Publication Date Title
US4864990A (en) Injection system for a dual-fuel engine
US4566416A (en) Accumulator nozzle fuel injection system
US5245953A (en) Emulsion fuel engine
DE69218326T2 (en) PRESSURE ACCUMULATING FUEL INJECTOR
EP0718489B1 (en) Injection arrangement for an internal combustion engine
US4590904A (en) Fuel injection apparatus
JP2645577B2 (en) Electronic unit injector
US5170751A (en) Water-injection diesel engine
EP0601038B1 (en) Injecting apparatus
EP0459083B1 (en) Water-injection diesel engine
EP0528150A1 (en) System and method for feeding fuel to a fine-particle-mixed fuel burning diesel engine
JPS61286573A (en) Fuel injector for engine
GB2291123A (en) I.c.engine fuel and water injection system
US6422209B1 (en) Magnet injector for fuel reservoir injection systems
US4750462A (en) Fuel injection apparatus for internal combustion engines
EP1097303A2 (en) Fuel injection device
US5251576A (en) System and method for feeding fuel to a fine-particle-mixed fuel burning diesel engine
GB2110756A (en) A fuel injection system for internal combustion engines
US4467963A (en) Single dump single solenoid fuel injector
JPS6120303Y2 (en)
JP2000505859A (en) Injector system for oil regeneration in combustion engines
EP0974750B1 (en) Fuel-injection pump having a vapor-prevention accumulator
JP3040609B2 (en) Two-fluid injection fuel valve
JP3165502B2 (en) Diesel engine fuel injection system
JP3212324B2 (en) Water injection unit injector device

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19920730

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE DK GB IT LI

17Q First examination report despatched

Effective date: 19940603

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE DK GB IT LI

REF Corresponds to:

Ref document number: 69211250

Country of ref document: DE

Date of ref document: 19960711

ITF It: translation for a ep patent filed
REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20010625

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20010627

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20010628

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20010712

Year of fee payment: 10

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020702

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020731

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030201

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20020702

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050702