EP0424797A1 - Soupape de commande pour l'injection de combustible - Google Patents

Soupape de commande pour l'injection de combustible Download PDF

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Publication number
EP0424797A1
EP0424797A1 EP19900119950 EP90119950A EP0424797A1 EP 0424797 A1 EP0424797 A1 EP 0424797A1 EP 19900119950 EP19900119950 EP 19900119950 EP 90119950 A EP90119950 A EP 90119950A EP 0424797 A1 EP0424797 A1 EP 0424797A1
Authority
EP
European Patent Office
Prior art keywords
valve
bore
relief
outlet
recess
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
EP19900119950
Other languages
German (de)
English (en)
Other versions
EP0424797B1 (fr
Inventor
Andrew Enis Meyer
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.)
Rotary Power International Inc
Original Assignee
Rotary Power International Inc
John Deere Technologies International Inc
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 Rotary Power International Inc, John Deere Technologies International Inc filed Critical Rotary Power International Inc
Publication of EP0424797A1 publication Critical patent/EP0424797A1/fr
Application granted granted Critical
Publication of EP0424797B1 publication Critical patent/EP0424797B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/14—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel having cyclically-operated valves connecting injection nozzles to a source of fuel under pressure during the injection period
    • F02M69/147—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel having cyclically-operated valves connecting injection nozzles to a source of fuel under pressure during the injection period the valves being actuated mechanically, e.g. rotating
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
    • F02M63/0008—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using mechanically actuated valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86389—Programmer or timer
    • Y10T137/86405—Repeating cycle
    • Y10T137/86421—Variable
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86549—Selective reciprocation or rotation

Definitions

  • the invention relates to a control valve for the fuel injection in engines.
  • the object to be achieved by the invention is seen in a simple fuel injection system which can operate at high engine speeds and over which the injection quantity and the injection timing can be easily controlled.
  • control valve comprises a valve housing having a valve bore, an inlet passage connecting the valve bore to a fuel source, an outlet connecting the valve bore to a fuel injector, a relief passage communicating the valve bore with the outlet connects, a relief bore which connects the valve bore with a regulated source of relief fuel, and a valve spool which is rotatably and axially slidably received in the valve bore and an annular groove which is connected to the outlet, an outlet recess in its surface which in the annular groove opens, and has a relief recess which is mounted in the surface of the valve spool at a distance from the AustrittsausEnglishung, wherein the recesses are formed and arranged such that with each revolution of the valve spool, the valve spool a first set of rotation occupies positions in which the relief recess connects the relief channel to the relief bore and the connection of the inlet channel to the AustrittsausEnglishung is interrupted, and a second set of rotational positions in which
  • the expensive injection pump can be replaced by a cost-effective control valve that can be easily manufactured without the slightest tolerances.
  • the injection amount and the injection timing are determined by the recesses and the axial position of the valve spool.
  • the exit recess can taper in the axial direction seen from a wide end to a narrow end and the valve spool via a control rod to be axially adjustable.
  • the exit recess is pocket-shaped and approximately triangular.
  • valve spool is adjustable via the control rod against the action of a resilient member, he can easilyettiverstellen in its initial position when the control rod is retracted.
  • the relief recess can taper in the axial direction seen from a wide end to a narrow end, so that when an axial displacement of the spool and the amount of fuel from the outlet to the relief hole can be changed.
  • valve spool in a simple manner in and possibly revolving at the same speed as the engine can be driven, according to the invention further provided that for the circulation of the spool, a rotatable, extending in the valve housing drive shaft is provided with a threaded end portion which is slidably and rotatably received in an internally threaded bore in the valve spool.
  • valve spool can also be adjusted differently if it further forms with the one end of the valve bore a damper chamber and with the other end of the valve bore a pressure chamber which is connected via a pressure channel with a pressure source, wherein the valve spool is provided with a blind bore which is connected at one end to the damper chamber via a damper opening and at the other end to the pressure chamber.
  • the resilient member rotatably and slidably receive the drive shaft and abut one end against the valve housing and the other end against the threaded end portion.
  • control rod can be guided through the damper chamber and the drive shaft through the pressure chamber.
  • a fuel regulating control valve is indicated at 10. Its valve housing 12 is provided with a valve bore 14 extending axially in the housing. The latter communicates with a radially extending inlet passage 16 which is connected to a high pressure fuel source such as a fuel pump 18.
  • An outlet passage 20 connects the valve bore 14 to an outlet 22, which in turn communicates with a conventional fuel injector, not shown in the drawing.
  • In the outlet 22 opens one end of a discharge channel 24, the other end leads into the valve bore 14 at a location which has the distance to the mouth of the outlet channel 20.
  • a relief bore 26 connects the valve bore 14 to a conventional relief control valve, not shown, via which the fuel pressure in the relief bore is adjustable or limitable.
  • An adjustment or pressure channel 28 connects the valve bore 14 with a pressure regulating valve, also not shown, which serves to control the fuel pressure in the adjustment or pressure channel.
  • a valve slide 30 is arranged rotatably and axially displaceable. Its one end 32 forms with the end wall of the valve bore 14 a damper chamber 34, while its other end 36 defines an adjustment or pressure chamber 38 into which the pressure channel 28 opens. From Fig. 2 it can also be seen that the valve slide 30 has an axially extending bore 40 with a widened end portion 42, are screwed into the helical grooves 44 or the like and which is open to the pressure chamber 38. A damper opening 46 connects the other end of the bore 40 with the damper chamber 34, which is intended to dampen the axial vibrations of the valve spool.
  • annular groove 50 is incorporated, which is separated from the end 32 by a web portion 52 and is in communication with the outlet passage 20.
  • An outlet recess 54 is located in the periphery of the valve spool 30. It extends in the axial direction on the side remote from the web portion 52 and is approximately triangular in shape with a wide end 56 which is connected to the annular groove 50, and a narrow end 58th or a tip.
  • valve spool 30 has a relief recess 60 arranged at an axial distance from the outlet recess 54 and having a wide end 62 which tapers in the direction of the annular groove 50 to form a narrow end 64.
  • the relief recess 60 peripherally extends substantially more than half the circumference, while the outlet recess 54 is guided only by a quarter of the circumference.
  • the recesses 54 and 60 are dimensioned and oriented to each other so that they can alternately with the rotating valve spool 30 with the inlet channel 16 and the discharge hole 26 in conjunction, ie, whenever the inlet channel 16 is connected to the outlet recess 54, the compound of Relief bore 26 interrupted with the relief recess 60 and vice versa.
  • the outlet recess 54 limits the pressure in the outlet 22 when the relief recess 60 connects the relief bore 26 with the discharge channel 24.
  • the depth of the exit recess 54 may vary on the circumference of the valve spool 30, thereby providing a variable flow rate as opposed to pure on-off control.
  • a circumferential drive shaft 70 extends from the outside into the one end of the valve housing 12 through the pressure chamber 38 and is provided with a helical end portion 72 which is screwed into the end portion 42 of the bore 40 in the valve slide 30.
  • a control rod 76 is slidably received by the other end of the valve housing and abuts against the end 32 of the valve spool 30.
  • a helical spring 78 is still seated on the drive shaft 70 between the one end wall 80 of the valve housing 12 and the end portion 72, whereby acts on the valve spool, a force that wants to push it in the direction of the control rod 76.
  • the control valve 10 is actuated by the circulating in dependence on the engine speed drive shaft 70.
  • the speed of the drive shaft should correspond to that of the engine.
  • the drive can also be done with a different speed, if the number and size of the recesses 54 and 60 are adjusted accordingly.
  • the above-described control valve can also be used in a conventional diesel engine, if the speed of the drive shaft, the Ausappelungsab Wegen and the distance ratios are selected accordingly.
  • the valve slide 30 Via the revolving drive shaft 70, the valve slide 30 is set in rotation, so that at each rotation for a certain period of time during a partial rotation fuel at high pressure can pass through the outlet to the outlet 22.
  • the relief recess 60 connects the outlet 22 to the relief bore 26.
  • Additional control can be achieved by an adjustment of the control rod 76, for example when it is displaced to the right with reference to Figs.
  • the valve spool is also displaced to the right, whereby the inlet channel 16 to a wider part of the outlet recess 54 and the relief bore 26 to a narrower part the relief recess 60 impinges on each revolution of the valve spool 30. In this way, more fuel can reach the outlet 22 per revolution of the valve spool 30.
  • With an adjustment of the control rod 76 to the left of the spool 30 is also pressed by the spring 78 to the left, and less fuel passes per revolution to the outlet 22.
  • the injection start of the fuel to be injected into the engine be varied.
  • the pressure in the pressure chamber 38 passes through the clearance between the end portions 72 and 42 in a space 81 and in the damper chamber 34, whereby the end portion 72 is displaced with the drive shaft 70 to the outside against the action of the spring 78.
  • the valve spool 30 is rotated via the end portion 72 relative to the drive shaft 70, whereby the injection start of the fuel injection is advanced with respect to the engine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP19900119950 1989-10-23 1990-10-18 Soupape de commande pour l'injection de combustible Expired - Lifetime EP0424797B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US425080 1989-10-23
US07/425,080 US4967796A (en) 1989-10-23 1989-10-23 Fuel injection regulating valve

Publications (2)

Publication Number Publication Date
EP0424797A1 true EP0424797A1 (fr) 1991-05-02
EP0424797B1 EP0424797B1 (fr) 1993-03-03

Family

ID=23685060

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900119950 Expired - Lifetime EP0424797B1 (fr) 1989-10-23 1990-10-18 Soupape de commande pour l'injection de combustible

Country Status (6)

Country Link
US (1) US4967796A (fr)
EP (1) EP0424797B1 (fr)
JP (1) JPH03151563A (fr)
CA (1) CA2025222C (fr)
DE (1) DE59000970D1 (fr)
MX (1) MX172519B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5386851A (en) * 1993-06-28 1995-02-07 General Electric Company Two dimensional modulated burner staging valve
US5524822A (en) * 1995-03-13 1996-06-11 Simmons; Thomas R. Apparatus for producing variable-play fountain sprays
US6230983B1 (en) 2000-02-08 2001-05-15 Caterpillar Inc. Rotating valve member and fuel injector using same
WO2014128192A1 (fr) * 2013-02-20 2014-08-28 Norgren Ag Soupape de commande de carburant
US9267476B2 (en) 2014-01-21 2016-02-23 Cummins Inc. Two stage valve with conical seat for flow shut-off and spool knife edge for metering flow control
CN105545856B (zh) * 2016-02-17 2017-07-14 武汉市汉诺优电控有限责任公司 一种数控旋芯式比例伺服阀

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2385089A (en) * 1943-05-20 1945-09-18 Lerner Sanley Rotary metering valve for diesel engines
FR2353710A1 (fr) * 1976-06-03 1977-12-30 Ntn Toyo Bearing Co Ltd Dispositif d'injection de carburant pour moteurs a combustion interne

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1967851A (en) * 1931-02-12 1934-07-24 Bailey Meter Co Pilot valve
US2141428A (en) * 1937-01-14 1938-12-27 Henry E Carroll Diesel engine
US3894518A (en) * 1973-12-12 1975-07-15 Curtiss Wright Corp Stratified charge rotary engine with dual fuel injection
US3960115A (en) * 1974-10-04 1976-06-01 Curtiss-Wright Corporation Stratified charge rotary engine (method of operation)
US3991723A (en) * 1975-04-28 1976-11-16 Curtiss-Wright Corporation Fuel injection system for rotary internal combustion engine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2385089A (en) * 1943-05-20 1945-09-18 Lerner Sanley Rotary metering valve for diesel engines
FR2353710A1 (fr) * 1976-06-03 1977-12-30 Ntn Toyo Bearing Co Ltd Dispositif d'injection de carburant pour moteurs a combustion interne

Also Published As

Publication number Publication date
DE59000970D1 (de) 1993-04-08
JPH03151563A (ja) 1991-06-27
CA2025222C (fr) 1995-12-05
MX172519B (es) 1993-12-16
US4967796A (en) 1990-11-06
CA2025222A1 (fr) 1991-04-24
EP0424797B1 (fr) 1993-03-03

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