EP0361199A2 - Système d'injection de combustible - Google Patents

Système d'injection de combustible Download PDF

Info

Publication number
EP0361199A2
EP0361199A2 EP89116828A EP89116828A EP0361199A2 EP 0361199 A2 EP0361199 A2 EP 0361199A2 EP 89116828 A EP89116828 A EP 89116828A EP 89116828 A EP89116828 A EP 89116828A EP 0361199 A2 EP0361199 A2 EP 0361199A2
Authority
EP
European Patent Office
Prior art keywords
distributor
metering
injection
fuel
line
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.)
Withdrawn
Application number
EP89116828A
Other languages
German (de)
English (en)
Other versions
EP0361199A3 (fr
Inventor
Hermann Dr. Reulein
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.)
Pierburg GmbH
Original Assignee
Pierburg GmbH
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 Pierburg GmbH filed Critical Pierburg GmbH
Publication of EP0361199A2 publication Critical patent/EP0361199A2/fr
Publication of EP0361199A3 publication Critical patent/EP0361199A3/fr
Withdrawn legal-status Critical Current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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/02—Fuel-injection apparatus characterised by being operated electrically specially for low-pressure fuel-injection
    • 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
    • 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
    • F02M69/145—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 electrically

Definitions

  • the invention relates to a fuel injection system for internal combustion engines according to the preamble of patent claim 1.
  • Fuel injection systems of this type are intended for internal combustion engines that are used in vehicles and are therefore subject to high requirements with regard to accurate and trouble-free fuel metering.
  • OS 17 51 128 discloses an electronically controlled injection device with a metering system consisting of a cylinder section and a free piston that divides the cylinder section into two chambers, one of which can be connected to the fuel supply system or return system into the tank via controllable channels and the other Chamber can be connected either via a throttle to the supply system or to the connection or distribution system with injectors. 3-way valves are provided as the control device.
  • This injector is not suitable for sequential and selective injection in multi-cylinder engines.
  • an injection device in which the fuel is metered by a free piston arranged in a cylinder section, which divides the cylinder section into two chambers, which can be connected via electrical valves either to the fuel metering system or to a distributor system with injection valves. It is controlled so that one chamber is connected to the fuel delivery system and the other to the distribution system.
  • This injector has the disadvantage that two intake valves and 4 distributor valves are to be provided for a 4-cylinder engine and that vapor bubbles can occur in the unflushed injection lines and the distributor flow, especially after longer idle phases, as a result of which the fuel injection can be interrupted by springback of the vapor bubbles.
  • the object of the invention is to develop a fuel injection system specified in the preamble of patent claim 1 in such a way that fewer components are required, sequential and selective injection can be achieved and there are no unflushed fuel lines or chambers.
  • Fig. 1 shows schematically a fuel injection system according to the invention, which is further described in structure and function.
  • the fuel passes from a fuel tank 1 via a fuel line 2 to a fuel pump 3 and via a filter 4 to a metering distributor unit 5.
  • the excess fuel is conveyed back to the fuel tank 1 via a return line 7.
  • a pressure control valve 6 and a throttle 8 are arranged in the course of the return line.
  • the throttle 8 can be replaced by another pressure-reducing element, for example a pressure control or differential pressure valve.
  • a metering valve 20 provided in the metering distributor unit doses the fuel provided by the fuel line 2, which, according to the ignition sequence of an internal combustion engine, in this case a 4-cylinder internal combustion engine, is fed from a rotating distributor 28 to the metering distributor unit 5 via distributor lines 10 and injection valves 13 in the cylinders associated air intake channels 14 is injected.
  • an internal combustion engine in this case a 4-cylinder internal combustion engine
  • the metering valve 20 is controlled via control lines 17 of an electronic control unit 15, which is connected via control lines 16 to the fuel pump 3 and via a control line 18 to a synchronous motor 21 which drives the distributor 28 synchronously with the camshaft of the internal combustion engine. Further connecting lines 19 are used for the supply of motor parameter and control signals which are processed into a control signal of the metering valve 20.
  • the return line 7 has a purge line connection 9 downstream of the pressure control valve 6, but upstream of the throttle 8, which opens into the metering distributor unit 5 and is connected to the distributor lines 10 via a distributor groove 29, 30, 33 of the distributor 28, shown in FIG. 2 for which there is no injection.
  • the injection valves 13 have return flush lines 11 which open into the metering distributor unit 5 and are connected to a return line 12 by a distributor groove 31, 32, 34 of the distributor 28 such that the non-injecting injection valves via the return flush lines 11 to the return line 12 and to the Fuel return line 7 are connected downstream of the throttle 8, which results in a purge flow.
  • the pressure rising by opening the metering valve 20 in the distributor chamber 26 propagates via the distributor line 10 to the injection valve 13.
  • the injection valve 13 shown in FIG. 5 or its valve closing body 36 loaded in the closing direction by a spring 39 opens and fuel is injected.
  • the injected fuel results from the pressure difference between the distributor chamber 26 and the air intake duct 14 and the opening cross section 37 of the injection valve 13. Since tolerances cannot be avoided during the manufacture of the injection valves, it is necessary for a good uniform distribution to match the valves with one another, e.g. . B. by adjusting the opening cross-section with the aid of an adjustable stop 38.
  • the injection process is interrupted since there is no subsequent delivery, and the valve closing body 36 closes by the spring 39 as soon as the opening pressure falls below the opening pressure.
  • the distribution of the injection quantity to the engine is speed-dependent, since the distributor 28 is driven by the synchronous motor 21 at the camshaft speed. A purely mechanical drive of the distributor from the internal combustion engine is also conceivable.
  • the load-dependent adaptation of the injection quantity takes place by means of a pulse length control of the metering valve 20.
  • the injectors 13 of the remaining three cylinders are purged.
  • the throttle 8 was selected so that the pressure after the pressure control valve 6 is below the opening pressure of the injection valves 13.
  • the fuel required for purging passes through the purging line connection 9 to the distributor groove 29, 30 and 33. This establishes the connection to the distributor lines 10 and the injection valves 13 of the cylinders (sectional view in FIG. 2).
  • the injection valves 13 are cooled and kept bubble-free, the purging fuel is returned to the distributor 28 via the return purging line 11.
  • Figure 6 shows how the system can be simplified by combining the manifold 10 and the backwash line 11 using double-walled hoses or pipes.
  • the number of connections on the metering distributor unit 5 is thereby reduced from 10 to 6, the hoses or pipes leading to the injection valves 13 being arranged offset by 90 ° in one plane. These are sealed on the metering distributor unit 5 with two 0-rings 40 and 41. On the other hand, it is sufficient to seal the injection valve with a 0-ring 41.
  • the connection to the injection valve is made at the highest point, so that gas bubbles are flushed out.
  • the distributor lines 10 and the return flush lines 11 can be formed directly as channels in the distributor unit 5, the common length of the distributor and the return flush line of each injector advantageously being of the same length for each injector should be. This measure brings about equal dead volumes in the lines between the metering valve and the injector, ie. H. Pressure losses and volume compression are the same for all lines, which means that there are little differences in distribution.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP89116828A 1988-09-29 1989-09-12 Système d'injection de combustible Withdrawn EP0361199A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883833011 DE3833011A1 (de) 1988-09-29 1988-09-29 Brennstoffeinspritzsystem
DE3833011 1988-09-29

Publications (2)

Publication Number Publication Date
EP0361199A2 true EP0361199A2 (fr) 1990-04-04
EP0361199A3 EP0361199A3 (fr) 1990-10-10

Family

ID=6363940

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89116828A Withdrawn EP0361199A3 (fr) 1988-09-29 1989-09-12 Système d'injection de combustible

Country Status (2)

Country Link
EP (1) EP0361199A3 (fr)
DE (1) DE3833011A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996013659A1 (fr) * 1994-10-31 1996-05-09 Wildenberg Adrianus Martinus M Systeme de dosage de carburant pour l'alimentation sequentielle en carburant des cylindres d'un moteur a combustion

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1243468A (fr) * 1959-08-31 1960-10-14 Perfectionnements apportés à des dispositifs d'injection de combustible comportantplusieurs injecteurs alimentés successivement à partir d'un même ensemble <<piston-cylindre>> d'une pompe alternative
CH434874A (de) * 1966-04-14 1967-04-30 Huber Robert Einspritzvorrichtung zum Einspritzen von Kraftstoff in das Saugrohr von fremdgezündeten Brennkraftmaschinen
FR2088701A5 (fr) * 1970-04-22 1972-01-07 Sopromi Soc Proc Modern Inject
JPS59165860A (ja) * 1983-03-11 1984-09-19 Toyota Motor Corp 内燃機関の燃料噴射弁
JPS6116259A (ja) * 1984-07-03 1986-01-24 Diesel Kiki Co Ltd 内燃機関用冷却式燃料噴射ノズル
DE3516253A1 (de) * 1985-05-03 1986-11-06 Gebrüder Sulzer AG, Winterthur Einrichtung zum betrieb einer kolbenbrennkraftmaschine mit einem brennstoff relativ hoher viskositaet

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1243468A (fr) * 1959-08-31 1960-10-14 Perfectionnements apportés à des dispositifs d'injection de combustible comportantplusieurs injecteurs alimentés successivement à partir d'un même ensemble <<piston-cylindre>> d'une pompe alternative
CH434874A (de) * 1966-04-14 1967-04-30 Huber Robert Einspritzvorrichtung zum Einspritzen von Kraftstoff in das Saugrohr von fremdgezündeten Brennkraftmaschinen
FR2088701A5 (fr) * 1970-04-22 1972-01-07 Sopromi Soc Proc Modern Inject
JPS59165860A (ja) * 1983-03-11 1984-09-19 Toyota Motor Corp 内燃機関の燃料噴射弁
JPS6116259A (ja) * 1984-07-03 1986-01-24 Diesel Kiki Co Ltd 内燃機関用冷却式燃料噴射ノズル
DE3516253A1 (de) * 1985-05-03 1986-11-06 Gebrüder Sulzer AG, Winterthur Einrichtung zum betrieb einer kolbenbrennkraftmaschine mit einem brennstoff relativ hoher viskositaet

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 163 (M-487)(2219) 11 Juni 1986, & JP-A-61 16259 (DIESEL KIKI K.K.) 24 Januar 1986, *
PATENT ABSTRACTS OF JAPAN vol. 9, no. 18 (M-353)(1741) 25 Januar 1985, & JP-A-59 165860 (TOYOTA JIDOSHA K.K.) 19 September 1984, *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996013659A1 (fr) * 1994-10-31 1996-05-09 Wildenberg Adrianus Martinus M Systeme de dosage de carburant pour l'alimentation sequentielle en carburant des cylindres d'un moteur a combustion
NL9401807A (nl) * 1994-10-31 1996-06-03 Adrianus Martinus M Wildenberg Brandstofdoseringssysteem voor het sequentieel toevoeren van brandstof aan de cilinders van een verbrandingsmotor.
AU694811B2 (en) * 1994-10-31 1998-07-30 Adrianus Martinus Maria Van Den Wildenberg Fuel metering system for sequentially feeding fuel to the cylinders of a combustion engine
US5924408A (en) * 1994-10-31 1999-07-20 Van Den Wildenberg; Adrianus Martinus Maria Fuel metering system for sequentially feeding fuel to the cylinders of a combustion engine

Also Published As

Publication number Publication date
DE3833011A1 (de) 1990-04-05
EP0361199A3 (fr) 1990-10-10

Similar Documents

Publication Publication Date Title
DE69600032T2 (de) Brennkraftmaschine geeignet zum selektiven Betrieb mit Benzin- oder Flüssiggaseinspritzung
DE2829057C2 (fr)
EP0389834B1 (fr) Arrangement des conduits d&#39;admission pour un moteur à combustion à plusieurs cylindres
DE69600267T2 (de) Brennkraftmaschine mit Methaneinspritzsystem
DE3436768A1 (de) Verfahren zur steuerung der kraftstoffeinspritzung bei brennkraftmaschinen und kraftstoffeinspritzsystem zur durchfuehrung des verfahrens
DE3224769A1 (de) Kraftstoffeinspritzeinrichtung fuer brennkraftmaschinen, insbesondere pumpeduese fuer dieselbrennkraftmaschinen
DE3001166A1 (de) Kraftstoffeinspritzanlage
WO2020064495A1 (fr) Système d&#39;injection d&#39;eau et procédé pour faire fonctionner un système d&#39;injection d&#39;eau
EP1277941A2 (fr) Procédé de fonctionnement d&#39;un moteur à combustion interne, en particulier à injection directe, programme informatique et dispositif de commande et/ou de réglage de ce moteur
EP0178487B1 (fr) Dispositif d&#39;injection de carburant pour moteurs à combustion interne
EP0760425A1 (fr) Dispositif d&#39;injection
DE3318236C2 (fr)
DE3001154A1 (de) Mit pumpeduese arbeitende kraftstoffeinspritzanlage
DE2856595A1 (de) Kraftstoff-steuerventil fuer mehrzylinder-dieselmotoren
EP0361199A2 (fr) Système d&#39;injection de combustible
DE19615739C2 (de) Motorbremse für eine mehrzylindrige Dieselbrennkraftmaschine
DE3707805A1 (de) Saugrohranordnung fuer mehrzylinder-brennkraftmaschinen mit kraftstoff-einspritzduesen
DE19516245A1 (de) Einspritzdüse
DE69227044T2 (de) Wasserzufuhr in einer brennkraftmaschine
DE102016219864A1 (de) Verfahren und Vorrichtung zur Einspritzung eines Kühlfluids in einen Motor
DE102015213894A1 (de) Verfahren zum Einbringen von Kraftstoff in einen Brennraum einer Brennkraftmaschine mit Saugrohreinspritzung und Direkteinspritzung
DE102008024571A1 (de) Abgasrückführvorrichtung für eine Verbrennungskraftmaschine
DE69001374T2 (de) Zufuhrvorrichtung fuer brennkraftmaschine.
DE3931391C1 (fr)
EP0342323A1 (fr) Système d&#39;injection du carburant

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

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

PUAF Information related to the publication of a search report (a3 document) modified or deleted

Free format text: ORIGINAL CODE: 0009199SEPU

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT

D17D Deferred search report published (deleted)
PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19910411