DE1807773A1 - Injection device for gasoline engines - Google Patents
Injection device for gasoline enginesInfo
- Publication number
- DE1807773A1 DE1807773A1 DE19681807773 DE1807773A DE1807773A1 DE 1807773 A1 DE1807773 A1 DE 1807773A1 DE 19681807773 DE19681807773 DE 19681807773 DE 1807773 A DE1807773 A DE 1807773A DE 1807773 A1 DE1807773 A1 DE 1807773A1
- Authority
- DE
- Germany
- Prior art keywords
- pressure
- controlled
- fuel
- contact
- centrifugal force
- 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.)
- Pending
Links
Classifications
-
- 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
- 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
- F02M69/16—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for metering continuous fuel flow to injectors or means for varying fuel pressure upstream of continuously or intermittently operated injectors
- F02M69/18—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for metering continuous fuel flow to injectors or means for varying fuel pressure upstream of continuously or intermittently operated injectors the means being metering valves throttling fuel passages to injectors or by-pass valves throttling overflow passages, the metering valves being actuated by a device responsive to the engine working parameters, e.g. engine load, speed, temperature or quantity of air
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Die Erfindung betrifft eine Einrichtung zur indirekten Kraftstoffeinspritzung für Ottoraotore, d. h. eine Einrichtung, bei der der f| Kraftstoff nicht unmittelbar mit hohem Druck in die Zylinder, sondern mit wesentlich geringerem Druck in das Saugrohr vor die Einlaßventile gespritzt wird. Mechanische Torrichtungen für die veränderliche Sumessung des Kraftstoffes sind wegen der hohen Präzisionsanforderungen verhältnismäßig aufwendig. Es sind daher Einspritzvorrichtungen mit elektromagnetisch steuerbaren Einspritzventilen bekannt, bei denen der Kraftstoff mit konstantem Druck eingespritztund die Kraftstoffmenge mit elektrischen Mitteln durch Veränderung der Ventilöffnungsdauer dosiert wird.The invention relates to a device for indirect fuel injection for Otto gates, d. H. an institution where the f | Fuel does not enter the cylinder directly at high pressure, but rather at a significantly lower pressure in the intake manifold the inlet valves is injected. Mechanical gate directions for the variable total measurement of the fuel are due relatively complex due to the high precision requirements. There are therefore injectors with electromagnetic controllable injection valves are known in which the fuel is injected at constant pressure and the fuel quantity is dosed by electrical means by changing the valve opening time.
Die vorliegende Erfindung strebt eine Verbilligung und eine er- ä The present invention seeks a reduction in price and a similar
höhte Betriebssicherheit einer derartigen Vorrichtung an, und sieht eine Dosierung mittels veränderlichen Einspritzdrucks bei Konstantbleiben der Ventilöffnungszeit vor. Mach der Erfindung soll ein Überdruckventil zur Drucksteuerung des vorgelagerten Kraftstoffs durch die Drosselklappenverstellung steuerbar sein.increased operational reliability of such a device, and provides for metering by means of variable injection pressure The valve opening time remains constant. Mach the invention is to provide a pressure relief valve for pressure control of the upstream Fuel can be controlled by the throttle valve adjustment.
Anhand eines Ausführungsbeispiels soll die Erfindung nachfolgend unter Bezugnahme auf die beigefügte Figur erläutert werden·On the basis of an exemplary embodiment, the invention is to be explained below with reference to the attached figure.
Der Kraftstoff wird aus dem Takt 1 über ein Filter 2 von einer Exzenterpumpe 3 angesaugt und mit einem variablen, den Motorbedingungen entsprechenden Druck von 2-15 a^ü in d-ie Zuleitungen 4 zu den Einspritzventilen 5 gepumpt. Der variable Druck wird imThe fuel is sucked from the bar 1 through a filter 2 of an eccentric pump 3 and pumped with a variable corresponding to the engine conditions pressure of 2-15 a ^ ü in d-ie leads 4 to the injectors. 5 The variable pressure is in
- 009832/0796- 009832/0796
Bereich von 2 - -12 atü durch ein verstellbares Überdruckventil 6 geregelt. Ein Exzenter '], der - wie durch die gestricnelte Linie angedeutet ist - mit der Drosselklappe 9 fest verbünde:', ist, gibt bei geschlossener Drosselklappe 9 dein Überdruckventil C die kleinste und bei geöffneter Drosselklappe 9 die größte Vorspannung. Der Druck beträgt bei Leerlauf 2 atü und bei maximaler Drehzahl 12 -itü. Zur weiteren Druckerhöhung während der Beschleunigungsseit des ,-Iraftfahrzeuges ist ein ilagnetabsperrventil IC vorgesehen, das.durch einen "bei Tollgasstellung des Gaspedals 11 geschlossenen Kontaktschalter 12 geschlossen werden kann. In diesem Falle wird der Strömungswiderstand in der Rücklauf leitung 13, 13'i erhönt. Der Druck steigt auf 15 atü an und wird duren das Überdruckventil 14 auf diesen tfert gehalten. Die elektrische Steuerung des Kagnetabsperrventils 10 v/ird weiter unten beschrieben werden.Range from 2 - -12 atmospheres regulated by an adjustable pressure relief valve 6. An eccentric '], which - as indicated by the dotted line - is firmly connected to the throttle valve 9:', is, when the throttle valve 9 is closed, your pressure relief valve C is the smallest and when the throttle valve 9 is open, the greatest bias. The pressure is 2 atmospheres when idling and 12 atmospheres at maximum speed. To further increase the pressure during the acceleration side of the vehicle, a solenoid shut-off valve IC is provided which can be closed by a contact switch 12 which is closed when the accelerator pedal 11 is in the full throttle position. In this case, the flow resistance in the return line 13, 13'i is increased. The pressure rises to 15 atm and is kept there by the pressure relief valve 14. The electrical control of the solenoid shut-off valve 10 will be described further below.
Drosselklappe 9 "an(i Exzenter 7 werden von Gaspedal 11 aus betätigt. Ein Impulsgeber 15 für die elektronische Steuerung der Einspritzventile 5 befindet sich im Zündverteiler l6 und läuft mit halber Motordrehsahl. Die Exzenterpumpe 3 fördert das Vierfache der benötigten Treibstoffmenge.Throttle valve 9 ″ on ( i eccentric 7 are actuated by gas pedal 11. A pulse generator 15 for the electronic control of the injection valves 5 is located in the ignition distributor 16 and runs at half the engine speed. The eccentric pump 3 delivers four times the amount of fuel required.
Der Impulsgeber 15 besteht aus einem im rechten, oberen ,Teil der Figur gesondert dargestellten Schleifringkörper 17 mit einem trapezförmigen Impulsnocken 17a. Der Impulsnocken 17a hat eine obere Breite, die bei der Leerlaufdrehzahl einen Stromimpuls von 2 msek an das entsprechende Einspritzventil 5 gibt. Bei zunehmender Drehzahl bis 3u maximalen Drehzahl hebt eine Fliehkraftvorrichtung 18 den Schleifringkörper I7 derart an, da3 der Impulsnocken 17a jeweils die wirksame Breite hat, die der Impulsseit von 2 msek entspricht. Bei einer Leerlaufdrehzahl von 1000 u/min, und einer Vollastdrehzahl von- 5000 u/min, muß somit die untere ITockenbreite 5 mal breiter sein als die obere ITockenbreite.The pulse generator 15 consists of one in the right, upper, part of the Figure separately shown slip ring body 17 with a trapezoidal Impulse cam 17a. The pulse cam 17a has an upper width that a current pulse of 2 msec at the idling speed to the corresponding injection valve 5 there. With increasing speed A centrifugal device 18 lifts up to 3u maximum speed the slip ring body I7 in such a way that the pulse cam 17a respectively has the effective width corresponding to the pulse side of 2 msec. At an idle speed of 1000 rpm, and one Full load speed of 5000 rpm, must therefore be the lower I-cam width 5 times wider than the upper I-cam width.
Die Stromzufuhr von der Batterie 20 an die Einspritzventile 5 erfolgt jeweils dann, wenn der Schleifkontakt 21 (der ständig'auf dem* stromleitenden Ring 17b schleift) über den Impulsnocken 17a mit dem Schleifkontakt 22 verbunden ist. Die - in Umlaufrichtung gesehen - vordere Kante des Impulsnockens 17a ist schräg ausgebildet, während die hintere Kante senkrecht, verläuft. Auf diese WeiseThe power supply from the battery 20 to the injection valves 5 takes place whenever the sliding contact 21 (which is constantly 'on the * conductive ring 17b grinds) over the pulse cam 17a the sliding contact 22 is connected. The - seen in the direction of rotation - The front edge of the impulse cam 17a is inclined, while the rear edge is perpendicular. In this way
0 098 32/07960 098 32/0796
BAD ORIGINALBATH ORIGINAL
wird - bei gleicher Einspritzdauer - die Öffnungsphase der Einapritzventile 5, wie es betriebsmäßig erwünscht ist, zeitlich vorverlegt.becomes - with the same injection duration - the opening phase of the injection valves 5, brought forward in time, as is operationally desired.
Die Stromversorgung für das Hagnetventil 10 wird ebenfalls über den Schleifringkörper 17 geführt. Bei kleinen Motordrehzahlen und voll durchgetretenem Gaspedal schleift das Kontaktstück 19 auf dem stroaleitenden Teil 17b des Schleifrings 17. Bei höheren Drehzahlen wird der Schleifringkörper 17 angehoben und der Stronfluß unterbrochen, da das Kontaktstück 19 jetzt auf den unteren stromlosen Teil 17c des Schleifringkörpers 17 schleift. Der Einspritzdruck kann dann nur noch maximal 12 atü betragen»The power supply for the solenoid valve 10 is also via the slip ring body 17 out. At low engine speeds and fully depressed accelerator, the contact piece 19 grinds on the Stroa-conducting part 17b of slip ring 17. At higher speeds the slip ring body 17 is raised and the flow of current is interrupted, since the contact piece 19 now grinds on the lower currentless part 17c of the slip ring body 17. The injection pressure can then only be a maximum of 12 atm "
9 69 6
Claims (4)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19681807773 DE1807773A1 (en) | 1968-11-08 | 1968-11-08 | Injection device for gasoline engines |
US874146A US3662721A (en) | 1968-11-08 | 1969-11-06 | Fuel injection device for internal combustion engines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19681807773 DE1807773A1 (en) | 1968-11-08 | 1968-11-08 | Injection device for gasoline engines |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1807773A1 true DE1807773A1 (en) | 1970-08-06 |
Family
ID=5712753
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19681807773 Pending DE1807773A1 (en) | 1968-11-08 | 1968-11-08 | Injection device for gasoline engines |
Country Status (2)
Country | Link |
---|---|
US (1) | US3662721A (en) |
DE (1) | DE1807773A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3122553A1 (en) * | 1980-06-11 | 1982-03-04 | Diesel Kiki Co. Ltd., Tokyo | Method and device for metering the fuel quantity in an internal combustion engine |
FR2689182A1 (en) * | 1992-03-26 | 1993-10-01 | Peugeot | Fuel supply circuit for motor vehicle engine - uses solenoid valve controlled by an engine operating parameter to divert fuel pump delivery at light load. |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2109516A6 (en) * | 1970-10-30 | 1972-05-26 | Brev Etudes Sibe | |
US4138972A (en) * | 1977-06-06 | 1979-02-13 | Wilson Ora E | Fuel injection means for internal combustion engines |
US4221192A (en) * | 1978-06-26 | 1980-09-09 | Cummins Engine Company, Inc. | Fuel injector and common rail fuel supply system |
US4520763A (en) * | 1981-09-25 | 1985-06-04 | Ergenics Inc. | Fuel injection system |
US4474158A (en) * | 1981-11-11 | 1984-10-02 | Lucas Industries Public Limited Company | Liquid fuel pumping apparatus |
JP5519415B2 (en) * | 2010-06-03 | 2014-06-11 | トヨタ自動車株式会社 | Pressure regulator |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US18195A (en) * | 1857-09-15 | Street-sweeping machine | ||
US1664615A (en) * | 1926-03-26 | 1928-04-03 | Louis O French | Fuel-injection system |
US1679159A (en) * | 1927-02-23 | 1928-07-31 | Louis O French | Circuit-control mechanism for internal-combustion engines |
US2136959A (en) * | 1934-10-26 | 1938-11-15 | Edward A Winfield | Fuel supply system |
US2310773A (en) * | 1939-01-27 | 1943-02-09 | Fuscaldo Ottavio | Electromagnetically controlled fuel injection |
US2410728A (en) * | 1940-02-28 | 1946-11-05 | Fuscaldo Ottavio | Internal-combustion engine |
US3105478A (en) * | 1959-11-16 | 1963-10-01 | Engineering Res & Applic Ltd | Apparatus for the controlling of the supply of fuel and air to internal combustion engines |
US3319613A (en) * | 1965-06-03 | 1967-05-16 | Electronic Specialty Co | Fuel injection system |
-
1968
- 1968-11-08 DE DE19681807773 patent/DE1807773A1/en active Pending
-
1969
- 1969-11-06 US US874146A patent/US3662721A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3122553A1 (en) * | 1980-06-11 | 1982-03-04 | Diesel Kiki Co. Ltd., Tokyo | Method and device for metering the fuel quantity in an internal combustion engine |
FR2689182A1 (en) * | 1992-03-26 | 1993-10-01 | Peugeot | Fuel supply circuit for motor vehicle engine - uses solenoid valve controlled by an engine operating parameter to divert fuel pump delivery at light load. |
Also Published As
Publication number | Publication date |
---|---|
US3662721A (en) | 1972-05-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE19906401C1 (en) | Exhaust gas recirculation system | |
DE2246373C2 (en) | ||
DE1451956A1 (en) | Fuel injection device for internal combustion engines | |
DE2243680A1 (en) | ELECTRONIC FUEL INJECTION CONTROL DEVICE | |
DE1807773A1 (en) | Injection device for gasoline engines | |
DE1125719B (en) | Injection system for internal combustion engines, in particular for motor vehicles | |
DE1426136B1 (en) | Control device for a fuel injection device in internal combustion engines | |
DE2912355C2 (en) | Mixture formation device for internal combustion engines with carburettors | |
DE1751618A1 (en) | Fuel metering valve | |
DE3147467C1 (en) | Injection system for internal combustion engines | |
DE2944318A1 (en) | FEEDING DEVICE FOR AN ADDITIONAL MATERIAL, IN PARTICULAR WATER, FOR AIR COMPRESSING INJECTION COMBUSTION ENGINES | |
DE2411513A1 (en) | Oil and fuel lubrication for combustion engines - oil-fuel mixture is matched to engine operating condition | |
DE3227805A1 (en) | ELECTRIC POTENTIOMETER | |
DE2639975A1 (en) | ELECTRONIC FUEL INJECTION CONTROL FOR COMBUSTION ENGINE | |
DE2058192C3 (en) | Control device on a fuel supply device intended for an internal combustion engine | |
DE1788063C3 (en) | Method and device for controlling the pulse duration of repetitive electrical square control pulses | |
DE1751733A1 (en) | Electronically controlled carburetor | |
DE2013472A1 (en) | Fuel injection system for internal combustion engines | |
DE2544791A1 (en) | AIR VOLUME MEASURING DEVICE | |
DE1800937B2 (en) | Ignition device for internal combustion engines operating with spark ignition | |
DE1601358A1 (en) | Fuel injection system for internal combustion engines | |
DE1601359A1 (en) | Fuel injection system for internal combustion engines | |
DE2249279A1 (en) | AIR FLOW METER FOR A FUEL INJECTION DEVICE | |
DE2431865A1 (en) | Fuel injector for spark-ignition combustion engine - with air quantity adapted to fuel quantity and introduced after delay | |
DE2360960A1 (en) | ELECTRONIC CONTROL DEVICE FOR ACHIEVING ADDITIONAL ACCELERATION INJECTION IN A COMBUSTION ENGINE WITH FUEL INJECTION |