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DE4019808A1 - Four stroke IC engine for motor vehicle - uses ultrasonic measuring arrangement to ascertain composition of fuel mixt. of petrol and methanol - Google Patents

Four stroke IC engine for motor vehicle - uses ultrasonic measuring arrangement to ascertain composition of fuel mixt. of petrol and methanol

Info

Publication number
DE4019808A1
DE4019808A1 DE4019808A DE4019808A DE4019808A1 DE 4019808 A1 DE4019808 A1 DE 4019808A1 DE 4019808 A DE4019808 A DE 4019808A DE 4019808 A DE4019808 A DE 4019808A DE 4019808 A1 DE4019808 A1 DE 4019808A1
Authority
DE
Germany
Prior art keywords
fuel
composition
mixt
internal combustion
mixture
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
DE4019808A
Other languages
German (de)
Other versions
DE4019808C2 (en
Inventor
Dusan Prof Dr Ing Dr Gruden
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.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche AG
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 Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Priority to DE4019808A priority Critical patent/DE4019808A1/en
Publication of DE4019808A1 publication Critical patent/DE4019808A1/en
Application granted granted Critical
Publication of DE4019808C2 publication Critical patent/DE4019808C2/de
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P9/00—Electric spark ignition control, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/08—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
    • F02D19/082—Premixed fuels, i.e. emulsions or blends
    • F02D19/084—Blends of gasoline and alcohols, e.g. E85
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/08—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
    • F02D19/082—Premixed fuels, i.e. emulsions or blends
    • F02D19/085—Control based on the fuel type or composition
    • F02D19/087—Control based on the fuel type or composition with determination of densities, viscosities, composition, concentration or mixture ratios of fuels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
    • F02P17/02—Checking or adjusting ignition timing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
    • F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
    • F02P5/15—Digital data processing
    • F02P5/152—Digital data processing dependent on pinking
    • F02P5/1527—Digital data processing dependent on pinking with means allowing burning of two or more fuels, e.g. super or normal, premium or regular
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02—Analysing fluids
    • G01N29/032—Analysing fluids by measuring attenuation of acoustic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/26—Oils; Viscous liquids; Paints; Inks
    • G01N33/28—Oils, i.e. hydrocarbon liquids
    • G01N33/2835—Specific substances contained in the oils or fuels
    • G01N33/2852—Alcohol in fuels
    • 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
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/022—Liquids
    • G01N2291/0222—Binary liquids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/04—Wave modes and trajectories
    • G01N2291/045—External reflections, e.g. on reflectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/10—Number of transducers
    • G01N2291/102—Number of transducers one emitter, one receiver
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Pathology (AREA)
  • Analytical Chemistry (AREA)
  • Immunology (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Electrical Control Of Ignition Timing (AREA)

Abstract

The measuring arrangement converts the fuel mixt. into signals for regulating the ignition and mixt. preparations installations. The measuring arrangement comprises an ultrasonic transmitter (6) and receiver (7) installed at a distance from each other on a fuel mixt. measuring path (8). The measuring arrangement delivers signals concerning the composition of the fuel mixt. to a signal converter (11) that cooperates with a first control appts. (12) of the ignition system and a second control appts. (13) of the fuel mixt. preparation unit (3). The measuring path (8) is installed on a fuel tank (9). USE/ADVANTAGE - Flexible fuel i.c. engine with reduced emission of harmful gas.

Description

Die Erfindung bezieht sich auf eine Brennkraftmaschine nach dem Oberbegriff des Patentanspruchs 1.The invention relates to an internal combustion engine according to the preamble of claim 1.

Um Brennkraftmaschinen in Kraftfahrzeugen schadstoffemissionsärmer zu betreiben, ist es bekannt, sie mit einem Kraftstoffgemisch, z. B. aus Benzin und Methanol, zu versorgen. Die jeweilige Zusammensetzung dieses Kraftstoffgemischs erfordert jedoch eine entsprechende Einstellung von Zündanlage und Gemischaufbereitungsanlage der Brennkraftmaschinen.In order to reduce pollutant emissions to internal combustion engines in motor vehicles operate, it is known to use a fuel mixture, e.g. B. from gasoline and methanol. The respective composition of this However, the fuel mixture requires an appropriate setting of Ignition system and mixture processing system of internal combustion engines.

Es ist deshalb Aufgabe der Erfindung, eine hochwirksame Einrichtung für Brennkraftmaschinen zu schaffen, mit der die Zusammensetzung des Kraftstoffgemisches, beispielsweise bestehend aus Benzin und Methanol, gemessen und mit daraus gewonnenen Signalen die Zündanlage und die Gemischaufbereitungsanlage entsprechend eingestellt werden.It is therefore an object of the invention to provide a highly effective device for To create internal combustion engines with which the composition of the Fuel mixture, for example consisting of gasoline and methanol, measured and with the signals obtained from it the ignition system and the Mixture processing system can be set accordingly.

Erfindungsgemäß wird diese Aufgabe durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst. Weitere, die Erfindung ausgestaltende Merkmale sind in den Unteransprüchen enthalten.According to the invention, this object is achieved by the characterizing features of Claim 1 solved. Further features embodying the invention are contained in the subclaims.

Die mit der Erfindung hauptsächlich erzielten Vorteile sind darin zu sehen, daß mit der Schallmeßeinrichtung auf einfache, jedoch sichere Weise die jeweilige Zusammensetzung des Kraftstoffgemisches ermittelt wird, wobei mit den gewonnenen Signalen funktionsgerecht die Zündanlage und die Gemischaufbereitungsanlage eingestellt werden.The main advantages achieved with the invention are the following: that with the sound measuring device in a simple but safe way respective composition of the fuel mixture is determined, with the ignition signals and the signals obtained functionally Mixture processing system can be set.

In der Zeichnung, die eine schematisch dargestellte Brennkraftmaschine wiedergibt, ist ein Ausführungsbeispiel der Erfindung gezeigt, das nachstehend näher beschrieben ist.In the drawing, which is a schematically illustrated internal combustion engine reproduces an embodiment of the invention is shown, the is described in more detail below.

Eine Brennkraftmaschine 1 der Viertakt-Hubkolbenbauart, die beispielsweise vier in Reihe angeordnete Zylinder umfaßt, ist mit einer Zündanlage 2 und einer Gemischaufbereitungsanlage 3 versehen. Letztere ist an ein Kraftstoffversorgungssystem 4 angeschlossen. An internal combustion engine 1 of the four-stroke piston type, which comprises, for example, four cylinders arranged in series, is provided with an ignition system 2 and a mixture processing system 3 . The latter is connected to a fuel supply system 4 .

Die Brennkraftmaschine 1 wird mit einem Kraftstoffgemisch, z. B. aus Benzin und Methanol (flexible-fuel) betrieben, wobei die Zusammensetzung des Kraftstoffgemischs, insbesondere seine physikalische Eigenschaft; hier besonders die akustische, mittels einer Schallmeßeinrichtung 5 ermittelt wird. Die Schallmeßeinrichtung 5 wird gebildet durch einen Ultraschallsender 6 und einen Ultraschallempfänger 7, die mit Abstand zueinander an einer Kraftstoffgemisch-Meßstrecke 8, die durch einen Kraftstoffbehälter 9 dargestellt sein kann, angeordnet sind. Der Kraftstoffbehälter 9 ist entweder über eine Leitung 10 mit einem Haupt-Kraftstoffbehälter verbunden oder bildet selbst letzteren.The internal combustion engine 1 is mixed with a fuel mixture, e.g. B. operated from gasoline and methanol (flexible fuel), the composition of the fuel mixture, in particular its physical property; here in particular the acoustic one is determined by means of a sound measuring device 5 . The sound measuring device 5 is formed by an ultrasonic transmitter 6 and an ultrasonic receiver 7 , which are arranged at a distance from one another on a fuel mixture measuring section 8 , which can be represented by a fuel tank 9 . The fuel tank 9 is either connected to a main fuel tank via a line 10 or forms the latter itself.

Der Ultraschallsender 6 und der Ultraschallempfänger 7 senden ihre Signale über die Kraftstoffgemisch-Zusammensetzung an einen Signalwandler 11, der einerseits mit einem ersten Steuergerät 12 der Zündanlage 2 und andererseits mit einem zweiten Steuergerät 13 der Gemischaufbereitungsanlage 3 verbunden ist. Beide Steuergeräte können in einem Rechner vereinigt sein. Die Gemischaufbereitungsanlage 3 kann eine Einspritzvorrichtung oder auch ein Vergaser sein.The ultrasonic transmitter 6 and the ultrasonic receiver 7 send their signals via the fuel mixture composition to a signal converter 11 which is connected on the one hand to a first control unit 12 of the ignition system 2 and on the other hand to a second control unit 13 of the mixture preparation system 3 . Both control units can be combined in one computer. The mixture preparation system 3 can be an injection device or a carburetor.

Beim Betrieb der Brennkraftmaschine 1 wird die Zusammensetzung des Kraftstoffgemischs (= Anteile des Benzins und des Methanols) über den Ultraschallsender 6 und den Ultraschallempfänger 7 gemessen. Daraus werden Signale an den Signalwandler 11 gemeldet. Der Signalwandler 11 meldet Signale an das erste Steuergerät 12, das den Zündzeitpunkt beeinflußt und das zweite Steuergerät 13, das (bei einer Einspritzanlage) die Einspritzmenge und die Öffnungszeit einstellt (bei einem Vergaser wird der Querschnitt der Düse verändert).When the internal combustion engine 1 is operating, the composition of the fuel mixture (= proportions of the gasoline and the methanol) is measured via the ultrasonic transmitter 6 and the ultrasonic receiver 7 . From this, signals are reported to the signal converter 11 . The signal converter 11 reports signals to the first control unit 12 , which influences the ignition timing and the second control unit 13 , which (in the case of an injection system) sets the injection quantity and the opening time (in the case of a carburetor, the cross section of the nozzle is changed).

Claims (3)

1. Brennkraftmaschine der Viertakt-Hubkolbenbauart für Kraftfahrzeuge, die mit einem Kraftstoffgemisch, z. B. aus Benzin und Methanol, betrieben wird, wobei eine Einrichtung die Zusammensetzung des Kraftstoffgemischs in Signale umsetzt, mit denen eine Zündanlage und eine Gemischaufbereitungsanlage der Brennkraftmaschine beeinflußt werden, dadurch gekennzeichnet, daß die Einrichtung eine der Zündanlage (2) und der Gemischaufbereitungsanlage (3) vorgeschaltete Schallmeßeinrichtung (6, 7) ist.1. Internal combustion engine of the four-stroke reciprocating piston type for motor vehicles, which with a fuel mixture, for. B. is operated from gasoline and methanol, a device converts the composition of the fuel mixture into signals with which an ignition system and a mixture processing system of the internal combustion engine are influenced, characterized in that the device one of the ignition system ( 2 ) and the mixture processing system ( 3rd ) upstream sound measuring device ( 6 , 7 ). 2. Brennkraftmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Schallmeßeinrichtung einen Ultraschallsender (6) und einen Ultraschallempfänger (7) umfaßt, die beabstandet an einer Kraftstoffgemisch-Meßstrecke (8) angeordnet sind und Signale über die Zusammensetzung des Kraftstoffgemischs an einen Signalwandler (11) liefern, der mit einem ersten Steuergerät (12) der Zündanlage (2) und einem zweiten Steuergerät (13) der Gemischaufbereitungsanlage (3) zusammenarbeitet.2. Internal combustion engine according to claim 1, characterized in that the sound measuring device comprises an ultrasonic transmitter ( 6 ) and an ultrasonic receiver ( 7 ) which are spaced apart on a fuel mixture measuring section ( 8 ) and signals about the composition of the fuel mixture to a signal converter ( 11 ) which works with a first control unit ( 12 ) of the ignition system ( 2 ) and a second control unit ( 13 ) of the mixture preparation system ( 3 ). 3. Brennkraftmaschine nach Anspruch 2, dadurch gekennzeichnet, daß die Kraftstoffgemisch-Meßstrecke (8) an einem Kraftstoffbehälter (9) vorgesehen ist.3. Internal combustion engine according to claim 2, characterized in that the fuel mixture measuring section ( 8 ) is provided on a fuel tank ( 9 ).
DE4019808A 1990-06-21 1990-06-21 Four stroke IC engine for motor vehicle - uses ultrasonic measuring arrangement to ascertain composition of fuel mixt. of petrol and methanol Granted DE4019808A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4019808A DE4019808A1 (en) 1990-06-21 1990-06-21 Four stroke IC engine for motor vehicle - uses ultrasonic measuring arrangement to ascertain composition of fuel mixt. of petrol and methanol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4019808A DE4019808A1 (en) 1990-06-21 1990-06-21 Four stroke IC engine for motor vehicle - uses ultrasonic measuring arrangement to ascertain composition of fuel mixt. of petrol and methanol

Publications (2)

Publication Number Publication Date
DE4019808A1 true DE4019808A1 (en) 1992-01-09
DE4019808C2 DE4019808C2 (en) 1992-05-07

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4131626A1 (en) * 1991-09-23 1993-03-25 Kloeckner Humboldt Deutz Ag Fuel injection control for low emission IC engine - uses detected fuel ratio to control fuel injection into combustion space
US5537854A (en) * 1993-05-24 1996-07-23 Phillips; Scott Acoustic natural gas fuel sensor
CN111255578A (en) * 2020-02-27 2020-06-09 江苏大学 A device for engine dual-fuel blending and fuel consumption measurement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010045517A1 (en) * 2010-09-15 2012-03-15 Volkswagen Ag Method for detecting e.g. diesel in fuel delivery system of internal combustion engine, involves determining density of fuel in fuel delivery system of engine based on resonance frequency of quartz crystal

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2544444A1 (en) * 1975-10-04 1977-04-14 Daimler Benz Ag IC engine fuel metering system for different fuel types - has fuel volume regulated in response to electric resistance of fuel
DE3016323A1 (en) * 1979-05-10 1980-11-13 Danfoss As DEVICE FOR ACOUSTICALLY MEASURING THE DENSITY OF A LIQUID
DE3407844A1 (en) * 1983-03-03 1984-09-06 Institut Français du Pétrole, Rueil-Malmaison, Hauts-de-Seine METHOD AND DEVICE FOR DETERMINING THE COMPOSITION OF AN ALCOHOL FUEL MIXTURE, ADAPTED TO THE SELF-SETTING OF ENGINES FEEDED WITH COMBUSTION MIXTURES OF VARIABLE ALCOHOL CONTENT
JPS63289234A (en) * 1987-05-20 1988-11-25 Mitsubishi Motors Corp Internal combustion engine with variable compression ratio
DE3825131A1 (en) * 1988-07-23 1990-01-25 Schloemann Siemag Ag Arrangement for the measurement of the concentration of oil-water mixtures

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2544444A1 (en) * 1975-10-04 1977-04-14 Daimler Benz Ag IC engine fuel metering system for different fuel types - has fuel volume regulated in response to electric resistance of fuel
DE3016323A1 (en) * 1979-05-10 1980-11-13 Danfoss As DEVICE FOR ACOUSTICALLY MEASURING THE DENSITY OF A LIQUID
DE3407844A1 (en) * 1983-03-03 1984-09-06 Institut Français du Pétrole, Rueil-Malmaison, Hauts-de-Seine METHOD AND DEVICE FOR DETERMINING THE COMPOSITION OF AN ALCOHOL FUEL MIXTURE, ADAPTED TO THE SELF-SETTING OF ENGINES FEEDED WITH COMBUSTION MIXTURES OF VARIABLE ALCOHOL CONTENT
JPS63289234A (en) * 1987-05-20 1988-11-25 Mitsubishi Motors Corp Internal combustion engine with variable compression ratio
DE3825131A1 (en) * 1988-07-23 1990-01-25 Schloemann Siemag Ag Arrangement for the measurement of the concentration of oil-water mixtures

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4131626A1 (en) * 1991-09-23 1993-03-25 Kloeckner Humboldt Deutz Ag Fuel injection control for low emission IC engine - uses detected fuel ratio to control fuel injection into combustion space
US5537854A (en) * 1993-05-24 1996-07-23 Phillips; Scott Acoustic natural gas fuel sensor
CN111255578A (en) * 2020-02-27 2020-06-09 江苏大学 A device for engine dual-fuel blending and fuel consumption measurement

Also Published As

Publication number Publication date
DE4019808C2 (en) 1992-05-07

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