SE500329C2 - Device for reducing the risk of engine failure of a car engine - Google Patents

Device for reducing the risk of engine failure of a car engine

Info

Publication number
SE500329C2
SE500329C2 SE9001441A SE9001441A SE500329C2 SE 500329 C2 SE500329 C2 SE 500329C2 SE 9001441 A SE9001441 A SE 9001441A SE 9001441 A SE9001441 A SE 9001441A SE 500329 C2 SE500329 C2 SE 500329C2
Authority
SE
Sweden
Prior art keywords
engine
control unit
function
electric machine
signals
Prior art date
Application number
SE9001441A
Other languages
Swedish (sv)
Other versions
SE9001441D0 (en
SE9001441L (en
Inventor
Urban Kristiansson
Original Assignee
Volvo Ab
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 Volvo Ab filed Critical Volvo Ab
Priority to SE9001441A priority Critical patent/SE500329C2/en
Publication of SE9001441D0 publication Critical patent/SE9001441D0/en
Priority to PCT/SE1991/000273 priority patent/WO1991016532A1/en
Publication of SE9001441L publication Critical patent/SE9001441L/en
Publication of SE500329C2 publication Critical patent/SE500329C2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
    • B60R16/0236—Circuits relating to the driving or the functioning of the vehicle for economical driving
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K25/00—Auxiliary drives
    • 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
    • F02B75/06—Engines with means for equalising torque
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/04—Starting of engines by means of electric motors the motors being associated with current generators
    • 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
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/84—Data processing systems or methods, management, administration

Abstract

Device for reducing the risk of stalling in an internal combustion engine (1), which is coupled to an electrical machine (3) with both generator and motor functions. The machine is coupled to a control unit (4) disposed to receive signals, e.g. from the ignition and/or fuel injection system (8) of the engine, indicating imminent stalling. Upon receiving such signals, the control unit changes the function of the machine from generator to motor.

Description

15 20 25 30 35 1 - L, “Û 329 2 Genom exempelvis JP-62-150074 är en anordning av i inled- ningen angivet slag förut känd, vid vilken generatorns ladd- ningsfunktion kopplas ifrån, när varvtalet sjunker under tomgångsvarvtalet. Frånkopplingen är således enbart varvtals- styrd. En nackdel med denna anordning är att den ibland kopp- lar ur laddningsfunktion "i onödan", d.v.s. även vid litet varvtalsunderskridande vid låg motorbelastning. 15 20 25 30 35 1 - L, “Û 329 2 By means of, for example, JP-62-150074, a device of the type indicated in the introduction is previously known, in which the charging function of the generator is switched off when the speed drops below the idle speed. The disconnection is thus only speed-controlled. A disadvantage of this device is that it sometimes disconnects charging function "unnecessarily", i.e. even at low speeds under low engine load.

Syftet med föreliggande uppfinning är att vidareutveckla en anordning av i inledningen angivet slag, så att ovan angivna nackdel hos den kända anordningen elimineras.The object of the present invention is to further develop a device of the type stated in the introduction, so that the above-mentioned disadvantage of the known device is eliminated.

Detta uppnås enligt uppfinningen genom att styrenheten är elektriskt ansluten till motorns tändsystem och/eller in- sprutningssystem och är inrättad att vid mottagande av signa- ler från tändsystemet och/eller insprutningssystemet indike- rande viss tändförställning och/eller maximal insprutningstid under ett förutbestämt lägsta tillåtna varvtal minska eller helt koppla ifrån den elektriska maskinens generatorfunktion.This is achieved according to the invention in that the control unit is electrically connected to the engine ignition system and / or injection system and is arranged that upon receipt of signals from the ignition system and / or the injection system indicating a certain ignition setting and / or maximum injection time during a predetermined minimum allowable reduce speed or completely disconnect the generator function of the electrical machine.

I en föredragen vidareutveckling av anordningen enligt upp- finningen är den elektriska maskinen av en typ, som kan arbeta både som generator och som motor. Om tendens till motorstopp kvarstår efter frånkoppling av generatorfunktio- nen, kan maskinen medelst en reglerenhet med strömriktare inkopplas som motor och driva förbränningsmotorn för att "hjälpa" denna att övervinna aktuell belastning och därigenom undvika motorstopp.In a preferred further development of the device according to the invention, the electric machine is of a type which can work both as a generator and as a motor. If the tendency to stop the engine remains after switching off the generator function, the machine can be switched on as a motor by means of a control unit with a converter and drive the internal combustion engine to "help" it to overcome the current load and thereby avoid engine stop.

Uppfinningen beskrives närmare nedan under hänvisning till på bifogade ritning visade utföringsexempel, där figuren visar ett blockschema över en utföringsform av en anordning enligt uppfinningen.The invention is described in more detail below with reference to exemplary embodiments shown in the accompanying drawing, in which the figure shows a block diagram of an embodiment of a device according to the invention.

I figuren betecknar l en förbränningsmotor och 2 motorns vevaxel, till vilken en elektrisk maskin 3 är kopplad. I en föredragen utföringsform är maskinen 3 en asynkronmaskin, vars rotor (icke visad) är fast förbunden med vevaxeln 2, men även andra typer av elektriska maskiner kan utnyttjas. Förut- 10 15 20 25 3 5GB 529 sättningen är endast att de skall kunna arbeta både som motor och som generator. I stället för direktdrift från vevaxeln kan drivningen ske via någon lämplig transmission, t.ex. rem- eller kuggtransmission.In the figure, 1 denotes an internal combustion engine and 2 the crankshaft of the engine, to which an electric machine 3 is connected. In a preferred embodiment, the machine 3 is an asynchronous machine, whose rotor (not shown) is fixedly connected to the crankshaft 2, but other types of electrical machines can also be used. The only condition is that they must be able to work both as a motor and as a generator. Instead of direct drive from the crankshaft, the drive can take place via some suitable transmission, e.g. belt or gear transmission.

Maskinen 3 är via en generellt med 4 betecknad styrenhet ansluten till en ackumulator 5. Styrenheten 4 innefattar en strömriktare 6 samt reglerdon 7, t.ex. i form av en mikro- processor, och är elektriskt ansluten till motorns tänd- och/eller bränsleinsprutningssystem 8. Mikroprocessorn 7 är anordnad att styra strömriktaren 6 på sådant sätt, att den vid mottagande av signaler från systemen 8, som indikerar att motorn är på väg mot motorstopp, d.v.s. signaler indikerande minskning av tändförställningen och/eller förlängning av insprutningstiden mot maximum vid viss lågt varvtal, styr den elektriska maskinen att minska laddningseffekten och därmed belastningen på motorn. Om motorn vid helt frånkopplad gene- ratorfunktion bibehåller tendens att gå mot motorstopp växlar styrenheten 4 maskinens 3 funktion, så att den arbetar som motor för att driva förbränningsmotorn.The machine 3 is connected via a control unit generally denoted by 4 to an accumulator 5. The control unit 4 comprises a converter 6 and control device 7, e.g. in the form of a microprocessor, and is electrically connected to the engine ignition and / or fuel injection system 8. The microprocessor 7 is arranged to control the converter 6 in such a way that when receiving signals from the systems 8, which indicates that the engine is on road to engine stop, ie signals indicating a reduction of the ignition pitch and / or an extension of the injection time towards the maximum at a certain low speed, the electric machine controls to reduce the charging power and thus the load on the engine. If the engine maintains the tendency to go to engine stop when the generator function is completely switched off, the control unit 4 changes the function of the machine 3 so that it acts as an engine to drive the internal combustion engine.

Som komplement eller alternativ till signalerna från systemen 8 kan signaler från en vibrationsavkännare 9 utnyttjas. Vid mottagande av signaler med en viss frekvens understigande en förutbestämd låg frekvens och en viss amplitud överskridande en förutbestämd hög amplitud växlar styrenheten 4 maskinens 3 funktion från generatorfunktion till motorfunktion enligt det ovan angivna mönstret.As a complement or alternative to the signals from the systems 8, signals from a vibration sensor 9 can be used. When receiving signals with a certain frequency below a predetermined low frequency and a certain amplitude exceeding a predetermined high amplitude, the control unit 4 switches the function of the machine 3 from generator function to motor function according to the above pattern.

Claims (3)

10 15 20 25 50 (ïl (IL) CD Lf-J BD \__f) Patentkrav10 15 20 25 50 (ï1 (IL) CD Lf-J BD \ __ f) Patent claim 1. Anordning för att reducera risk för motorstopp hos en med en elektrisk maskin. som har åtminstone generatorfunktíon. drivbart förbunden förbränningsmotor, vid vilken den elektris- ka maskinen är ansluten till en styrenhet. vilken är inrättad att mottaga signaler indikerande tendens till motorstopp och vid mottagande av dylika signaler minska eller helt koppla ifrån generatorfunktionen för att minska den elektriska maski- nens belastning av förbränningsmotorn, k ä n n e t e c k - n a d av att styrenheten (4) är elektriskt ansluten till (8) och är inrättad att vid mottagande av signaler från tändsystemet och/eller insprutningssystemet indikerande viss tändförställ- ning och/eller maximal insprutningstid under ett förutbestämt lägsta tillåtna varvtal minska eller helt koppla ifrån den elektriska maskinens (3) generatorfunktíon. motorns tändsvstem och/eller insprutningssystemDevice for reducing the risk of engine stalling with an electric machine. which has at least a generator function. drivably connected internal combustion engine, to which the electric machine is connected to a control unit. which is arranged to receive signals indicating a tendency to stop the engine and when receiving such signals reduce or completely disconnect the generator function to reduce the load of the electric machine on the internal combustion engine, characterized in that the control unit (4) is electrically connected to ( 8) and is designed to reduce or completely disconnect the generator function of the electrical machine (3) when receiving signals from the ignition system and / or the injection system indicating a certain ignition and / or maximum injection time during a predetermined minimum permitted speed. engine ignition system and / or injection system 2. Anordning enligt krav 1. k ä n n e t e c k n a d av att styrenheten (4) är elektriskt ansluten till en med förbrän- ningsmotorn (1) förbunden vibrationsavkännare (9) och är in- rättad att vid mottagande av signaler från avkännaren indike- rande vibrationer med en frekvens och amplitud underskridande en förutbestämd frekvens resp. överskridande en förutbestämd amplitud minska eller helt koppla ifrån den elektriska maski- nens (3) generatorfunktíon.Device according to Claim 1, characterized in that the control unit (4) is electrically connected to a vibration sensor (9) connected to the combustion engine (1) and is arranged to vibrate with vibrating indicators when receiving signals from the sensor. a frequency and amplitude below a predetermined frequency resp. exceeding a predetermined amplitude reduce or completely disconnect the generator function of the electrical machine (3). 3. Anordning enligt krav 1 eller 2, k ä n n e t e c k n a d av att den elektriska maskinen (1) har både generatorfunktion och motorfunktion och att i styrenheten (4) ingår en strömrik- tare (6), vilken är anordnad att växla den elektriska maski- nens funktion mellan full generatorfunktion och full motor- funktion i beroende av nämnda signaler.Device according to Claim 1 or 2, characterized in that the electric machine (1) has both a generator function and a motor function and in that the control unit (4) comprises a converter (6), which is arranged to switch the electric machine. function between full generator function and full motor function depending on the said signals.
SE9001441A 1990-04-23 1990-04-23 Device for reducing the risk of engine failure of a car engine SE500329C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE9001441A SE500329C2 (en) 1990-04-23 1990-04-23 Device for reducing the risk of engine failure of a car engine
PCT/SE1991/000273 WO1991016532A1 (en) 1990-04-23 1991-04-17 Device for reducing the risk of stalling in an automobile engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9001441A SE500329C2 (en) 1990-04-23 1990-04-23 Device for reducing the risk of engine failure of a car engine

Publications (3)

Publication Number Publication Date
SE9001441D0 SE9001441D0 (en) 1990-04-23
SE9001441L SE9001441L (en) 1991-10-24
SE500329C2 true SE500329C2 (en) 1994-06-06

Family

ID=20379252

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9001441A SE500329C2 (en) 1990-04-23 1990-04-23 Device for reducing the risk of engine failure of a car engine

Country Status (2)

Country Link
SE (1) SE500329C2 (en)
WO (1) WO1991016532A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3308050B2 (en) * 1993-07-19 2002-07-29 株式会社デンソー Internal combustion engine torque control device
DE19839315A1 (en) * 1998-08-28 2000-03-09 Isad Electronic Sys Gmbh & Co Drive system for a motor vehicle and method for operating a drive system
FR2784714B1 (en) * 1998-10-16 2005-07-15 Renault METHOD FOR CONTROLLING A DIRECT GASOLINE INJECTION ENGINE EQUIPPED WITH AN INTEGRITY INTEGRATED INVERT STARTER ALTERNATOR
DE10064188A1 (en) * 2000-12-22 2002-07-11 Magnet Motor Gmbh Method for operating a non-railbound land motor vehicle with an internal combustion engine-generator unit and drive electric motor, and such a motor vehicle

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4699097A (en) * 1984-08-31 1987-10-13 Mazda Motor Corporation Means for suppressing engine output torque fluctuations
JPS639641A (en) * 1986-06-27 1988-01-16 Hitachi Ltd Load torque controller for internal combustion engine

Also Published As

Publication number Publication date
SE9001441D0 (en) 1990-04-23
WO1991016532A1 (en) 1991-10-31
SE9001441L (en) 1991-10-24

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