EP0736688B1 - Dispositif de détection de la phase de fonctionnement d'un moteur à allumage simultané par paires de cylindre, notamment pour véhicule automobile - Google Patents
Dispositif de détection de la phase de fonctionnement d'un moteur à allumage simultané par paires de cylindre, notamment pour véhicule automobile Download PDFInfo
- Publication number
- EP0736688B1 EP0736688B1 EP19960400705 EP96400705A EP0736688B1 EP 0736688 B1 EP0736688 B1 EP 0736688B1 EP 19960400705 EP19960400705 EP 19960400705 EP 96400705 A EP96400705 A EP 96400705A EP 0736688 B1 EP0736688 B1 EP 0736688B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- engine
- phase
- ignition
- cylinders
- detection
- 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.)
- Expired - Lifetime
Links
- 238000001514 detection method Methods 0.000 title claims description 21
- 238000004804 winding Methods 0.000 claims description 35
- 230000005693 optoelectronics Effects 0.000 claims description 8
- 238000007493 shaping process Methods 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
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
- F02P15/00—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits
- F02P15/08—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits having multiple-spark ignition, i.e. ignition occurring simultaneously at different places in one engine cylinder or in two or more separate engine cylinders
Definitions
- the present invention relates to a device for detection of the operating phase of a simultaneous ignition in pairs of cylinders, especially for motor vehicle.
- This device requires in addition to the sensor, a target associated with this tree and comprising one or more indentations.
- the general principle of this analysis is to cause two synchronous cylinders to ignite simultaneously mechanically, i.e. for example the cylinders n ° 1 and 4 and n ° 2 and 3 in the case of a four engine cylinders, and observe the electrical characteristics resulting from the pressure difference in the two corresponding combustion chambers at the time of the spark.
- the object of the invention is therefore to resolve these problems.
- the invention relates to a device for detecting the operating phase of a engine with simultaneous ignition by pairs of cylinders, in particular for a motor vehicle, in which candles associated with the cylinders of each pair, are connected to the ends of a secondary winding of a ignition coil with the primary winding connected to an engine operation control computer through a power stage, the computer receiving a signal representative of the operating phase of the motor, characterized in that one of the windings secondary associated with one of the pairs of cylinders is a mid-point winding, and in that it includes means for detecting and shaping the signal voltage present at this midpoint of the winding, for deliver the signal representative of the engine operating phase.
- Document EP-A-602 803 which discloses a device according to the preamble of claim 1, proposes to place a capacitive sensor facing the middle of the secondary coil to deduce a signal therefrom. whose polarity indicates the motor operating phase.
- a detection device is suitable for detect the operating phase of an ignition engine simultaneous in pairs of cylinders, especially for vehicles automobile.
- spark plugs associated with the corresponding cylinders of each pair are connected to the ends of a secondary winding an ignition coil, the primary winding of which is connected to a computer controlling the operation of the engine, through a power stage.
- the candles are designated by references B1 and B4 for example and correspond to candles associated with cylinders 1 and 4, for example in the case of a four-cylinder engine.
- One of the electrodes of these candles is connected to ground while the other electrodes thereof are connected to the corresponding ends of a secondary winding 1, of an ignition coil 2, the primary winding 3 is associated with supply means controlled by the operating control computer of the motor, and comprising for example a transistor NPN 4.
- the secondary winding 1 is a mid-point winding PM and the detection device according to the invention takes advantage of the fact that the voltage Vpm measured at the midpoint of the secondary winding of the coil, is alternately positive then negative depending on the operating phase of the motor.
- This device is particularly suitable for ignition systems with ignition coils including the primary and secondary windings are distributed over two separate magnetic cores.
- Vpm V1-V4 / 2
- the voltages V1 and V4 are respectively proportional to pressures P1 and P4 in the chambers of combustion of cylinders n ° 1 and 4 of the pair considered.
- This detection and this formatting can for example be carried out through an organ semiconductor with unidirectional conduction.
- the device detection system has a serial circuit connected between the midpoint PM of the secondary winding 1 of the coil 2 and the mass and comprising for example a resistor 5 and a Zener diode 6 which clips the voltage signal Vz when Vpm is positive and limits the negative voltage of Vz when Vpm is negative.
- Resistor 5 limits the current in the Zener diode.
- the signal Vz at the terminals of this Zener diode 6 is a formatted signal which has a voltage pulse for each ignition of the corresponding cylinder as can be seen in the figure 4.
- the midpoint PM of this secondary winding 1 of the ignition coil is connected to a series circuit comprising a resistor 7 and an opto-electronic coupler designated by the general reference 8.
- the opto-electronic coupler comprises by example in a conventional way a light-emitting diode 9 associated with a photo-transistor 10, while a diode 11 is connected to the terminals of this coupler to limit the reverse voltage across its terminals.
- Resistor 7 limits the current in this coupler and sets the detection sensitivity of this one.
- this signal can be directly used by the computer control of engine operation and more particularly by a microcontroller thereof.
- FIG. 7 An example of realization of a system of engine operation control is illustrated on the FIG. 7, in which a computer 12 has been shown engine operation control, receiving input, output of a crankshaft position sensor, designated by the general reference 13, this sensor being associated with a target 14, itself associated with the crankshaft and with indentations.
- this sensor 13 is connected to a microcontroller 15 of the computer, this microcontroller having outputs connected to a power stage 16 ignition coil control as it has was previously described.
- this power stage can be connected at one of the terminals of the primary winding 3 of the coil ignition 2 whose secondary winding 1 is connected to spark plugs for example B1 and B4 from a pair of cylinders associated with the engine.
- the midpoint of the secondary winding 1 of the ignition coil 2 is connected to a circuit similar to that shown in FIG. 5, that is to say comprising a resistor 7, an opto-electronic coupler 8 and a protection diode.
- the output of this opto-electronic coupler 8 is connected to the microcontroller 15 of the computer 12 through an entrance floor designated by general reference 17 on this figure.
- the acquisition of the motor operating phase by the micro-controller, from the signal delivered by the opto-electronic coupler, is done after a time delay determined from from the instant of ignition.
- This time delay can be programmable and is implemented in the microcontroller.
- this timer can be contained in memory of it and calibrated in function of the different characteristics of the system ignition.
- the signal Vi delivered by the opto-electronic coupler alternatively must be in logical state 1 then at logical state 0.
- each engine time can be assigned to the corresponding cylinder of the engine according to the ignition order.
- the engine is started by injection grouped.
- the microcontroller 15 then detects the position angle of the crankshaft by means of sensor 13 and determines so which coil should be ordered and to which instant ignition must be caused.
- engine control can then switch from grouped injection mode to sequential injection.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Description
- la Fig.1 représente un schéma synoptique illustrant un circuit de raccordement de bougies de cylindres associés dans une paire de cylindres d'un moteur à combustion interne et à allumage simultané notamment de véhicule automobile;
- la Fig.2 représente un exemple de signaux de tension en différents points du circuit représenté sur la figure 1 dans le cas où le cylindre n°1 est en phase de compression;
- la Fig.3 représente un premier mode de réalisation d'un dispositif de détection selon l'invention;
- la Fig.4 représente un exemple d'un signal représentatif de la phase de fonctionnement d'un moteur, issu du dispositif de détection représenté sur la figure 3;
- la Fig.5 représente un second exemple de réalisation d'un dispositif de détection selon l'invention;
- la Fig.6 représente des signaux obtenus en différents points du dispositif représenté sur la figure 5; et
- la Fig.7 représente un schéma synoptique illustrant la structure d'un système de contrôle du fonctionnement d'un moteur, comportant un dispositif de détection selon l'invention.
Claims (5)
- Dispositif de détection de la phase de fonctionnement d'un moteur à allumage simultané par paires de cylindres, notamment pour véhicule automobile, dans lequel des bougies (B1,B4) associées aux cylindres de chaque paire, sont raccordées aux extrémités d'un bobinage secondaire (1) d'une bobine d'allumage (2) dont le bobinage primaire (3) est raccordé à un calculateur (12) de contrôle du fonctionnement du moteur à travers un étage de puissance (16), le calculateur recevant un signal représentatif de la phase de fonctionnement du moteur, caractérisé en ce que l'un des bobinages secondaires associés à l'une des paires de cylindres est un bobinage à point milieu, et en ce qu'il comporte des moyens (5,6; 7,8,9,10,11) de détection et de mise en forme du signal de tension présente à ce point milieu (PM) du bobinage, pour délivrer au calculateur (12) le signal représentatif de la phase de fonctionnement du moteur.
- Dispositif selon la revendication 1, caractérisé en ce que les moyens de détection et de mise en forme comportent un circuit série connecté entre le point milieu et la masse et muni d'une résistance (5) et d'une diode Zener (6) aux bornes de laquelle est engendré le signal représentatif de la phase de fonctionnement du moteur.
- Dispositif selon la revendication 1, caractérisé en ce que les moyens de détection et de mise en forme comportent un circuit série muni d'une résistance (7) et d'un capteur opto-électronique (8) à la sortie duquel est délivré le signal représentatif de la phase de fonctionnement du moteur.
- Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les bobinages primaire (3) et secondaire (1) de la bobine bobinages primaire (3) et secondaire (1) de la bobine d'allumage (2) sont disposés sur des noyaux magnétiques distincts.
- Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le calculateur (12) est adapté pour acquérir l'information de phase sur le signal représentatif de la phase de fonctionnement du moteur, avec une temporisation déterminée à partir de l'instant d'allumage des bougies correspondantes.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9504051A FR2732723B1 (fr) | 1995-04-05 | 1995-04-05 | Dispositif de detection de la phase de fonctionnement d'un moteur a allumage simultane par paires de cylindres, notamment pour vehicule automobile |
FR9504051 | 1995-04-05 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0736688A2 EP0736688A2 (fr) | 1996-10-09 |
EP0736688A3 EP0736688A3 (fr) | 1996-10-16 |
EP0736688B1 true EP0736688B1 (fr) | 1999-06-23 |
Family
ID=9477786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19960400705 Expired - Lifetime EP0736688B1 (fr) | 1995-04-05 | 1996-04-01 | Dispositif de détection de la phase de fonctionnement d'un moteur à allumage simultané par paires de cylindre, notamment pour véhicule automobile |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0736688B1 (fr) |
DE (1) | DE69602986T2 (fr) |
ES (1) | ES2135854T3 (fr) |
FR (1) | FR2732723B1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111245427B (zh) * | 2020-01-14 | 2021-03-30 | 武汉大数据产业发展有限公司 | 一种大数据实时监控系统 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4018895C2 (de) * | 1990-06-13 | 1997-10-09 | Bosch Gmbh Robert | Diagnosevorrichtung |
DE4028554C2 (de) * | 1990-09-08 | 2000-02-17 | Bosch Gmbh Robert | Zündanlage einer Brennkraftmaschine mit einer Anordnung zur sekundärseitigen Zündsignalauskopplung |
US5493496A (en) * | 1992-12-15 | 1996-02-20 | Ford Motor Company | Cylinder number identification on a distributorless ignition system engine lacking CID |
US5410253A (en) * | 1993-04-08 | 1995-04-25 | Delco Electronics Corporation | Method of indicating combustion in an internal combustion engine |
-
1995
- 1995-04-05 FR FR9504051A patent/FR2732723B1/fr not_active Expired - Fee Related
-
1996
- 1996-04-01 DE DE1996602986 patent/DE69602986T2/de not_active Expired - Fee Related
- 1996-04-01 EP EP19960400705 patent/EP0736688B1/fr not_active Expired - Lifetime
- 1996-04-01 ES ES96400705T patent/ES2135854T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2732723A1 (fr) | 1996-10-11 |
EP0736688A2 (fr) | 1996-10-09 |
FR2732723B1 (fr) | 1997-06-20 |
EP0736688A3 (fr) | 1996-10-16 |
DE69602986T2 (de) | 1999-12-02 |
ES2135854T3 (es) | 1999-11-01 |
DE69602986D1 (de) | 1999-07-29 |
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