CN102099564A - Device for checking the cylinder assignment of an internal combustion engine - Google Patents
Device for checking the cylinder assignment of an internal combustion engine Download PDFInfo
- Publication number
- CN102099564A CN102099564A CN2009801280420A CN200980128042A CN102099564A CN 102099564 A CN102099564 A CN 102099564A CN 2009801280420 A CN2009801280420 A CN 2009801280420A CN 200980128042 A CN200980128042 A CN 200980128042A CN 102099564 A CN102099564 A CN 102099564A
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- Prior art keywords
- voltage divider
- capacitor
- connection
- voltage
- divider capacitor
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- 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.)
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Classifications
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- 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
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- 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
- F02D41/009—Electrical control of supply of combustible mixture or its constituents using means for generating position or synchronisation signals
- F02D2041/0092—Synchronisation of the cylinders at engine start
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2250/00—Engine control related to specific problems or objectives
- F02D2250/14—Timing of measurement, e.g. synchronisation of measurements to the engine cycle
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- 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
- F02D41/009—Electrical control of supply of combustible mixture or its constituents using means for generating position or synchronisation signals
-
- 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
-
- 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
- F02P2017/006—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines using a capacitive sensor
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- 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)
Abstract
The invention relates to a device for detecting a cylinder assignment of an internal combustion engine, comprising a tap (2) for detecting an electric field of a secondary winding of a double spark coil, and a voltage divider capacitor (4), wherein the voltage divider capacitor (4) distributes an electric charge induced at the tap (2) to a ground potential, such that a lower capacitor voltage cut off for the cylinder assignment is generated at the voltage divider capacitor (4), wherein the ground potential is connected to an engine ground potential (5).
Description
Technical field
The present invention relates to a kind of by the claim 1 cylinder assigned unit that is used to detect internal-combustion engine as described in the preamble.
Background technique
Being used for the prior art that spark coil especially 2 * 2 spark coils carries out signal analysis is intercepting scheme aspect the diversified electric capacity of realizing on so two rhythmeurs.For two rhythmeurs, two ends of secondary windings are connected with a spark plug respectively.After disconnecting the charging current of primary side, the voltage on two spark plugs almost rises symmetrically with respect to zero line, and one of them voltage rises towards positive voltage, and another voltage then rises towards negative voltage.The spark plug that is arranged in the cylinder that is in exhaust stroke has the little breakdown voltage of spark plug that is in compression stroke than another owing to littler chamber pressure.Puncture iff first spark plug, the voltage on this spark plug just is reduced to only 900...1000V from about 8...20kV so, and this causes the combined potential of secondary windings to move several kV.
But for known such as illustrated method in DE 40 28 545 A1, very difficult and the part can't implement be, realize that by means of the signal of deriving cylinder distributes, because the secondary signal of decoupling zero also is subjected to the influence of the primary circuit of spark coil.
Summary of the invention
With respect to this, has such advantage by the device with the described feature of claim 1 of the present invention, promptly can intactly detect potential displacement and output signal on the winding of two rhythmeurs, the compressed cylinder of this signal indication and identical with in the past phase signal sensor aspect its electric properties can realize in motor that thus the cylinder that was in the past provided by the phase signal sensor distributes.By means of by of the present invention be used for distributing the device that detects to provide to the cylinder of internal-combustion engine can be easily and the signal of surveying reliably at controller, because earth potential is connected on the motor earth potential, distribute the electric charge of being responded at this by means of voltage divider capacitor described earth potential tomorrow, avoid the surface that struts thus.Spark plug thus especially the earth potential of cylinder head be connected on the earth potential, this earth potential is called the motor earth potential.
Dependent claims shows preferred improvement project of the present invention.
Preferably include first resistance that is connected between described tapping plate and the voltage divider capacitor especially by device of the present invention.Thus vibration is cushioned.
In addition, scheme or replacement scheme as a supplement, preferably include first hysteresis comparator (Hysterekomparator) by device of the present invention, this first hysteresis comparator receives the condenser voltage that is intercepted or the signal that comes out and send its output signal to status register of therefrom deriving.Between the hysteresis comparator of described preferably scmitt trigger circuit and described status register preferred arrangements holding member.
Further preferably by the inventive system comprises second hysteresis comparator, this second hysteresis comparator is measured the downside voltage (Low-Side-Spannung) of described pair of rhythmeur or the signal that comes out and import the windowization (Fensterung) of the condenser voltage that is intercepted or the windowization of the signal that comes out of therefrom deriving when surpassing predetermined numerical value of therefrom deriving, and method is to discharge described status register.Especially discharge described status register for the predetermined time.Can regulate this time at this, method is the length that the output signal of second hysteresis comparator of scmitt trigger circuit is equally preferably extended to appointment by timing element such as monostable flipflop.Discharge described status register at this, method is used to implement described windowization such as being the output signal that loads the time that extends to appointment in case of necessity of described second hysteresis comparator to the input end of clock (such as to the trailing edge sensitivity) of the d type flip flop that is used as status register.The output signal of first hysteresis comparator that then will be in case of necessity transmits by holding member sends the data input pin of described d type flip flop to.
By this by design proposal of the present invention, can by filtering and windowization detect reliably described with the capacitive way intercepting signal and can from signal distributions, distribute clearly, which cylinder just is in the compression stroke.Especially be in this advantage, the scene exists to the window information necessary and can make interfering vibration diminuendo of following described signal, thus in controller, needn't reserve the incoming line that is used for the phase detector signal that any other electronic equipment and can using often existed there and with the state of being discerned be kept at this way of status register (trigger) allow to improve the trouble detection level (after 720 ° of KW boundless along conversion-＞necessarily have a fault).
As an alternative scheme or further preferably by the inventive system comprises analysis circuit, be connected described voltage divider capacitor the tapping plate side first joint and lead to second resistance between first joint of first lead of described analysis circuit and be connected described voltage divider capacitor motor earth potential side second joint and lead to the 3rd resistance between first joint of second lead of described analysis circuit, wherein, described first lead and second lead preferably twist together each other.Limit the electric current of high frequency by the decoupling zero resistance on such two joints that are located at described voltage divider capacitor (basic point capacitor).By the stranded lead that leads to controller guarantee at the input robustness and avoid radiation.
Further preferably comprise second joint that is connected second lead that is connected with second joint of the motor earth potential side of described voltage divider capacitor and the 4th resistance between the earth potential and the 5th resistance that is made of at least one single resistance by device of the present invention in described analysis circuit, described the 5th resistance is connected between second joint and described earth potential of first lead that is connected with first joint of the tapping plate side of described voltage divider capacitor.These resistance are to carry out the terminal that the lead coupling forms described first and second leads.
Scheme or additional project as an alternative, in described analysis circuit, comprise first voltage divider and/or second voltage divider by device of the present invention, second joint of first lead that first joint of the tapping plate side of wherein said and voltage divider capacitor is connected is connected on described first voltage divider, and second joint of second lead that is connected of second joint of the motor earth potential side of described and voltage divider capacitor is connected on described second voltage divider.Such distribution by input voltage has guaranteed the robustness with respect to variation (Spannungsversatz).
Further scheme preferably or as a supplement, comprise differential element by device of the present invention in described analysis circuit, this differential element forms the difference between the current potential of second joint of second lead that second joint of the motor earth potential side of first lead that first joint of the tapping plate side of described and voltage divider capacitor is connected and described and voltage divider capacitor is connected.Also guarantee robustness by this measure with respect to variation.
Scheme or replacement scheme as a supplement in addition, in described analysis circuit, comprise low-pass filter by device of the present invention, difference between the current potential of second joint of second lead that second joint of the motor earth potential side of first lead that this low-pass filter is connected to first joint of the tapping plate side of described and voltage divider capacitor and described and voltage divider capacitor is connected is carried out filtering, and perhaps the current potential of second joint of second lead that is connected of second joint of the motor earth potential side of the current potential of second joint of first lead that first joint of the tapping plate side of described and voltage divider capacitor is connected and/or described and voltage divider capacitor carries out filtering.Scheme can be used other suitable filters as an alternative, is used for signal differential or signal that each is single are carried out filtering to carry out further signal processing.
At last, further scheme preferably or as an alternative, in described analysis circuit, comprise at least one diode-capacitor bank by device of the present invention, this diode-capacitor bank receives, peak value is corrected the difference of especially passing through filtering of current potential of second joint of second lead that second joint of the motor earth potential side of first lead that is connected with first joint of the tapping plate side of preserving described and voltage divider capacitor and described and voltage divider capacitor is connected, perhaps reception, peak value is corrected the current potential that especially passes through filtering of second joint of second lead that second joint of the motor earth potential side of the current potential that especially passes through filtering of second joint of first lead that is connected with first joint of the tapping plate side of preserving described and voltage divider capacitor and/or described and voltage divider capacitor is connected.
Obtain a kind of analytical plan of striding assembly thus, this analytical plan by the intercept point of electric capacity, be located at passive part circuit in the spark coil, lead to the lead of controller and the incoming line that is located in the controller is formed, wherein possible analysis is microcontroller, if comparative result is such as being connected with the port of microcontroller and reading in by means of software.
In a kind of other deformation program, also handled signal can be imported to such as analog to digital-transducer fast (FADC) of μ Cs go up and by means of the signal processing of numeral and such as filtering, integration, threshold ratio, windowization and similar operations handle.
By the present invention, obtain following advantage in addition, that is to say and just to realize clear and definite distribution between crank position and the camshaft location to obtain phase information than the low cost of the combination that constitutes by phase detector and sensor wheel that wherein only a few passive member is integrated in the spark coil and the cost of in controller preparative like this being analyzed these ways is lower than electronic equipment integral body is integrated into this way in the spark coil.Can realize this point at this, because the joint on the motor earth potential of being connected to of described voltage divider capacitor (basic point capacitor) is led back the Balanced Current of the critical high frequency of EMV technology and given coil and reduce interference emission by spark plug like this on the shortest possible path.In addition, have very high anti-interference and very low interference emission by the stranded lead of preferred setting of the present invention and the analysis carried out can be complementary with the microprocessor in different generations neatly in controller.
Description of drawings
With reference to the accompanying drawings embodiments of the invention are elaborated.Wherein:
Fig. 1 is that the secondary voltage distribution reaches the rough structure by device of the present invention,
Fig. 2 is that the voltage on the tapping plate distributes,
Fig. 3 is preferred first embodiment by device of the present invention,
Fig. 4 is preferred second embodiment by device of the present invention,
Fig. 5 is preferred the 3rd embodiment by device of the present invention, and
Fig. 6 is preferred the 4th embodiment by device of the present invention.
Embodiment
Preferred embodiment be elaborated to of the present invention with reference to the accompanying drawings.
The secondary voltage that shows two spark plugs 16 and 17 on the left side of Fig. 1 distributes, and wherein, first spark plug 16 is arranged in the unpressed cylinder and second spark plug 17 is arranged in the compressed cylinder.Above curve A curve B and the secondary voltage second spark plug 17 on corresponding and following with the secondary voltage on first spark plug 16 corresponding.See to draw that two kinds of voltages (in the ideal case) rise about zero line symmetrically up on one of described two spark plugs being first spark plug 16 on the not compressed cylinder punctures and voltage there has about 1kV constant level separation voltage just here when described two spark plugs form ignition voltage.
The potential jump that occurs secondary windings 1 thus, described potential jump causes equilibrium process at the basic point capacitors 4 of 5 connections from tapping plate 2 towards earth potential.If second spark plug 17 also punctures subsequently, that reversal procedures just occurs, and the vibration that obtains cushioning appears under the excitation of this reversal procedures, thereby on basic point capacitor 4, produce signal distributions shown in Figure 2, the signal that is in for this signal distributions on the zero-bit at first acutely descends, upset then and have the shape of the pure oscillation of decay immediately.
Fig. 1 the right show be arranged in the spark coil the inside or above the theory structure of part circuit.Settled the plate 2 that conductive capability is arranged with respect to the secondary windings of two rhythmeurs 1, on this plate 2, gone out electric charge by electric field induction.These electric charges are connected with basic point capacitor 4 by resistance 3, and described basic point capacitor 4 is connected with the motor earth potential 5 of internal-combustion engine on its another end again, that is to say that the current potential that is also had on its earth potential end with spark plug is connected.The electric capacity of selecting this capacitor like this, the feasible voltage that occurs in the above may be in several volts but not be the scope interior (as above the secondary windings) of kilovolt.
On the connected node between described resistance 3 and the basic point capacitor 4, be provided with the first signal intercept point 15.Secondary signal intercept point 18 is arranged on the connected node between described basic point capacitor 4 and the motor earth potential 5.
Fig. 3 shows a kind of preferred first embodiment of basis by the signal analysis device of basic principle work of the present invention.In this embodiment, being used for the signal that cylinder distributes intercepts on the first signal intercept point 15 that is between first resistance 3 and the voltage divider capacitor 4.So adjust elementary charge in the basic point capacitor 4 by voltage divider 6, make voltage be in the center of the input voltage range of ensuing first hysteresis comparator 7, described first hysteresis comparator 7 is such as being configured to scmitt trigger circuit.Voltage divider 6 comprises two resistance here, in these two resistance one of them be connected between described basic point capacitor 4 and the earth potential and another be connected described basic point capacitor and 4 and power supply voltage VDD5 between.Between the described voltage divider 6 and first hysteresis comparator 7, can also connect wave filter 6a for further cushioning, this wave filter 6a is made of low-pass filter in shown embodiment, and this low-pass filter constitutes by means of resistance and capacitor.For the further output signal s7 to first hysteresis comparator 7 handles, carry out windowization (Fensterung), cause when the voltage on the described windowization elementary winding joint below surpasses the specific numerical value of the power supply voltage of the elementary winding on the KL.1 or when surpassing fixing threshold value will described first hysteresis comparator within the time at window output signal s7 to status register 12 releases.When disconnecting, the power switch of voltage in controller SG on the following elementary winding joint surpass the power supply voltage on the KL.1 after charging process.
In order to produce the signal of the described windowization of starting, connected the voltage divider of forming by two resistance 9 between the elementary winding joint below described, on the connected node of this voltage divider 9, intercepted signal s9, this signal s9 is imported in second hysteresis comparator 10.The output signal s10 of described second hysteresis comparator 10 is converted to window signal S11 by monostable flipflop 11, this window signal S11 is loaded on the input end of clock CLK as the d type flip flop of status register 12.
Because the output signal s7 with described first hysteresis comparator 7 is received in the status register along with the trailing edge of described window signal s11, but intercept signal s7 by analysis may decay, so preferred suggestion also will be such as being inserted into by the holding member (Hold-Glied) 8 that diode and capacitor are formed between described first hysteresis comparator 7 and the status register 12.As holding member 8, also can use monostable flipflop.Trigger small-sized signal output stage 14 by described status register 12 by driving stage 13, described small-sized signal output stage 14 is exported to described controller SG here with desired " phase detector signal " output.
In the scheme that goes out shown here, by power supply line from controller SG to the analytical electron device provisioning such as 5V voltage.Also it is contemplated that to be provided with and carry out voltage the voltage from KL.1 and supply this replacement scheme by means of integrated voltage regulator.
According to second embodiment illustrated in fig. 4, be provided with second resistance 20, this second resistance 20 is connected first joint, the first signal intercept point 15 and leading between first joint of first lead 22 of analysis circuit just of the tapping plate side of described voltage divider capacitor 4, and be provided with the 3rd resistance 21, second joint that the 3rd resistance 21 is connected the motor earth potential side of described voltage divider capacitor 4 that is to say secondary signal intercept point 18 and leads between first joint of second lead 23 of described analysis circuit, wherein, described first lead 22 and second lead 23 are stranded each other, that is to say that they form " twisted-pair feeder (Twisted-Pair) ".Be provided with in described analysis circuit that the 4th resistance 24, the four resistance 24 are connected and second joint and earth potential of second lead 23 that second joint of the motor earth potential side of voltage divider capacitor 4 is connected between.Two antiparallel diodes are connected with second joint of first lead 22 that first joint of the tapping plate side of described and voltage divider capacitor 4 is connected, that is to say, from first diode 27 anode be connected with second joint of described first lead 22 and from second diode 28 negative electrode be connected with second joint of described first lead 22.The negative electrode of described first diode 27 is connected with earth potential by the resistance of being made up of two single resistance 25a1,25b and is connected with the first portion of the first hysteresis comparator 7a by the low-pass filter 26a that is made up of resistance and capacitor, and the output signal of this first portion is connected on the computer port P1.The anode of described second diode 28 is connected with earth potential by the 5th resistance of being made up of two single resistance 25a2,25b and is connected with the second portion 7b of first hysteresis comparator by the low-pass filter 26b that is made up of resistance and capacitor, and the output signal of this second portion is connected on the computer port P2.Described part resistance 25a2,25a1 are connected with power supply voltage VDD5 by other resistance with node between the 25b.
In the scheme of design for scheme as an alternative shown in Figure 5, described analysis circuit so obtains simplifying, and diode pair 27,28 promptly is not set.Second joint of described first lead 22 directly be connected with earth potential by the 5th resistance of forming by two part resistance 25a, 25b and described two part resistance 25a, 25b between node be connected with described power supply voltage VDD5 by other resistance.In addition, second joint of described first lead 22 is by being connected with the 7a of first portion of first hysteresis comparator and the second portion 7b of first hysteresis comparator with the series circuit that the second low-pass filter 26b forms by the first low-pass filter 26a that is made up of resistance and capacitor respectively, and the output terminal of described 7a of first portion and second portion 7b is connected respectively to again on computer port P1, the P2.The output terminal of the said first low-pass filter 26a also can also can be with second measuring point of the second portion 7b that acts on described first hysteresis comparator with the output terminal of first measuring point of the 7a of first portion that acts on described first hysteresis comparator and the described second low-pass filter 26b.As replacement scheme with the device that is connected to the hysteresis comparator on the computer port, also the signal of handling by means of described low-pass filter correspondingly can be directed into such as analog to digital-transducer fast (FADC) of μ Cs (microcontroller) go up and by means of the signal processing of numeral and such as filtering, integration, threshold ratio, windowization and similar approach obtain handling.
Fig. 6 shows a kind of other mode of execution, and in this embodiment, two are formed and amount to by capacitor, diode peak value via vertical coupling by signal that analysis circuit received and obtain analyzing on aimed capacitor.In addition, the first input end of described analysis circuit is connected with the negative electrode of first diode 30, the anode of described first diode 30 then is connected with power supply voltage VDD5 and is connected with first joint of described aimed capacitor 36 by the 6th resistance 34 by the AC resistance of being made up of the parallel circuit of capacitor and resistance 32, and second joint of described aimed capacitor 36 is connected with earth potential.The negative electrode of described the 4th diode 31 is connected with power supply voltage VDD5 by the AC resistance 33 that is made of the capacitor and the parallel circuit of resistance and is connected with first joint of described aimed capacitor 36 equally by resistance 35.
Claims (10)
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008040481.0 | 2008-07-16 | ||
| DE102008040481 | 2008-07-16 | ||
| DE102008042883.3 | 2008-10-16 | ||
| DE102008042883A DE102008042883A1 (en) | 2008-07-16 | 2008-10-16 | Arrangement for detecting the cylinder assignment of an internal combustion engine |
| PCT/EP2009/058768 WO2010006993A1 (en) | 2008-07-16 | 2009-07-09 | Arrangement for detecting the cylinder assignment of an internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102099564A true CN102099564A (en) | 2011-06-15 |
| CN102099564B CN102099564B (en) | 2014-02-26 |
Family
ID=41427367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980128042.0A Expired - Fee Related CN102099564B (en) | 2008-07-16 | 2009-07-09 | Device for checking the cylinder assignment of an internal combustion engine |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2304224A1 (en) |
| CN (1) | CN102099564B (en) |
| BR (1) | BRPI0915766A2 (en) |
| DE (1) | DE102008042883A1 (en) |
| WO (1) | WO2010006993A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4052665A (en) * | 1976-03-30 | 1977-10-04 | Snap-On Tools Corporation | Capacitive pickup device for pulsating high voltage measurements |
| EP0032647A1 (en) * | 1980-01-17 | 1981-07-29 | Regie Nationale Des Usines Renault | Synchronous sensing device for a controlled-ignition engine |
| EP0272225A1 (en) * | 1986-12-15 | 1988-06-22 | FIAT AUTO S.p.A. | Electrical monitoring device for enabling the identification of the working phases of a cylinder of a controlled-ignition internal combustion engine |
| US4847563A (en) * | 1988-07-12 | 1989-07-11 | Snap-On Tools Corporation | Distributorless ignition interface |
| EP0619428A2 (en) * | 1993-04-08 | 1994-10-12 | Saturn Corporation | Engine position detection for a direct ignition system |
| CN2383994Y (en) * | 1999-04-26 | 2000-06-21 | 杨世明 | All-digitalized self-check function motor vehicle electronic ignitor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2356440A1 (en) * | 1973-11-12 | 1975-05-15 | Hartmann & Braun Ag | Test unit to determine ignition voltage - has amplifier with time constant at least one hundred times greater than ignition impulse |
| DE3641144C2 (en) * | 1986-12-02 | 1995-07-13 | Fichtel & Sachs Ag | Peak voltage measuring device |
| DE4028545A1 (en) | 1989-09-08 | 1991-03-21 | Akebono Brake Ind | Antilocking braking system for motor vehicle - estimates vehicle velocity and limits acceleration and deceleration within predetermined range |
-
2008
- 2008-10-16 DE DE102008042883A patent/DE102008042883A1/en not_active Withdrawn
-
2009
- 2009-07-09 WO PCT/EP2009/058768 patent/WO2010006993A1/en not_active Ceased
- 2009-07-09 CN CN200980128042.0A patent/CN102099564B/en not_active Expired - Fee Related
- 2009-07-09 BR BRPI0915766A patent/BRPI0915766A2/en not_active IP Right Cessation
- 2009-07-09 EP EP09780390A patent/EP2304224A1/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4052665A (en) * | 1976-03-30 | 1977-10-04 | Snap-On Tools Corporation | Capacitive pickup device for pulsating high voltage measurements |
| EP0032647A1 (en) * | 1980-01-17 | 1981-07-29 | Regie Nationale Des Usines Renault | Synchronous sensing device for a controlled-ignition engine |
| EP0272225A1 (en) * | 1986-12-15 | 1988-06-22 | FIAT AUTO S.p.A. | Electrical monitoring device for enabling the identification of the working phases of a cylinder of a controlled-ignition internal combustion engine |
| US4847563A (en) * | 1988-07-12 | 1989-07-11 | Snap-On Tools Corporation | Distributorless ignition interface |
| EP0619428A2 (en) * | 1993-04-08 | 1994-10-12 | Saturn Corporation | Engine position detection for a direct ignition system |
| CN2383994Y (en) * | 1999-04-26 | 2000-06-21 | 杨世明 | All-digitalized self-check function motor vehicle electronic ignitor |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2304224A1 (en) | 2011-04-06 |
| CN102099564B (en) | 2014-02-26 |
| WO2010006993A1 (en) | 2010-01-21 |
| DE102008042883A1 (en) | 2010-01-21 |
| BRPI0915766A2 (en) | 2015-11-03 |
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