CN201716182U - Ignition module used for engine test system - Google Patents
Ignition module used for engine test system Download PDFInfo
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- CN201716182U CN201716182U CN 201020200416 CN201020200416U CN201716182U CN 201716182 U CN201716182 U CN 201716182U CN 201020200416 CN201020200416 CN 201020200416 CN 201020200416 U CN201020200416 U CN 201020200416U CN 201716182 U CN201716182 U CN 201716182U
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Abstract
The utility model discloses an ignition module used for an engine test system, belonging to the detection field. The ignition module comprises a computer ignition signal output end and an ignition coil, and is characterized in that a photoelectric isolation circuit and an electric control switch circuit are arranged between the computer ignition signal output end and the primary coil of the ignition coil, wherein the signal input end of the photoelectric isolation circuit is connected with the computer ignition signal output end, and the signal output end thereof is connected with the control input end of the electric control switch circuit; the electric control switch circuit is connected in series between the primary coil of the ignition coil and a control power supply; and a shielding layer is arranged on the connecting enable outer layer between the computer ignition signal output end and the signal input end of the photoelectric isolation circuit as well as between the output end of the electric control switch circuit and the ignition coil. The ignition module can truly represent the whole working process of the ignition system, provide convenience for the online test of the engine ignition system, be convenient to find the problems in the ignition circuit in time, and further improve the test precision and reliability.
Description
Technical field
The utility model belongs to detection range, relates in particular to a kind of proving installation that is used for engine igniting system.
Background technology
Engine need be tested the firing system of engine when dispatching from the factory detection or maintenance post debugging.
The igniting of engine test is the important step that engine dispatches from the factory and detects, and traditional Engine Block Test all is based on engine thermal and has a try and test, and therefore can't carry out the on-line quick detection of assembly line, and can produce large quantity of exhaust gas and noise, and environment is polluted.
Development along with the computing machine online measuring technique, the cold test method that a kind of engine now newly occurred, by the accurate controlled servomotor of an external rotating speed, drag the running of engine speed stabilizing, at each position of engine, various detecting sensors are set simultaneously, by the parameters of monitoring engine in operation process, judge the working condition of each mechanical composition part of engine, thereby reach the purpose of detection of engine.
In above-mentioned test process, engine is in no fuel oil running status, but engine remains according to four stroke operations, in these four processes, owing to does not have the injection of fuel oil, thereby do not have actual oil inflame phenomenon and process, but the course of action of its igniting exists all the time.
Magnetic field sensor by close 4 ignition coils on the testboard bay comes the variation in magnetic field in the inductive ignition process and the waveform that record is sensed, thereby can realize the function of engine igniting system quick online detection.
For automobile production manufacturer, after the installation process in place of its engine finishes, debugging need link the mechanical part of car load electric-control system and generator, according to the concrete operation characteristic/parameter of every engine, the various setup parameters of electric-control system are carried out matching adjustment/setting and detect.
For digital EFI automobile engine system, the IGNITION CONTROL of motor car engine is to control by ECU (Electronic Control Unit, electronic control unit).
Under the normal condition, the signal that ECU transmits according to various sensors (such as signals such as engine speed, coolant water temperature, intake air temperature, throttle position, lambda sensor, admission pressures), by analysis, calculating, judgement, thereby accurately control and select optimum igniting and the oil spout moment and distributive value.
But, when engine igniting system is done quick online detection, usually engine is to be in non-operating condition, so a lot of signal of sensor are non-normal state signals, so engine igniting system is being carried out in the cold test process, the ignition signal that can't use ECU to send need produce corresponding ignition signal by other modes, could do corresponding cold test work to engine igniting system.
The utility model content
Technical problem to be solved in the utility model provides a kind of ignition module that is used for engine testing system, it is according to the control signal of computer detection system, produce corresponding igniting course of action, under the situation that does not need to drag at engine, need not the intervention of vehicle-mounted ECU, get final product the entire work process of true reappearance firing system, for the on-line testing of engine igniting system is provided convenience, help in time to find the problem of ignition circuit existence, the precision and the reliability of its test are further enhanced.
The technical solution of the utility model is: a kind of ignition module that is used for engine testing system is provided, comprise test computer ignition signal output terminal and engine igniting coil, it is characterized in that: between the ignition coil primary coil of test computer ignition signal output terminal and engine, set gradually a photoelectric isolating circuit and an electric-controlled switch circuit; The signal input part of described photoelectric isolating circuit is connected with the ignition signal output terminal of test computer, and the signal output part of photoelectric isolating circuit is connected with the control input end of electric-controlled switch circuit; Described electric-controlled switch circuit is serially connected between engine igniting coil primary coil and the control power supply; The wire external layer that is connected between the signal input part of described test computer ignition signal output terminal and photoelectric isolating circuit and between electric-controlled switch circuit output end and the engine igniting coil is provided with screen layer.
Described engine igniting coil is divided into four groups, and every group is two ignition coils; Described ignition module is divided into two groups, and each is organized ignition module and is made of a photoelectric isolating circuit and an electric-controlled switch circuit correspondence successively; The output terminal of described first group of ignition module is organized the corresponding connection of primary coil of first ignition coil in ignition coil with each; The output terminal of second group of ignition module is organized the corresponding connection of primary coil of second ignition coil in ignition coil with each.
The signal input part of described first group of ignition module photoelectric isolating circuit is connected with the first ignition signal output terminal of test computer, and the signal input part of second group of ignition module photoelectric isolating circuit is connected with the second ignition signal output terminal of test computer; The signal output part of first group of ignition module photoelectric isolating circuit is connected with the control input end of first group of ignition module electric-controlled switch circuit; The signal output part of second group of ignition module photoelectric isolating circuit is connected with the control input end of second group of ignition module electric-controlled switch circuit; The output terminal of first group of ignition module electric-controlled switch circuit is serially connected between the primary coil and control power supply 0V end of each engine igniting coil group first ignition coil; The output terminal of second group of ignition module electric-controlled switch circuit, the primary coil that is serially connected in each engine igniting coil group second ignition coil is held with control power supply 0V.
The photoelectric isolating circuit of described first group of ignition module comprises first resistance and first photoelectric isolated chip at least; The photoelectric isolating circuit of described second group of ignition module comprises second resistance and second photoelectric isolated chip at least; The electric-controlled switch circuit of described first group of ignition module comprises the 3rd resistance, the first electric-controlled switch element and the 5th resistance at least; The electric-controlled switch circuit of described second group of ignition module comprises the 4th resistance, the second electric-controlled switch element and the 6th resistance at least; Wherein, first resistance string is connected between the input end of ignition signal first output terminal of test computer and first photoelectric isolated chip, and the output terminal of first photoelectric isolated chip is connected through the control end of the 3rd resistance with the first electric-controlled switch element; Second resistance string is connected between the input end of ignition signal second output terminal of test computer and second photoelectric isolated chip, and the output terminal of second photoelectric isolated chip is connected through the control end of the 4th resistance with the second electric-controlled switch element; Each head end of organizing first, second ignition coil in the ignition coil and control power supply+the 12V end is connected, each end of organizing first ignition coil in the ignition coil is connected with the 0V end of control power supply through the first electric-controlled switch element, and each end of organizing second ignition coil in the ignition coil is connected with the 0V end of control power supply through the second electric-controlled switch element; Five, the 6th resistance is attempted by the output terminal of first, second electric-controlled switch element respectively and controls between the 0V end of power supply.
Described photoelectric isolated chip comprises the photoelectrical coupler chip.
Described electric-controlled switch element comprises controllable silicon, insulated gate bipolar power tube or Darlington transistor.
Compared with the prior art, the utility model has the advantages that:
1. adopt this device, can be under the blowdown firing state at engine, for its firing system provides the igniting that meets engine running requirement trigger pip, need not the intervention of vehicle-mounted ECU, get final product the entire work process of true reappearance firing system, provide convenience for the on-line testing of engine igniting system, help the problem of finding that in time ignition circuit exists;
2. adopt photoelectricity to isolate and signal wire shields, to greatest extent Isolated Shield outside electromagnetic interference;
Since its trigger pip from test computer, the precision of test, repeatability and reliability all are further improved.
Description of drawings
Fig. 1 is a circuit structure block scheme of the present utility model;
Fig. 2 is the wiring diagram of the utility model embodiment.
Embodiment
Below in conjunction with drawings and Examples the utility model is described further.
Among Fig. 1, the technical program is between the primary coil of the ignition coil Q of test computer ignition signal output terminal and engine, a photoelectric isolating circuit and an electric-controlled switch circuit have been set gradually, the signal input part of photoelectric isolating circuit is connected with the ignition signal output terminal IN/COM of test computer, and the signal output part of photoelectric isolating circuit is connected with the control input end of electric-controlled switch circuit; Its electric-controlled switch circuit is serially connected between engine igniting coil primary coil and the control power supply, the wire external layer that is connected between the signal input part of test computer ignition signal output terminal and photoelectric isolating circuit and between electric-controlled switch circuit output end and the engine igniting coil is provided with screen layer.
Among Fig. 2, engine igniting coil is divided into four groups of Q1～Q4, and every component is two ignition coils (representing with QX1 and QX2 successively among the figure).
Ignition module is divided into two groups of A, B, and each is organized ignition module and is made of a photoelectric isolating circuit and an electric-controlled switch circuit correspondence successively.
Wherein, and the first ignition coil QX1 in the output terminal of first group of ignition module and each the group ignition coil (X=1,2,3,4) primary coil is corresponding down together connects; The output terminal of second group of ignition module is organized the corresponding connection of primary coil of the second ignition coil QX2 in ignition coil with each.
The signal input part of first group of ignition module photoelectric isolating circuit is connected with the first ignition signal output terminal of test computer, and the signal input part of second group of ignition module photoelectric isolating circuit is connected with the second ignition signal output terminal of test computer; The signal output part of first group of ignition module photoelectric isolating circuit is connected with the control input end of first group of ignition module electric-controlled switch circuit; The signal output part of second group of ignition module photoelectric isolating circuit is connected with the control input end of second group of ignition module electric-controlled switch circuit; The output terminal of first group of ignition module electric-controlled switch circuit is serially connected between the primary coil and control power supply 0V end of each engine igniting coil group first ignition coil; The output terminal of second group of ignition module electric-controlled switch circuit, the primary coil that is serially connected in each engine igniting coil group second ignition coil is held with control power supply 0V.
Concrete, the photoelectric isolating circuit of first group of ignition module A comprises first resistance R 1 and the first photoelectric isolated chip G1 at least; The photoelectric isolating circuit of second group of ignition module B comprises second resistance R 2 and the second photoelectric isolated chip G2 at least; The electric-controlled switch circuit of first group of ignition module comprises the 3rd resistance R 3, the first electric-controlled switch elements T 1 and the 5th resistance R 5 at least; The electric-controlled switch circuit of second group of ignition module comprises the 4th resistance R 4, the second electric-controlled switch elements T 2 and the 6th resistance R 6. at least
Wherein, first resistance R 1 is serially connected between the input end 2 of the ignition signal first output terminal IN of test computer and the first photoelectric isolated chip G1, and the output terminal 6 of the first photoelectric isolated chip G1 is connected through the control end G of the 3rd resistance R 3 with the first electric-controlled switch elements T 1; Second resistance R 2 is serially connected between the input end 2 of the ignition signal second output terminal IN2 of test computer and the second photoelectric isolated chip G2, and the output terminal 6 of the second photoelectric isolated chip G2 is connected through the control end G of the 4th resistance R 4 with the second electric-controlled switch elements T 2.
Each head end of organizing first, second ignition coil QX1, QX2 in the ignition coil and control power supply+the 12V end is connected, each end of organizing first ignition coil in the ignition coil is connected with the 0V end of control power supply through the first electric-controlled switch elements T 1, and each end of organizing second ignition coil in the ignition coil is connected with the 0V end of control power supply through the second electric-controlled switch elements T 2; Five, the 6th resistance R 5, R6 are attempted by between the 0V end of the output terminal C of the first electric-controlled switch elements T 1, the second electric-controlled switch elements T 2 and control power supply through resistance R 7 respectively.
Described photoelectric isolated chip comprises the photoelectrical coupler chip, and the luminescent device that is used to transmit the photo-coupler of simulating signal is that diode, optical receiver are phototriode.When the light emitting diode, just form a light source as electric current, this light source irradiation makes phototriode produce collector current to the phototriode surface, the size of this electric current and the power of illumination, that is the size that flows through the forward current of diode is directly proportional.
Owing to transmit by light signal between the input end of photo-coupler and the output terminal, thereby on electric, isolate fully between two parts, there are not the feedback and the interference of electric signal, so stable performance, antijamming capability is strong.Coupling capacitance between luminotron and the photosensitive tube little (about 2pf), withstand voltage height (about 2.5KV) are so common-mode rejection ratio is very high.Electric isolation between input and output depends on the insulation resistance between two parts power supply.In addition, because of its input resistance little (about 10 Ω), the noise in high internal resistance source is equivalent to by short circuit.Therefore, the simulating signal buffer circuit that is made of photo-coupler has good electric property.
Optional TLP25X series of above-mentioned photoelectrical coupler chip model or function be the photoelectrical coupler chip of same or analogous other models with it.
Described electric-controlled switch element comprises controllable silicon, insulated gate bipolar power tube or Darlington transistor, considers from the engineering science angle, adopts the IGBT element to be advisable during actual enforcement.
IGBT (Insu1ated Gate Bipolar Transistor), the insulated gate bipolar power tube, the compound full-control type voltage driven type power electronic devices of forming by BJT (double pole triode) and MOS (insulating gate type field effect tube), have MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor concurrently, the advantage of low conduction voltage drop two aspects of high input impedance metal-oxide half field effect transistor) and GTR (Giant Transistor, power transistor).The GTR saturation pressure reduces, and current carrying density is big, but drive current is bigger; The MOSFET driving power is very little, and switching speed is fast, but conduction voltage drop is big, and current carrying density is little.
IGBT combines the advantage of above two kinds of devices, and the little and saturation pressure of driving power reduces, and is fit to very much to be applied to DC voltage and is fields such as 600V and above converter system such as alternating current generator, frequency converter, Switching Power Supply, lighting circuit, traction transmission.
The optional ISL9V3040D3S of above-mentioned IGBT element model, ISL9V3040S3S, ISL9V3040P3, ISL9V3040S3 or NGB15N41CLT4G series or function be the IGBT element of same or analogous other models with it.
During the work of this device, test computer is according to the timing signal of engine, by ignition signal output terminal output ignition signal, when this module receives the ignition signal of self-testing system, isolate rear drive electric-controlled switch element conductive through photoelectricity, the voltage that this moment, the ignition coil primary coil was born is supply voltage.When the ignition signal negative edge, the electric-controlled switch element turn-offs, and produce instantaneous high pressure at the ignition coil secondary coil this moment, and spark plug punctures, and produces spark.
Because the utility model need not the intervention of vehicle-mounted ECU, get final product the entire work process of true reappearance firing system, can be under the blowdown firing state at engine, for its firing system provides the igniting that meets engine running requirement trigger pip, provide convenience for the on-line testing of engine igniting system, help the problem of finding that in time ignition circuit exists; Simultaneously, because its on/off trigger pip is from test computer, the precision of test, repeatability and reliability all are further improved; In addition, adopt photoelectricity to isolate and the signal wire shielding, to greatest extent Isolated Shield outside electromagnetic interference, the reliable/stable that helps whole device is moved.
The utility model can be widely used in the field tests of automotive engine ignition system.
Claims (5)
1. an ignition module that is used for engine testing system comprises test computer ignition signal output terminal and engine igniting coil, it is characterized in that:
Between the ignition coil primary coil of test computer ignition signal output terminal and engine, set gradually a photoelectric isolating circuit and an electric-controlled switch circuit;
The signal input part of described photoelectric isolating circuit is connected with the ignition signal output terminal of test computer, and the signal output part of photoelectric isolating circuit is connected with the control input end of electric-controlled switch circuit;
Described electric-controlled switch circuit is serially connected between engine igniting coil primary coil and the control power supply;
The wire external layer that is connected between the signal input part of described test computer ignition signal output terminal and photoelectric isolating circuit and between electric-controlled switch circuit output end and the engine igniting coil is provided with screen layer.
2. according to the described ignition module that is used for engine testing system of claim 1, it is characterized in that described engine igniting coil is divided into four groups, every group is two ignition coils; Described ignition module is divided into two groups, and each is organized ignition module and is made of a photoelectric isolating circuit and an electric-controlled switch circuit correspondence successively; The output terminal of described first group of ignition module is organized the corresponding connection of primary coil of first ignition coil in ignition coil with each; The output terminal of second group of ignition module is organized the corresponding connection of primary coil of second ignition coil in ignition coil with each.
3. according to the described ignition module that is used for engine testing system of claim 2, the signal input part that it is characterized in that described first group of ignition module photoelectric isolating circuit is connected with the first ignition signal output terminal of test computer, and the signal input part of second group of ignition module photoelectric isolating circuit is connected with the second ignition signal output terminal of test computer; The signal output part of first group of ignition module photoelectric isolating circuit is connected with the control input end of first group of ignition module electric-controlled switch circuit; The signal output part of second group of ignition module photoelectric isolating circuit is connected with the control input end of second group of ignition module electric-controlled switch circuit; The output terminal of first group of ignition module electric-controlled switch circuit is serially connected between the primary coil and control power supply 0V end of each engine igniting coil group first ignition coil; The output terminal of second group of ignition module electric-controlled switch circuit, the primary coil that is serially connected in each engine igniting coil group second ignition coil is held with control power supply 0V.
4. according to the described ignition module that is used for engine testing system of claim 3, it is characterized in that
The photoelectric isolating circuit of described first group of ignition module comprises first resistance and first photoelectric isolated chip at least;
The photoelectric isolating circuit of described second group of ignition module comprises second resistance and second photoelectric isolated chip at least;
The electric-controlled switch circuit of described first group of ignition module comprises the 3rd resistance, the first electric-controlled switch element and the 5th resistance at least;
The electric-controlled switch circuit of described second group of ignition module comprises the 4th resistance, the second electric-controlled switch element and the 6th resistance at least;
Wherein, first resistance string is connected between the input end of ignition signal first output terminal of test computer and first photoelectric isolated chip, and the output terminal of first photoelectric isolated chip is connected through the control end of the 3rd resistance with the first electric-controlled switch element;
Second resistance string is connected between the input end of ignition signal second output terminal of test computer and second photoelectric isolated chip, and the output terminal of second photoelectric isolated chip is connected through the control end of the 4th resistance with the second electric-controlled switch element;
Each head end of organizing first, second ignition coil in the ignition coil and control power supply+the 12V end is connected, each end of organizing first ignition coil in the ignition coil is connected with the 0V end of control power supply through the first electric-controlled switch element, and each end of organizing second ignition coil in the ignition coil is connected with the 0V end of control power supply through the second electric-controlled switch element;
Five, the 6th resistance is attempted by the output terminal of first, second electric-controlled switch element respectively and controls between the 0V end of power supply.
5. according to the described ignition module that is used for engine testing system of claim 4, it is characterized in that described photoelectric isolated chip comprises the photoelectrical coupler chip; Described electric-controlled switch element comprises controllable silicon, insulated gate bipolar power tube or Darlington transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020200416 CN201716182U (en) | 2010-05-21 | 2010-05-21 | Ignition module used for engine test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020200416 CN201716182U (en) | 2010-05-21 | 2010-05-21 | Ignition module used for engine test system |
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| Publication Number | Publication Date |
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| CN201716182U true CN201716182U (en) | 2011-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201020200416 Expired - Lifetime CN201716182U (en) | 2010-05-21 | 2010-05-21 | Ignition module used for engine test system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818704A (en) * | 2012-08-27 | 2012-12-12 | 中国航天科技集团公司第四研究院四0一所 | Simulation igniter test box for rocket engine ground test |
-
2010
- 2010-05-21 CN CN 201020200416 patent/CN201716182U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818704A (en) * | 2012-08-27 | 2012-12-12 | 中国航天科技集团公司第四研究院四0一所 | Simulation igniter test box for rocket engine ground test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: W-LBEDA HIGH TECH. DEVELOP. CO., LTD. Free format text: FORMER NAME: SHANGHAI W-IBEDA HIGH TECH. DEVE. CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 201203 Shanghai city Pudong New Area fanchun Road No. 400 Building 1 floor 301-206 room 3 Patentee after: W-Lbeda High Tech. Develop. Co., Ltd. Address before: 201203, Lane 912, Lane 18, blue wave road, Zhangjiang hi tech park, Shanghai Patentee before: Shanghai W-ibeda High Tech. Deve. Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201203 Shanghai city Pudong New Area fanchun Road No. 400 Building 1 floor 301-206 room 3 Patentee after: According to Shanghai science and technology group Limited by Share Ltd Address before: 201203 Shanghai city Pudong New Area fanchun Road No. 400 Building 1 floor 301-206 room 3 Patentee before: W-Lbeda High Tech. Develop. Co., Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110119 |