CN203035360U - Electromagnetic valve injection pulse width detection circuit - Google Patents
Electromagnetic valve injection pulse width detection circuit Download PDFInfo
- Publication number
- CN203035360U CN203035360U CN 201320040750 CN201320040750U CN203035360U CN 203035360 U CN203035360 U CN 203035360U CN 201320040750 CN201320040750 CN 201320040750 CN 201320040750 U CN201320040750 U CN 201320040750U CN 203035360 U CN203035360 U CN 203035360U
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- voltage
- resistance
- comparator
- electromagnetic valve
- circuit
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- Expired - Lifetime
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- 238000002347 injection Methods 0.000 title claims abstract description 31
- 239000007924 injection Substances 0.000 title claims abstract description 31
- 238000001514 detection method Methods 0.000 title claims abstract description 13
- 239000000446 fuel Substances 0.000 claims abstract description 19
- 230000000737 periodic effect Effects 0.000 abstract 8
- 230000007547 defect Effects 0.000 abstract 1
- 238000005070 sampling Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 4
- 230000002950 deficient Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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Abstract
The utility model discloses an electromagnetic valve injection pulse width detection circuit. The electromagnetic valve injection pulse width detection circuit is characterized by mainly comprising a high-voltage periodic line (1) and a low-voltage periodic line (2), wherein the high-voltage periodic line (1) and the low-voltage periodic line (2) are respectively connected with a high-voltage end of a motor fuel injection electromagnetic valve and a low-voltage end of the motor fuel injection electromagnetic valve, structures of the high-voltage periodic line (1) and the low-voltage periodic line (2) are absolutely the same, and the high-voltage periodic line (1) and the low-voltage periodic line (2) are both composed of a resistor bleeder circuit (3) and a comparator circuit (4). Due to the adoption of the mode of combining the resistor bleeder circuit and the comparator circuit, high-voltage signal sampling of the injection electromagnetic valve is achieved. Due to the fact that the resistor bleeder circuit can effectively reduce high-frequency pulse voltage of the injection electing electromagnetic valve, input voltages of a comparator can be effectively reduced, and therefore the defect that a traditional detection circuit can only be achieved through the adoption of an expensive differential comparator is thoroughly avoided.
Description
Technical field
The utility model relates to a kind of testing circuit, specifically refers to a kind of electromagnetic injection valve pulse width detection circuit when traditional fuel engine is adapted as duel fuel engine.
Background technique
At present, constantly under the high situation, the Economy of motor seems more and more important at oil price and Abgasgesetz, and people are also constantly seeking new counte-rplan.In order to effectively reduce the user cost of automobile, people have done many reforms to the motor of automobile and have attempted, as oil electric mixed type motor, oil gas compatible type motor and oil-gas mixed burning h type engine h of present use etc.But from present maintenance feedback data, adopt the motor of these novel energy modes, the high voltage that coil was sensed when the sample detecting circuit of its control engine fuel injection can be because of switch electromagnetic valve damages, therefore there is defective in its design, maintenance cost is higher, increase new automobile user cost to people again virtually, can not effectively reduce people's spending.
The model utility content
The purpose of this utility model is to overcome the defective that the sample detecting circuit design is unreasonable, rate of fault is higher of its engine fuel injection solenoid valve when these are adapted as duel fuel engine with traditional fuel engine at present, provide a kind of simple in structure, can effectively reduce the electromagnetic injection valve pulse width detection circuit of rate of fault and suitable all refiting engines.
The purpose of this utility model is achieved through the following technical solutions: a kind of electromagnetic injection valve pulse width detection circuit, mainly formed by the high pressure link and the lower-voltage link that are connected with the high and low pressure side of engine fuel injection solenoid valve respectively; The structure of described high pressure link and lower-voltage link is identical, by resistor voltage divider circuit and the comparator circuit of serial connection are formed mutually.
Further, described resistor voltage divider circuit is formed by resistance R 1 and resistance R 2 serial connections, and the input end of resistance R 1 then is connected with the high-voltage coil end of engine fuel injection solenoid valve, the output head grounding of resistance R 2; The input end of described comparator circuit then is connected in the tie point of resistance R 1 and resistance R 2.
Described comparator circuit is by comparator U, and the resistance R U that is connected with the output terminal of comparator U forms; The positive input terminal of comparator U then is connected in the tie point of resistance R 1 and resistance R 2.
The utility model is compared than prior art and is had the following advantages and beneficial effect:
(1) the utility model overall structure is very simple, and its fabricating cost is comparatively cheap.
(2) the utility model mode of having adopted resistor voltage divider circuit and comparator circuit to combine realizes the high-voltage signal collection of injection electromagnetic valve, because resistor voltage divider circuit can effectively reduce the high-frequency pulse voltage of injection electromagnetic valve, therefore can effectively reduce the input voltage of comparator, thus the defective of thoroughly avoiding conventional detection circuitry can only adopt expensive differential comparator to realize.
(3) the utility model can be applicable to various types of motors, has very strong versatility and applicability.
Description of drawings
Fig. 1 is overall structure schematic representation of the present utility model.
Fig. 2 is test data figure of the present utility model.
Reference character title in the above accompanying drawing is respectively:
1-high pressure link, 2-lower-voltage link, 3-resistor voltage divider circuit, 4-comparator circuit.
Embodiment
Below in conjunction with embodiment the utility model is described in further detail, but mode of execution of the present utility model is not limited thereto.
Embodiment
As shown in Figure 1, electromagnetic injection valve pulse width detection circuit of the present utility model comprises two links that are connected with the engine fuel injection solenoid valve respectively, i.e. high pressure link 1 and the lower-voltage link 2 that is connected with the high and low pressure end-coil of engine fuel injection solenoid valve.By these two links, just can accurately the high-voltage pulse signal of engine fuel injection solenoid valve when spraying be gathered and transmit, for car running computer analysis and use.
As described in Figure, the structure of this high pressure link 1 and lower-voltage link 2 is all identical, forms by resistor voltage divider circuit 3 and comparator circuit 4.The resistor voltage divider circuit 3 of described high pressure link 1 comprises two resistance R 1 and the resistance R 2 of serial connection mutually, the input end of resistance R 1 be connected with the high voltage terminal coil of engine fuel injection solenoid valve (to get access to high-voltage pulse signal V-H1), its output terminal then is connected with the input end of resistance R 2, and the output terminal of resistance R 2 is ground connection then.
Correspondingly, the resistor voltage divider circuit structure of lower-voltage link 2 also is so, and just the input end of the resistance R 1 of this lower-voltage link 2 is be connected with the low voltage terminal coil of engine fuel injection solenoid valve (to get access to low voltage pulse signal V-H2).
4 of the comparator circuits of high pressure link 1 are made up of with the resistance R U that is connected with its output terminal common comparator U, and the positive input terminal of this comparator U will be connected with the tie point of resistance R 1 with resistance R 2.Correspondingly, the comparison circuit 4 of lower-voltage link 2 also is made up of with the resistance R U that is connected with its output terminal comparator U.In order to ensure using effect, the resistance of described resistance R 1 and resistance R 2 all equates.
Test data of the present utility model as shown in Figure 2, namely sampled point is the two poles of the earth of engine fuel injection electromagnetic valve coil, when the voltage of comparator U positive input pin during greater than negative terminal input pin voltage V_REF, comparator is output as height, otherwise is low.Antijamming capability for intensifier circuit, the voltage that divider resistance R2 got when voltage rise to arrive half of expection maximum value (being recorded by test) when the benchmark comparing voltage value V_REF of comparator U was located at engine fuel injection solenoid valve normal injection, interference that also can the elimination high pressure fluctuations when can select liftoff interference like this.
As mentioned above, just can well realize the utility model.
Claims (3)
1. an electromagnetic injection valve pulse width detection circuit is characterized in that: mainly be made up of the high pressure link (1) that is connected with the high and low pressure side of engine fuel injection solenoid valve respectively and lower-voltage link (2); The structure of described high pressure link (1) and lower-voltage link (2) is identical, by resistor voltage divider circuit (3) and the comparator circuit (4) of serial connection are formed mutually.
2. a kind of electromagnetic injection valve pulse width detection circuit according to claim 1, it is characterized in that: described resistor voltage divider circuit (3) is formed by resistance R 1 and resistance R 2 serial connections, the input end of resistance R 1 then is connected with the high-voltage coil end of engine fuel injection solenoid valve, the output head grounding of resistance R 2; The input end of described comparator circuit (4) then is connected in the tie point of resistance R 1 and resistance R 2.
3. a kind of electromagnetic injection valve pulse width detection circuit according to claim 2 is characterized in that: described comparator circuit (4) is by comparator U, and the resistance R U that is connected with the output terminal of comparator U forms; The positive input terminal of comparator U then is connected in the tie point of resistance R 1 and resistance R 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320040750 CN203035360U (en) | 2013-01-25 | 2013-01-25 | Electromagnetic valve injection pulse width detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320040750 CN203035360U (en) | 2013-01-25 | 2013-01-25 | Electromagnetic valve injection pulse width detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203035360U true CN203035360U (en) | 2013-07-03 |
Family
ID=48687492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320040750 Expired - Lifetime CN203035360U (en) | 2013-01-25 | 2013-01-25 | Electromagnetic valve injection pulse width detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203035360U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106471239A (en) * | 2014-06-27 | 2017-03-01 | 大陆汽车有限公司 | Method for determining the state of injection valve |
-
2013
- 2013-01-25 CN CN 201320040750 patent/CN203035360U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106471239A (en) * | 2014-06-27 | 2017-03-01 | 大陆汽车有限公司 | Method for determining the state of injection valve |
| CN106471239B (en) * | 2014-06-27 | 2019-11-12 | 大陆汽车有限公司 | Method for determining the state of injection valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Electromagnetic valve injection pulse width detection circuit Effective date of registration: 20150615 Granted publication date: 20130703 Pledgee: Jiangsu Jiangnan Rural Commercial Bank Limited by Share Ltd. Pledgor: Changzhou ECTEK Automotive Electronics Co.,Ltd. Registration number: 2015990000472 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20160802 Granted publication date: 20130703 Pledgee: Jiangsu Jiangnan Rural Commercial Bank Limited by Share Ltd. Pledgor: Changzhou ECTEK Automotive Electronics Co.,Ltd. Registration number: 2015990000472 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Electromagnetic valve injection pulse width detection circuit Effective date of registration: 20160805 Granted publication date: 20130703 Pledgee: Jiangsu Jiangnan Rural Commercial Bank Limited by Share Ltd. Pledgor: Changzhou ECTEK Automotive Electronics Co.,Ltd. Registration number: 2016990000682 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No.88 Jintan Avenue, Jintan District, Changzhou City, Jiangsu Province 213299 Patentee after: CHANGZHOU YIKONG AUTOMOTIVE ELECTRONICS CO.,LTD. Address before: 213000 floor 3, block D, Tianrun science and technology building, Changzhou science and Education City, No. 801, middle Changwu Road, Wujin District, Changzhou City, Jiangsu Province Patentee before: Changzhou ECTEK Automotive Electronics Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20130703 Pledgee: Jiangsu Jiangnan Rural Commercial Bank Limited by Share Ltd. Pledgor: Changzhou ECTEK Automotive Electronics Co.,Ltd. Registration number: 2016990000682 |