CN209129775U - A kind of fuel injector tester - Google Patents
A kind of fuel injector tester Download PDFInfo
- Publication number
- CN209129775U CN209129775U CN201822094155.2U CN201822094155U CN209129775U CN 209129775 U CN209129775 U CN 209129775U CN 201822094155 U CN201822094155 U CN 201822094155U CN 209129775 U CN209129775 U CN 209129775U
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- Prior art keywords
- fuel injector
- tester
- computer
- host
- model
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Abstract
The utility model discloses a kind of fuel injector tester, including tester host, tester host one end connects computer, and the other end connects a wherein conducting wire for ECU computer board and fuel injector, flows through the current waveform display of fuel injector on computers.The utility model can collect the current signal at fuel injector end well, and the whether normal of fuel injector can be judged according to the characteristic for collecting current signal, by the comparison with normal waveform, more can intuitively check the abnormal cause of fuel injector coil.
Description
Technical field
The utility model is applied to auto repair and diagnosis industry, in particular to a kind of fuel injector tester.
Background technique
Current fuel injector maintenance, which is substantially, to be needed to remove fuel injector from vehicle, then measures oil spout by multimeter
The coil resistance value of device, measures the short circuit and open circuit of fuel injector connecting line, or even to be installed on testing stand and be powered test etc.
Certain methods detect.It is dismantled and operation also needs specific skill and could complete, careless slightly also to damage spray
The quality and service life of oily device.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of fuel injector testers, can quickly detect on vehicle
The quality of fuel injector, and analyzed by computer and quickly help maintenance personal to search failure problems and method for maintaining is provided.
The utility model is achieved through the following technical solutions: a kind of fuel injector tester, including tester host,
Tester host one end connects computer, and the other end connects a wherein conducting wire for ECU computer board and fuel injector, flows through fuel injector
Current waveform display on computers.
Tester host clamps a wherein conducting wire for fuel injector by a clip as a preferred technical solution,.
It is as a preferred technical solution, the iron core of wound around coil inside the clip.
The tester host includes signal acquisition circuit, signal amplification circuit, AD sampling as a preferred technical solution,
Circuit, data output circuit, data output circuit output data to computer end, by computer end analysis shows that waveform.
The tester host is powered by computer USB as a preferred technical solution, and Wave data passes through USB interface
Biography is clearly shown with computer.
The beneficial effects of the utility model are: one, need to push aside line skin, carry for looking now at fuel injector signal on vehicle
The problem of oscilloscope measurement, uses non-access formula current sample, need to only measure one that pincers block in tested circuit and connect
Line, while Wave data being passed by USB interface and is clearly shown with computer；
Two, for the open circuit of oil spout, short-circuit and scarce circle problem passes through conversion and and history waveform or the progress of cloud waveform
Comparative analysis, can accurately decision problem place；
Three, it is powered using computer USB, is not necessarily to external power supply；
Four, equipment 0 to ± 80A multi gear wide-range high-accuracy signal sampling, energy high-resolution can be suitably used for small electric current
Variation.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the working principle diagram of the tester host of the utility model.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, abstract and attached drawing), except non-specifically chatting
It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only
It is an example in a series of equivalent or similar characteristics.
As shown in Figure 1, include tester host, tester host one end connect computer, the other end connect ECU computer board with
And a wherein conducting wire for fuel injector, flow through the current waveform display of fuel injector on computers.
Wherein, tester host clamps a wherein conducting wire for fuel injector by a clip, is wound around coil inside clip
Iron core when conducting wire passes through there are electric current according to electromagnetic induction principle, the low current of variation can be generated in coil, is passed through
Sampling resistor converts a signal into voltage signal.
As shown in Fig. 2, tester host includes signal acquisition circuit, signal amplification circuit, AD sample circuit, data output
Circuit, data output circuit output data to computer end, by computer end analysis shows that waveform, by sampling resistor, by signal
Voltage signal is converted to, voltage signal will be collected, the amplification of different multiples is carried out according to different gear values, it finally will letter
Number output is acquired to MCU, MCU by quick AD, converts digital signal for voltage signal, then by accordingly converting, finally
Output shows continuous waveform.
Wherein, tester host is powered by computer USB, and Wave data is passed by USB interface and clearly shown with computer
Show, is not necessarily to external power supply.
Test process:
1. tester using computer USB power, after tester is connect with computer, clamp fuel injector wherein one lead
Line.
2. start vehicle ignition switch, at this moment flow through fuel injector current waveform will real-time display on computer software
Face.
3. waveform can be adjusted by computer display interface, history waveform or networking Sign-On services can also be recalled
Device selects the reference waveform of the fuel injector of corresponding vehicle or model to be compared.
4. clicking analysis, it may be implemented to analyze the waveform of current fuel injector, output analysis result.
The beneficial effects of the utility model are: the utility model instead preceding can be diagnosed by oscillograph and multimeter
The method of fuel injector, and entire test process does not need to cut open conducting wire and the consuming jobs such as fuel injector of dismantling, while by soft
The waveform of acquisition is carried out specialty analysis by part, can cracking help maintenance personal's queueing problem.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, any change or replacement expected without creative work be should be covered within the scope of the utility model.
Therefore, the protection scope of the utility model should be determined by the scope of protection defined in the claims.
Claims (5)
1. a kind of fuel injector tester, it is characterised in that: including tester host, tester host one end connects computer, another
A wherein conducting wire for end connection ECU computer board and fuel injector, flows through the current waveform display of fuel injector on computers.
2. fuel injector tester as described in claim 1, it is characterised in that: tester host clamps fuel injector by a clip
A wherein conducting wire.
3. fuel injector tester as claimed in claim 2, it is characterised in that: be the iron core of wound around coil inside the clip.
4. fuel injector tester as described in claim 1, it is characterised in that: the tester host includes signal acquisition electricity
Road, signal amplification circuit, AD sample circuit, data output circuit, data output circuit output data to computer end, pass through computer
End is analysis shows that waveform.
5. fuel injector tester as described in claim 1, it is characterised in that: the tester host is powered by computer USB,
Wave data is passed by USB interface and is clearly shown with computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822094155.2U CN209129775U (en) | 2018-12-13 | 2018-12-13 | A kind of fuel injector tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822094155.2U CN209129775U (en) | 2018-12-13 | 2018-12-13 | A kind of fuel injector tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209129775U true CN209129775U (en) | 2019-07-19 |
Family
ID=67248759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822094155.2U Active CN209129775U (en) | 2018-12-13 | 2018-12-13 | A kind of fuel injector tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209129775U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113189904A (en) * | 2021-04-15 | 2021-07-30 | 常州易控汽车电子股份有限公司 | Detection circuit and detection method for oil sprayer driving circuit |
-
2018
- 2018-12-13 CN CN201822094155.2U patent/CN209129775U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113189904A (en) * | 2021-04-15 | 2021-07-30 | 常州易控汽车电子股份有限公司 | Detection circuit and detection method for oil sprayer driving circuit |
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