CN207881949U - A kind of vehicle aftertreatment sensors simulator - Google Patents
A kind of vehicle aftertreatment sensors simulator Download PDFInfo
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- CN207881949U CN207881949U CN201721377390.XU CN201721377390U CN207881949U CN 207881949 U CN207881949 U CN 207881949U CN 201721377390 U CN201721377390 U CN 201721377390U CN 207881949 U CN207881949 U CN 207881949U
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- analog circuit
- urea
- harness
- resistance
- circuit
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Abstract
A kind of vehicle aftertreatment sensors simulator, the circuit and be installed on circuit board by two resistance circuits in series for analog voltage type sensor that single resistance for artifical resistance type sensor is constituted, the pin of each circuit connects heat examination harness end plug or rack end harness connector plug by wirning harness.The utility model is directed to different sensors type, designs corresponding analog circuit, makes each Sensor Analog Relay System state in the reasonable scope, avoids occurring influencing the failure of engine performance during engine test, ensures the normal heat examination of engine.
Description
Technical field
The utility model is related to engine manufacturing technology field more particularly to engine thermal testing technical fields.
Background technology
Engine is in heat examination bench test, due to not having the after-treatment device of vehicle part, ECU various post-processings occur
Related sensor failure, causes engine power to be restricted, and whether up to standard can not verify engine performance.To solve engine
ECU reports failure problems, there is following two schemes：
Scheme one, adjustment one edition, which are tested, uses the automatically controlled data of ECU, and shielding vehicle post-processes all dependent failures in data, full
Sufficient engine normal assays on heat examination rack need the automatically controlled data of normal ECU writing with a brush dipped in Chinese ink Engine ECU after the completion of experiment
In.
Scheme two, the after-treatment device that vehicle part is installed on heat examination rack, while urea solution is dosed in urea box,
Increase urea recovery unit at urea nozzle.
The shortcomings that scheme one：
1), increase the modification, maintenance and management workload of research staff and technologist to the automatically controlled data of ECU；
2), increase worker and write with a brush dipped in Chinese ink the automatically controlled workload datas of ECU；
3), the automatically controlled data of ECU write with a brush dipped in Chinese ink after the completion of heat examination can not proving correctness；
4) it, needs to write with a brush dipped in Chinese ink the automatically controlled data of ECU again after the completion of heat examination, without link is verified again after writing with a brush dipped in Chinese ink, there is leakage brush wind
Danger.
The shortcomings that scheme two：
1) after, increasing after-treatment device on heat examination rack, increase rack complexity, be unfavorable for heat examination rack and safeguard and tie up
It repaiies；
2), after-treatment device includes vulnerable part, and maintenance cost is high；
3), urea solution is consumables, needs periodically to dose, of high cost；
4), urea solution needs are periodically recycled and are dosed, and increase worker's workload.
Utility model content
In order to avoid occurring influencing the failure of engine performance during engine test, ensureing the normal heat examination of engine,
The utility model provides a kind of vehicle aftertreatment sensors simulator.
The utility model technical solution used for the above purpose is：A kind of vehicle aftertreatment sensors simulation dress
It sets, the resistance type sensor analog circuit circuit and be used for analog voltage that the single resistance for artifical resistance type sensor is constituted
The voltage sensor analog circuit in series by two resistance of type sensor is installed on circuit board, the pin of each circuit
Heat examination harness end plug 2 or rack end harness connector plug 1 are connected by wirning harness.
The resistance type sensor analog circuit includes：Urea nozzle metering valve analog circuit 3, air bleeding valve analog circuit 5,
SCR inlet temperature Sensor Analog Relay System circuit 6, SCR atmosphere temperature transducers analog circuit 7, urea box heating valve analog circuit 8,
Urea tube heats relay analog circuit 9, urea pump heating relay analog circuit 10, urea level analog circuit 11 and urea
Temperature simulation circuit 12.
The voltage sensor analog circuit includes urea pressure sensor analog circuit 4.
Heat examination harness end plug 2, rack end harness connector plug 1 and circuit board are installed in control box.
The vehicle aftertreatment sensors simulator of the utility model designs corresponding simulation for different sensors type
Circuit makes each Sensor Analog Relay System state in the reasonable scope, avoids occurring influencing engine performance during engine test
Failure ensures the normal heat examination of engine.Aftertreatment sensors analog circuit is mounted on inside rack harness control box, ensure that dress
The reliability set；Without worker's operation bidirectional, work pace ensure that；In aftertreatment sensors simulator without vulnerable part without
Daily maintenance is needed, maintenance cost is reduced；Directly use the automatically controlled data experiments of vehicle ECU, that is, the standard for the automatically controlled data of ECU examined
True property also avoids writing with a brush dipped in Chinese ink the quality risk that the automatically controlled data bands of ECU come again.
Description of the drawings
Fig. 1 is the utility model vehicle aftertreatment sensors simulator rack end line beam plug structure diagram.
Fig. 2 is the utility model vehicle aftertreatment sensors simulator heat examination harness end plug structure diagram.
Fig. 3 is the utility model vehicle aftertreatment sensors analog circuit figure.
Fig. 4 is resistance type sensor principle of simulation figure.
Fig. 5 is voltage sensor principle of simulation figure.
In figure：1, rack end harness connector plug, 2, heat examination harness end plug, 3, urea nozzle metering valve analog circuit, 4, urine
Plain pressure sensor analog circuit, 5, air bleeding valve analog circuit, 6, SCR inlet temperature Sensor Analog Relay System circuit, 7, the big temperature of SCR
Spend Sensor Analog Relay System circuit, 8, urea box heating valve analog circuit, 9, urea tube heat relay analog circuit, 10, urea pump
Heat relay analog circuit, 11, urea level analog circuit, 12, urea temperature analog circuit, 13, ECU diagnostic equipments, 14, electricity
Hinder case, 15, ECU power supplies/control system, 16, Engine ECU.
Specific implementation mode
The vehicle aftertreatment sensors simulator of the utility model can be adopted for temperature sensor and liquid level sensor
It is simulated with the resistance of corresponding resistance value；For electromagnetic relay and solenoid valve, the resistance that corresponding resistance value can be used is simulated；
For pressure sensor, corresponding voltage value can be used and simulated.By rack harness end plug 1, heat examination harness end plug 2,
Sensor Analog Relay System circuit is installed in control box, and each electronic component is linked together by wirning harness, after realizing vehicle
The simulation of device is managed, rack harness end plug 1 is as shown in Figure 1, for giving device power supply, plug model：Y2M-36ZJBM.Heat examination
Harness end plug 2 is as shown in Fig. 2, for connecting heat examination harness, plug model：Y2M-50ZKBM.Sensor Analog Relay System circuit and
Connection terminal with plug is as shown in figure 3, including resistor-type analog circuit：Urea nozzle metering valve analog circuit 3, exhaust
Valve analog circuit 5, SCR inlet temperature Sensor Analog Relay System circuit 6, SCR atmosphere temperature transducers analog circuit 7, urea box heating
Valve analog circuit 8, urea tube heating relay analog circuit 9, urea pump heating relay analog circuit 10, urea level simulation
Circuit 11 and urea temperature analog circuit 12.Voltage sensor analog circuit includes urea pressure sensor analog circuit 4.It is whole
Vehicle aftertreatment sensors simulator is small, easy for installation, at low cost, reliable operation, is not necessarily to daily maintenance, without additional behaviour
Make.For different sensors type, corresponding analog circuit is designed, makes each Sensor Analog Relay System state in the reasonable scope, avoids sending out
Occur influencing the failure of engine performance during motivation experiment, ensures the normal heat examination of engine.
Resistance value determines in the following manner in analog circuit：
By inquiring Engine ECU external circuits schematic diagram and technology requirement, each Sensor Analog Relay System mode is determined, simultaneously
The specific range of parameter is determined.
For resistance type sensor, resistance box is connected to ECU corresponding pins through harness, as shown in figure 4, by adjusting electricity
14 resistance value of case is hindered, while reading ECU16 with diagnostic equipment 13 and showing numerical value, until ECU display datas are in the centre of zone of reasonableness
Value records resistance box resistance value at this time.
For voltage sensor, ECU corresponding pins are connected to through harness after two resistance boxes are connected, as shown in figure 5,
It by adjusting separately two 14 resistance values of resistance box, while reading ECU16 with diagnostic equipment 13 and showing numerical value, until ECU display datas
Median in zone of reasonableness records two resistance box resistance values at this time.
After the completion of all parameters determine, the circuit board that resistance is welded is fixed in control box, while pin being connected
To the corresponding pin of heat examination harness end plug, increase fuse for electrical part in protection wire box at main power source in Wire harness box
It is not burned out.
Claims (4)
1. a kind of vehicle aftertreatment sensors simulator, it is characterised in that：Resistance type sensor analog circuit and voltage-type pass
Sensor analog circuit is installed on circuit board, and resistance type sensor analog circuit is made of a resistance, and resistance both ends pass through electricity
Harness connects two pins；Voltage sensor analog circuit is made of two resistance, and two resistance both ends and centre pass through electricity
Harness connects three pins, and the pin of each circuit connects heat examination harness end plug by wirning harness（2）Or rack end harness connector plug
（1）.
2. a kind of vehicle aftertreatment sensors simulator according to claim 1, it is characterised in that：The resistor-type passes
Sensor analog circuit includes：Urea nozzle metering valve analog circuit（3）, air bleeding valve analog circuit（5）, SCR inlet temperature sensing
Device analog circuit（6）, SCR atmosphere temperature transducer analog circuits（7）, urea box heating valve analog circuit（8）, urea tube heating
Relay analog circuit（9）, urea pump heat relay analog circuit（10）, urea level analog circuit（11）And urea temperature
Analog circuit（12）.
3. a kind of vehicle aftertreatment sensors simulator according to claim 1, it is characterised in that：The voltage-type passes
Sensor analog circuit includes urea pressure sensor analog circuit（4）.
4. a kind of vehicle aftertreatment sensors simulator according to claim 1, it is characterised in that：The heat examination harness
Hold plug（2）, rack end harness connector plug（1）It is installed in control box with circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721377390.XU CN207881949U (en) | 2017-10-24 | 2017-10-24 | A kind of vehicle aftertreatment sensors simulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721377390.XU CN207881949U (en) | 2017-10-24 | 2017-10-24 | A kind of vehicle aftertreatment sensors simulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207881949U true CN207881949U (en) | 2018-09-18 |
Family
ID=63499646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721377390.XU Active CN207881949U (en) | 2017-10-24 | 2017-10-24 | A kind of vehicle aftertreatment sensors simulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207881949U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365101A (en) * | 2020-03-13 | 2020-07-03 | 一汽解放汽车有限公司 | Method for measuring gas temperature at post-treatment rear end of engine |
| CN113034883A (en) * | 2021-02-26 | 2021-06-25 | 广西玉柴机器股份有限公司 | Method and device for realizing virtual post-processing system platform |
-
2017
- 2017-10-24 CN CN201721377390.XU patent/CN207881949U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365101A (en) * | 2020-03-13 | 2020-07-03 | 一汽解放汽车有限公司 | Method for measuring gas temperature at post-treatment rear end of engine |
| CN113034883A (en) * | 2021-02-26 | 2021-06-25 | 广西玉柴机器股份有限公司 | Method and device for realizing virtual post-processing system platform |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 116600 No. 117 Huanghai Middle Road, Dalian Economic and Technological Development Zone, Liaoning Province Patentee after: FAW Jiefang Dalian Diesel Engine Co., Ltd. Address before: 116000 No. 117 Huanghai Middle Road, Dalian Development Zone, Liaoning Province Patentee before: Deutz Diesel Engine Co. Ltd. (Dalian) |