CN204348128U - Portable multi-function vehicle failure setting, diagnostic teaching device - Google Patents
Portable multi-function vehicle failure setting, diagnostic teaching device Download PDFInfo
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- CN204348128U CN204348128U CN201420806588.5U CN201420806588U CN204348128U CN 204348128 U CN204348128 U CN 204348128U CN 201420806588 U CN201420806588 U CN 201420806588U CN 204348128 U CN204348128 U CN 204348128U
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Abstract
Portable multi-function vehicle failure setting, diagnostic teaching device, it is characterized in that: comprise two ECM connectors be connected with automobile ECM, the whole wire harness wire harness one to one with automobile ECM is provided with between two ECM connectors, arbitrary circuit of wire harness is provided with switch, relay, resistance in series and parallel resistance formation control circuit, realize the open circuit to wire harness corresponding circuits, short circuit, resistance increase function, the open circuit of circuit, short circuit, circuit resistance increase function and are controlled by master cock.The design is connected in series a control circuit at former car ECU with on the connector of the rat tail of former car ECU, do not destroy the arbitrary facility of former car, just can realize the facilitation that complete vehicle fault is arranged, and easy to operate, cheap for manufacturing cost, this design concept is applicable to all car systems fault verification.This device small volume and less weight, simple to operate, with low cost, reliable operation, intuitive and easy to learn.
Description
Technical field
The design relates to portable multi-function vehicle failure setting, diagnostic teaching device, belongs to specialized education's teaching field and automobile teaching aid production field.
Background technology
In current " automotive check and fault diagnosis " course teaching, to the method that the setting of " trouble spot " is taked be: by artificial destruction sensor, actuator element, or realize the setting of fault by methods such as artificial destruction circuits (doing disconnected, short circuit, resistance in series process to circuit).Long-term setting then causes the artificial damage of vehicle harness, sensor, actuator element, and vehicle service life shortens, and fault verification is limited in scope, and brings very big inconvenience to practical teaching.
The auto repair that current school uses is correlated with practical training stand, buying expenses high (hundreds thousand of unit), though fault verification is convenient, but practical training stand heaviness is abstract, function singleness, real vehicle, directly perceived, multi-functional onsite teaching can not be realized, cause the cognition of student to the formation of vehicle trouble and diagnosis still very difficult, do not reach the teaching efficiency of anticipation.
Summary of the invention
For the deficiencies in the prior art, the object of the design is to provide portable multi-function vehicle failure setting, diagnostic teaching device, the connector of the rat tail of former car ECM is connected in series a control circuit, do not destroy the arbitrary facility of former car, just can realize the facilitation that complete vehicle fault is arranged, and easy to operate, cheap for manufacturing cost, this design concept is applicable to all car systems fault verification.
For achieving the above object, the design is realized by following technological means:
Portable multi-function vehicle failure setting, diagnostic teaching device, it is characterized in that: comprise two ECM connectors 1 be connected with automobile ECM, be provided with between two ECM connectors 1 and whole wire harness of automobile ECM wire harness 2 one to one, each circuit of wire harness 2 is provided with switch, relay, resistance in series and parallel resistance formation control circuit 3, realize the open circuit to wire harness corresponding circuits, short circuit, resistance increase function, the open circuit of circuit, short circuit, circuit oxidation resistance increase function and are controlled by master cock 5.
Further:
Described portable multi-function vehicle failure setting, diagnostic teaching device, is characterized in that: described master cock 5 is divided into two position switch, three position switch, matches with variable resistor the three position switch three types used.
Described portable multi-function vehicle failure setting, diagnostic teaching device, is characterized in that: described two position switch: left position is normal position, and right position is abort situation; When switch closes, system is normal; When the switches are opened, connect the circuit breaker of this switch, this type of switch can only the design of the normal and fault of completion system; Described three position switch: meta is normal position, left position and right position are all abort situation; When switch is in left position or right position, primary circuit or seal in resistance or open circuit or short circuit, this switch can complete the design of various faults; Described three position switch used that match with variable resistor: left position is normal position, and meta is open circuit fault position, right position is serial connection variable resistor abort situation; Variable resistor resistance size is controlled by variable resistor knob 6.
Described portable multi-function vehicle failure setting, diagnostic teaching device, is characterized in that: described two position switch, three position switch, three position switch, the variable resistor knob used that to match with variable resistor are ordered on control enclosure 4.
Described portable multi-function vehicle failure setting, diagnostic teaching device, is characterized in that: described two position switch are 32, and three position switch are 13, matching with variable resistor three position switch used is 9, number consecutively is 1-54, and variable resistor knob is 9, and number consecutively is 1--9.
Described portable multi-function vehicle failure setting, diagnostic teaching device, is characterized in that: described two position switch colors are for green, and three position switch colors be redness, and matching the color of three position switch that use and variable resistor knob with variable resistor is black.
The invention has the beneficial effects as follows: the portable multi-function vehicle failure setting of the design, diagnostic teaching device, the connector of the rat tail of former car ECM is connected in series a control circuit, do not destroy the arbitrary facility of former car, just can realize the facilitation that complete vehicle fault is arranged, and it is easy to operate, cheap for manufacturing cost, this design concept is applicable to all car systems fault verification.
Accompanying drawing explanation
Fig. 1 is the design's structure theory of constitution figure;
Fig. 2 is structure composition schematic diagram;
Fig. 3 is that camshaft solenoid valve failure arranges circuit diagram;
Fig. 4 camshaft solenoid valve bonding fault arranges circuit diagram;
Fig. 5 camshaft-signal sensor fault verification circuit diagram;
Fig. 6 crankshaft position sensor fault verification circuit diagram;
Fig. 7 injector failures arranges circuit diagram;
Fig. 8 accelerator pedal position sensor fault verification circuit diagram;
The too low fault verification circuit diagram of Fig. 9 accelerator pedal position sensor circuit voltage;
One of Figure 10 air throttle actuator failures arranges circuit diagram;
Two fault verification circuit diagrams of Figure 11 air throttle actuator.
Embodiment
Below in conjunction with Figure of description, illustrating is further described accident design principle.
As shown in Figure 3, camshaft solenoid valve input circuit is connected two position switch K, and circuit is normal when the switch is closed; When the switches are opened, ECM(is also known as engine control module, instruction down together) is interrupted because of circuit breaker, namely camshaft solenoid valve can not receive the instruction of ECM, now, solenoid valve is in original position, can not realize the adjustment to valve timing, causing trouble produces, in the RAM of this failure message typing ECM.
As shown in Figure 4, tandem tap in camshaft solenoid valve bonding circuit, circuit is normal when the switch is closed; When the switches are opened, solenoid valve can receive the instruction of ECM, but electromagnetic valve coil no current passes through, coil effectively can not set up (generation) magnetic field, and solenoid valve can not work, and cannot realize adjustment valve timing, causing trouble produces, in the RAM of simultaneous faults typing ECM.
As shown in Figure 5, arrange three position switch K in camshaft-signal sensor circuit, K is positioned at meta, and circuit is normal; K is positioned at left position, signal circuit open circuit, and ECM accepts the signal interruption (for 0V) of camshaft sensing, ECM record trouble information; When K is positioned at right position, camshaft-signal sensor 5V Vc circuit and signal short circuit, now signal voltage is that 5V(exceedes setting), ECM record trouble information.
Illustrate: when Vc 5V circuit and signal short circuit, circuit design seals in the resistance of 10 Ω, its objective is that to prevent electric current excessive, play a protective role.
As shown in Figure 6, three position switch of connecting in crankshaft position sensor circuit (be its right position and variable resistor knob match three position switch used), when switch is positioned at left position, circuit is normal; When switch is positioned at meta, signal circuit open circuit, sensor signal is interrupted, and ECM records transducing signal fault; When switch is positioned at right position, signal circuit seals in a variable resistor, now adjusts variable-resistance resistance, the interference of the amplitude to bent axle transducing signal can be realized, when resistance reaches certain value, the transducing signal that ECM accepts exceedes setting, thus record trouble information.
The utility model install operation process is as follows:
(1) vehicle ignition switch is allocated to " OFF " position, disconnects battery terminal negative;
(2) ECM connector is pulled up; The corresponding connector connecting the design;
(3) battery terminal negative is connected;
(4) ignition switch is allocated to " ON " position;
(5) fault is set, starts teaching.
Be concrete operations case below: " X1 " " X2 " mentioned in practical operation case represents two ECM connectors be connected with automobile ECM respectively: the little connector of 56 pin and the large connector of 73 pins.
(1) practical operation case one: injector failures (this fault is set to No. 15 two right positions of position switch in the design).Its circuit theory diagrams as shown in Figure 7.
1. fault is set: No. 15 two position switch are pushed abort situation (right position) by Stochastic choice;
2. malfunction coefficient: P0203 fuel injector 3 control circuit; (this step is with the use of automobile fault diagnostic apparatus, lower same)
3. phenomenon of the failure: engine is shaken is abnormal;
4. check fault: close ignition switch-------multimeter and prolonged type T-shaped line contact pin---contrast circuit diagram inserts the line pulled up and inserts and corresponding sensor interface terminal---display resistance is infinitely great (being set to open circuit with fault match) to disconnect battery terminal negative; After diagnosis terminates, the position of the switch is recovered normal.
5. fault verification principle:
Control module makes each cylinder obtain suitable fuel injection pulse, and the solid-state device of control module driver makes control circuit bonding, and the time length of bonding determines distributive value, when bonding and fuel injection beginning, and when K switch 15 is positioned at left position, bonding circuit is normal; When K switch 15 is positioned at right position, fuel injector bonding circuit breaker, the solid-state device of control module driver can not complete injector control circuit bonding, fuel injector fuel cut-off, now control module detects that driver command status voltage is incorrect, will arrange an injector control circuit diagnostic trouble code and P0203.
(2) practical operation case two (1): accelerator pedal position sensor fault (being set to No. 41 three right positions of position switch).Its circuit theory diagrams as shown in Figure 8.
1. fault is set: No. 41 three position switch are pushed abort situation (right position) by Stochastic choice;
2. malfunction coefficient: P2122 accelerator pedal position sensor 2 circuit voltage is too low;
3. phenomenon of the failure: engine seems normal, but accelerator pedal is reactionless, or claim bad Acceleration;
4. check fault: close ignition switch----disconnect battery terminal negative---multimeter and prolonged type T-shaped line contact pin---contrast circuit diagram to insert the line pulled up and insert X1(20-40) resistance is 10 Ω (should be infinity) between terminal; After diagnosis terminates, the position of the switch is recovered normal.
5. fault verification principle: (as shown in Figure 8)
Accelerator pedal position sensor 1,2 is positioned at pedal assembly, each sensor has a 5V potential circuit, a low flat reference circuit, a signal circuit, be positioned at two processor monitoring system data of engine ECM, each signal circuit provides the signal voltage of pedal displacement relative scale for processor, and processor detects data to confirm that whether accelerator pedal position sensor calculated value is correct.
When switch 41 is positioned at right position, ECM-X1-20 and B107-3 conducting, (note: B107 is accelerator pedal position sensor code name, accelerator pedal position sensor has another name called accelerator pedal sensor) ECM-X1-40 terminal signals voltage is 0, processor detects that the calculated value of accelerator pedal sensor is incorrect, stores diagnostic trouble code P2122.
(3) practical operation case two (2): accelerator pedal position sensor fault (being set to No. 41 three left positions of position switch), its circuit theory diagrams as shown in Figure 9.
1. fault is set: No. 41 three position switch are pushed abort situation (left position) by Stochastic choice;
2. malfunction coefficient: P2127 accelerator pedal position sensor 1 circuit voltage is too low;
3. phenomenon of the failure: engine seems normal, but bad Acceleration when travelling;
4. check fault: close ignition switch----disconnect battery terminal negative---multimeter and prolonged type T-shaped line contact pin---contrast circuit diagram to insert the line pulled up and insert X1(20-42) resistance is 10 Ω (should be infinity) between terminal; After diagnosis terminates, the position of the switch is recovered normal.
5. fault verification principle: (as shown in Figure 9)
Accelerator pedal position sensor 1,2 is positioned at pedal assembly, each sensor has a 5V potential circuit, a low flat reference circuit, a signal circuit, be positioned at two processor monitoring system data of engine ECM, each signal circuit provides the signal voltage of pedal displacement relative scale for processor, and processor detects data to confirm that whether accelerator pedal position sensor calculated value is correct.
When switch 41 is positioned at left position, ECM-X1-20 and B107-6 conducting, ECM-X1-42 terminal signals voltage is 0, and processor detects that the calculated value of accelerator pedal sensor is incorrect, stores diagnostic trouble code P2127.
(4) practical operation case three (1): air throttle actuator failures (being set to No. 53 three position switch metas), circuit theory as shown in Figure 10.
1. fault is set: No. 53 three position switch are pushed abort situation (centre position) by Stochastic choice;
2. malfunction coefficient: P2101 air throttle actuator position performance;
3. phenomenon of the failure: bad Acceleration, engine is shaken, difficulty in starting;
4.--------multimeter and prolonged type T-shaped line------corresponding terminal measuring resistance (" 69 " number terminal on sensor interface on B terminal and X2) looked for by contrast the circuit diagram----infinity (should be zero) of pulling up the sensor interface that X1, X2 line is inserted and air throttle is corresponding of ECU that disconnects battery terminal negative that checks fault: close ignition switch; After diagnosis terminates, the position of the switch is recovered normal.
5. fault verification principle: (as shown in Figure 10)
ECM applies variable voltage, to control air throttle to air throttle actuator (TAC) motor.ECM monitoring activates dutycycle needed for air throttle, and monitoring TP sensor 1 and 2, to determine throttle position.When red switch 53 is positioned at meta, Q38-B and ECM-X2-69 open circuit, throttle motor cannot accept ECM instruction, produces diagnostic trouble code P2101.
(5) practical operation case three (2): air throttle actuator (being set to No. 53 three right positions of position switch), faulty circuit principle as shown in figure 11.
1. fault is set: No. 53 three position switch are pushed abort situation (right position) by Stochastic choice;
2. malfunction coefficient: P2101 air throttle actuator position performance;
3. phenomenon of the failure: bad Acceleration, engine is shaken, difficulty in starting;
4. check fault: close ignition switch--------multimeter and prolonged type T-shaped line---are pulled up the sensor interface that X1, X2 line is inserted and air throttle is corresponding of ECU---corresponding terminal measuring resistance (" 69 " number terminal on sensor interface on B terminal and X2) looked for by contrast circuit diagram----are had resistance (should be zero) to disconnect battery terminal negative; After diagnosis terminates, the position of the switch is recovered normal.
5. fault verification principle: (as shown in figure 11)
ECM applies variable voltage, to control air throttle to air throttle actuator (TAC) motor.ECM monitoring activates dutycycle needed for air throttle, and monitoring TP sensor 1 and 2, to determine throttle position.When red switch 53 is positioned at right position, between variable resistor series connection access Q38-B and ECM-X2-69 in circuit, throttle motor cannot accept ECM instruction, produces diagnostic trouble code P2101.
Illustrate: " X1 " " X2 " mentioned in above-mentioned five typical practical operation cases represents two ECM connectors be connected with automobile ECM respectively: the little connector of 56 pin and the large connector of 73 pins.
More than show and describe the ultimate principle of the design, principal character and advantage.The technician of the industry should understand, the design is not restricted to the described embodiments, the principle that the design is just described described in above-described embodiment and instructions, under the prerequisite not departing from the design's spirit and scope, the design also has various changes and modifications, such as: at present research and develop sample circuit control box be manipulated by switch, intend from now on existing sample basis, switch used for circuit control box is replaced by relay, can long-distance intelligent control be realized.It is imagined substantially or mentality of designing is: notebook computer sends wireless signal, and-----wireless receiver Received signal strength----serial ports controller pilot relay----realize inputs vehicle ECU, the interference of output signal, reaches the remote control object that vehicle trouble is arranged.These changes and improvements all fall within the scope of claimed the design.The claimed scope of the design is defined by appending claims and equivalent thereof.
Claims (6)
1. portable multi-function vehicle failure setting, diagnostic teaching device, it is characterized in that: comprise two ECM connectors be connected with automobile ECM, the whole wire harness wire harness one to one with automobile ECM is provided with between two ECM connectors, arbitrary circuit of wire harness is provided with switch, relay, resistance in series and parallel resistance formation control circuit, realize the open circuit to wire harness corresponding circuits, short circuit, resistance increase function, the open circuit of circuit, short circuit, circuit resistance increase function and are controlled by master cock.
2. portable multi-function vehicle failure setting as claimed in claim 1, diagnostic teaching device, is characterized in that: described master cock is divided into two position switch, three position switch, matches with variable resistor the three position switch three types used.
3. portable multi-function vehicle failure setting as claimed in claim 2, diagnostic teaching device, is characterized in that: described two position switch: left position is normal position, and right position is abort situation; When switch closes, system is normal; When the switches are opened, connect the circuit breaker of this switch, this type of switch can only the design of the normal and fault of completion system; Described three position switch: meta is normal position, left position and right position are all abort situation; When switch is in left position or right position, primary circuit or seal in resistance or open circuit or short circuit, this switch can complete the design of various faults; Described three position switch used that match with variable resistor: left position is normal position, and meta is open circuit fault position, right position is serial connection variable resistor abort situation; Variable resistor resistance size is controlled by variable resistor knob.
4. portable multi-function vehicle failure setting as claimed in claim 3, diagnostic teaching device, is characterized in that: described two position switch, three position switch, three position switch, the variable resistor knob used that to match with variable resistor are ordered on control enclosure.
5. portable multi-function vehicle failure setting as claimed in claim 4, diagnostic teaching device, it is characterized in that: described two position switch are 32, three position switch are 13, matching with variable resistor three position switch used is 9, number consecutively is 1-54, variable resistor knob is 9, and number consecutively is 1--9.
6. portable multi-function vehicle failure setting as claimed in claim 5, diagnostic teaching device, it is characterized in that: described two position switch colors are for green, three position switch colors are red, and matching the color of three position switch that use and variable resistor knob with variable resistor is black.
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| CN201420806588.5U CN204348128U (en) | 2014-12-19 | 2014-12-19 | Portable multi-function vehicle failure setting, diagnostic teaching device |
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| CN201420806588.5U CN204348128U (en) | 2014-12-19 | 2014-12-19 | Portable multi-function vehicle failure setting, diagnostic teaching device |
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| CN204348128U true CN204348128U (en) | 2015-05-20 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106228894A (en) * | 2016-09-29 | 2016-12-14 | 上海景格信息科技有限公司 | A kind of teaching intake air temperature sensor |
| CN106448317A (en) * | 2016-08-31 | 2017-02-22 | 广州益业机电设备科技有限公司 | Breakdown simulation external circuit for automobile teaching and breakdown arranging platform |
| CN107240323A (en) * | 2017-06-30 | 2017-10-10 | 北京华奥汽车服务股份有限公司 | A kind of control unit for vehicle fault simulator and its control method |
| CN108053710A (en) * | 2018-01-16 | 2018-05-18 | 重庆科技学院 | Automobile signal light teaching experimental base failure set system |
| CN109637309A (en) * | 2019-01-08 | 2019-04-16 | 华中农业大学 | A kind of circuit failure simulation experimental system |
| CN112037603A (en) * | 2020-09-15 | 2020-12-04 | 广州车拉夫汽车科技有限公司 | Automobile teaching system |
| CN113985172A (en) * | 2021-10-26 | 2022-01-28 | 盐城工学院 | Make things convenient for automobile inspection box of teaching experiment |
-
2014
- 2014-12-19 CN CN201420806588.5U patent/CN204348128U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106448317A (en) * | 2016-08-31 | 2017-02-22 | 广州益业机电设备科技有限公司 | Breakdown simulation external circuit for automobile teaching and breakdown arranging platform |
| CN106228894A (en) * | 2016-09-29 | 2016-12-14 | 上海景格信息科技有限公司 | A kind of teaching intake air temperature sensor |
| CN107240323A (en) * | 2017-06-30 | 2017-10-10 | 北京华奥汽车服务股份有限公司 | A kind of control unit for vehicle fault simulator and its control method |
| CN108053710A (en) * | 2018-01-16 | 2018-05-18 | 重庆科技学院 | Automobile signal light teaching experimental base failure set system |
| CN109637309A (en) * | 2019-01-08 | 2019-04-16 | 华中农业大学 | A kind of circuit failure simulation experimental system |
| CN112037603A (en) * | 2020-09-15 | 2020-12-04 | 广州车拉夫汽车科技有限公司 | Automobile teaching system |
| CN113985172A (en) * | 2021-10-26 | 2022-01-28 | 盐城工学院 | Make things convenient for automobile inspection box of teaching experiment |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20191219 |