CN112083715A - Method for removing fault code by GPF - Google Patents
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- CN112083715A CN112083715A CN202011059463.7A CN202011059463A CN112083715A CN 112083715 A CN112083715 A CN 112083715A CN 202011059463 A CN202011059463 A CN 202011059463A CN 112083715 A CN112083715 A CN 112083715A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/007—Arrangements to check the analyser
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Abstract
The invention relates to the technical field of PVE (polyvinyl fluoride) testing, and particularly discloses a method for removing fault codes during GPF (general purpose factor) manufacturing, which comprises the following steps of firstly, disconnecting a GPF upstream pressure sensor and a GPF downstream pressure sensor from an ECU (electronic control unit), and accessing a function signal generator for simulating the pressure of the GPF upstream pressure sensor and the pressure of the GPF downstream pressure sensor to the input end of the ECU; a signal input step, namely enabling the vehicle to enter a power-on state, and adjusting the dual-channel output voltage of the function signal generator to enable the pressure values of the GPF upstream pressure sensor and the GPF downstream pressure sensor read by the PVE test computer to be the same; and the operation step is that an engine of the vehicle is started to run under a certain working condition, and the GPF is created to completely remove the fault code. By adopting the technical scheme of the invention, the GPF does not need to be disassembled and replaced by the unloaded GPF, the fault of the GPF can be completely removed, and the operation is more convenient.
Description
Technical Field
The invention relates to the technical field of PVE (physical layer inspection) testing, in particular to a method for removing fault codes during GPF (general purpose function) manufacturing.
Background
The mass Production Vehicle Evaluation (PVE) test is an OBD system certification project newly added in the national VI standard and mainly verifies whether the vehicle meets the requirements of various protocols of the OBD system. Among them, the PVE J2 test is one of the technical difficulties of the whole PVE test. At present, the emission standard of the sixth stage of the country is in trial, GPF (particle trap) is configured in vehicle models of many enterprises, the influence on emission is large, and the relevant fault of the GPF is a key verification item. In d.8.1.5.10gpf system function verification in the light vehicle national six standards implementation detailed rule, it is pointed out that: the vehicle should be able to monitor for a fault with GPF completely removed without emission verification. As can be seen from the regulations, the GPF complete removal fault (P226D) is to be monitored, and the current verification of the GPF complete removal fault can only be created by detaching and replacing the GPF with an empty GPF, which requires placing the vehicle on a lifting machine and reinstalling the original GPF after verification, which is time-consuming, labor-consuming and inconvenient. Therefore, there is a need for a more convenient method to make a GPF completely remove the fault (P226D) and thereby improve the efficiency of PVE J2 testing.
Disclosure of Invention
In order to solve the technical problem that the verification method for completely removing the fault of the GPF is inconvenient to operate, the invention provides a method for removing the fault code of the GPF.
The basic scheme of the invention is as follows:
a method for making a GPF to remove fault codes comprises the following steps:
the method comprises the following steps that firstly, a vehicle is in a completely power-off state, the connection between a GPF upstream pressure sensor and a GPF downstream pressure sensor and an ECU is disconnected, and a function signal generator used for simulating the pressure of the GPF upstream pressure sensor and the pressure of the GPF downstream pressure sensor is connected to the input end of the ECU;
a signal input step, namely enabling the vehicle to enter a power-on state, and adjusting the dual-channel output voltage of the function signal generator to enable the pressure values of the GPF upstream pressure sensor and the GPF downstream pressure sensor read by the PVE test computer to be the same;
and the operation step is that an engine of the vehicle is started to run under a certain working condition, and the GPF is created to completely remove the fault code.
The principle and the beneficial effects of the basic scheme are as follows: the monitoring strategy of the GPF fault code is to monitor the pressure difference between the upstream and the downstream of the GPF, and if the pressure difference is lower than a limit value, the fault is judged to occur. When the GPF fault code is lost, the upstream pressure and the downstream pressure of the GPF should be the same or have small difference, so the GPF fault code can be created only by adjusting the upstream pressure and the downstream pressure of the GPF to be the same through simulation of a signal generator.
Compared with the prior art, the technical scheme has the advantages that the GPF does not need to be detached or replaced by an unloaded GPF, the GPF can be completely removed, and the operation is more convenient.
Further, in the voltage adjusting step, if the GPF upstream pressure sensor and the GPF downstream pressure sensor are of the same type, the two channels of the function signal generator are directly adjusted to be the same direct-current voltage output.
Has the advantages that: when the GPF upstream pressure sensor and the GPF downstream pressure sensor are of the same type, the characteristic curves of the GPF upstream pressure sensor and the GPF downstream pressure sensor are the same, so that the same direct-current voltage can be adjusted to ensure that the pressures of the GPF upstream pressure sensor and the GPF downstream pressure sensor are the same.
Further, the voltage adjusting step also comprises a pressure value visible judging step, and whether the pressure values of the GPF upstream pressure sensor and the GPF downstream pressure sensor can be read or not is checked on a PVE testing computer.
Has the advantages that: the output voltage of the function signal generator can be adjusted conveniently according to different conditions.
Further, the voltage adjusting step further includes a channel adjusting step,
a pressure value visible judgment step, namely checking whether the pressure values of the GPF upstream pressure sensor and the GPF downstream pressure sensor can be read or not on a PVE test computer, and if the pressure values can be read, executing a channel regulation step;
and a channel adjusting step, namely changing the output voltages of the two channels of the function signal generator, so that the pressure values of the GPF upstream pressure sensor and the GPF downstream pressure sensor read on the PVE test computer are the same.
Has the advantages that: by the method, the pressure values of the GPF upstream pressure sensor and the GPF downstream pressure sensor read by the PVE test computer are the same, so that the condition that the GPF completely removes the fault code is achieved, and the GPF completely removing fault code is successfully created.
Further, the voltage regulation step also comprises a characteristic curve adjustment step;
a pressure value visible judgment step, namely checking whether the pressure values of the GPF upstream pressure sensor and the GPF downstream pressure sensor can be read or not on a PVE test computer, and if the pressure values cannot be read, executing a characteristic curve adjustment step;
and a characteristic curve adjusting step, namely adjusting the output voltages of the two channels of the function signal generator according to the pressure characteristic curve of the GPF pressure sensor, so that the pressure values of the GPF upstream pressure sensor and the GPF downstream pressure sensor are the same.
Has the advantages that: in this way, the pressure values of the GPF upstream pressure sensor and the GPF downstream pressure sensor can be made the same, so as to reach the condition that the GPF completely removes the fault code, and successfully create the GPF completely removed fault code.
Further, the initial step further includes interfacing the PVE test computer with the OBD of the vehicle.
Has the advantages that: the PVE testing computer is connected with an OBD interface of the vehicle, so that the PVE testing computer can read data received by the ECU conveniently.
Further, the initial step further comprises the step of connecting an ECU adapter box between the ECU and the onboard harness, wherein the ECU adapter box comprises a GPF upstream pressure sensor pin and a GPF downstream pressure sensor pin, and the positive poles of the two channels of the function signal generator are respectively connected with the GPF upstream pressure sensor pin and the GPF downstream pressure sensor pin.
Has the advantages that: ECU changes line box and conveniently changes signal line between pencil and the ECU on the car
Further, the GPF upstream pressure sensor pin includes a GPF upstream pressure sensor interface 2 and a GPF upstream pressure sensor interface 3;
the GPF upstream pressure sensor interface 2 is connected to the ECU, and the GPF upstream pressure sensor interface 3 is a interface for connecting the GPF upstream pressure sensor interface 1 and the GPF downstream pressure sensor interface 2;
the GPF downstream pressure sensor pin comprises a GPF downstream pressure sensor interface 2 and a GPF downstream pressure sensor interface 3;
the GPF downstream pressure sensor interface 2 is connected to the ECU, and the GPF downstream pressure sensor interface 3 is a interface for connecting the GPF downstream pressure sensor interface 1 and the GPF downstream pressure sensor interface 2.
Has the advantages that: and different interfaces are connected to realize conversion of different signals.
Further, in the initial step, the connection between the GPF upstream pressure sensor and the GPF downstream pressure sensor and the ECU is disconnected in a manner of pulling out the GPF upstream pressure sensor interface 3 and the GPF downstream pressure sensor interface 3 on the ECU adapter.
The vehicle-mounted wiring harness disconnection device has the advantages that the connection between the GPF upstream pressure sensor and the GPF downstream pressure sensor and the ECU can be disconnected without damaging the original vehicle-mounted wiring harness, and the operation is more convenient.
Furthermore, the anodes of the two channels of the function signal generator are respectively connected with the GPF upstream pressure sensor interface 2 and the GPF downstream pressure sensor interface 2, and the cathodes of the two channels of the function signal generator are respectively connected with the ground pin of the vehicle body.
Has the advantages that: the signals sent by the original signal interference function signal generators of the GPF upstream pressure sensor and the GPF downstream pressure sensor are effectively avoided.
Drawings
FIG. 1 is a partial diagram of an embodiment of a method for removing fault codes in a GPF;
FIG. 2 is a layout diagram of an embodiment of a method for GPF to remove fault codes;
FIG. 3 is a flowchart of an embodiment of a method for removing fault codes in a GPF.
Detailed Description
The following is further detailed by way of specific embodiments:
examples
A method for making GPF to remove fault codes, as shown in fig. 1, includes the following steps:
the method comprises the following steps of initially connecting an ECU adapter box between the ECU and an on-board harness, and connecting a PVE test computer with an OBD interface of a vehicle, wherein the on-board harness comprises a harness used for connecting a GPF upstream pressure sensor and a GPF downstream pressure sensor. As shown in fig. 2, the GPF upstream pressure sensor and the GPF downstream pressure sensor are used to detect pressure signals upstream and downstream of the GPF, respectively.
As shown in fig. 3, the ECU adapter includes a GPF upstream pressure sensor pin and a GPF downstream pressure sensor pin, where the GPF upstream pressure sensor pin includes a GPF upstream pressure sensor interface 1, a GPF upstream pressure sensor interface 2, and a GPF upstream pressure sensor interface 3, the GPF upstream pressure sensor interface 1 is connected to a harness connected to the GPF upstream pressure sensor, the GPF downstream pressure sensor interface 2 is connected to the ECU, and the GPF upstream pressure sensor interface 3 is a interface connected to the GPF upstream pressure sensor interface 1 and the GPF downstream pressure sensor interface 2; the GPF downstream pressure sensor pin comprises a GPF downstream pressure sensor interface 1, a GPF downstream pressure sensor interface 2 and a GPF downstream pressure sensor interface 3, the GPF downstream pressure sensor interface 1 is connected to a wiring harness connected with the GPF downstream pressure sensor, the GPF downstream pressure sensor interface 2 is connected to the ECU, and the GPF downstream pressure sensor interface 3 is a interface connected with the GPF downstream pressure sensor interface 1 and the GPF downstream pressure sensor interface 2; the body ground pin comprises a body ground pin interface 1, a body ground pin interface 2 and a body ground pin interface 3.
The initial steps further include: the vehicle is in a completely power-off state, and the ECU is respectively disconnected with the GPF upstream pressure sensor and the GPF downstream pressure sensor on the ECU adapter box; specifically, the GPF upstream pressure sensor interface 3 and the GPF downstream pressure sensor interface 3 on the ECU adapter box are pulled out.
And a signal input step, wherein the anodes of two channels of the function signal generator are respectively connected with a GPF upstream pressure sensor pin and a GPF downstream pressure sensor pin, and the cathodes of the two channels of the function signal generator are both connected with a vehicle body ground pin. The method specifically comprises the following steps: the anodes of the two channels of the function signal generator are respectively connected with the GPF upstream pressure sensor interface 2 and the GPF downstream pressure sensor interface 2, and the cathodes of the two channels of the function signal generator are both connected with the vehicle body ground pin interface 3.
In order to avoid the interference of the original signals of the GPF upstream pressure sensor and the GPF downstream pressure sensor with the signals sent by the function signal generator, the anodes of the two channels of the function signal generator are respectively connected with the GPF upstream pressure sensor interface 2 and the GPF downstream pressure sensor interface 2.
And a voltage regulation step, namely enabling the vehicle to enter a power-on state, and regulating the dual-channel output voltage of the function signal generator, so that the pressure values of the GPF upstream pressure sensor and the GPF downstream pressure sensor read by the PVE test computer are the same. The voltage regulation step specifically comprises a pressure value visible judgment step, a channel regulation step and a characteristic curve regulation step, and specifically comprises the following steps:
a pressure value visible judgment step, namely checking whether the pressure values of the GPF upstream pressure sensor and the GPF downstream pressure sensor can be read or not on a PVE test computer, and if the pressure values can be read, executing a channel regulation step; if not, executing the characteristic curve adjusting step.
And a channel adjusting step, namely changing the output voltages of the two channels of the function signal generator, so that the pressure values of the GPF upstream pressure sensor and the GPF downstream pressure sensor read on the PVE test computer are the same.
And a characteristic curve adjusting step, namely adjusting the output voltages of the two channels of the function signal generator according to the pressure characteristic curve of the GPF pressure sensor, so that the pressure values of the GPF upstream pressure sensor and the GPF downstream pressure sensor are the same.
In the voltage adjusting step, if the GPF upstream pressure sensor and the GPF downstream pressure sensor are of the same type, the two channels of the function signal generator are directly adjusted to be the same direct-current voltage output.
And the operation step is that an engine of the vehicle is started to run under a certain working condition, and the GPF is created to completely remove the fault code.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. A method for making a GPF to remove fault codes is characterized by comprising the following steps:
the method comprises the following steps that firstly, a vehicle is in a completely power-off state, the connection between a GPF upstream pressure sensor and a GPF downstream pressure sensor and an ECU is disconnected, and a function signal generator used for simulating the pressure of the GPF upstream pressure sensor and the pressure of the GPF downstream pressure sensor is connected to the input end of the ECU;
a signal input step, namely enabling the vehicle to enter a power-on state, and adjusting the dual-channel output voltage of the function signal generator to enable the pressure values of the GPF upstream pressure sensor and the GPF downstream pressure sensor read by the PVE test computer to be the same;
and the operation step is that an engine of the vehicle is started to run under a certain working condition, and the GPF is created to completely remove the fault code.
2. The method of claim 1, wherein the GPF removes the fault code by: in the voltage adjusting step, if the GPF upstream pressure sensor and the GPF downstream pressure sensor are of the same type, the two channels of the function signal generator are directly adjusted to be the same direct-current voltage output.
3. The method of claim 2, wherein the GPF removes the fault code by: the voltage regulation step also comprises a pressure value visible judgment step, and whether the pressure values of the GPF upstream pressure sensor and the GPF downstream pressure sensor can be read or not is checked on a PVE test computer.
4. The method of claim 3, wherein the GPF removes the fault code by: the voltage regulation step further comprises a channel regulation step,
a pressure value visible judgment step, namely checking whether the pressure values of the GPF upstream pressure sensor and the GPF downstream pressure sensor can be read or not on a PVE test computer, and if the pressure values can be read, executing a channel regulation step;
and a channel adjusting step, namely changing the output voltages of the two channels of the function signal generator, so that the pressure values of the GPF upstream pressure sensor and the GPF downstream pressure sensor read on the PVE test computer are the same.
5. The method of claim 3, wherein the GPF removes the fault code by: the voltage regulation step also comprises a characteristic curve adjustment step;
a pressure value visible judgment step, namely checking whether the pressure values of the GPF upstream pressure sensor and the GPF downstream pressure sensor can be read or not on a PVE test computer, and if the pressure values cannot be read, executing a characteristic curve adjustment step;
and a characteristic curve adjusting step, namely adjusting the output voltages of the two channels of the function signal generator according to the pressure characteristic curve of the GPF pressure sensor, so that the pressure values of the GPF upstream pressure sensor and the GPF downstream pressure sensor are the same.
6. The method of claim 1, wherein the GPF removes the fault code by: the initial step further includes interfacing the PVE test computer with the OBD of the vehicle.
7. The method of claim 1, wherein the GPF removes the fault code by: the initial step further comprises the step of connecting an ECU adapter box between the ECU and the onboard harness, wherein the ECU adapter box comprises a GPF upstream pressure sensor pin and a GPF downstream pressure sensor pin, and the anodes of two channels of the function signal generator are respectively connected with the GPF upstream pressure sensor pin and the GPF downstream pressure sensor pin.
8. The method of claim 7, wherein the GPF removes the fault code by: the GPF upstream pressure sensor pin comprises a GPF upstream pressure sensor interface 2 and a GPF upstream pressure sensor interface 3;
the GPF upstream pressure sensor interface 2 is connected to the ECU, and the GPF upstream pressure sensor interface 3 is a interface for connecting the GPF upstream pressure sensor interface 1 and the GPF downstream pressure sensor interface 2;
the GPF downstream pressure sensor pin comprises a GPF downstream pressure sensor interface 2 and a GPF downstream pressure sensor interface 3;
the GPF downstream pressure sensor interface 2 is connected to the ECU, and the GPF downstream pressure sensor interface 3 is a interface for connecting the GPF downstream pressure sensor interface 1 and the GPF downstream pressure sensor interface 2.
9. The method of claim 1, wherein the GPF removes the fault code by: in the initial step, the connection between the GPF upstream pressure sensor and the GPF downstream pressure sensor and the ECU is disconnected by pulling out the GPF upstream pressure sensor interface 3 and the GPF downstream pressure sensor interface 3 on the ECU adapter.
10. The method of claim 8, wherein the GPF removes the fault code by: the anodes of the two channels of the function signal generator are respectively connected with the GPF upstream pressure sensor interface 2 and the GPF downstream pressure sensor interface 2, and the cathodes of the two channels of the function signal generator are both connected with a vehicle body ground pin.
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008133764A (en) * | 2006-11-28 | 2008-06-12 | Mitsubishi Motors Corp | Exhaust emission control device for internal combustion engine |
| KR20120056345A (en) * | 2010-11-25 | 2012-06-04 | 현대자동차주식회사 | Monitering method for noticing DPF's error |
| US20150000257A1 (en) * | 2011-12-23 | 2015-01-01 | Doosan Infracore Co., Ltd. | Active regeneration control device for a diesel particulate filter |
| JP2015175321A (en) * | 2014-03-17 | 2015-10-05 | 株式会社デンソー | Filter failure detector and particulate matter detector |
| US20160363032A1 (en) * | 2015-06-15 | 2016-12-15 | Deere & Company | Catalytic device detection system |
| JP2017048709A (en) * | 2015-09-01 | 2017-03-09 | 日野自動車株式会社 | Failure diagnosis device of particulate filter |
| CN107989679A (en) * | 2017-12-23 | 2018-05-04 | 无锡威孚力达催化净化器有限责任公司 | Diesel engine after treatment control system test device |
| CN108223060A (en) * | 2017-12-20 | 2018-06-29 | 中国第汽车股份有限公司 | A kind of particulate matter trap monitors system and method |
| CN110821690A (en) * | 2019-11-28 | 2020-02-21 | 安徽江淮汽车集团股份有限公司 | Method, device and equipment for acquiring idle speed target value of diesel engine and storage medium |
| CN110849605A (en) * | 2019-11-18 | 2020-02-28 | 中国重汽集团济南动力有限公司 | Particle catcher fault simulation device, method for judging blocking fault degree and method for removing fault degree |
| US20200116068A1 (en) * | 2013-05-08 | 2020-04-16 | Cummins Ip, Inc. | Exhaust aftertreatment system diagnostic and conditioning |
| CN111649872A (en) * | 2020-06-11 | 2020-09-11 | 武汉飞恩微电子有限公司 | Pressure sensor device and system with redundancy diagnosis function |
-
2020
- 2020-09-30 CN CN202011059463.7A patent/CN112083715A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008133764A (en) * | 2006-11-28 | 2008-06-12 | Mitsubishi Motors Corp | Exhaust emission control device for internal combustion engine |
| KR20120056345A (en) * | 2010-11-25 | 2012-06-04 | 현대자동차주식회사 | Monitering method for noticing DPF's error |
| US20150000257A1 (en) * | 2011-12-23 | 2015-01-01 | Doosan Infracore Co., Ltd. | Active regeneration control device for a diesel particulate filter |
| US20200116068A1 (en) * | 2013-05-08 | 2020-04-16 | Cummins Ip, Inc. | Exhaust aftertreatment system diagnostic and conditioning |
| JP2015175321A (en) * | 2014-03-17 | 2015-10-05 | 株式会社デンソー | Filter failure detector and particulate matter detector |
| US20160363032A1 (en) * | 2015-06-15 | 2016-12-15 | Deere & Company | Catalytic device detection system |
| JP2017048709A (en) * | 2015-09-01 | 2017-03-09 | 日野自動車株式会社 | Failure diagnosis device of particulate filter |
| CN108223060A (en) * | 2017-12-20 | 2018-06-29 | 中国第汽车股份有限公司 | A kind of particulate matter trap monitors system and method |
| CN107989679A (en) * | 2017-12-23 | 2018-05-04 | 无锡威孚力达催化净化器有限责任公司 | Diesel engine after treatment control system test device |
| CN110849605A (en) * | 2019-11-18 | 2020-02-28 | 中国重汽集团济南动力有限公司 | Particle catcher fault simulation device, method for judging blocking fault degree and method for removing fault degree |
| CN110821690A (en) * | 2019-11-28 | 2020-02-21 | 安徽江淮汽车集团股份有限公司 | Method, device and equipment for acquiring idle speed target value of diesel engine and storage medium |
| CN111649872A (en) * | 2020-06-11 | 2020-09-11 | 武汉飞恩微电子有限公司 | Pressure sensor device and system with redundancy diagnosis function |
Non-Patent Citations (4)
| Title |
|---|
| 刘洋: "基于神经网络的汽油机颗粒捕集器故障诊断", 《车用发动机》 * |
| 成哲: "重型柴油车SCR和DPF后处理***OBD功能测试方法研究", 《中国优秀硕士学位论文全文数据库工程科技II辑》 * |
| 戴金池: "柴油车DPF***的OBD故障诊断策略研究", 《车用发动机》 * |
| 章慧敏: "重型柴油机DPF的OBD故障诊断策略研究", 《中国优秀硕士学位论文全文数据库工程科技II辑》 * |
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Application publication date: 20201215 |