In recent years, air pollution has become increasingly serious, including automobile exhaust pollution, so China's emission standards have become increasingly stringent. The state has issued a series of policies and standards, such as national standards GB17691 and GB18285, local standards DB11-1475 and DB11 / 122, which require a sound OBD (on-board diagnostic system) management system to improve environmental protection inspections for in-use and new vehicles through various means The inspection system takes emission records as an important part of the annual inspection.
Compared with the National Five OBD system, National Six has the following characteristics: new requirements, increased monitoring components, expanded monitoring range, improved monitoring functions, and more comprehensive and strict requirements for the OBD system in the National VI standard. Technical requirements such as thresholds and monitoring conditions have been revised.
The National Standard VI for light vehicles was released on December 27, 2016, and the National Standard VI for heavy vehicles was released this time. The heavy-duty vehicle VI integrates the advanced features of the European standard and the American standard, and puts forward more stringent requirements for China's actual situation. It can be said that the heavy-duty vehicle Six will become one of the strictest emission standards in the world!
When conducting engine pollutant emission tests, both CO2 emissions and fuel consumption must be measured and information disclosed (specific requirements for CO2 emissions will be published in due course). Secondly, the National Sixth Standard requires that when a vehicle is tested for fuel consumption, it must also measure the emissions of gaseous pollutants and particulate matter. Pollutant emissions should meet the requirements of PEMS emission limits in the National Sixth Standard, and companies also need to report the emission results to the Ministry of Environment and make the information public. This joint management and control idea proposed by the National Six Standards opens a new idea for the cooperative control of conventional pollutants and greenhouse gases of mobile sources in China.
All partners engaged in the field of environmental protection emissions have taken “the sky bluer and driving safer” as their mission, and launched a set of basic platforms covering all aspects of automobile exhaust gas treatment-automobile exhaust emission diagnosis and detection platform. From the perspective of exhaust gas treatment, the platform is divided into two parts: online real-time monitoring and inspection. All results are reported to the relevant national regulatory authorities in real time and archived for future reference.
Sudoku Technology's H6S Internet of Vehicles TBOX National VI OBD emissions remote online monitoring terminal includes remote monitoring of in-use vehicle emissions. One is the transformation of in-use vehicles, and the other is the data collection of non-road mobile machinery; OBD remote for China VI The online monitoring system is mainly aimed at the new models of National Six; the OBD emission on-site law enforcement system can be implemented in vehicle transformation, low-emission zone management, high-speed roadblocks, etc .; the vehicle exhaust emission detection system of the monitoring station includes annual vehicle inspection and engine off-line inspection , A series of solutions such as policy off-line and off-line inspection information, engine maintenance station maintenance, etc.
Standard on-line OBD environmental emission remote monitoring system for in-use vehicles. Exhaust gas treatment monitoring system introduced by various enterprises and functional departments for heavy diesel vehicle and diesel non-road mobile machinery exhaust gas treatment transformation, including exhaust gas data collection and treatment equipment H6S, smart sensors, vehicle A one-stop monitoring system that integrates remote communication devices, cloud platform big data storage, and deep data analysis.
The system consists of two parts: exhaust gas treatment equipment and big data background. Exhaust gas treatment equipment (H6S Internet of Vehicles TBOX National Six OBD emission remote online monitoring terminal) is installed in the vehicle, which is a collection of software and hardware equipment, intelligent sensors, and vehicle-mounted remote communication devices that monitor the exhaust gas of the vehicle; big data background provides cloud computing services , Map positioning services, data statistical analysis services, algorithm analysis services. The three parts realize data collection, reporting and big data storage through intelligent sensors and 4G wireless network connection.
System Components:
The system is mainly composed of a monitoring platform, a big data background, an intelligent data collection terminal, an intelligent sensor, and exhaust gas treatment equipment.
H6S Internet of Vehicles TBOX National Six OBD emissions remote online monitoring terminal function and corresponding business relationship:
| Vehicle monitoring |
Alarm and fault query |
| GPS location |
Alarm handling |
| Vehicle running status |
Alarm push settings |
| Engine status |
Alarm parameter setting |
| Post-processing working status |
Alarm query |
| Emissions data management |
Business management |
| Real-time data |
Installation order progress management |
| historical data |
Post-processing product management |
| Evaluation Report |
Administration Management |
| Emission characteristics |
Supplier Management |
| Statistics |
Maintenance plant management |
| Running statistics |
Account permissions and role management |
| Vehicle management |
|
| Vehicle Information |
Terminal information |
OBD system is that manufacturers actively monitor and test emissions-related components and systems in accordance with laws and regulations to find faults that adversely affect emissions. The engine's OBD system monitors the control system of almost all emissions-related components. OBD is a law and regulation, and all manufacturers and individuals must strictly abide by it.
Increased requirements or some increased standards for China VI:
1) Add PM sensor (monitoring of soot particles).
2) The world's first application of remote OBD monitoring to national standards, remote emission management vehicle terminal data transmission requirements. (In the future, not only the traffic management and traffic police will check the car terminal, but the environmental protection department will also check it)
3) Increased durability requirements; in terms of emission durability, the durability mileage of the National Sixth Standard has been extended by about 40% -60% compared to the National Fiveth Standard. 160,000 kilometers in 5 years, M3 and N3 models increased from 200,000 kilometers in 6 years to 300,000 kilometers in 6 years.
The M3 models with more than 7.5 tons and the N3 models with more than 16 tons have increased from 500,000 kilometers in 7 years to 700,000 kilometers in 7 years. (For manufacturers, the pressure will be much greater, and the warranty terms are estimated to be stricter, such as: no warranty for small oil, etc.)
4) Crankcase emissions: Open crankcase ventilation system, crankcase emissions must be included in the total emissions. (We know that the open exhaust pipe of the engine may exhaust exhaust gas. This part of the exhaust gas of the National Sixth Stage is also counted as the total amount of pollutant emissions. Same as gasoline engine)
5) The newly added OBD monitoring frequency requirement is ≥0.336; it refers to the timeliness of the fault detection of the in-use vehicle, which is relatively more demanding for manufacturers.
6) Increase the monitoring of the quality of urea solution (There is a urea quality detection sensor in the urea tank of the sixth stage of the country. If the added urea solution does not meet the standard, it will report a failure)
7) If a fault that worsens emissions is detected:
● Light up the specific alarm indicator (MIL) on the vehicle dashboard;
● Store fault codes;
● Some faults may also cause "power reduction" (torque limit) operation (limited to 75%, and the previous limit of 40% is unbearable, how can this be adjusted?);
● Some more serious faults will also cause "speed limit" (20km / hour); (a very vivid term: crawling. Remember that the previous speed limit was: limp home, now it is: crawl home);
8) The difference between 6b and 6a is that PEMS test requirements are stricter.
The OBD system is like a strict head teacher, always supervising the normal operation of the post-processing system and related systems. It will point out the error of each "student", will issue a warning (light warning light), tell you what is wrong (fault code), and even severely punish (speed limit, torque limit).
Of course, under special circumstances, "it" will also give "students" leave without monitoring, allowing "students" to play freely. For example, the following situations will not be monitored:
1. For engine / vehicle operation safety considerations: For example, some fault codes that will involve the normal operation of the engine.
2. Ambient temperature and altitude conditions:
a) The ambient temperature is below -7 ° and the coolant temperature is below 60 °;
b) When the ambient temperature is lower than -7 °, the urea solution cannot be sprayed normally;
c) The ambient temperature is higher than 38 °;
d) The altitude is above 2500 meters;
e) Below the altitude of -400 meters;
f) The ambient temperature is lower than -22 °;
3. Low diesel fuel tank inventory
4. The battery voltage is too high or too low
5. PTO activation (for example, the crane starts working on the car)
6. Forced regeneration (DPF)
7. Auxiliary emission control strategy
8. Refueling (burning cars)
