What does China 4 OBD mean?
2 Answers
China IV+OBD can be understood as a vehicle equipped with a self-diagnostic system that meets the China 4 emission standards. Below is an introduction related to China IV: 1. China IV is the fourth stage of national motor vehicle pollutant emission standards. The main pollutants emitted by vehicles include HC (hydrocarbons), NOx (nitrogen oxides), CO (carbon monoxide), PM (particulate matter), etc. By applying technologies such as improved catalytic converter active layers, secondary air injection, and exhaust gas recirculation systems with cooling devices, the standards aim to control and reduce vehicle emissions below specified levels. 2. OBD is translated into Chinese as 'On-Board Diagnostics,' which is used to monitor engine emissions and operating conditions. This system can monitor the working conditions of the engine's electronic control system and other functional modules of the vehicle in real-time during operation. If any abnormal conditions are detected, it will determine the specific fault according to specific algorithms and store the diagnostic trouble codes in the system's memory.
China IV OBD refers to the On-Board Diagnostics system required by the fourth-phase motor vehicle emission standards in our country. I remember after my old car was upgraded to the China IV standard, I clearly felt it became more environmentally friendly. This OBD system is like a self-checking doctor for the car, constantly monitoring whether emissions exceed standards. For example, if the exhaust pipe leaks or combustion is insufficient, it immediately lights up a warning light on the dashboard to alert me, preventing the problem from worsening while also protecting the environment. Nowadays, all new cars come equipped with this system, which is quite convenient for car owners as it helps detect minor issues early, avoiding the need for major repairs. It's advisable to pay more attention to maintenance and get the car checked promptly if a warning light comes on while driving. In summary, the China IV OBD integrates the practical needs of technical regulations, making driving more reassuring.
