What does the three-way catalytic OBD mean?
2 Answers
OBD is the abbreviation of On-Board-Diagnostic in English, which is translated as "on-board diagnostic system" in Chinese. The following is the extended knowledge about OBD: 1. Principle: When high-temperature automobile exhaust passes through the purification device, the purifying agent in the three-way catalytic converter will enhance the activity of three gases, CO, hydrocarbons, and NOx, promoting them to undergo certain oxidation-reduction chemical reactions. Among them, CO is oxidized into colorless and non-toxic carbon dioxide gas at high temperatures; hydrocarbons are oxidized into water (H2O) and carbon dioxide at high temperatures; and NOx is reduced into nitrogen and oxygen. The three harmful gases are transformed into harmless gases, thereby purifying the automobile exhaust. The premise is that there is still oxygen available, and the air-fuel ratio must be reasonable. 2. Function: The three-way cleaning agent can simultaneously clean the engine's intake system, combustion system, and exhaust system. It powerfully, quickly, and efficiently removes the colloidal carbon deposits in the intake tract and combustion chamber, as well as the chemical complexes attached to the oxygen sensor and three-way catalytic converter. The removed colloidal carbon deposits and chemical complexes will be fully oxidized and burned into gases and discharged. This achieves the goal of treating exhaust, significantly reducing CO, HC, and NOx.
The three-way catalytic converter OBD, from the owner's perspective, refers to the coordination between the vehicle's three-way catalytic converter and the OBD diagnostic system. The three-way catalytic converter is installed in the exhaust system and can convert harmful gases such as carbon monoxide in the exhaust into harmless carbon dioxide and water, helping the vehicle reduce pollution. The OBD system is an onboard computer monitoring tool that can check the operation of the catalytic converter in real time. If the catalytic converter malfunctions, such as low efficiency or clogging, the OBD system will illuminate a warning light on the dashboard and generate specific error codes, such as P0420. As someone who frequently drives long distances, I once encountered a catalytic converter failure, which was alerted by the OBD system. I promptly went to the repair shop for inspection, and after replacing the catalytic converter, the emissions met the standards. Driving is now more reassuring, and I don't have to worry about exceeding emission limits and harming the environment.
