OBD is the abbreviation of On-Board Diagnostics, Chinese translated as “board diagnostics system.” The system will monitor the operating conditions of the engine at any time whether excessive vehicle exhaust, once exceeded, a warning will be issued immediately. When the system fails, the failure (MIL) lamp or check engine (Check Engine) warning light, while the powertrain control module (PCM) fault information stored in the memory, can be read out from the PCM fault code through certain procedures . The prompt fault code, maintenance personnel can quickly and accurately determine the nature and location of the fault.
1.OBD the Glossary
OBD is the abbreviation of On-Board Diagnostics, Chinese translated as “board diagnostics system.” The system will monitor the operating conditions of the engine at any time whether excessive vehicle exhaust, once exceeded, a warning will be issued immediately. When the system fails, the failure (MIL) lamp or check engine (Check Engine) warning light, while the powertrain control module (PCM) fault informationStored in the memory, by certain procedures may be read out from the PCM fault code. The prompt fault code, maintenance personnel can quickly and accurately determine the nature and location of the fault. Working Principle
2.OBD the
OBD monitoring apparatus and a plurality of system components, including the engine, catalytic converter, particulate trap, the oxygen sensor , emission control system, fuel system, the EGR like. OBD is various information related to the discharge member, coupled to the electronic control unit (ECU), ECU includes detecting and analyzing faults emissions related functions. When the discharge failure occurs, the ECU recorded fault information and related codes, and the failure by a warning lamp, to inform the driver. ECU via standard data interface, to ensure the access and processing fault information.
3.OBD Development
OBD technology originated in the United States, the early 80’s OBD technology, is to remind the driver failure or malfunction occurring by appropriate technical means. The EU and Japan, the introduction of OBD technology after 2000, 04 years later, OBD automotive technology developed countries to take the third stage.
Europe and the United States in the project OBD detection limits and terms, there are some differences, the specific differences content not elaborate. Before the United States find fault OBD purpose of monitoring is to become a high-emission vehicle standards; the purpose of the European OBD monitoring is to find high-emission vehicles. Our import OBD technology, equivalent to the relevant provisions of OBD systems in Europe after three stages.
after the author and automotive technicians determine, Euro III emission standards does not mean OBD, install OBD December 1 implementation of Beijing’s enforcement policy, vehicles + OBD standard Euro III.
OBD need to declare the vehicle to install OBD, we need to apply a systematic process, but also requires companies to install OBD vehicle carried out a number of tests, provide compliance data to the relevant authorities (currently three projects will be seized oxygen sensor failure verification, the catalytic converter fails verification, validation fire), usually 10 months period. Install OBD vehicles, the need to re-apply announcement of the vehicle. OBD high research and development costs, if scale production, single-sharing technology costs will be reduced. Issue
4.OBD introduction faced
the introduction of OBD, and use of the environment, fuel characteristics, driving habits, vehicle condition and other fourClosely related to the main areas. Any one part of the short board, will affect the expansion and application of OBD. The introduction of OBD technology, the following relevant supporting conditions corresponding increase: support for fuel quality, vehicle maintenance skills, consistency related parts and improve the level of the driver, improving OBD technology itself and all sectors of society. I believe that within a certain period of time, China’s OBD technology is a process of adaptation and the introduction of digestion and absorption. Because OBD technology, not only with the car itself, but also the number of links associated with other fuel and driver, etc., OBD technology introduction and expansion of the automobile industry chain is a challenge and improve.