The invention provides a self-adaptation control method and system for a selective reduction catalyst. The self-adaptation control method for the selective reduction catalyst comprises the following steps that a piece of vehicle driving state information is extracted and comprises an accelerator opening degree, an engine rotating speed and a nitric oxide concentration; the vehicle driving state information is accumulated, and an injection reference table is built; the vehicle driving state information and the injection reference table are compared, and a piece of urea injection information is transmitted outwards; and urea is injected, and urea injection is controlled to conform to the urea injection information. The system can be additionally mounted on a diesel vehicle which is provided with no selective reduction catalyst system when leaving a factory, complex electronic connection or parameter adjusting with an engine electronic control unit is not needed, and therefore the mounting cost and time can be greatly reduced.

Applied Country	Category	專利狀態	證書號	專利權期間	研究成果公告日期
CN	Other categories technology	獲證	CN105649722B	2018/03/06~2034/12/03