Motor vehicle tail gas intelligent detection and diagnosis system and method

The invention relates to the field of engine control testing, and discloses an intelligent detection and diagnosis system and method for motor vehicle exhaust, and the system comprises an automobile energy conversion and obtaining module which is used for detecting an automobile and obtaining the fuel oil combustion efficiency; the temperature sensing module is used for detecting the engine working temperature. The exhaust intake module is used for quantitatively acquiring automobile exhaust. And the tail gas detection module is used for detecting and obtaining each component and concentration. The acceleration state obtaining module is used for obtaining the current vehicle acceleration condition. The vehicle load acquisition module is used for acquiring a current vehicle load ratio. The analysis and judgment module is used for searching the load ratio, the temperature, the fuel combustion efficiency, the acceleration and the automobile exhaust-damage information table to obtain the damage type and probabili