System for be used for promoting commercial car engine exhaust performance

The utility model provides a system for be used for promoting commercial car engine exhaust performance, includes expansion tank, detection portion, control section and regulation part, expansion tank's air inlet is connected through ventilative branch pipe ventilative mouthful with the expansion tank, expansion tank's delivery port through transparent flexible glue manage with the water piping connection that advances that is connected the engine, detection portion includes baroceptor, flow sensor, temperature sensor, supersound bubble detection sensor, control section mainly comprises singlechip, control switch and alarm, it comprises water tank elevating gear and pressure discharge valve to adjust the part, detection portion sends monitor signal to control section, and the alarm among the control section is reported to the police, and control signal is sent to adjusting the part by control section in the back of reporting to the police. This system satisfy in office more where, the vehicle is monitored and