Internal -combustion engine intake duct combustion adjuvant injection apparatus based on PLC

The utility model provides an internal -combustion engine intake duct combustion adjuvant injection apparatus based on PLC belongs to technical field, the utility model discloses well signal acquisition system gathers the signal of engine and combustion adjuvant gas circuit, inputs programmable logic controler through the signal conversion module to the instruction process sequential operation whocombines the human -computer interaction touch -sensitive screen passes through IO mouth output level control solid state relay's break -make, and then controls the switching of combustion adjuvant ftercompction valve and the modulation period and the duty cycle of high frequency valve, finally reaches the purpose that the accurate control combustion adjuvant supplyed pressure and flow. The utility model discloses can satisfy the demand of engine rig test and real vehicle test, having remedied in the past, the combustion adjuvant supplementary device only leads to the fact unstable, the experimental precision of comb