| 摘要 |
<p>PURPOSE:To attain complete combustion of a burner, by providing a flow meter and an atmospheric pressure gauge in an air passage at the inlet of the burner, calculating the mass flow rate of air from the output signals of the above means, comparing the mass flow rate of air with a requisite mass flow rate, and controlling an air control valve according to the deviation between the two mass flow rates detected by the above comparison. CONSTITUTION:In a burner air control system in which air is supplied from an air pump 23 to a burner 22 of a diesel particulate filter (DPF) system via an air control valve (ACV) 25, a vacuum sensor 29 is connected to a venturi 27 provided on the suction side of the air pump 23, and an atmospheric pressure sensor 30 is connected to an air cleaner 31. Outputs of these sensors 29, 30 are furnished to a computer 24 for calculating the actual mass flow rate of air, and it is compared with a requisite mass flow rate of air pre-tored in the computer 24. A solenoid valve 34 attached to the ACV25 is controlled according to the result of the above comparison for enabling to supply air at the rate required for attaining complete combustion of the burner 22. With such an arrangement, it is enabled to regenerate a DPF21 by combustion gas of the burner 22.</p> |
