| 摘要 |
An apparatus is proposed for burnoff of deposits from at least hot wire and/or hot film resistors in the air flow rate measurement circuit of an internal combustion engine, wherein during the burnoff procedure a separate electric current circuit is furnished to provide for the resistors to be burned off with high electric currents. In one embodiment, the resistors to be burned off are placed in a separate current path between two operational voltage leads, while in another embodiment, that there is provided a parallel circuit arrangement of individual resistors to be burned off, whereupon the total electric current flow through the individual resistors is then seprately controlled in closed-loop fashion.
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