IDLING CONTROL DEVICE FOR GAS FUEL ENGINE

摘要

PURPOSE:To utilize an injector on the market, by providing a mixer, which has a Venturi injecting gas fuel of flow amount almost in proportion to an engine speed and an injector able to electrically control an injection quantity in accordance with the engine speed, on the extension of an intake pipe. CONSTITUTION:Now if assumed 800rpm for idling speed, a control means 37, in which an injector driving time arithmetic means calculates a value so as to decrease or increase the valve opening time of an injector 34 in accordance with the engine speed if it increases above or decreases below the above described 800rpm, performs a feedback control of the idling speed. In this way, a flow amount, while it is regulated, is supplied with about 70-85% the required flow amount from a Venturi 33 and the rest of about 15-30% from the injector 34. Accordingly, even an existing injector is able to sufficiently correspond to the use.