| 摘要 |
<p>This rotor-carburetor arrangement with idling mixture formation has a traditional throttle flap (2), a rotor-carburetor (3) and at least one idling duct (20). The rotor-carburetor (3) contains an impeller (9) which drives a rotor (8). The rotor (8) has a fuel outlet bore (17). This nozzle bore (17) in the case of a rotating impeller (9) delivers a fuel quantity which stands in a linear relationship to the impeller rpm. The load-fuel air mixture is so lean that a portion of harmful substances in the exhaust gases is minimum and the CO portion is less than about 0.3%. The idling duct (20) has a pipeshaped inlet (23) which is directed toward the impeller (9) and an inlet opening (24) which lies in the marginal area of the intake duct (1) and close below the impeller. In the case of a closed throttle flap (2), the aspirated air flows through the idling duct (20) and this calls for a higher impeller rpm for the idling air throughput. Because of the higher impeller rpm, an idling mixture enriched with fuel will be obtained. The idling mixture in the exhaust gases may be adjusted with the setscrew (25) to 0.5-0.8% CO, which results in a satisfactory idling.</p> |
