| 摘要 |
<p>The present invention relates to a system and method for saving on fuel consumption and reducing pollutant emissions for an internal combustion engine, including a system comprising a pressure-responsive air-supply regulating device including a perforated air inlet passage with an air filtering means, an air outlet, a pre-calibrated primary air passage comprising coarse-tuning and fine-tuning air-flow and air-volume regulating means fluidically communicating with each other and to said inlet passage and air outlet, a secondary air passage for augmenting the volume of airflow supply at engine's part-throttle conditions fluidically communicating with said primary air passage and said air outlet; and pre-calibrated accompanying connecting conduit means connecting said device to the engine's intake manifold through said air outlet; and methods of operating and installing said system to said engine; wherein all said elements fluidically communicate and interact with each other to provide the precise air-flow regulation and resistances for a timely delivery of the correct required air flow velocity and additional air volume to said intake manifold in response to the manifold vacuum pressure fluctuations, thus attaining and maintaining the running engine's effective air-fuel ratio range of about 15:1 to about 18:1 at all engine load conditions.</p> |
