上流旋回式インジェクタの噴霧特性に関する研究 : 第1報,微粒化特性とエンジン性能

概要

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In order to improve fuel economy and reduce emissions in gasoline engines, fine fuel atomization is required. This report shows how the fuel atomization of an injector affects the engine performance. This injector is referred to as an upstream-swirl-type injector, because it consists of a lightweight ball valve and a fuel swirling element (called a swirler) that induces a swirl at the upstream of the metering orifice. Atmospheric conditions such as low air pressure and low temperature did not have any significant effect upon the shape of the fuel spray. A small spray angle and a mean droplet diameter of less than 100μm (Rosin-Rammler) is obtained. The proposed fuel injector shows better acceleration response and starting performance below-30℃ in engine tests using passenger car engines compared with the conventional Hitachi injector.
一般社団法人日本機械学会の論文
1995-09-25