点火角对小排量增压汽油机燃烧特性的影响研究
Equipment Manufacturing Technology(2011)
Abstract
对465Q汽油机进行废气涡轮增压改造,研究点火角对增压后发动机燃烧特性的影响。随点火角的增大,缸内最高压力和压升率峰值都增大,其对应的曲轴转角提前,燃烧循环变动改善;每个工况下,都存在一个最佳的点火角,使发动机的功率最大,燃油消耗率最低。在最佳点火角附近,点火角每调整5°,动力性和经济性变动幅度在4%左右。
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Key words
combustion performance,small output volume,ignition advance angle,supercharge,gasoline engine
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