汽油／LPG双燃料轿车双点火提前角自动切换装置

汽油车改装成汽油／LPG双燃料车后，由于汽油和LPG的物化性质和燃烧特性有较大的差别，因而使用同一个点火提前角是不合理的。本文以桑 塔纳LX型轿车发动机为对象，通过台 试验得出燃用LPG时的最佳点火提前角，在原车点火系统的基础上，研制出一套能根据不同的燃料自动切换点火提前角的点火装置，该装置在台架和整车道路试验中都获得较好的结果。

Ignition Timing Automatic Switching Device for Gasoline/LPG Dual-fuel Car

It is unreasonable that the car runs at the same ignition timing, when it was converted into gasoline /LPG dual fuel vehicle, because the physical, chemical and combustion characteristics of gasoline and LPG are different. The paper takes SANTANA LX car as research object and gets the best ignition timing from bench test when running on LPG. And an ignition system is developed whose ignition timing can be switched automatically when engine change to different fuels. Both bench and road tests show satisfactory results.