喷油嘴的原理 更新时间: 2020-10-23

喷油嘴其实就是个简单的电磁阀,当电磁线圈通电时,产生吸力,针阀被吸起,打开喷孔,燃油经针阀头部的轴针与喷孔之间的环形间隙高速喷出,形成雾状,利于燃烧充分。


喷油嘴本身是一个常闭阀 (常闭阀的意思是当没有输入控制讯号时,阀门一直处于关闭状态;而常开阀则是当没有输入控制讯号时,阀门一直处于开启状态,由一个阀针上下运动来控制阀的开闭。当ECU下达喷油指令时,其电压讯号会使电流流经喷油嘴内的线圈,产生磁场来把阀针吸起,让阀门开启好使油料能自喷油孔喷出。 喷射供油的最大优点就是燃油供给之控制十分精确,让引擎在任何状态下都能有正确的空燃比,不仅让引擎保持运转顺畅,其废气也能合乎环保法规的规范。

nozzle itself is a normally closed valve (normally closed valve means when no input control signals, the valve has been closed; the valve is always open when no input control signals, the valve has been turned, by a valve needle up and down movement control valve opening and closing. When the ECU issued the fuel injection instruction, the voltage signal will make the current flow through the nozzle of the coil, the magnetic field to the valve needle, so that the valve opening so that oil can be ejected from the injection hole. The biggest advantage is to control the injection fuel supply is very accurate, so the engine can have the correct air-fuel ratio in any state, not only keep the engine running smoothly, its exhaust can meet environmental regulations and standards.

Copyright @ 2011-2016 www.CheBiaoW.com   车标网   苏ICP备12030990号,我要投稿