几种先进的电子控制燃油喷射系统１多级喷射装置提高燃油喷射压力（达到１７００ｂａｒ）能降低油耗和颗粒物排放，但喷射开始时的高压和高温会引起额外噪声和促进ＮＯＸ的形成。在小型轿车用直喷式柴油机上采用多级整体式喷射装置的目的是控制有害物的排放和噪声。Ｓｔｅ... Several Advanced Electronic Controlled Fuel Injection Systems 1 Multistage injection improves fuel injection pressure (up to 1700 bar) to reduce fuel consumption and particulate emissions, but high pressure and temperature at the start of injection can cause additional noise and promote NOX formation. The purpose of the multi-stage monolithic injection system on direct injection diesel engines for small cars is to control the emission of hazardous substances and noise. Ste ...