On Vaporization of a Single Droplet of Diesel Fuel at LPG Fuelled Engine by Diesel-Gas Method

摘要

The result of a zero-dimensional one-zone thermodynamic model developed for diesel fuel jets vaporization at diesel-LPG fuelling for an automotive diesel engine are presented. The break-up period of diesel fuel jet. Sauter diameter of drops, mass flow of vaporized substance, drops vaporization time, forming speed of air-fuel mixture, autoignition delay for diesel and dual fuelling are determinate. In the nearby area of air-LPG mixture burns, the increase of in-cylinder mixture forming speed and the level of in-cylinder pressure lead to a decrease tendency for autoignition delay of diesel fuel. The duration of drops vaporization decreases for dual fuelling.