用射流元件作汽油供给装置

• 作 者: 来可伟
• 出 处: 国外汽车
• 发表日期: 1974年12期
• 关键词: 射流元件 汽化器 混合比 并联使用 供给装置 燃料供给 特性曲线 真空度 进气管 元件

设计发动机汽化器时,希望混合比只利用进气管真空度,和发动机转速无关,使混合气的浓度始终保持在经济混合比上。那么,能否用射流元件作汽油机的燃料供给装置?其实用性如何?是否能弥补现有汽化器的不足?本文对这些问题作了探讨,并介绍了它的初步试验(译文作了删节)。试验指出,应用一个偏向型比例放大元件和喉管组合控制燃料流量,其特性和理想特性总还有差异,又认为这种结构比现有的汽化器还要复杂,恐怕不可能制成一个完善的供油装置。另外还把三个偏向型比例放大元件并联使用(特性曲线分成三段),看来有一定的可能性,但用在发动机上后,由于脉动过激,而没能运转。

When designing an engine carburetor, it is desirable that the mixing ratio be independent of intake manifold vacuum and engine speed, so that the concentration of the mixture remains at the economic mixing ratio. Then, can we use the jet element as a fuel supply device of the gasoline engine, how practical is it, and whether it can make up for the deficiency of the existing carburetor? These questions are discussed in this paper, and its preliminary test is introduced. The experiment shows that the application of a biased proportional amplification element and a combination of throat pipe to control the fuel flow has a total difference in its characteristics and ideal characteristics. It is also believed that this structure is more complicated than the existing carburetor, so that it is impossible to make a perfect Oil supply device. In addition to the three biased-type proportional amplification components used in parallel (the characteristic curve is divided into three sections), it seems there is a certain possibility, but used in the engine, due to pulsating over-excited, and did not work.