论文部分内容阅读
目前农机市场上,柴油机的种类、型号较多。在此仅对涡流式和直喷式柴油机的特点作一些介绍,供用户选购时参考。 1.涡流式的特点 (1)混合气形成和燃烧主要是利用有组织的强烈的压缩涡流,因此对喷雾质量的要求不高,一般采用的是轴针式喷油器,喷油压力较低(10～12兆帕),因而对供油系统的要求不高,并减少了喷油孔堵塞等故障。这对于使用质量较差的柴油的用户有着特别的意义。 (2)压缩涡流随着转速的增高而加强,所以在转速较高时仍能保证较好的混合质量,混合气形成对
The current agricultural machinery market, the type of diesel engine, more models. Here only eddy current and direct injection diesel engine features for some introduction, for users to purchase reference. 1. The characteristics of eddy current (1) The formation and combustion of mixed gas is mainly the use of organized and intense compression vortex, so the spray quality is not high, the general use of the needle-type injector, the injection pressure is low (10 ~ 12 MPa), so the requirements of the fuel system is not high, and to reduce the injection hole plugging and other failures. This is of special importance for users of poor quality diesel. (2) The compression eddy current is strengthened with the increase of the rotational speed, so the better mixing quality can still be ensured at a higher rotational speed, and the formation of the