一、前言现在,在日本做为社会问题的环境净化和防止公害是经常提到的大问题。每天报纸上都有登载,就对人的安全这点来讲,应越来越重视这个问题。因此,内燃机制造厂从只单纯追求性能,要转到考虑减少内燃机使用时产生的公害,在协力净化环境的同时,也要考虑安全装备。现在,汽车受排气规定的限制,成了环境净化的对象,但是通用小型发动机当然也必须考虑防止公害和安全性的问题。在本文中,除对通用小型柴油机的技术动向说明外,还就如前所述的变为社会上关心的防止公害、安全装备等及其动向概括说明,以供参考。回顾一下,日本通用小型柴油机是从第二次世界大战结束后急剧发展起来的,从农业机 I. Preface Nowadays, environmental cleanup and pollution prevention in Japan as a social issue are the big issues that are often mentioned. Every day newspapers are published, on the point of human security, more and more attention should be paid to this issue. Therefore, the internal combustion engine manufacturing plant only from the simple pursuit of performance, should be considered to reduce the use of internal combustion engine to produce pollution, in the joint efforts to clean up the environment, we must also consider safety equipment. Nowadays, cars are subject to exhaust regulations and become targets for environmental cleanup, but of course the general small engines must also consider the issue of preventing pollution and safety. In this article, in addition to the general technical instructions for small diesel engines, as mentioned above, the public concern about the prevention of pollution, safety equipment and their general description for reference. In retrospect, the Japanese general purpose small diesel engine developed rapidly from the end of World War II, from the agricultural machine