开关作用是所有点火系统的基础。只有得到新型和改进的开关方法,才能使点火技术前进一步。机械的和电子的这些不同的开关型式规定了设计概念的主要时代。机械式,或称触点式,已经应用70多年了。这段期间又可分为两个阶段。在第一阶段,触点在发动机的气缸里,用强电弧和火花来点火。但这段时间很短。在第二阶段,触点移到燃烧室的外边,就成了我们熟悉的磁电机和蓄电池点火系统。现在触点所起的作用与其说是 The switching function is the basis of all ignition systems. Only by getting new and improved switching methods can ignition technology go one step further. These different switch types, mechanical and electronic, define the main era of design concepts. Mechanical, or contact type, has been used for more than 70 years. This period can be divided into two stages. In the first phase, the contacts are ignited by strong arcs and sparks in the cylinder of the engine. But this time is short. In the second phase, the contact moved to the outside of the combustion chamber, became our familiar magneto and battery ignition system. Now the role of contacts is not so much