Ignition control method for spark ignition type free piston linear generators

Abstract

The invention discloses an ignition control method for a spark ignition type free piston linear generator, and belongs to the field of energy power. As the piston movement laws, in the starting process and the generation process, of the spark ignition type free piston linear generator are different, the control method disclosed in the invention comprises the following steps: 1, controlling an ignition system to carry out ignition by adopting real-time piston displacement information in the starting process; and 2, controlling the ignition system to carry out ignition by adopting real-time piston displacement and speed information in the generation process. The ignition control method has the technical effect of respectively presetting ignition threshold values to carry out ignition according to the piston movement laws in the starting process and the generation process of the spark ignition type free piston linear generator, so as to ensure the stable continuous operation of the spark ignition type free piston linear generator and improve the output efficiency of an internal combustion engine. Moreover, the ignition control method does not need other auxiliary systems and can realize ignition control through software programming, so that the ignition control is not influenced by the piston stop change and the gas mixtures can be ignited during each circulation.

Description

technical field [0001] The invention relates to an ignition control method, in particular to an ignition control method for an ignition type free-piston linear generator, belonging to the field of energy and power. Background technique [0002] With the increasingly serious environmental problems and energy supply problems, researchers from various countries have started to develop new energy conversion devices while improving the efficiency and performance of traditional internal combustion engines. As a typical representative of the new energy conversion device, the ignited free-piston linear generator has many unique advantages, such as simple structure, short energy transmission path, high power density, and can be applied to various combustion modes and various fuel adaptability And many other advantages, has great application prospects. [0003] The ignited free-piston linear generator is formed by coupling two free-piston internal combustion engines and a linear moto...

AI Technical Summary

Problems solved by technology

Especially when the free-piston linear generator is running in the power generation process, since the dead point position of each cycle is different, if the preset ignition position is too far ahead of the dead point position of the cycle, the internal combustion engine will be ignited too early, which will lead to a decrease in the output efficiency of the internal combustion engine. If the preset ignition position is too far behind the end point of the cycle, the combustion pressure will decrease, the output power of the internal combustion engine will decrease, and even cause the ignition type free piston linear generator to stop running. Free Piston Linear Generator Shutdown Operation

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