Abstract: To address the serious issue of in-vehicle air pollution in the context of China's 336 million registered vehicles, as well as safety risks posed by passengers with respiratory infectious diseases, and to overcome inefficiencies in existing disinfection technologies, this paper proposes a novel engine air intake combustion sterilization electronic control negative pressure device featuring four key modules. Through an electronic control system, this device can extract air from the vehicle cabin whether the engine is running or off, and sterilize it by heating it to a high temperature of 80 ℃ using either the heat from engine combustion or a heating wire, while simultaneously maintaining negative pressure in the cabin to draw in fresh air from outside. In its structure, the check valve inside the air storage tank prevents engine backfire, ensuring cabin safety. This enables the maintenance of negative cabin pressure and efficient sterilization under all operating conditions. Experimental tests have verified the device's high sterilization efficiency and reliable negative pressure control. Compared to existing technologies, this device utilizes electronic control, thus saving installation space and resolving issues of incomplete and unsafe sterilization. It is a win-win solution capable of providing effective sterilization and disinfection while meeting mass consumer affordability.

Key words: air pollution in the car; high-temperature sterilization; electronic control; cabin negative pressure

摘要： 为解决汽车保有量达 3.36 亿辆背景下的车内空气污染严重的问题，以及车内呼吸道传 染病患者带来的安全隐患，并针对现有技术消毒低效等不足，文章提出了兼具四大模块的发 动机进气燃烧灭菌电子控制负压装置的研究，该装置通过电子控制系统，可在发动机工作或 熄火时，将车舱内空气抽取并利用发动机燃烧高温或发热丝加热至 80 ℃的高温进行灭菌，同 时使车舱维持负压状态，让车外新鲜空气流入。其结构中储气罐内的单向阀能防止发动机回 火，保障车舱安全，实现全工况下的车舱负压维持与高效灭菌。经试验验证该装置的灭菌效 率高且负压控制性能好。与现有技术相比，该装置运用电子控制系统控制，既节省了安装的 空间，又解决了灭菌不彻底，灭菌不安全的问题，是可以实现高效消毒灭菌和满足百姓消费 水平双赢的设备。

关键词: 车内空气污染；高温灭菌；电子控制；客舱负压