摘要
为了配合稀NOx吸附 还原催化转化器的正常工作,开发了一套稀燃汽油机电控系统.该系统不仅可以任意设定汽油机浓、稀燃的空燃比大小和间隔时间长短,而且可以使稀NOx吸附 还原催化转化器在稀燃时,控制汽油机按稀燃状态运行;而在浓燃还原再生过程中,电控系统自动调小节气门开度和点火提前角,使得汽油机对外输出的扭矩稳定.将该系统应用于一台丰田8A FE16气门EFI汽油机,实验结果表明,研制的稀燃电控系统,达到了设计的要求.
For the special requirements from NO_x adsorber-reduction catalyst, an electronic control system was developed. The system can set different A/F and time interval. In the rich oxygen burn condition, the system controls the engine to operate lean burn running.In the reduction condition, the system reduces the opening of throttle and advances ignition timing automatically in order to obtain constant output power. The system was experimented on Toyota 8A-FE16 valves EFI lean burn gasoline engine, and the results showed that the system meet the requirements of NO_x adsorber-reduction catalyst operation.
出处
《燃烧科学与技术》
EI
CAS
CSCD
2004年第5期400-404,共5页
Journal of Combustion Science and Technology
基金
国家自然科学基金资助项目(50276042)
国家自然科学基金重点资助资目(59936130).
关键词
准均质稀燃汽油机
NOX排放
吸附-还原催化
quasi-homogeneous lean burn gasoline engine
NO_x emission
adsorber-reduction catalyst
