CAJ | 학술논문

为准确检测并有效控制GDI增压发动机的爆震，设计了一种控制系统。该系统通过爆震传感器检测缸体振动情况，通过信号处理提取相应能量值，依据能量值大小判断是否发生爆震及爆震强度，并区分为普通爆震和超级爆震。对前者采取推迟点火角来控制，后者采取燃油加浓、凸轮轴调节和断油措施来控制。HIL和台架测试结果表明，该系统能准确检测并有效控制爆震，以保证发动机的动力性、经济性和安全性。
위준학검측병유효공제GDI증압발동궤적폭진，설계료일충공제계통。해계통통과폭진전감기검측항체진동정황，통과신호처리제취상응능량치，의거능량치대소판단시부발생폭진급폭진강도，병구분위보통폭진화초급폭진。대전자채취추지점화각래공제，후자채취연유가농、철륜축조절화단유조시래공제。HIL화태가측시결과표명，해계통능준학검측병유효공제폭진，이보증발동궤적동력성、경제성화안전성。
To detect the knock of GDI turbocharged engine correctly and control it effectively, we design a control system, which detects oscillation of every cylinder through knock sensor. The energy of every cylinder is acquired via signal processing and is estimated whether knock happens, if it is the case, the knock intension will be determined and the knock will be divided into common knock or super knock. The former will be controlled by ignition angle retarding and the latter will be controlled by fuel enrichment, camshaft adjustment and fuel cutoff. The results of HIL and test bench tests indicate that this system can detect knock correctly, control it effectively and ensure power, economy and security of the engine.