电喷发动机燃油喷射展示系统的设计与开发
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摘要
在日常教学中,以当前主流的电控燃油喷射发动机为主介绍其相关原理与结构,但是现有的教学设备存在一定的局限。因此,设计开发了一款电喷发动机燃油喷射展示系统。该系统基于单片机系统开发,发动机转速采用定时电路模拟,同时方波信号也用于上止点位置的确定,进气流量传感器、节气门位置和温度传感器采用线性电位计表示。以上述信号为基础,开发了相应的信号处理电路,完成了器件的选型,并开发了对应的软件,实现了喷油过程的控制。实验表明,该系统可实现根据外部传感器信息的变化改变喷油量,达到了预期设计目的。
At present, electronic fuel injection(EFI) engine is the common type for gasoline engine and the teaching of engine is also based on this type engine. One display system of EFI system was designed due to the limitation of existing aid teaching equipment. The system is developed based on single chip controller. The engine speed is simulated by timing circuit which is also the sensor of top dead center position and the intake flow sensor, throttle position sensor and engine body temperature sensor are simulated by linear potentiometer. Meanwhile, the corresponding hardware and software system were developed based on the controller which can realize the fuel injection variation. Then the experiments show that the system can vary the fuel injection according to the change of external sensor information and achieve the desired design purpose.
At present, electronic fuel injection(EFI) engine is the common type for gasoline engine and the teaching of engine is also based on this type engine. One display system of EFI system was designed due to the limitation of existing aid teaching equipment. The system is developed based on single chip controller. The engine speed is simulated by timing circuit which is also the sensor of top dead center position and the intake flow sensor, throttle position sensor and engine body temperature sensor are simulated by linear potentiometer. Meanwhile, the corresponding hardware and software system were developed based on the controller which can realize the fuel injection variation. Then the experiments show that the system can vary the fuel injection according to the change of external sensor information and achieve the desired design purpose.
引文
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[2] 刘照亮.摩托车电喷系统闭环控制策略的研究[D].武汉:华中科技大学,2012.
[3] 陆薛松.摩托车电喷发动机缸内燃烧过程数值模拟[D].南京:南京理工大学,2012.
[4] 马宗正,马建辉,余永昌.实验用汽油发动机燃油喷射及点火系统开发[J].实验技术与管理,2013,30(8):60-64.
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[7] 裴海灵,胡旭,姚要攀.高压共轨燃油喷射系统喷油特性实验研究[J].内燃机,2011(4):27-29.
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[11] 王琳霖,王伟,曹国强,等.基于单片机的机电控制实训平台设计[J].实验技术与管理,2018,35(4):82-85.
[2] 刘照亮.摩托车电喷系统闭环控制策略的研究[D].武汉:华中科技大学,2012.
[3] 陆薛松.摩托车电喷发动机缸内燃烧过程数值模拟[D].南京:南京理工大学,2012.
[4] 马宗正,马建辉,余永昌.实验用汽油发动机燃油喷射及点火系统开发[J].实验技术与管理,2013,30(8):60-64.
[5] 赵海新,左明伟,孙晓娜.电子点火与电控燃油喷射实验教学系统设计[J].承德石油高等专科学校学报,2013,15(2):55-59,62.
[6] 谈炳发,孙苗钟,刘鑫,等.汽车电子点火与燃油喷射实验系统的改进[J].中国教育技术装备,2013(3):57-59.
[7] 裴海灵,胡旭,姚要攀.高压共轨燃油喷射系统喷油特性实验研究[J].内燃机,2011(4):27-29.
[8] 付娟,董雯.一种燃油喷射系统实验台智能化改造与设计[J].国外电子元器件,2008(10):15-16,19.
[9] 王建昕,帅石金.汽车发动机原理[M].北京:清华大学出版社,2011.
[10] 张西振.汽车发动机电控技术[M].3版.北京:机械工业出版社,2016.
[11] 王琳霖,王伟,曹国强,等.基于单片机的机电控制实训平台设计[J].实验技术与管理,2018,35(4):82-85.