汽车技术
汽車技術
기차기술
Automobile Technology
2015年
9期
1-3
,共3页
发动机%双燃料%切换过程%控制策略
髮動機%雙燃料%切換過程%控製策略
발동궤%쌍연료%절환과정%공제책략
Engine%Dual fuel%Switch process%Control strategy
以某2.0 L发动机为研究对象，通过试验和仿真分析燃用氢-汽油两种燃料各自的优缺点。结合万有特性曲线，确定双燃料发动机的燃料切换点，并基于扭矩连续的控制策略计算得到了切换期内的节气门开度和两种燃料各自发出的扭矩值及燃料流量值。通过控制节气门开度、混合气浓度可实现双燃料切换过程中的扭矩连续变化，表明该控制策略可行。
以某2.0 L髮動機為研究對象，通過試驗和倣真分析燃用氫-汽油兩種燃料各自的優缺點。結閤萬有特性麯線，確定雙燃料髮動機的燃料切換點，併基于扭矩連續的控製策略計算得到瞭切換期內的節氣門開度和兩種燃料各自髮齣的扭矩值及燃料流量值。通過控製節氣門開度、混閤氣濃度可實現雙燃料切換過程中的扭矩連續變化，錶明該控製策略可行。
이모2.0 L발동궤위연구대상，통과시험화방진분석연용경-기유량충연료각자적우결점。결합만유특성곡선，학정쌍연료발동궤적연료절환점，병기우뉴구련속적공제책략계산득도료절환기내적절기문개도화량충연료각자발출적뉴구치급연료류량치。통과공제절기문개도、혼합기농도가실현쌍연료절환과정중적뉴구련속변화，표명해공제책략가행。
By studying a 2.0 L engine using experiment and simulation, the advantages and disadvantages are analyzed when different kinds of fuel are burnt. According to the universal characteristic curve, we determine the switching point of the dual-fuel engine, and get the throttle opening during the switching stage, the torque value and the fuel flow values of these two fuels based on the continuous torque control strategy. By controlling the throttle opening, gas mixture concentration, the torque can be changed continuously in the process of the dual fuel switching, proving feasibility of this control strategy.
