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Methods of operation for controlled temperature combustion engines using gasoline-like fuel, particularly multicylinder homogenous charge compression ignition (HCCI) engines
Methods of operation for controlled temperature combustion engines using gasoline-like fuel, particularly multicylinder homogenous charge compression ignition (HCCI) engines
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机译:使用类汽油燃料的可控温度内燃机的运行方法,尤其是多缸均质充量压缩点火(HCCI)发动机
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摘要
A multicylinder homogeneous charge compression ignition (HCCI) engine with a control system designed to maintain stable HCCI combustion during engine speed/load transitions by: (1) determining “combustion parameter” values such as the maximum rate of pressure rise for each cycle of each cylinder, (2) adjusting engine operating parameters (such as charge-air intake temperature, intake pressure (boost), or charge-air oxygen concentration) to effect a change in the combustion parameter value, (3) thereafter adjusting an engine “control parameter” (e.g., commanded fuel quantity) to each cylinder to maintain a desired target for the combustion parameter value (such as 10 bar/crank angle degree, or a smaller value, such as 6 bar/crank angle degree), and (4) individually adjusting cooling, heating and/or fuel command to deviating cylinders to achieve uniform combustion.
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机译:具有控制系统的多缸均质充气压缩点火(HCCI)发动机,其设计通过以下步骤在发动机转速/负载转换期间保持稳定的HCCI燃烧:(1)确定“燃烧参数”值,例如每个循环的每个循环的最大压力上升率气缸;(2)调节发动机工作参数(例如增压空气进气温度,进气压力(增压)或增压空气氧气浓度)以改变燃烧参数值,(3)之后调节发动机“控制”参数”(例如,命令的燃油量)传递给每个气缸,以维持燃烧参数值(例如10 bar /曲轴角度,或更小的值,例如6 bar /曲轴角度)的期望目标,并且(4 )分别调整冷却,加热和/或燃油指令以使气缸偏离以实现均匀燃烧。
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