摘要
基于一台型号为NT6135ZCzA的渔船用增压柴油机,加装了一套LNG多点喷射供给装置和油泵齿条限制机构;利用Infineon高性能32位TC1766单片机开发了柴油-LNG双燃料发动机电控硬件系统,并设计了混燃调速控制策略及燃烧模式切换控制策略。台架试验证明改装后的柴油-LNG双燃料发动机在替代率为70%时,扭矩与原柴油机相比下降1.6%,两者基本相当,碳烟排放减少,排气温度降低。采用本系统设计的混燃调速方案二在低负荷和中高负荷区的燃料经济性均高于方案一,通过燃烧模式切换策略,在负荷低于35%时自动切换到纯柴油模式,可进一步改善低负荷区的燃料经济性。
In model NT6135ZCzA supercharged diesel engine of fishing vessel, a set of LNG multi- point injection supply device and pump rack control mechanism was installed. The Infineon TC1766, a high- performance 32-bit MCU was used to develop the electronic control hardware system for the diesel-LNG dual engine. The speed control strategy in duel fuel mode and the mode switch-over strategy were also designed. Experimental results show that torque developed in dual fuel mode of 70 % substitution reduces by only 1.6 and soot emission and exhaust temperature lower. The second scheme of the dual fuel mode speed control in low and higher load regions has higher fuel economy than the first scheme. The low load fuel economy could be further improved when using＇the strategy to switch automatically duel fuel mode to pure diesel mode in the load range less than 35%.
出处
《内燃机工程》
EI
CAS
CSCD
北大核心
2015年第1期75-80,共6页
Chinese Internal Combustion Engine Engineering
基金
天津市科委科技支撑重点项目(12ZCZDGX03800)
关键词
内燃机
渔船用柴油机
天然气
双燃料
电控
IC engine
fishing vessel diesel engine
liquefied natural gas（LNG）
dual fuel
electronic control
