摘要
混合涡轮增压系统是在常规废气涡轮增压器转轴上集成一个既能电动又能发电的高速电机,介绍了研制这一新型增压系统的关键技术和样机在增压器试验台上的试验研究。等压气机流量试验结果显示:混合涡轮增压系统从功能上达到了电动/发电的设计要求,可以根据负荷调整高速电机的工作模式和功率。混合涡轮增压系统在小流量时电动的潜力大,而在大流量时发电功率大。其次,通过调整混合涡轮增压系统的高速电机功率能够拓宽涡轮膨胀比变化范围。另外,由于采用滚动轴承等措施,样机的机械效率高于常规废气涡轮增压器,试验时最高机械效率达到96%。加速特性试验结果表明:混合涡轮增压系统的加速时间比普通废气涡轮增压器缩短40%以上,并且高速电机的电动功率越大,改善涡轮滞后的效果越显著。
Hybrid turbocharging system for diesel engine consists of a conventional turbocharger and a high-speed motor integrated into the turbocharger shaft.The key techniques for design of the hybrid turbocharging system and results of the prototype test on turbocharger test bench were described.The compressor equal flow-rate experiment shows that the hybrid turbocharging system can meet the design requirements as the driving motor and braking generator,working mode and power of the high-speed motor can be adjusted according to the actual load.The high-speed motor in driving mode can provide greater power in smaller flow-rate of the compressor,while the motor in generator mode can generate more electrical power in greater flow-rate.The test results also show that the power adjustment of high-speed motor can broaden the working zone of expansion ratio of the turbine of hybrid turbocharging system.The test data also exhibit that the prototype has higher mechanical efficiency than conventional turbocharger owing to using rolling bearings,the maximum mechanical efficiency reaches 96 %.The acceleration test reveals that the hybrid turbocharging system acceleration time shortens by over 40 % than conventional turbocharger,the greater the electric motor power,the more remarkable the turbo lag improvement.
出处
《内燃机工程》
EI
CAS
CSCD
北大核心
2011年第2期23-27,共5页
Chinese Internal Combustion Engine Engineering
关键词
内燃机
车用柴油机
混合涡轮增压
高速电机
样机研制
台架试验
IC engine
vehicle diesel engine
hybrid turbocharging
high-speed motor
prototype development
bench test
