CAJ | 학술논문

针对城市公交车运行特点和在城市运行工况下燃油经济性差的问题，提出一种新型液压混合动力系统，并建立制动回收过程动力学模型、能量再生过程动力学模型和柴油机液压起动模型等，对其制动性能进行仿真，最后进行了样机台架、实车道路试验。试验结果表明，该液压混合动力公交车可实现汽车制动能量回收等功能，在典型城市循环工况下制动能量回收率为69.7%，制动能量再生率为32.8%，液压起动发动机时间为1.7 s。
침대성시공교차운행특점화재성시운행공황하연유경제성차적문제，제출일충신형액압혼합동력계통，병건립제동회수과정동역학모형、능량재생과정동역학모형화시유궤액압기동모형등，대기제동성능진행방진，최후진행료양궤태가、실차도로시험。시험결과표명，해액압혼합동력공교차가실현기차제동능량회수등공능，재전형성시순배공황하제동능량회수솔위69.7%，제동능량재생솔위32.8%，액압기동발동궤시간위1.7 s。
In consideration of city buses operating characteristics and poor fuel economy in urban driving cycles, we present a novel hydraulic hybrid system, and build three models, i.e. brake energy recovery dynamic model, energy regeneration dynamic model and diesel hydraulic start model, and then make brake performance simulation. Finally we test performance of the system by bench and road test. The results show that the hydraulic hybrid bus is capable of braking energy recovery, braking energy recovery rate in typical urban driving cycle is up to 69.7 % and energy regeneration rate is 32.8%, hydraulic engine start time is 1.7 second.