加利福尼亚大学进行了为期两年的研究,考察非公路设备采用混合动力来降低NOx排放的效果是否会优于现代柴油机。需要声明一点,肯特·约翰逊(Kent Johnson)本人并不反对混合动力发动机系统。约翰逊是加利福尼亚大学河滨分校排放和燃料研究机构的首席研究员。他坦言说到:“我真的很喜欢混合动力,我觉得有它适用的地方。”但是在伯恩斯学院环境研究和技术工程中心(CE-CERT)由约翰逊带领 The University of California conducted a two-year study examining whether hybrid road-use equipment to reduce NOx emissions would outperform modern diesel engines. Need to state that Kent Johnson himself is not opposed to hybrid engine systems. Johnson is the lead researcher at the University of California Riverside Emissions and Fuel Research Institute. He said frankly: “I really like hybrid, I think there is a place for it. ” But led by Johnson at the Burns Institute for Environmental Studies and Technical Engineering (CE-CERT)