Development of NVH Design Technology for High Combustion Speed of 3rd-Generation 100% Electric Drive Hybrid Powertrain

Shinpei Kondo･Hiroshi Matsuo･Tsuyoshi Kozima･Yoshihide Kawasaki (Nissan Motor)

High combustion speed for thermal efficiency improvement is generally trade-off with engine noise.In the newly developed powertrain, while improving fuel consumption by increasing combustion speed, achieve top-level quietness by the exciting force reduction reconsidering the engine main moving body structural system and lighter weight,higher rigidity of whole module, and solve trade-off.

Quietness development of a new electric vehicle with a third-generation e-POWER unit

syuuichi Etori･Takayuki Miyakawa･Shinichi Suganuma･Yukihiro Mori (Nissan Motor)

Third-generation e-POWER unit was developed to balance between high efficiency and low noise by high-speed combustion and 5-in-1. This paper introduces the evolution of the e-POWER unit and the technology development to apply to the vehicle from quietness point of view.

Development of integrated 3-in-1 ePT and dedicated EV platform for PT NVH improvement

Kazuhiko Arai･Hiroshi Matsuo･Tsuyoshi Kozima･Yasuyuki Asahara･Akihiro Hisada (Nissan Motor)

In the electric vehicle (EVs) with high quietness, the importance of the noise and vibration performance of the electric power train (ePT) is increasing. Although having continued to receive high evaluation before, in order to make customers feel more attractive, a top level of quietness has been realized by the development to make 3-in-1 lightweight and high-rigidity and to make EV Platform Optimized for ePT System.

Development of quietness for next　generation electric vehicle with 3in1 unit

Yoshihiro Ando･Takayuki Miyakawa･Shinichi Suganuma･Yukihiro Mori (Nissan Motor)

This paper introduces the technology to improve the quietness of the next generation electric vehicle with 3in1 unit on the platform for electric vehicle. Compared with previous model, it has evolved by sound insulation performance, and improved such as powertrain noise performance by applying to "high-rigidity platform" "high-performance anti-vibration system" and "3in1 unit".