Development of the Second-Generation VC-TURBO, KR15DDT Engine

Authors

Y. Tsuchiya, K. Matsuoka, S. Kiga, N. Hiraki, Y. Tanaka, Nissan Motor Co., Ltd.

Summary

In 2018, commercial production started for the KR20DDET, the world’s first engine fitted with a Variable Compression Ratio System, VC-TURBO. As the second-generation VC-TURBO, Nissan has recently developed the KR15DDT, a 1.5 L, three-cylinder direct injection turbo engine combined with the cooled-EGR system that balances power performance with reducing environmental impact by further improvement of thermal efficiency and other aspects for application to core models. We challenged Noise and Vibration (NV) performance of high power and high torque three-cylinder engine by adopting the VC-Turbo’s multi-link mechanism and an outer balancer. On that basis, the development of the second-generation VC-Turbo combined with cooled-EGR system is presented, focusing on its response and NV performance.

Members Login