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Development of DOHC VTC 0.66 L Gasoline Engine for New K-car

Article of Honda R&D Technical Review Vol.24 No.1

Summary

A lightweight, compact DOHC VTC 0.66-L 3-cylinder gasoline engine was developed for use in K-cars, achieving a balance of environmental performance (low fuel consumption and low emissions) and high power output. The new model engine was developed on the assumption that it would be combined with a newly developed continuously variable transmission (CVT) for k-cars. It was accordingly given a long-stroke structure and variable timing control (VTC) on the intake side as well as technology for enhancement of combustion and friction reduction. These measures achieved high power with maximum torque of 65 Nm and maximum power of 43 kW in the naturally aspirated engine together with 10% enhancement in specific fuel consumption over the previous engine model. In the turbocharged engine, use of a higher compression ratio in addition to fuel consumption enhancement technology in common with that of the naturally aspirated engine achieved a 10% enhancement in specific fuel consumption over the previous engine model as well as maximum torque at the high level of 104 Nm.

Reference

(1) Wada, Y., Ohtsu, K., Narita, K., Shinohara, T.: Development of i-DSI 2Plug Engine for 2004 Model Year Honda LIFE, Honda R&D Technical Review, Vol. 16, No. 1, p. 93-102
(2) Nakayama, Y., Suzuki, M., Iwata, Y., Yamano, J.: Development of a 1.3L 2-Plug Engine for the 2002 Model “Fit,” Honda R&D Technical Review, Vol. 13, No. 2, p. 43-52
(3) Akimoto, K., Komatsu, H., Kurata, A.: Construction of Knock Detection Logic by Pattern Recognition Using Short-time Fourier Transform, Honda R&D Technical Review, April, 2012, p. 128-135

Author (organization or company)

Ryutaro TAGISHI(Automobile R&D Center)、Shigemi KOBAYASHI(Automobile R&D Center)、Junya IINO(Automobile R&D Center)

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