Abstract

Honda has developed the first-ever 2.0L i-VTEC I direct injection gasoline engine employing a center injection system in which a high-pressure fuel injector is located in the center of the combustion chamber. This engine significantly improved fuel economy and emissions performance. Optimization of in-chamber fuel flow through redesign of piston shape and the spray characteristics of the high-pressure fuel injector and the application of VTEC has enabled the achievement of stable combustion of a stratified ultra-lean air-fuel mixture. Due to VTEC mechanism and the continuous variation of camshaft phase enabled by VTC, the engine has achieved top-class power for a high fuel economy engine. The new engine is fitted in the 2004 model Stream, and in combination with the CVT employed in the vehicle has enabled the Stream to achieve a low fuel consumption figure of 15.0 km/l in Japanese 10-15 mode. A large amount of EGR and a high-performance lean NOx catalyst to reduce emissions has further enabled the Stream to become the first vehicle with an engine employing ultra-lean stratified charge combustion to achieve an emissions level of only 25% of the level stipulated by the Japanese 2000 emissions regulations and obtain Ultra Low Emission Vehicle (ULEV) certification.

References

1. (1) Ashizawa, T., Saitoh, K., Tamura, Y., Sakai, T.: Development of a New In-line 4-cylinder Direct-Injection Gasoline Engine, JSAE Annual Congress Proceedings, No. 71-98, JSAE9838237
2. (2) Norota, K., Harada, J., Abe, S., Yoshioka, Y., Aoyama, K.: Development of a New L-4 Direct Injection SI Gasoline Engine, JSAE Annual Congress Proceedings, No. 78-00, JSAE20005525
3. (3) Niizato, T., Hayashi, A.: Development of New 2.0L Lean-burn Engine, HONDA R&D Technical Review, Vol. 12 No. 2, p. 45-54 (2000)
4. (4) Nakayama, Y., Suzuki, M., Iwata, Y., Yamano, J.: Development of a 1.3L 2PLUG Engine for the 2002 year Model Fit, Honda R&D Technical Review, Vol. 13, No. 2, p. 43-52 (2001)
5. (5) Kuma, T., Iwamoto, Y., Iida, K., Murakami, M., Akishino, K., Ando, H.: Combustion Control Technologies for Direct Injection SI Engine, SAE Paper 960600
6. (6) Okamoto, K., Ichikawa, T., Saitoh, K., Oyama, K., Hiraya, K., Urushihara, T.: Study on Relationship between Octane number and anti-knock performance in Direct Injection Spark Ignition Gasoline Engine, SAE Annual Congress Proceedings, No. 73-02, JSAE20025175

Author (organization or company)

• Yutaka KOHDA（Tochigi R&D Center）
• Tomoji SUGANAMI（Tochigi R&D Center）
• Hiroyuki KOBAYASHI（Tochigi R&D Center）
• Ken OGAWA（Tochigi R&D Center）

Publication Information

Article of Honda R&D Technical Review Vol.16 No.1 (39 - 46)

PDF

Citation Information