Development of Direct Injection Technology for Motorcycle Gasoline Engine
- Delivery
- Available on this site
- Format
- Price
- Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880
- Publication code
- 20239550
- Paper/Info type
- SETC
No.2023-01-1850
- Pages
- 1-9(Total 9 p)
- Date of publication
- Oct 2023
- Publisher
- JSAE & SAE
- Language
- English
- Event
- Small Powertrains and Energy Systems Technology Conference 2023
Detailed Information
| Author(E) | 1) Masahito Saitou, 2) Atsushi Hisano, 3) Yota Sakurai, 4) Yoshimoto Matsuda, 5) Satoaki ichi |
|---|---|
| Affiliation(E) | 1) Kawasaki Heavy Industries, Ltd., 2) Kawasaki Heavy Industries, Ltd., 3) Kawasaki Heavy Industries, Ltd., 4) Kawasaki Heavy Industries, Ltd., 5) Kawasaki Motors, Ltd. |
| Abstract(E) | The authors developed a gasoline engine that combined direct injection and port fuel injection in order to improve fuel economy for motorcycles. Compared to passenger car engines, motorcycle engines generally have smaller displacement and operate at higher engine speed, so the bore and stroke are generally smaller than those of passenger cars. Therefore, the direct injection spray characteristics optimized for small bore and stroke were selected to reduce fuel adhesion to various parts of the combustion chamber wall. In addition, this engine employed the high tumble intake port that can both strengthen turbulence intensity and suppress the decrease in volumetric efficiency to a lower level. Also, stratification of air-fuel mixture and split injection were employed for reducing catalyst warm-up time and soot. The results showed that excellent fuel economy was achieved without sacrificing engine output performance while meeting emissions regulations. |
