This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Flexible-Fuel System for Small Motorcycles
Technical Paper
2009-32-0044
Annotation ability available
Sector:
Language:
English
Abstract
A flexible-fuel system for small motorcycles has been developed that can utilize both gasoline, and ethanol as an alternative to fossil fuel. For practicality, we aimed to develop a system that uses a minimum of additional parts. As a method to make both ethanol and gasoline available with the system, a control algorithm that estimates the ethanol concentration by utilizing the output voltage of an OXYGEN SENSOR and selects the appropriate injection quantity is employed. Usually, in automotive flexible-fuel vehicles (FFV), sub-tanks are mounted to ensure engine startability in cold temperatures. However, in small motorcycles, limitations of mounting space must be addressed. In this system, by clarifying the control logic and determining the difficult cases for cold temperature starts due to high ethanol concentration, configuring the indicator to promote gasoline mixture when the start is difficult enabled the elimination of the sub-tanks. This flexible-fuel system has been mounted on 150cm3-single-cylinder motorcycles, resulting in an increase in weight of approximately 500g. The system is suitable for mass-production.
Recommended Content
Authors
Citation
Ito, A., Yamada, H., Horie, H., Kubota, T. et al., "Flexible-Fuel System for Small Motorcycles," SAE Technical Paper 2009-32-0044, 2009.Also In
References
- Saiki, R. Nakajima, S. Nakashima, H. Miki, K. Oki, H. Goryozono, Y. Development of 1.8L Flexible Fuel Vehicle System for 2007 Model Year CIVIC for Brazil HONDA R&D Technical Review 19 1 13 19 2007
- Nakata, K. Utsumi, S. The Effect of Ethanol Fuel on a Spark Ignition Engine SAE paper 2006-01-3380 2006
- Twarada, Y. Kanbe, T. Yasda, Y. Yabe, H. Yokoyama, H. Development of 4-stroke Engine for Small Motorcycle with Low Fuel Consumption and High Performance for Brazil HONDA R&D Technical Review 16 2 65 70 2004
- Ueno, M. Ueda, M. Udono, T. Akamatsu, S. Torikai, M. Fukuda, M. Development of Small Fuel Pump Module for Motorcycle HONDA R&D Technical Review 20 1 82 86 2008