Single-cylinder 125 cc Stepped-piston Engine for Mobility and Portable Power Generation Applications
Corresponding email: azhar@fkm.utm.my
Published at : 29 Feb 2016
Volume : IJtech
Vol 7, No 2 (2016)
DOI : https://doi.org/10.14716/ijtech.v7i2.2974
Aziz, A.A., Sumeru, K., Said, M.F.M., Perang, M.R.M.P., Nasution, H., 2016. Single-cylinder 125 cc Stepped-piston Engine for Mobility and Portable Power Generation Applications. International Journal of Technology. Volume 7(2), pp.352-361
| Azhar Abdul Aziz | Automotive Development Centre, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, Johor 81310, Malaysia |
| Kasni Sumeru | Automotive Development Centre, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, Johor 81310, Malaysia |
| Mohd Farid Muhammad Said | Automotive Development Centre, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, Johor 81310, Malaysia |
| Mohd Rozi Mohd Perang Perang | Automotive Development Centre, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, Johor 81310, Malaysia |
| Henry Nasution | Automotive Development Centre, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, Johor 81310, Malaysia |
Two-stroke engines are far simpler than four-stroke engines from a physical perspective. For a given brake output, two-stroke engines are lighter, easier to work on, and provide higher power-to-weight ratio than four-stroke engines, making them suitable for small platform applications. However, conventional two-stroke engines have a reputation for generating smoke and unburned fuel, meaning they may not meet many emissions regulations, now enforced around the world. Thus, for many decades two-stroke engines have not been not favored, giving way to four-stroke engines for dominant applications, especially for mobile power-generation purposes. In the quest to improve the potential of such an engine, a group of researchers from the Automotive Development Centre (ADC), Universiti Teknologi Malaysia (UTM), has developed a 125 cc, air-cooled stepped-piston engine to demonstrate the higher power-to-weight ratio feature, apart from overcoming emission reduction. The engine is designed to mitigate the problem of mixture short circuiting, which is the major hindrance to combustion efficiency. To this end, they have incorporated a three-port stratification strategy into the engine. This paper provides an overview related to the earlier work done to integrate the necessary features and highlights some of the performance features of this unique engine design
Design, Engine, Prototype, Stepped-piston, Two-stroke
Blair, G.P., 1996. Design and Simulation of Two-Stroke Engines, SAE Publication
Breathe, 2015. The Stepped Piston Engine. Available online at: www.breathe.com
Cycle World, 2014. Why No Modern Two-Stroke Streetbikes. Available online at: www.cycleworld.com
Heywood, J.B., 1998. Internal Combustion Engine Fundamentals, McGraw Hill, New York City, New York, USA
Lotus Cars, 2015. Omnivore Research Engine, Case study omnivore research engine, Lotus Engineering News. Available online at: www.lotuscars.com
Manufacturer of Emission Control Association, 2008. Report on Emission Control of Two- and Three-Wheel Vehicles Washington, D.C., USA.
Nomura, K., Nakamura, N., 1993, Development of a New Generation Two-stroke Engine with Poppet-valve: Toyota S-2 Engine. A New Generation of Two-Stroke Engines for the Future, Edition Technip, pp. 53–62
The Economist, 2010. The Difference Engine: Twice the Bang for the Buck. The Economist Group, London, United Kingdom
TheKneeSlider, 2015. Eco Motors OPOC Two Stroke Engines – Opposed Piston Opposed Cylinder, The Knee-slider. Available online at: thekneeslider.com
US EPA, 2002. Emission Standards for New Non-road Engines, EPA Regulatory Announcement, EPA420-F-02-03