Overview of Emission Reduction Technology Development on Motorcycle Application in Taiwan

Abstract

<div class="htmlview paragraph"> </div> <div class="htmlview paragraph"> </div> <div class="htmlview paragraph">Five systems, fuel injection, ignition modulation, intake port flow control, exhaust after-treatment, and electric propulsion systems, are discussed here in terms of engine design modifications and new systems retrofitted to the motorcycle to reduce the exhaust emission.</div> <div class="htmlview paragraph"> </div> <div class="htmlview paragraph">A fuel injection system has been implemented to a 125cc air-cool four-stroke engine, and the results show that the improvement on the fuel economy, reduction of emission on HC and CO, and the fuel economy are 20%, 68%, and 10% respectively. By implementing the electrical ignition system into the target engine, the fuel economy and emission have slightly improved. The application of the inlet air flow control to a target engine also obtains 75% on CO reduction. The effectiveness of the exhaust after-treatment on a 80cc 2-stroke engine has demonstrated that the emission can be reduced up to 75%. The last emission reduction development is the electric propulsion system development which provide a zero emission and better energy efficiency solutions for the future motorcycle usage in the urban areas.</div> <div class="htmlview paragraph"> </div> <div class="htmlview paragraph">The authors will overview the development methodologies of the mentioned systems and the effectiveness of emission and fuel economy improvement from these engineering efforts in this article.</div> <div class="htmlview paragraph"> </div>