Abstract
In this study, inverse differential gear and power mode switching control were used to develop a hybrid electric motorcycle (HEM). An inverse differential gear power splitter was installed to integrate or distribute the power of an internal combustion engine (ICE), thus achieving single/dual power output. In addition, the transmission system was configured with continuously variable transmission to adjust the transmission speed reduction ratio and stabilize the power output. As a result, three power modes (i.e., the motor drive mode, ICE drive/generator mode, and dual power drive mode) could be switched between each other smoothly. Finally, our HEM was tested by a chassis power gauge. The test results showed that the HEM consumed 41.1% less fuel and produced 58.6% less exhaust emissions compared with conventional ICE motorcycles. In terms of controllability, the acceleration time for 0–100 m was 2.4 s less than the Taiwan E-scooter Standard (TES). The fastest highest vehicle speed was 2.1 times greater than the test of the TES.
Highlights
To alleviate the effects of global warming caused by greenhouse gas emissions, governments across the world are actively promoting the development of sustainable energy and green industries as well as the reduction of carbon emissions
Taiwan must be pure electric motorcycles, hybrid electric motorcycles, or motorcycles with a start–stop function that meets the idling emission standards and hydrocarbon (HC) emission standards for the motorcycle crankcase, fuel tank, and fuel supply system set by the Taiwan Environmental Protection
The inverse inverse differential differential gear gear power power splitter splitter used used in in this this study study was was developed developed by by our our group group and and
Summary
To alleviate the effects of global warming caused by greenhouse gas emissions, governments across the world are actively promoting the development of sustainable energy and green industries as well as the reduction of carbon emissions. In response to this trend, electric vehicles have been listed as an important development objective for the automobile industry in Taiwan, the electric motorcycle. To comply with this regulation, the Taiwan Industrial Development Bureau has been promoting electric motorcycles since 2009. As of March 2019, the total number of electric motorcycles in use was only 176,000.
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