| 英文摘要 |
This project has completed the following objectives: collected foreign countries’ vehicle test data on CO2 emissions; surveyed current available energy saving technologies and CO2 control strategies in the world; took the trends of regulatory frameworks being implemented by advance countries as basis to propose future vehicle CO2 emissions reduction strategies in Taiwan.
Current investigations show that BMW, Mercedes-Benz and Hotai Motor of the Voluntary Agreement signees have achieved their targets of 15% CO2 reduction. Through the Voluntary Agreements, about 36,151 tons of CO2 reduction has been accomplished in recent three years.
Considered the linear vehicle mass in Europe and footprint in US were used as control parameter units for their mandatory CO2 emissions standards, the advantages and weakness were the discussion topics for two experts meetings held by this project. Take current conditions of vehicle industry in Taiwan into consideration, the linear vehicle mass based CO2 emissions standards are more viable, and may be adjusted in the future if conditions of vehicle industry have changed. Two different vehicle CO2 emission standards were being proposed in this project. The first one is to set more stringent vehicle fuel economy standards, and the second one is to adopt corporate average emission standards, in which the average 205g/km of CO2 emissions from new light duty trucks (under 2,500 kg), vans, and SUVs was set as our national target to be achieved by 2015. Two slopes for the control target lines and flexible measures were provided to mitigate impacts on manufacturers.
Both the EU and the US test driving cycles are recognized in Taiwan, to avoid inconsistent of the two test procedures and not to add burdens on manufacturers, this project tested 28 light duty trucks (under 2,500 kg), vans, and SUVs, performed best fit of the test results to get conversion factors between the two driving cycles. The results show that the conversion factors for light duty trucks (under 2,500 kg), vans, and SUVs with different engine sizes were between 1.04 and 1.30, the effect of turbo charge and fuel types were not relevant. A single conversion factor of 1.15 is proposed to be used as shown in the following formula: NEDC_CO2= FTP_CO2*1.15.
Finally, to increase Taiwan’s international visibility and declare our determination to reduce CO2 emissions from vehicles, this project has submitted its execution summary report to an international journal and expects to be published in the future.
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