摩托车燃油蒸发污染物排放测试浅析（1）

要保证燃油蒸发测试的准确性，首先应确保车辆状态的稳定，包括炭罐的老化、炭罐正常的吸附、脱附，及油气管路的正确连接等。对燃油蒸发测试结果影响最大的因素是油品和试验用油的蒸气压，只有在试验用油和燃油蒸气压一致的条件下，各种测试结果才有可比性。因此，日后在进行燃油蒸发试验时应重点关注燃油的蒸气压。

A Brief Analysis of Fuel Evaporative Emissions Test for Motorcycles(1)

In order to ensure the accuracy of the fuel evaporation test, the first thing to do is to ensure the stability of the motorcycle state, including the ageing of the canicter, normal adsorption and deadsorption of the canister and the correct connection of the fuel and its air piples. The major factor influencing the result of the fuel evaporation test is the fuel quality and the vapor pressure of the fueled used. Only the fuel pressure of the test and the fuel vapor pressure are identical, can the test results have comparabilities. So more attention should be paid to the vapor pressure of the fuel when conducting the fuel evaporation test in the future.