充分利用油罐本身的承压能力来减少油蒸气排放，其原理是利用阀盘的重量来控制油罐的呼气正压和吸气负压。
Full use of its bearing capacity of the tank to reduce the oil vapor emissions, the principle is to use the weight of the valve plate to control the breath pressure and suction tank negative pressure.
本文介绍了一套燃油蒸发排放控制系统(EE CS)，此系统主要包括炭罐、清洗阀、油气分离器、翻车阀等。
In this paper, an EECS (Evaporation Emissions Control System), which includes the canister, purge valve, vapor-liquid separator, rollover leakage protection valve, is designed and tested.
水力控制阀排放能量不够，调节阀会造成凝结水不能及时排出，降低加热设备的热效率。
Hydraulic control valve is not enough energy emissions will cause condensation water can not discharge in time, reducing the thermal efficiency of heating equipment.
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