汽車專業(yè)畢業(yè)設(shè)計外文翻譯--srs安全氣囊和空調(diào)系統(tǒng)-汽車設(shè)計(參考版)
2025-05-16 22:47本頁面
【正文】 附上英文原文，用 A4 紙。 頁邊距左邊 ，右邊 ,上下邊距 。 a frozen evaporator coil will not absorb as much heat. Thermal expansion valve Another mon refrigerant regulator is the thermal expansion vale. This type of valve can sense both temperature and pressure, and is very efficient at regulating refrigerant flow to the evaporator. Several variations of this valve are monly found. Another example of a thermal expansion valve is Chrysler’s “H block” type. This type of valve is usually located at the firewall, between the evaporator inlet and outlet tubes and the liquid and suction lines. These types of valves, although efficient, have some disadvantage over orifice tube systems. Like orifice tubes these valves can bee clogged with debris, but also have small moving parting that may stick and malfunction due to corrosion. Receiverdrier The receiverdrier, shown in , is used on the high side of systems that use a thermal expansion valve. This type of the metering valve requires liquid refrigerant. To ensure that the valve gets liquid refrigerant, a receiver is used. The primary function of the receiverdrier is to separate gas and liquid. The secondary purpose is to remove moisture and filter out dirt. The receiverdrier usually has a sight glass in the top. This sight glass is often used to charge the system. Under normal operating conditions, vapor bubble should not be visible in the sight glass. The use of the sight glass to charge the system is not remended in R134a systems as cloudiness and oil that has separated from the refrigerant can be mistake for bubbles. This type of mistake can lead to a dangerous overcharged condition. There are variations of receiverdriers and several different desiccant materials are in use. Some of the moisture removing desiccants found within are not patible with R134a. The desiccant type is usually identified on a sticker that is affixed to the receiverdrier. Newer receiverdrier use desiccant type XH7 and are patible with both R12 and R134a refrigerants. 備注： 英文原文出處包括出版社、出版時間、期刊的刊名、刊號、刊期。 defined as discharge and suction. Since the pressor is basically a pump, it must have an intake side and a discharge side. The intake, or suction side, draws in refrigerant gas from the outlet of the evaporator. In some case it does this via the accumulator. Once the refrigerant is drawn into the suction side, it is pressed and sent to the condenser, where it can then transfer the heat that is absorbed from the inside of the vehicle. Condenser The condenser has much the same appearance as the radiator in the car since the two have very similar functions. The condenser is designed to radiate heat. Its location is usually in front of the radiator, but in some cases, due to aerodynamic improvements to the body of a vehicle, its location may differ. Condensers must have good airflow anytime the system is in operation. On front wheel drive vehicles, this is usually acplished by taking advantage of your existing engine’s cooling fan. O
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