汽車專業(yè)英語(幻燈片)chapter 4 body

1、body question 1: list the types of body. separate frame construction unitized body construction semi-integral body construction seaspecial english for automobile chapter 4 braking system and body construction a separate frame must be light yet strong enough to resist the various loads and road force

2、s. commercial vehicles normally use a separate steel frame to provide the rigidity needed to support the various loads. the two long side members of channel section are riveted to a number of cross members to give a low weight frame which offers great resistance to bending, twisting. 分離式車架必須足夠輕巧而且結(jié)實(shí)

3、，以承受變化的分離式車架必須足夠輕巧而且結(jié)實(shí)，以承受變化的 載荷和路面作用力。商用車通常使用分離式鋼質(zhì)車載荷和路面作用力。商用車通常使用分離式鋼質(zhì)車 架，以獲得較好的剛度來承受變化的載荷。兩根槽架，以獲得較好的剛度來承受變化的載荷。兩根槽 形的長縱梁鉚接著很多橫梁，這使車架重量較輕，形的長縱梁鉚接著很多橫梁，這使車架重量較輕， 具有較好的抗彎和抗扭能力。具有較好的抗彎和抗扭能力。 seaspecial english for automobile chapter 4 braking system and body construction most cars use a unitized bo

4、dy construction, a combined body and frame. unitized body construction is lighter than body/frame construction, but noisier. rubber mounts are used between the body section and mechanical parts to absorb vibrations. the floor pan is made of sections that support the rear suspension and the transmiss

5、ion. 多數(shù)轎車采用承載式車身，也就是車身和車架融為多數(shù)轎車采用承載式車身，也就是車身和車架融為 一體。承載式車身比非承載式車身質(zhì)量輕，但噪聲一體。承載式車身比非承載式車身質(zhì)量輕，但噪聲 大。在車身和機(jī)械部件之間安裝橡膠塊以吸收振動大。在車身和機(jī)械部件之間安裝橡膠塊以吸收振動 。地板由一些支撐后懸架和變速器的部件組成。地板由一些支撐后懸架和變速器的部件組成。 seaspecial english for automobile chapter 4 braking system and body construction modern cars have a blend-air system t

6、hat mixes warm and unwarmed air to heat the car. the heart of the system is the heater core. hot engine coolant flows from the radiator, through the water pump hoses, and to the heater core. therefore, the heater core is always hot. the temperature of air entering the passenger compartment is contro

7、lled by the amount of air moving through the heater core. this heated air is blended with fresh, cool air that bypasses the heater. small doors in the heating system regulate the air-flow. control levers on the dash panel open and close these doors to direct air to the heat ducts and window defroste

8、rs. 多數(shù)汽車采用加熱過的或未加熱過的空氣的混合起來加熱汽車。多數(shù)汽車采用加熱過的或未加熱過的空氣的混合起來加熱汽車。 暖風(fēng)系統(tǒng)的核心是熱芯。熱的冷卻水來自散熱器，通過水泵軟管暖風(fēng)系統(tǒng)的核心是熱芯。熱的冷卻水來自散熱器，通過水泵軟管 流到熱芯。這樣，熱芯總是熱的。流經(jīng)熱芯的空氣數(shù)量控制著進(jìn)流到熱芯。這樣，熱芯總是熱的。流經(jīng)熱芯的空氣數(shù)量控制著進(jìn) 入車廂的空氣溫度。加熱后的空氣同流經(jīng)加熱器的新鮮冷空氣混入車廂的空氣溫度。加熱后的空氣同流經(jīng)加熱器的新鮮冷空氣混 合。加熱系統(tǒng)中的一些小風(fēng)門控制空氣的流量。前圍板上的控制合。加熱系統(tǒng)中的一些小風(fēng)門控制空氣的流量。前圍板上的控制 桿開啟和關(guān)閉這些風(fēng)門，

9、從而將空氣引入輸熱管和風(fēng)窗除霜器。桿開啟和關(guān)閉這些風(fēng)門，從而將空氣引入輸熱管和風(fēng)窗除霜器。 seaspecial english for automobile chapter 4 braking system and body construction the purpose of venting systems is to draw in fresh air and remove stale air from the interior of the car. fresh air venting systems direct air to two different places. first

10、, they can direct outside air into the heater housing. this air either can bypass the coil or it can be heated by the coil. second, the air can move directly into the passenger compartment through small vent doors in the dash panel or at floor level. venting also can take place by opening the window

11、s. 通風(fēng)系統(tǒng)吸入新鮮的空氣，排除車內(nèi)不新鮮的空氣。通風(fēng)系統(tǒng)吸入新鮮的空氣，排除車內(nèi)不新鮮的空氣。 通風(fēng)系統(tǒng)將新鮮空氣引入兩個地方。首先，通風(fēng)系統(tǒng)通風(fēng)系統(tǒng)將新鮮空氣引入兩個地方。首先，通風(fēng)系統(tǒng) 將外部空氣引入加熱器殼里，空氣從線圈旁流過或被將外部空氣引入加熱器殼里，空氣從線圈旁流過或被 線圈加熱。其次，空氣可通過前圍板或地板上的小風(fēng)線圈加熱。其次，空氣可通過前圍板或地板上的小風(fēng) 門直接將空氣引入車廂門直接將空氣引入車廂. 打開車窗也可實(shí)現(xiàn)通風(fēng)。打開車窗也可實(shí)現(xiàn)通風(fēng)。 seaspecial english for automobile chapter 4 braking system and b

12、ody construction levers and switch to regulate air and heat are located on the dash panel. some heater controls use small vacuum motors for simpler, more positive action. others use cables, while some use a combination of the two. the vacuum to operate the motors comes from the engine intake manifol

13、d. 控制空氣和熱量的杠桿和按鈕安裝在儀表板上一控制空氣和熱量的杠桿和按鈕安裝在儀表板上一 些加熱器的控制器使用真空電動機(jī)提供簡單可靠的些加熱器的控制器使用真空電動機(jī)提供簡單可靠的 工作另一些使用纜線，還有一些兩者兼用驅(qū)動工作另一些使用纜線，還有一些兩者兼用驅(qū)動 電動機(jī)的真空來自發(fā)動機(jī)的進(jìn)氣管電動機(jī)的真空來自發(fā)動機(jī)的進(jìn)氣管 seaspecial english for automobile chapter 4 braking system and body construction question 2: list the parts of a/c system. seaspecial eng

14、lish for automobile chapter 4 braking system and body construction as the compressor raises the pressure of the refrigerant, it also heats it. the hot refrigerant is then pumped into the condenser, where it cools by giving off heat to air passing over the condenser fins. as the refrigerant cools, it

15、 condenses into a liquid. still under high pressure, the refrigerant passes into the receiver. the receiver acts as a storage tank to furnish refrigerant to the expansion valve at all times. from the receiver, the high-pressure liquid refrigerant passes to the expansion valve. 壓縮機(jī)增加制冷劑的壓力，對制冷劑進(jìn)行加熱。高

16、溫的制壓縮機(jī)增加制冷劑的壓力，對制冷劑進(jìn)行加熱。高溫的制 冷劑被吸入冷凝器中，將熱量釋放給流經(jīng)冷凝器散熱片的冷劑被吸入冷凝器中，將熱量釋放給流經(jīng)冷凝器散熱片的 空氣而得到冷卻。制冷劑冷卻時冷凝為液體。在高壓作用空氣而得到冷卻。制冷劑冷卻時冷凝為液體。在高壓作用 下，制冷劑進(jìn)入儲液器。儲液器不斷地給膨脹閥供應(yīng)制冷下，制冷劑進(jìn)入儲液器。儲液器不斷地給膨脹閥供應(yīng)制冷 劑。高壓液態(tài)的制冷劑從儲液器流向膨脹閥。劑。高壓液態(tài)的制冷劑從儲液器流向膨脹閥。 seaspecial english for automobile chapter 4 braking system and body construct

17、ion the expansion valve controls the flow of refrigerant into the evaporator, where a low pressure is maintained by the suction side of the compressor. as it enters the evaporator, the refrigerant begins to boil by absorbing the heat from the air passing over the evaporator core. having given up its heat to boil the refrigerant, the air is cooled and passes into the passenger compartment. the refrigerant continues to boil in the evaporator until all the liquid has vaporized. from the evaporator, the refrigerant flows back to the compressor to r