况痛悼感川大地感遇同 ●5月12日14时28分,我国四川发生里氏8级地震 ●在地震发生的这一周内,34万同胞遇难,22万余 人受伤 ●国务院已决定: 5月19日~21日为全国哀悼日 5月19日14时28分,全国人民为地震灾区遇 难同胞默哀3分钟 2008年5月19日12时
●5月12日14时28分，我国四川发生里氏8级地震 ●在地震发生的这一周内，3.4万同胞遇难，22万余 人受伤 ●国务院已决定： 5月19日~21日为全国哀悼日 5月19日14时28分，全国人民为地震灾区遇 难同胞默哀3分钟 2008年5月19日12时 沉痛悼念汶川大地震遇难同胞
PROFESSIONAL ENGLISH UNIT 9 AUTOMATIC TRANSMISSIONS TEXTA Automatic Transmission(AT)
UNIT 9 AUTOMATIC TRANSMISSIONS TEXT A Automatic Transmission (AT) PROFESSIONAL ENGLISH
本次课学习内容 uniT 8 AUTOMATIC TRANSMISSIONS TEXTA Automatic Transmission (AT) Torque Converter ● Planetary Gear ● Hydraulic System Servos and accumulators Hydraulic Control System o Electronic Control system
UNIT 8 AUTOMATIC TRANSMISSIONS TEXT A Automatic Transmission (AT) • Torque Converter • Planetary Gear • Hydraulic System Servos and Accumulators Hydraulic Control System • Electronic Control System 本次课学习内容
本次课学习目标 ●掌握自动变速器的有关英文专业词汇 ●能够较好地用已知翻译技巧进行课文翻译 ●训练快速阅读能力,较高的阅读速度
本次课学习目标 ⚫ 掌握自动变速器的有关英文专业词汇 ⚫ 能够较好地用已知翻译技巧进行课文翻译 ⚫ 训练快速阅读能力，较高的阅读速度
NEW WORDS impeller[im'pel]n推进者,叶轮,泵轮 stator ' stent]n定子,导轮 pump [pAmp]n泵,泵轮 standstill[' standstill]n停止,停顿 sphere [sfia] n球,球体,圈子,半球 flatten [" flaetn]v变平,变单调 torus ["t:rs]n圆环面,环形,叶轮,[植]花托 sling [slin] n投掷,抛 Impinge [im'pind]v撞击,打击 fashion ['fae∫an]n.样子,方式,流行,风尚 servo ['s:vu]n伺服,伺服系统 accumulator[" kjumju n蓄能器,蓄压器,集液器, leita] [英]蓄电池 solenoid[ saulinpid]n[电]螺线管
NEW WORDS impeller [im'pelə] n.推进者，叶轮，泵轮 stator ['steitə] n.定子，导轮 pump [pʌmp] n.泵，泵轮 standstill ['stæ ndstil] n.停止，停顿 sphere [sfiə] n.球，球体，圈子，半球 flatten ['flæ tn] v.变平，变单调 torus ['tɔ:rəs] n.圆环面，环形，叶轮，[植]花托 sling [sliŋ] n.投掷，抛 impinge [im'pinʤ] v.撞击，打击 fashion ['fæ ∫ən] n.样子，方式，流行，风尚 servo ['sə:vəu] n.伺服，伺服系统 accumulator [ə'kju:mju leitə] n.蓄能器，蓄压器，集液器， [英]蓄电池 solenoid ['səulinɔid] n.[电]螺线管
PHRASES AND EXPRESSIONS drive plate 传动板 planetary gear set行星齿轮机构 one-way clutch 单向离合器 planetary gearbox行星齿轮变速器太阳轮 sun gear planet carrier 行星架 shift valve 换档阀 governor pressure调速器压力 modulator pressure调压阀压力 line pressure 主油路压力
PHRASES AND EXPRESSIONS drive plate 传动板 planetary gear set 行星齿轮机构 one-way clutch 单向离合器 planetary gearbox sun gear 行星齿轮变速器太阳轮 planet carrier 行星架 shift valve 换档阀 governor pressure 调速器压力 modulator pressure 调压阀压力 line pressure 主油路压力
Automatic Transmission(AT In today's automobile the automatic transmission is by far the most complicated mechanical component. It is a type of transmission that shifts itself. automatic transmission or transaxle has four basic systems-a torque converter, a gear system, a hydraulic system and an electronic system (Fig. 9-1) TORQUE CONVERTER The torque converter replaces the conventional clutch. It has three functions: 1. It allows the engine to idle with the vehicle at a standstill even with the transmission or transaxle in gear[ 1] 2. It allows the transmission or transaxle to shift from range to-range smoothly, without requiring that the driver close the throttle during the shift 3. It multiplies engine torque to an increasing extent as vehicle speed drops and throttle opening is increased this has the effect of making the transmission or transaxle more responsive and reduces the amount of shifting required
Automatic Transmission (AT) In today's automobile, the automatic transmission is by far the most complicated mechanical component. It is a type of transmission that shifts itself. Automatic transmission or transaxle has four basic systems-a torque converter, a gear system, a hydraulic system and an electronic system (Fig. 9-1). TORQUE CONVERTER The torque converter replaces the conventional clutch. It has three functions: 1. It allows the engine to idle with the vehicle at a standstill, even with the transmission or transaxle in gear[1]. 2. It allows the transmission or transaxle to shift from rangeto-range smoothly, without requiring that the driver close the throttle during the shift. 3. It multiplies engine torque to an increasing extent as vehicle speed drops and throttle opening is increased. This has the effect of making the transmission or transaxle more responsive and reduces the amount of shifting required
0@●698 R 。的2个L Drive plate 2. Converter lockup clutch 3. Torque converter p Impeller R. stator T Turbine 4. Clutch a 5. Clutchb 6 Clutch c 7. Clutch 8. Clutchd 9 planetary gear set 10. Planetary gear set, fourth gear 11. Clutch E 12 Clutch F 13. Output 14-17. One-way clutch Fig 9-1 Components of a typical automatic transmission
1. Drive plate 2. Converter lockup clutch 3.Torque converter P. Impeller R. Stator T. Turbine 4.Clutch A 5. Clutch B 6. Clutch C' 7. Clutch C 8. Clutch D 9. Planetary gear set 10. Planetary gear set, fourth gear 11. Clutch E 12. Clutch F 13. Output 14-17. One-way clutch Fig. 9-1 Components of a typical automatic transmission
The torque converter is a metal case which is shaped like a sphere that has been flattened on opposite sides it is bolted to the rear end of the engine' s crankshaft. generally the entire metal case rotates at engine speed and serves as the engine's flywheel The case contains three sets of blades(Fig. 9-2). One set is attached directly to the case. This set forms the torus or pump Another set is directly connected to the output shaft, and forms the turbine. The third set is mounted on a hub which in turn is mounted on a stationary shaft through a one-way clutch. This third set is known as the stator. a pump, which is driven by the converter hub at engine speed keeps the torque converter full of automatic transmission fluid at all times. fluid flows continuously through the unit to provide cooling Under low speed acceleration the torque converter functions as follows The torus is turning faster than the turbine It picks up fluid at the center of the converter and through centrifugal force, slings it outward. since the outer edge of the converter moves faster than the portions at the center, the fluid picks up speed
The torque converter is a metal case which is shaped like a sphere that has been flattened on opposite sides, it is bolted to the rear end of the engine's crankshaft. Generally, the entire metal case rotates at engine speed and serves as the engine's flywheel. The case contains three sets of blades (Fig.9-2). One set is attached directly to the case. This set forms the torus or pump. Another set is directly connected to the output shaft, and forms the turbine. The third set is mounted on a hub which, in turn, is mounted on a stationary shaft through a one-way clutch. This third set is known as the stator. A pump, which is driven by the converter hub at engine speed, keeps the torque converter full of automatic transmission fluid at all times. Fluid flows continuously through the unit to provide cooling. Under low speed acceleration, the torque converter functions as follows: The torus is turning faster than the turbine. It picks up fluid at the center of the converter and, through centrifugal force, slings it outward. Since the outer edge of the converter moves faster than the portions at the center, the fluid picks up speed
The fluid then enters the outer edge of the turbine blades; it then travels back toward the center of the converter case along the turbine blades. In impinging upon the turbine blades, the fluid loses the energy picked up in the torus HOUSING Fig 9-2 The torque converter housing IS rotated by the ONE-WAY FLUID engine ' s crankshaft CLUTCH and turns the impeller. The impeller then ao看 spins the turbine TURBINE ENGINE SHAFT which gives motion to CRANK SHAFT the turbine shaft driving the gears
Fig. 9-2 The torque converter housing is rotated by the engine's crankshaft, and turns the impeller. The impeller then spins the turbine, which gives motion to the turbine shaft, driving the gears The fluid then enters the outer edge of the turbine blades; it then travels back toward the center of the converter case along the turbine blades. In impinging upon the turbine blades, the fluid loses the energy picked up in the torus