汽車專業(yè)英語

內(nèi)容概要

隨著汽車工業(yè)的國際化，社會對于汽車從業(yè)人員的要求也就越來越高，對于既懂專業(yè)又懂英語的人才更是需求若渴，為此我們編寫了本教材，以適應(yīng)全國對更高層次的汽車專業(yè)技能人才的需求。    本教材在編寫中以汽車構(gòu)造為主線，主要介紹了汽車各個系統(tǒng)的基本構(gòu)造及工作原理，同時選編了現(xiàn)代汽車技術(shù)方面的專業(yè)內(nèi)容，如汽車電腦、安全氣囊和智能車輛等。本書內(nèi)容多采用外文原著，較好地反映了汽車專業(yè)英語自身特色，既介紹了汽車專業(yè)的傳統(tǒng)知識，也涉及了汽車新技術(shù)、新結(jié)構(gòu)，以及一些先進(jìn)的設(shè)備和儀器的使用。全書共12個單元，每個單元由課文、詞匯、短語和句子注釋、練習(xí)組成，既增強(qiáng)了本書的自學(xué)性，又增強(qiáng)了閱讀性；文中配有必要的插圖，功口深了讀者的理解；每單元都有一段對話，有利于提高學(xué)習(xí)者的英語會話能力。

書籍目錄

Unit 1 Engine Operating Principles and Engine Construction  Part A Engine Overall Mechanics  Part B The Four-Stroke Engine  Part C Engine Noise Diagnosis    Part D DialogueUnit 2 Piston Crank Mechanism and Valve Mechanism  Part A Piston Crank Mechanism   Part B Valve Mechanism   Part C VTEC  Part D DialogueUnit 3  Engine Fuel System  Part A Fuel Supply System of Gasoline Engine   Part B Diesel Engine Fuel System  Part C Fuel Injection Manual of Toyota Camry 2007  Part D Dialogue  Unit 4 Engine Ignition System and Starting System  Part A Engine Ignition System    Part B Engine Starting System  Part C Ignition System Diagnosis and．Service Procedure  Part D Dialogue Unit 5 Engine Cooling System and Lubricating System  Part A Engine Cooling System  Part B Engine Lubricating System  Part C  Cooling System Maintenance  Part D DialogueUnit 6 Power Train  Part A Clutch and Transmission  Part B Differential and Drive Axles  Part C  Clutch Troubleshootin9  Part D DialogueUnit 7 Running System  Part A Suspension System  Part B Wheel and Tire  Part C AUTOBOSS Wheel Aligner A-860  Part D DialogueUnit 8 Steering System and Braking System  Part A  Steering System   Part B Breaking System   Part C Anti—lock Braking Systems  Part D Dialogue  Unit 9 Instrument Panel and Automobile Sensors  Part A Instrument Panel   Part B Automobile Sensors  Part C Automobile Scope   Part D DialogueUnit 10 AC System and Air Bags  Part A Air Conditioning System   Part B Air Bags  Part C  Air Conditioner Troubleshootin9   Part D Dialogue Unit 11 Automobile Emission Control System  Part A Introduetion to the Emission Control System  Part B The Emission Control System Inspection  Part C Procedure for Operating Automobile Emission Analyzer  Part D DialogueUnit 12 Automotive Computer and Intelligent Vehicle  Part A Computers on Vehicles  Part B Intelligent Transportation System(ITS)   Part C Global Positioning System(GPS)  Part D Dialogue

章節(jié)摘錄

　　POV Valve　　The purpose of the positive crankcase ventilation （PCV） system is to take the vaporsproduced in the crankcase during the normal combustion process， and redirecting theminto the air/fuel intake system to be burned during combustion. These vapors dilute the air/fuel mixture so they have to be carefully controlled and metered in order not to affect theperformance of the engine. This is the job of the positive crankcase ventilation （PCV）valve. At idle， when the air/fuel mixture is very critical， just a little of the vapors areallowed in to the intake system. At high speed when the mixture is less critical and thepressures in the engine are greater， more of the vapors are allowed in to the intakesystem. When the valve or the system is clogged， vapors will back up into the air filterhousing or at worst， the excess pressure will push past seals and create engine oil leaks. （7）If the wrong valve is used or the system has air leaks， the engine will idle rough， or atworst， engine oil will be sucked out of the engine.　　EGR Valve　　The purpose of the exhaust gas recirculation （EGR） valve is to meter a small amountof exhaust gas into the intake system， which dilutes the air/fuel mixture so as to lower thecombustion chamber temperature. Excessive combustion chamber temperature createsoxides of nitrogen， which is a major pollutant. While the EGR valve is the most effectivemethod of controlling oxides of nitrogen， in its very design it adversely affects engine performance. The engine was not designed to run on exhaust gas. For this reason the amount of exhaust entering the intake system has to be carefully monitored and controlled. This is accomplished through a series of electrical and vacuum switches and the vehicle computer. （8） Since EGR action reduces performance by diluting the air /fuel mixture， the system does not allow EGR action when the engine is cold or when the engine needs full power.

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