汽车专业英语课件(宋进桂)Chapter 2-7
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汽车专业英语课件Chapter-2-7
2.7 Gasoline direct injection
Ultra-lean Combustion Mode. Under most normal driving
conditions, up to speeds of 120 km/h, the Mitsubishi GDI engine operates in ultra-lean combustion mode, resulting in less fuel consumption. In this mode, fuel injection occurs at the latter stage of the compression stroke and ignition occurs at an ultra-lean air-fuel ratio of 30-40. This operating mode is also called as stratified-charge mode.
Fig2-19. An computer controlled diesel fuel injection system with axial-piston distributor injection pump
Chapter 2 Internal Combustion Engine
2.8 Diesel Fuel Injection System
Chapter 2 Internal Combustion Engine 2.7 Gasoline direct injection
Figure 2-15 Mitsubishi GDI uses two combustion modes
Chapter 2 Internal Combustion Enal Combustion Engine 2.7 Gasoline direct injection
Ultra-lean Combustion Mode. Under most normal driving
conditions, up to speeds of 120 km/h, the Mitsubishi GDI engine operates in ultra-lean combustion mode, resulting in less fuel consumption. In this mode, fuel injection occurs at the latter stage of the compression stroke and ignition occurs at an ultra-lean air-fuel ratio of 30-40. This operating mode is also called as stratified-charge mode.
Fig2-19. An computer controlled diesel fuel injection system with axial-piston distributor injection pump
Chapter 2 Internal Combustion Engine
2.8 Diesel Fuel Injection System
Chapter 2 Internal Combustion Engine 2.7 Gasoline direct injection
Figure 2-15 Mitsubishi GDI uses two combustion modes
Chapter 2 Internal Combustion Enal Combustion Engine 2.7 Gasoline direct injection
汽车专业英语(原书作者宋红英)
II. Text Explanation
Brake system is a balanced set of mechanical and hydraulic devices used to retard the motion of the vehicle by means of friction. Hydraulic [haidrlik] adj. 液压的, 水力的 Retard [ritd] vt. 延迟, 使减速,阻碍 Friction [ frikn] n.摩擦, 摩擦力
II. Text Explanation
In other words
In other words, they remain relatively constant or static. 换句话说，它们相对的稳定、静止。 In other words, we have adhered to scientific socialism. 也就是说，我们坚持了科学社会主义。
I. Pre-questions What are the functions of the four systems? Driving system works by transmitting engine power to the driving wheels. Suspension system‟s function is to increase strength and durability of components and to meet customers‟ requirements for riding comfort and driving safety. Steering system is used to control the driving direction of an automobile. Brake system is used to retard the motion of the vehicle.
汽车专业英语ppt课件
；.
7
1.1 Basic Parts of Automobile 1.1.2 Body
An automobile body (Fig.1-2) provides a protective covering for the engine, passengers, and cargo. The body is designed to keep passengers safe and comfortable. The body styling provides an attractive, colorful, modem appearance for the vehicle. It is streamlined to lessen wind resistance and to keep the car from swaying at the driving speeds.
n.鼓, 鼓声；v.击鼓
['pedl]
n.踏板
；.
4
1.1 Basic Parts of Automobile 1.1.1 Engine
ignition ignite carburetor combustible axle suspension
differential
New Words
[ig'ni∫ən]
；.
2
1.1 Basic Parts of Automobile 1.1.1 Engine
category manifold styling streamlined chassis coolant lubrication ignition
New Words
['kætigəri] ['mænifəuld]
汽车专业英语(原书作者宋红英)第～二章PPT课件
❖Convert …..into….. ❖They converted the garage into a theater.
他们将车库改成戏院。 ❖convert water into ice. ❖ 将水变成冰 ❖converting feet into meters. ❖ 将英尺换算成公尺
II. Text Explanation
❖The internal combustion engine 内燃机 ❖Convert …..into…..使转变, 转换... ❖Propel vt.推进, 驱使 ❖ 译文：内燃机在汽缸内燃烧燃料，然后把燃烧或者
“爆炸”所产生的膨胀力变成旋转力，用以推动车 辆前进。
II. Text Explanation
II. Text Explanation
In 1956, the No. 1 Auto Plant was established in Changchun, and turned out the first batch of liberation automobiles for our country.
底盘、车身和电器设备组成的。
II. Text Explanation
❖In other words
❖ In other words, they remain relatively constant or static. 换句话说，它们相对的稳定、静止。
❖ In other words, we have adhered to scientific socialism. 也就是说，我们坚持了科学社会主义。
❖be composed of
❖ Navy must be composed of surface ship unit and submarine unit.
他们将车库改成戏院。 ❖convert water into ice. ❖ 将水变成冰 ❖converting feet into meters. ❖ 将英尺换算成公尺
II. Text Explanation
❖The internal combustion engine 内燃机 ❖Convert …..into…..使转变, 转换... ❖Propel vt.推进, 驱使 ❖ 译文：内燃机在汽缸内燃烧燃料，然后把燃烧或者
“爆炸”所产生的膨胀力变成旋转力，用以推动车 辆前进。
II. Text Explanation
II. Text Explanation
In 1956, the No. 1 Auto Plant was established in Changchun, and turned out the first batch of liberation automobiles for our country.
底盘、车身和电器设备组成的。
II. Text Explanation
❖In other words
❖ In other words, they remain relatively constant or static. 换句话说，它们相对的稳定、静止。
❖ In other words, we have adhered to scientific socialism. 也就是说，我们坚持了科学社会主义。
❖be composed of
❖ Navy must be composed of surface ship unit and submarine unit.
汽车专业英语课件(宋进桂)Chapter 2-6
Chapter 2 Internal Combustion Engine
2.6 Gasoline Electronic Fuel Injection System
New Words
assembly entrance deliver port subsystem
[ə'sembli] ['entrəns] [di'livə] [pɔ:t] ['sʌbsistim]
Chapter 2 Internal Combustion Engine 2.6 Gasoline Electronic Fuel Injection System
Fig.2-12 Fuel delivery system of a car
Chapter 2 Internal Combustion Engine 2.6 Gasoline Electronic Fuel Injection System
Chapter 2 Internal Combustion Engine 2.6 Gasoline Electronic Fuel Injection System
Engine load is transmitted to the computer by means of an intake manifold absolute pressure sensor. The sensor converts manifold vacuum into a small electrical signal. This input allows the computer to increase fuel supply when the engine is under load and needs a richer mixture, and decrease fuel supply when engine load is light. Every injection system has a temperature sensor to measure engine coolant temperature. Many injection systems have an additional sensor to measure the temperature of the incoming air. Some late model fuel injection systems monitor the amount of air entering the engine by using an airflow sensor（Fig.2-10）. The computer takes this input and compares it with engine RPM and manifold vacuum to determine the amount of fuel to inject. There are three types of airflow sensors, the heated wire, the air valve and the Karmann vortex.
2.6 Gasoline Electronic Fuel Injection System
New Words
assembly entrance deliver port subsystem
[ə'sembli] ['entrəns] [di'livə] [pɔ:t] ['sʌbsistim]
Chapter 2 Internal Combustion Engine 2.6 Gasoline Electronic Fuel Injection System
Fig.2-12 Fuel delivery system of a car
Chapter 2 Internal Combustion Engine 2.6 Gasoline Electronic Fuel Injection System
Chapter 2 Internal Combustion Engine 2.6 Gasoline Electronic Fuel Injection System
Engine load is transmitted to the computer by means of an intake manifold absolute pressure sensor. The sensor converts manifold vacuum into a small electrical signal. This input allows the computer to increase fuel supply when the engine is under load and needs a richer mixture, and decrease fuel supply when engine load is light. Every injection system has a temperature sensor to measure engine coolant temperature. Many injection systems have an additional sensor to measure the temperature of the incoming air. Some late model fuel injection systems monitor the amount of air entering the engine by using an airflow sensor（Fig.2-10）. The computer takes this input and compares it with engine RPM and manifold vacuum to determine the amount of fuel to inject. There are three types of airflow sensors, the heated wire, the air valve and the Karmann vortex.
汽车专业英语课件(宋进桂)教学内容
Chapter 6 Automotive Electrical and Electronic Systems
6.1 Lead Acid Battery and Circuit protection
devices
All of the vehicle fuses are usually contained in a holder called fuse block or relay block (Figure 6-2 and 6-3).
Figure 6-1 Battery construction
Chapter 6 Automotive Electrical and Electronic Systems
Chapter 6 Automotive Electrical and
ElectronBattery and Circuit protection devices 6.2 Charging System 6.3 Starting System 6.4 Ignition Systems 6.5 Lighting System 6.6 power window system 6.7 Supplemental Restraint Systems 6.8 Cruise control systems 6.9 Anti Theft Systems 6.10 Air Conditioning
Chapter 6 Automotive Electrical and Electronic Systems
6.1 Lead Acid Battery and Circuit protection devices
electrochemical overload fusible relay bimetallic strip
汽车专业英语电子课件Unit 2
Cylinder Block
• The core[kɔ:] of the engine is the cylinder, with the piston moving up and down inside the cylinder.
Crankshaft and Connecting Rod Mechanism • The crankshaft changes the linear['liniə] movement of the piston into a rotational movement via a connecting rod. • The connecting rod connects the piston to the crankshaft. • It can rotate at both ends so that its angle['æŋɡl] can change as the piston moves and the crankshaft rotates.
Fuel Supply System
• The fuel system supplies fuel to the engine. It also has the functions to regulate the volume['vɔlju:m] of fuel supply. • The fuel systems in diesel and gasoline engines are different.
Compression Stroke
• With both intake and exhaust valves (open,close), the piston returns to the top of the cylinder compressing the fuelair mixture into the combustion chamber of the cylinder head.
汽车专业英语(原书作者宋红英)第三~七章PPT课件
In a car, you need a clutch because the engine spins all the time, but the car's wheels do not.
spin [spin] vt. & vi. 使…旋转 译文：汽车上需要一个离合器，因为发动机一直在旋转， 而车轮却不是（一直旋转）。
I. Pre-questions How many main parts does the clutch consist of?
driving members control mechanisms pressing mechanisms
driven members
II. Text Explanation
Diagram of car showing clutch location
I. Pre-questions
How does the drive line work? The drive line carries power from the engine crankshaft to the driving wheels, so the wheels rotate and the automobile moves.
A-engine B-clutch C-clutch pedal D-manual transmission
Diagram of car showing clutch location
I. Pre-questions
What is the function of the clutch?
Connect or disconnect the power from the engine to the drive line.
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Ultra-lean Combustion Mode. Under most normal driving
Chapter 2 Internal Combustion Engine 2.7 Gasoline direct injection
Two main operating modes of Volkswagen AG's fuel stratified injection (FSI) which uses more operating modes and FSI’s fuel-saving potential is shown in Figure 2-16. A typical pulse injection system with direct injection is given in Fig.2-17.
Chapter 2 Internal Combustion Engine 2.7 Gasoline direct injection
conditions, up to speeds of 120 km/h, the Mitsubishi GDI engine operates in ultra-lean combustion mode, resulting in less fuel consumption. In this mode, fuel injection occurs at the latter stage of the compression stroke and ignition occurs at an ultra-lean air-fuel ratio of 30-40. This operating mode is also called as stratified-charge mode. Superior Output Mode. When the GDI engine is operating with higher loads or at higher speeds, fuel injection takes place during the intake stroke. This optimizes combustion by ensuring a homogeneous, cooler air-fuel mixture which minimizes the possibility of engine knocking. This mode is also called as homogeneous-charge mode.
ultra-lean
deploy homogeneous stratify
['ʌltrə'li:n]
[di'plɔi] [ֽhɔmə'ʤi:njəs] ['stræ tifai]
a.极端稀薄的，超稀薄
v.展开，部署 a.相似的，均匀的 a. (使)成层，（使）分层
Chapter 2 Internal Combustion Engine 2.7 Gasoline direct injection
Chapter 2 Internal Combustion Engine 2.7 Gasoline direct injection
New Words
drastic response efficiency
['dræ stik] [ri'spɔns] [i'fiʃənsi]
a.剧烈的，猛烈的 n.反应，响应 n.效率，效能，有效性
[veəri'ei∫ən] ['səulinɔid] ['ʃʌtɔ:f] ['enədʒaiz]
n.变化，变更，变种，变调 n.螺线管，电磁线圈[铁，阀，开关] n.中断，切断，关闭al Combustion Engine 2.8 Diesel Fuel Injection System
Fuel Filter. Diesel fuel must be kept clean to avoid injector system trouble. Very small particles are enough to clog injector nozzles. Diesel fuel systems typically use one or more filters to trap dirt and other deposits. Injection Pump. Due to the high compression (around 22:1) used in diesel engines, the diesel injection pump must be capable of producing high pressures. There are a number of injection pump designs. The most commonly used automobile and light truck diesel injection pumps are classified as inline or distributor. The inline injection pump（Figure 12-18） uses a separate cylinder plunger-cam unit （Fig.2-20）for each cylinder. These units are contained in a straight row in a common housing.
2.8.1 Conventional System Typical diesel system components include the fuel tank, fuel pump, fuel filter, injection pump, injectors, and the necessary fuel lines (Fig.2-18). The system in Fig.2-19 is typical of newer systems that utilize a computercontrolled electronic fuel injection pump.
Although MPI provides a drastic improvement in response and combustion quality, it is still limited due to fuel and air mixing prior to entering the cylinder. To further increase throttle response and combustion efficiency, while lowering fuel consumption and increasing output, systems may use direct injection. Gasoline direct injection engines are engineered to inject the gasoline directly into the cylinder in a manner similar to diesel direct injection engines (Fig.2-14). Direct injection is designed to get better fuel economy. This is accomplished by enabling combustion of an ultra-lean mixture under many operating conditions. Direct injection is also designed to allow higher compression ratios, delivering higher performance with lower fuel consumption. Currently, direct injection gasoline engines are being deployed throughout the world in passenger cars.
Chapter 2 Internal Combustion Engine 2.7 Gasoline direct injection
A variety of air-fuel mixtures can be created according to changes in the fuel injection timing. The GDI engine provides both lower fuel consumption and higher output. This is achieved with the use of two combustion modes. These two modes are represented in Figure 215.
Chapter 2 Internal Combustion Engine 2.7 Gasoline direct injection
Fig.2-17 Gasoline direct injection system
Chapter 2 Internal Combustion Engine
2.8 Diesel Fuel Injection System
Chapter 2 Internal Combustion Engine
2.8 Diesel Fuel Injection System
Fig2-18 A conventional diesel fuel injection system
Chapter 2 Internal Combustion Engine 2.8 Diesel Fuel Injection System
New Words
particle