A-both of the pieces are fixed B-one is fixed, one is moveable
C-both of the pieces are moveable
7. The tiny space created between the open points is called ………….. A-a spark B-a cap C-a gap
8. The…………….helps prevent the electricity from arcing across the gap when the points are open.
A-gap between the open points B-condenser C-rotor
Task 3 Read the text again and give short answers to these following questions, using NO MORE THAN THREE WORDS AND/OR A NUMBER
1. On an electronic distributor ignition system, what triggers the ignition coil to fire high voltage
…………………………………………………………………………………
2. What is used to trigger the ignition module on most vehicles?
……………………………………………………………………………..
3. What is used to trigger the ignition module on some kinds of vehicles?
……………………………………………………………………………..
4. On distributorless ignition systems, what tells the ignition module when to fire the park plugs?
……………………………………………………………………………..
5. What is used to synchronize when proper ignition coil should be fired?
…………………………………………………………………………….
Task 4 Fill in each blank with a suitable word or phrase
ignition cable | ignition systems | high voltage | |
air gap | distributor |
Có thể bạn quan tâm!
-
Anh văn chuyên ngành Nghề Công nghệ ô tô - CĐ TC - Trường Cao đẳng nghề Đồng Tháp - 1 -
Anh văn chuyên ngành Nghề Công nghệ ô tô - CĐ TC - Trường Cao đẳng nghề Đồng Tháp - 2 -
The Starter Motor Draws A Great Deal Of Current From The………….. A Large Starter Motor Might Require 250 Or More Amperes Of Current. This Current Flows -
Anh văn chuyên ngành Nghề Công nghệ ô tô - CĐ TC - Trường Cao đẳng nghề Đồng Tháp - 5 -
Anh văn chuyên ngành Nghề Công nghệ ô tô - CĐ TC - Trường Cao đẳng nghề Đồng Tháp - 6 -
A Very Thin Oil Called Transmission Fluid Fills The Transmission System And Generates Hydraulic Pressure. As The Engine Speed Changes, The Pump That Pumps The Transmission Fluid To Develop
Xem toàn bộ 97 trang tài liệu này.
1. In a distributor ignition system, the ………………….from the secondary winding is delivered to the distributor by an ignition cable. The cable connects the coil with a terminal in the center of the distributor cap. The ………………..then distributes the high voltage to the individual spark plugs through a set of
………………….
2. Electronic ignition systems have no distributor. The …………….distribution is controlled by an electronic control unit and the vehicle’s computer.
3. All …………………..share a number of common components such as battery and ignition switch.
4. Spark plugs provide the crucial ……………….across which the high voltage from the coil causes an arc or spark.
Task 5 Translate into Vietnamese
1. The ignition coil transforms the relatively small amount of electrical voltage that it receives from the battery into a big enough amount of voltage to jump the spark plug gap. On most cars, a set of spark plug wires carries the high voltage to each spark plug.
…………………………………………………………………………………………..……
……………………………………………………………………………………..…………
………………………………………………………………………………..………………
2. The spark plugs deliver the spark of voltage to the combustion chamber just when the fuel/air mixture is at the point of greatest compression. The resulting explosion provides the power to propel your vehicle.
…………………………………………………………..……………………………………
……………………………………………………..…………………………………………
………………………………………………..………………………………………………
3. The rotor sits atop the distributor shaft inside the distributor. As the distributor shaft turns, the rotor rotates with it and points toward the terminal at the base of each spark plug wire so that each plug can fire in the correct order.
…………………………..……………………………………………………………………
……………………..…………………………………………………………………………
……………………………………………………………………..…………………………
Vocabulary
+trigger (v) /ˈtrɪɡə(r)/: gây ra +stationary (a) /ˈsteɪʃənri/: không chuyển động +moveable (a) /ˈmuːvəbl/: có thể duy chuyển +join (v) /dʒɔɪn/: nối lại +touch (v) /tʌtʃ/: chạm +draw apart (v) /drɔː əˈpa:t/: kéo rời ra +gap (n) /ɡæp/: khe hở, khoảng hở +spring (n) /sprɪŋ/: lò xo +arc (v) /ɑːk/: tạo cung lửa điện; (n) cung lửa điện +non-electronic distributor ignition system (n) hệ thống đánh lửa phi điện tử có bộ chia điện +electronic distributor ignition system.(n) hệ thống đánh lửa điện tử có bộ chia điện +distributorless electronic ignition system (n) hệ thống đánh lửa điện tử không có bộ chia điện |
Giới thiệu:
UNIT 4 THE COOLING SYSTEM
Mã bài: MH09-04
Trong bài này sinh viên được cung cấp một số thuật ngữ cơ bản liên quan đến các thành phần cơ bản của hệ thống làm mát. Sinh viên đọc hiểu bài khóa nói về các thành phần cơ bản hệ thống làm mát và thực hành các bài tập để rèn luyện kỹ năng đọc hiểu.
Mục tiêu:
- Kiến thức:
+ Nhận biết các thuật ngữ cơ bản liên quan đến các thành phần cơ bản của hệ thống làm mát như két nước làm mát, máy bơm, quạt làm mát, van hằng nhiệt, ống giải nhiệt trên/ dưới.
+ Hiểu được nội dung chính của bài khóa tiếng Anh về các thành phần cơ bản và nguyên lý hoạt động của hệ thống làm mát như két nước làm mát, máy bơm, quạt làm mát, van hằng nhiệt, ống giải nhiệt trên/ dưới.
- Kỹ năng:
+ Đọc hiểu được nội dung bài khóa tiếng Anh liên quan các thành phần cơ bản của hệ thống làm mát.
- Năng lực tự chủ và trách nhiệm:
+ Phát triển khả năng làm việc độc lập và làm việc theo cặp/nhóm.
+ Tự đánh giá kết quả của bản thân hoặc của các thành viên trong cặp/nhóm sau khi hoàn thành bài tập.
THE COOLING SYSTEM
The Radiator
When the fuel with air mixture is ignited in the cylinders, the temperature inside the engine can reach thousands of degrees Fahrenheit. It takes only half that heat to melt iron, and your engine would be a useless lump of metal in about 20 minutes if your vehicle couldn’t keep things cool. Naturally, the coolant and water that circulates around the cylinders in the engine block gets very hot, and so it’s continually circulated back to the radiator, where it cools off before heading back to the scene of the action.
The radiator is designed to cool the liquid quickly by passing it over a large cooling surface. The liquid enters the radiator through the top radiator hose, which is usually connected to the top of the radiator. As the liquid descends, it runs through channels in the radiator, which are cooled by air rushing in through cooling fins between the channels. When the liquid has cooled, it leaves the radiator through the bottom radiator hose. This hose usually has a spring inside it to prevent it from collapsing when the water pump draws coolant from the radiator.
Figure 4.1 A typical cooling system
The Fan
Air rushing through the radiator cools things off when you are driving down the freeway, but a fresh supply of air won’t be moving through the radiator fins when the vehicle is standing still or crawling its way through heavy traffic. For this purpose, a fan is located behind the radiator so that it can draw air through the radiator. Today, most fans have a plastic shroud that funnels air through the radiator. And some sports cars have air dams that help force the air up through the radiator from below.
Originally, a fan belt drove the fan as long as the engine was running. Now, fan
clutches on many vehicles automatically limit the fan’s movement at speeds over 25 mph. Most cars with transverse engines have electric fans, some of which continue to run for a short while after the engine is shut off.
The Water Pump
The water pump draws the liquid from the radiator through the bottom radiator hose and sends it to the engine, where it circulates through water jackets located around the combustion chambers in the cylinders and other hot spots. An accessory belt drives some water pumps, while some overhead cam engines drive the water pump with the timing belt. If the timing belt drives your water pump, the water pump will be difficult to see unless you remove the plastic timing belt cover.
The Thermostat
The thermostat is the only part of the cooling system that does not cool things off. Instead, it helps the liquid in the cooling system warm up the engine quickly.
The thermostat is a small, metal, heat-sensitive valve that’s usually located where the upper radiator hose meets the top of the engine. On a few vehicles, you find the thermostat where the bottom hose joins the engine. When it senses hot liquid, the thermostat allows the liquid to pass through. But when the thermostat senses that the liquid is cold, it shuts and doesn't allow the liquid to circulate through the radiator. As a result, the liquid stays in the engine, where it gets hot as the engine warms up, and in turn, the increasing heat of the liquid helps the engine to warm up more quickly. As a result, the vehicle runs more efficiently and burns less fuel.
Figure 4.2 A thermostat
Task 1 Match the words with the correct definitions
A. a device for cooling the engine of a vehicle or an aircraft B. a long tube made of rubber, plastic, etc., used for putting water onto fires, gardens, etc. C. a machine that is used to force liquid, gas or air into or out of something D. a belt that operates the machinery that cools a car engine E. when a liquid, gas or air circulates or is circulated, it moves continuously around a place or system F. a mechanism for connecting and disconnecting an engine |
and the transmission system in a vehicle, or the working parts of any machine. G. a large metal molding containing the cylinders of an internal combustion engine H. any of several ridges which serve to dissipate heat from a device such as an engine or electronic equipment by increasing surface area. |
6. cooling fin
Task 2 Read the text and circle the correct answers
1. The temperature inside the engine is about ……………..when mixture of air and fuel is ignited in the cylinders.
A-over 1000oC B-over 2000oC C-below 1000oC
2. The coolant and water is cooled off at ………………….before it returns to circulate around the cylinders in the engine block.
A-engine block B-radiator C-cylinders
3. The liquid gets into the radiator through…………….. It is usually mounted on the top of the radiator.
A-water pump B-channels C-the top radiator hose
4. As the water and coolant goes down, it flows through channels in the radiator. The …………that goes through cooling fins between the channels cools the liquid.
A-air B-coolant C-cooling fins
5. The function of the spring inside the hose is preventing ……………..from collapsing when the water pump draws coolant from the radiator.
A-the hose B-cooling fins C-water pump
6. When a traffic jam or heavy traffic takes place, the car cannot move or move very slowly, ……………….can flow through the radiator fins.
A-a fresh air supply B-no fresh air supply C-None are correct
7. People design ……………..behind the radiator to draw air through the radiator.
A-an air dam B-a plastic shroud C-a fan
8. In some sports cars, people design ………….to force the air up through the radiator from below.
A-an air dam B-a plastic shroud C-a fan
9. The function of the fan clutch is ………………
A-automatically keep the fan’s movement at speeds over 25 mph
B-automatically increase the fan’s movement at speeds over 25 mph C-automatically reduce the fan’s movement at speeds over 25 mph
10. The thermostat let the liquid to pass through when it ………………….. A-senses hot liquid B-senses the cold liquid
C-Both are correct
Task 3 Answer the questions
1. With what is the top radiator hose connected?
…………………………………………………………………………
2. Through which part of the cooling system does the cooled liquid leave the radiator?
…………………………………………………………………………
3. What does the bottom radiator hose have inside it?
…………………………………………………………………………
4. What is the function of the water pump?
…………………………………………………………………………
5. How can water move around the combustion chamber?
…………………………………………………………………………
6. What is the function of the thermostat?
…………………………………………………………………………
Task 4 What do the underlined words refer to?
1. The temperature inside the engine can reach thousands of degrees Fahrenheit. Ittakes only half that heat to melt iron, and your engine would be a useless lump of metal in about 20 minutes if your vehicle couldn’t keep things cool. A-the engine
B-the temperature
C-Both A & B are incorrect
2. Naturally, the coolant and water that circulates around the cylinders in the engine block gets very hot, and so it’s continually circulated back to the radiator.
A-the coolant and water B-the engine block C-the coolant
3. The radiator is designed to cool the liquid quickly by passing itover a large cooling surface.
A-the radiator B-the liquid C-the cooling surface
4. The liquid enters the radiator through the top radiator hose, whichis usually connected to the top of the radiator.
A-the liquid B-the top radiator hose C-the radiator
5. As the liquid descends, it runs through channels in the radiator, whichare cooled by air rushing in through cooling fins between the channels.
A-the liquid B-channels in the radiator C-the radiator
Task 5 Fill in each blank with a suitable word or phrase
radiator | water pump | |
water jackets | fins | heat |
1. The burning of the air-fuel mixture in the combustion chambers of the engine produces large amounts of…………….. This heat must not be allowed to build up and must be reduced. This heat can easily damage the metal parts of an engine. To prevent this, engines have a…………………
2. A typical cooling system relies on a………………which circulates the coolant through the system. The pump is typically driven by the engine.
3. The coolant is a mixture of water and antifreeze. The coolant is pushed through ……………..round the cylinder block to remove heat from the area around the cylinders’ combustion chambers.
4. The heat picked up by the coolant is sent to the…………... The radiator transfers the coolant’s heat to the outside air as the coolant flows through its tubes. To help remove the heat from the coolant, a cooling fan is used to pull cool outside air through the …………….of the radiator.
Task 6 Translate into Vietnamese
1. The radiator is designed to cool the liquid quickly by passing it over a large
cooling surface. The liquid enters the radiator through the top radiator hose, which is usually connected to the top of the radiator.
……………………………………………………………………………………
……………………………………………………………………………………
……………………………………………………………………………………
2. As the liquid descends, it runs through channels in the radiator, which are cooled by air rushing in through cooling fins between the channels. When the liquid has cooled, it leaves the radiator through the bottom radiator hose. This hose usually has a spring inside it to prevent it from collapsing when the water pump draws coolant from the radiator.
……………………………………………………………………………………
……………………………………………………………………………………
……………………………………………………………………………………
……………………………………………………………………………………
3. For this purpose, a fan is located behind the radiator so that it can draw air through the radiator. Today, most fans have a plastic shroud that funnels air through the radiator. And some sports cars have air dams that help force the air up through the radiator from below.
……………………………………………………………………………………
……………………………………………………………………………………
……………………………………………………………………………………
Vocabulary
+plastic shroud (n) vòng nhựa +funnel (v) rót, chảy qua; (n) cái phễu +air dam (n) vật chắn không khí +fan belt (n) đai kéo quạt +supply (v) cung cấp +consume (v) tiêu thụ +transverse engine (n) động cơ đặt ngang +electric fan (n) quạt điện +shut off (v) tắt +top radiator hose (n) ống nước giải nhiệt trên +bottom radiator hose (n) ống nước giải nhiệt dưới +accessory belt (n) đai dẫn động +overhead cam engine (n) động cơ có cam đặt ở trên đầu +timing belt (n) dây cuaro cam +crawl (v) bò +fan clutch (n) ly hợp quạt làm mát động cơ |