crankcase 曲轴箱
section and the crankcase section. The
house 安装
crankcase section is used to house the
crankshaft 曲轴
crankshaft, oil pan. Cooling passageways are camshaft 凸轮轴
• 4. Piston and Connecting Rod Assembly piston 活塞
• The piston and connecting rod assembly transmits the power from combustion to the crankshaft. Shown in Fig.1-1-3 ,it mainly
• are two types of sleeves－wet and dry.
• Seals must be used on the top and bottom of the wet sleeve in order to keep the coolant from leaking out of the cooling system.
built within the block. These passageways, coolant 冷却液
also known as water sockets, surround the
oil pan 机油盘
cylinders. They allow coolant to circulate water socket
(气缸体) 2- cylinder
(气缸) 3- crankcase area
（曲轴箱部分）
• 2. Cylinder Liners
• The purpose of using a liner is that, if the cylinder is damaged, the liner can be removed and replaced rather easily. There
adequately
internally so that engine parts can be
充分地
adequately lubricated.
lubricate 润滑
Four-Cylinder Engine Cylinder Block (四缸发动机气缸体)
Fig. 1-1-1 1- cylinder block
System Engine Ignition, Starting and
Charging System Engine Diagnosis System
Unit 1 Engine Mechanical
• 1. Cylinder Block
• The engine block is the main supporting
Cylinder Head（气缸盖）
Fig. 1-1-2 1-cap(盖) 2- cylinder head
bolt（气缸盖螺栓） 3-exhaust manifold gasket
（排气歧管垫） 4-cylinder head gasket（气缸
盖垫片）5- intake manifold gasket(进气歧管垫) 6-cylinder head (气缸盖) 7-cylinder head cover gasket (气缸盖罩垫片)8- cylinder head cover (气缸盖罩）
Automobile Professional English
汽车专业英语
Vocabulary Study Translation Skills Exercises
Chapter One Engine
➢ Unit 1 ➢ Unit 2 nit 5
Engine Mechanical EFI System Engine Cooling and Lubrication
throughout the cylinder area to keep the
水套
engine cool. There is also a drilled
internally
passageway within some blocks for the
内部地
camshaft. Many oil holes are drilled
engine 发动机
structure to which all other engine parts are block 气缸体
attached. Fig. 1-1-1 shows a cylinder block. cylinder 气缸
It has two main sections: the cylinder
• 3. Cylinder Head
• The Cylinder head is used to hold the valves, and it has ports to allow air, fuel and exhaust to move through the engine. In addition, it has coolant passages. Fig.1-1-2 shows a cylinder head. After the cylinder head has been cast, some areas must be machined so that intake and exhaust manifolds can be attached, valves can be seated, spark plugs and injectors can be installed, and a good seal can be provided to the block.
liner（发动机)气 缸套
remove 拆下 replace 取代 seal 密封，封条 leak 使渗漏 valve 气门；阀 port 孔管道 exhaust 排气 in addition 另外 intake 进气，吸入 manifold 歧管 spark 火花 plug 塞子 injector 喷油器 install 安装