项目3-发动机冷却系和润滑系认识-4学时.pptx

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,2025/6/30 周一,汽车,实用英语,全国交通运输职业教育教学指导委员会,马林才,刘大学,韩建保,“十二五”职业教育国家规划,教材,组织编写,主,编,副,主,编,主,审,2025/6/30 周一,四冲程发动机构造与工作过程介绍,发动机燃油供给系统认识,发动机冷却系统和润滑系统认识,汽车底盘构造认识,汽车电气设备和主动安全系统介绍,项目一,项目二,项目三,项目四,项目五,项目六,项目七,项目八,汽车车身电气设备和被动安全系统介绍,车载网络系统与自动驾驶技术介绍,新能源汽车介绍,项目九,汽车性能参数及检测设备介绍,项目十,汽车故障诊断仪和数据流,项目十一,汽车使用说明书及维修资料,项目三,发动机冷却系和润滑系认识,学习目标,学习时间,任务描述,引导问题,项目内容,1,2,3,4,5,拓展材料,6,1.认识关于发动机冷却系统和润滑系统组成、作用等的英语术语和词汇；,2.理解发动机冷却系统和润滑系统的固定表达方法；,3.运用所学知识，借助词典，对关于冷却系统和润滑系统等资料进行中英文互译；,4.在教师指导下，完成与发动机冷却系统和润滑系统相关的英语资料阅读和翻译；,5.正确完成课后练习。,.,时间要求,:,建议,4,学时,学习时间,学习目标,以汽油发动机为例，学习有关发动机冷却系统的水套、节温器、水泵、散热器、风扇等，以及润滑系统中主要零部件等，认识相关术语、词汇和特殊语句。通过完成该任务，能阅读关于发动机冷却系统和润滑系统的英文文献，并能运用所学项目知识，对相关文献进行翻译。,任务描述,引导问题,你知道下图中英文的意思吗？,项目内容,Project 3,Acquaintance with Engine Cooling,and Lubricating Systems,项目内容,Project 3,Acquaintance with Engine Cooling,and Lubricating Systems,The cooling system of a water-cooled engine consists of the engine water jacket,thermostat,water pump,radiator,radiator cap,fan,fan drive belt and necessary hoses(shown as Figure 3-1).,项目内容,Project 3,Acquaintance with Engine Cooling,and Lubricating Systems,The radiator It is constructed to hold a large amount of water in tubes or other passages which provide a large area in contact with the atmosphere(shown as Figure 3-2),.,项目内容,Project 3,Acquaintance with Engine Cooling,and Lubricating Systems,The oil pump,oil filter and together with oil pan,make up the lubricating system of the engine(shown as Figure 3-3).,项目内容,Project 3,Acquaintance with Engine Cooling,and Lubricating Systems,项目内容,Project 3,Acquaintance with Engine Cooling,and Lubricating Systems,Oil fi lter is placed in the engine oil system to remove dirt and abrasives from the oil（shown asFigure 3-5）.,项目内容,Project 3,Acquaintance with Engine Cooling,and Lubricating Systems,项目内容,Project 3,Acquaintance with Engine Cooling,and Lubricating Systems,2.Translate the following words or phrases into Chinese.,1)cooling system 2)thermostat 3)radiator cap,4)radiator core 5)lubricating system 6)crankcase ventilation,7)viscosity index improver 8)varnish,9)oil sludge,3.Translate the following words or phrases into English.,1),水泵,2),防冻液,3),水冷式发动机,4),润滑系,5),滑润剂,6),抗氧剂,7),发动机沉积物,8),机油滤清器,9),金属与金属接触,拓展材料,Practical Reading,Cooling-system Problems,拓展内容,借助专业词典，对发动机冷却系统故障进行中英文互译。,拓展材料,Engine overheating,loss of coolant and slowly warm-up are the most common problems with cooling systems.,Overheating,Overheating is noticed by a high temperature-gauge reading.The main causes are loss of coolant and accumulation of rust and scale in the system.Coolant that is discolored or rusty indicates lack of maintenance.,Rust,scale and corrosion that form in the coolant passages will restrict coolant fl ow and particles carried into the radiator tank will clog the tubes.,Overheating can sometimes be caused by a fault in the ignition or fuel systems.Any loss of power due to a retarded spark or a poor fuel mixture could cause a problem,but poor engine performance should be more noticeable than overheating.,拓展材料,Coolant Loss,Coolant loss is evident by the need to constantly top up the coolant in the reservoir.Bad coolant leaks are easy to find,but leaks which occur only under operating pressure are more diffi cult to locate and the system would have to be pressure-tested.,External leaks could come from the radiator,water pump,hose connections,or core plugs in the cylinder block or head.,Internal leaks could be due to a faulty cylinder head gasket,a cylinder head with a warped surface,or enlarged water passages in the cylinder head and water pump due to corrosion.Other less well-known causes of metal loss are cavitations or electrolysis.,拓展材料,Slowly Warm-up,The likely cause of a slowly warm-up is that the thermostat is faulty and not closing,or that it has beenremoved.,The silicone clutch on a variable-speed fan could be faulty,or an electric fan may not be cutting out whenthe engine is cold.,拓展材料,谢谢观看！,