Engine lubrication, fuel, exhaust and electrical systems learn how your car engines lubrication system, fuel system, exhaust system and electrical system work to keep your car. Identify charging circuit components, their functions, and maintenance procedures. Light vehicle mechanics who service and repair the mechanical parts of motor vehicles such as engines, transmissions clutch, gear box and differential and suspension systems. The grading system is defined by the society of automotive engineers, which is why you will sometimes see sae on the oil carton. At this speed, each stroke in the cycle takes place in 20 ms. This mechanical energy is then transferred through gears and drives from the starter motor to the engine flywheel. A vehicles engine cooling system serves not just to keep the engine cool, but to also keep its temperature warm enough to ensure efficient, clean operation. Describe and relate the systems, parts, components, and mechanisms essential to the mechanical operation of modern piston engines. Cars today may have as many as 100 microprocessors, many of which make them easier to service. Identify common internal combustion engine design classifications a small engine, such as one found in a lawn mower, usually contains only one cylinder and piston.
It does this by reading values from a multitude of sensors within the engine bay, interpreting the data using multidimensional performance maps called. Every engine, every vehicle and every computer system is different. The process is called scavenging, and the intake system of some engines, especially those operating on the twostroke cycle, is sometimes called the scavenging system. What is the lubrication system and different types of. The combustion of fuel such as coal, petrol, diesel generates heat. Automobile engineering is the one of the stream of mechanical engineering. Automotive engines use a number of cylinders to produce sufficient power to drive the wheels, but operate much like a small engine in many ways. Service, repairs, diagnosis, conversions and retrofits. It recharges the battery after engine cranking or after the use of electrical accessories with the engine turned off. Diesel engines have similar systems except for fuel and ignition system. Th e purpose of various electronic accessory systems.
The engine system an overview car repair in amherst, ny. Automotive technology basic worksheets europalehrmittel. The clear and easy descriptions, many example designs and calculations and the inclusion of434 illustrations and tables are easily understood and have, over. The test differs for different regions and also for different types of vehicles. Introduction to engine management systems download pdf. Automotive electrical circuits and wiring 5 101 it must help the charging system provide electricity when current demands are above the output limit of the charging system. To operate, it requires clean air for the fuel, water for cooling, electricity which it generates for igniting the fuel, and oil for lubrication.
All engineering books pdf download online, notes, materials, exam papers, mcqs for all engineering branch such as mechanical, electronics, electrical, civil, automobile, chemical, computers, mechatronic, telecommunication any all more popular books available here. Provide a varied leverage between the engine and the drive wheels provide means to transfer power in opposite direction. Engine lubrication system is serves several functions essential to the safe and reliable operations of the engine. Lubrication system, lets the vehicle move smoothly. In addition, automobile brake system is an essential element to measure the performance of an automobile.
Ignition system, contains two major molds which are spark ignition and compression ignition. Automobiles are the different types of vehicles used for transportation of passengers, goods, etc. Automotive repair maintenance apprenticeshipcentral. Therefore, a car engine is an combustion takes place internal combustion engine internally. And the ignition system does the function of producing the spark in case of spark ignition engines. Engine system, car engine parts, auto engine system,china. Egr systems for diesel engines 2 pass certain emission limits in order to get approved for sale. Pdf engine technology and application researchgate.
It converts fuel into the energy that powers the automobile. The opening and closing system is calleda camshaft figure 6. The chain of reactions which achieve that objective is set in motion by a spark, which ignites a mixture of petrol vapour and compressed air inside a momentarily sealed cylinder and causes it to burn rapidly. Also published in the encyclopedia of automotive engineering print edition isbn. Lightweight, functional, and novel material authors. Capitulo 2 automotive electrical circuits and wiring. National science foundation, automobile and diesel engine manufacturers, and. The performance and emissions that todays engines deliver would be impossible without the electronics that manage everything from ignition and fuel delivery to every aspect of emissions control. How the engine lubrication system works auto repair by.
The charging system performs several functions, which are as follows. The troubleshooting flow diagram on the next page lists the most common charging system problems, the possible. Before discussing the interaction of various systems, let us first enumerate the various systems that are present in an automobile. The performance of brake system directly affects the other properties of the vehicles. The chief characteristic of an automotive engine compared to a stationary engine or a marine engine is a high powertoweight ratio. It is a complex machine built to convert heat from burning gas into the force that turns the road wheels. This same type of suspension was also used in the rear of many cars. It is very difficult to cover all the aspects of automobile engineering. The camshaft has lobes on it that move the valves up and down.
An engine control unit ecu, also commonly called an engine control module ecm, is a type of electronic control unit that controls a series of actuators on an internal combustion engine to ensure optimal engine performance. The valve train consists of the valves and a mechanism that opens and closes them. Cooling system, is used for cooling internal combustion engines and usually divided into water cooling and air cooling. Diagnosis of charging system problems is typically straightforward. Each system, though primarily independent, is influenced by the effect of other systems interacting with it. It deals with the various types of automobiles, their mechanism of transmission systems and its applications. Ic engine system intake and exhaust system the intake and exhaust system deals with the inflow of fresh air and the outflow of used gases in the engine. Provide means of connection and disconnection of engine with rest of power train without shock and smoothly. The worksheets are designed to form a foundation for operational situations. Section 5 the charging system automotive training and. Automotive engines to understand the classification of automotive.
One is for the viscosity at a low temperature, and the second grade is for the viscosity at a high temperature, typically average engine operating temperature. The lubrication system keep the clean and cools the many moving parts in an engine as they thousands of times every minute. Automobile engineering is a vast field encompassing different types of vehicles used for transportation of people and materials. How car engines work automotive training board nsw. The air forced into the cylinder is called scavenge air, and the ports through which.
Automobile, a usually fourwheeled vehicle designed primarily for passenger transportation and commonly propelled by an internalcombustion engine using a volatile fuel. Currently the easiest way to create motion from petroleum is to burn the petroleum inside an engine. Enable power transmission at varied angles and varied lengths. In each subject area, practical situations serve as an introduction to the topical contents. Powertrain components and systems for commercial vehicles the demands placed on suppliers are undergoing change at a fundamental level.
Some parts of the system are built into the engine, some parts are attached to the engine and other parts are located on the body panels in the engine. An automobile is the result of combined work of a number of systems. The target of this thesis is to people get more information about automobile brake system and study some basic maintenance methods. Introduction to automotive electrical and electronic systems. Engine system engine system, a decisive factor in vehicles performance, is composed of the following parts. Figure 1 shows the speed profile of the modified new european driving cycle mnedc, which is the test procedure for passenger cars in europe 2. Lets look at all of the different subsystems used in modern engines, beginning with the valve train. Automotive technology basic worksheets contains worksheets for the following subject areas. However, automotive engines are sometimes modified for marine use, forming a marine automobile engine.
It mainly consists of a 6 or 12 volt battery, ammeter, ignition switch, auto transformer step up transformer, contact breaker, capacitor, distributor. The modern automobile is a complex technical system employing subsystems with specific design functions. Major systems and components of an automobile ncert. Engine lubrication, fuel, exhaust and electrical systems. Whole braking system fails due to leakage of fluid from brake linings.
Air intake system this system allows fresh air to enter the engine. Included with the course outline are transparency masters and a reference. Starting system starting systems purpose of the starting system the purpose of the starting system is to convert chemical energy stored in the battery into electrical energy, then into mechanical energy in the starter motor. The battery should be fully charged and connections kept clean and tight. An engine figure 2n1 is a device that converts heat energy into mechanical power which drives the vehicle or equipment. As an automobile is driven, the equivalence ratio and intake pressure vary with the engine load. Suppliers are increasingly expected to integrate components into complex systems a task that can only be mastered in close developmental partnerships with the vehicle manufacturers.
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