Internal combustion chamber The five events of Internal combustion engine are intake, Compression Ignition, Power, and Exhaust In a 4 stroke gasoline engine, the crankshaft does two revolutions in eac.
Internal combustion chamber The five events of Internal combustion engine are intake, Compression Ignition, Power, and Exhaust In a 4-stroke gasoline engine, the crankshaft does two revolutions in each engine cycle to the crankshaft Only one of its 4-strokes delivers Energy to the crankshaft This is a cylinder for a 4-stroke Petrol/Gasoline engine The first step is to get the air-fuel mixture into the chamber Mixture enters through an inlet port that is opened and closed by an inlet valve - This is called Intake Next is compression The piston compresses the air-fuel mixture into a smaller volume A spark across the electrodes of a spark plug ignites it, and it burns This burning is called combustion The burning gases expand rapidly, and push the piston down the cylinder until it reaches bottom dead center The reciprocating action of the piston turns into the rotary motion of the crankshaft The crankshaft forces the piston back up the cylinder, pushing leftover gases out past an exhaust valve And everything is back where it started, ready to repeat the whole process The whole process is a cycle Diesel engine 4-stroke diesel engine operates with the five events common to all internal combustion engines: Intake, Compression, Ignition, Power and Exhaust This is one cylinder of a 4-stroke diesel engine This model uses what is called direct injection It is an internal combustion engine, with the five events common to all internal combustion engines Let's see how they happen in diesel engines Unlike the gasoline engine, air alone enters the cylinder on the ( intake stroke) Compression, forcing the a small volume This compression heats the air At the end of this stroke, diesel engine fuel is injected into the combustion chamber Ignition, burning the mixture It is just the heat of the compressed air that ignites the fuel That's why diesels are called compression ignition engines Power, where energy released from combustion generates the force to turn the crankshaft And Exhaust, removing leftover gases This brings the system back to where it began, ready for another cycle Ignition System The purpose of the ignition system is to ignite the air/fuel mixture in the combustion chamber at the proper time In order to maximize engine output efficiency, the air /fuel mixture must be ignited so that the maximum combustion pressure appears about 10" after Top Dead Center (TDC) The required ignition timing depends on: the engine speed, the mixture etc The main input signals required for the ignition timing control are Throttle position sensor, MAF or MAP sensor input, engine coolant temperature sensor crankshaft position sensor, ignition switch, camshaft position sensor, the knock sensor Based on the inputs the control unit sends the ignition timing signal (IGT) to the igniter (power transistor) When the IGT signal goes off, the igniter will turn on and shut off primary current in the ignition coil ,which then produces a high voltage spark Injector Charging system Fuel System Lubrication system