2 Stroke 4 Stroke Diesel Engines
Experiment M4 : 2 Stroke, 4 Stroke Diesel Engines
Abstract
Introduction
The aim of this experiment was to explore the engines testing methods and to find how the chemical energy in the fuel is converted into power and distributed throughout the system. Six major components of the engine were studied to understand their effect on the engine. Also, a multi-cylinder diesel engine is tested for its efficiency.
Development of efficiency of the engine has allowed the motor companies to grow very rapidly and has also improved things likes Miles per Gallon (mpg) of the car to a much better value.
Theory of Engine
Valve - There are two valves inside each cylinder of the engine. Intake valve allows air into the engine so that it can combust with the fuel and the other, a exhaust valve removes the combusted waste produced by the engine.
Pistons: A piston is a cylindrical piece of metal the moves up and down inside the engine. As the pistons moves down, the valve takes in oxygen and fuel to combust. The valve closes after the oxygen and fuel are taken in. The pistons pumps and compresses the mixture so the engine can combust the two compounds. After each cycle, the valve opens and releases the useless mixture from the engine.
Connecting Rod: The connecting rod connects the piston to the crankshaft. Its job is to be able to rotate at both ends so that its angle can change as the piston moves and the crankshaft rotates.
Crankshaft: The crankshafts job is to turn the pistons up and down movement into circular motion. The power produced is transferred through the gear box and into the wheels.
Camshaft: Regulates the rate at which the valves open and close.
Cooling System: The job of the cooling system is to maintain the temperature of the engine so the efficiency of the engine maintained as well.
Theory of Engine Efficiency
The Engines efficiency is worked out by using three different formulas. Eqn. 1 is the first formula which calculates the shaft power (Wsh).
Abstract
Introduction
The aim of this experiment was to explore the engines testing methods and to find how the chemical energy in the fuel is converted into power and distributed throughout the system. Six major components of the engine were studied to understand their effect on the engine. Also, a multi-cylinder diesel engine is tested for its efficiency.
Development of efficiency of the engine has allowed the motor companies to grow very rapidly and has also improved things likes Miles per Gallon (mpg) of the car to a much better value.
Theory of Engine
Valve - There are two valves inside each cylinder of the engine. Intake valve allows air into the engine so that it can combust with the fuel and the other, a exhaust valve removes the combusted waste produced by the engine.
Pistons: A piston is a cylindrical piece of metal the moves up and down inside the engine. As the pistons moves down, the valve takes in oxygen and fuel to combust. The valve closes after the oxygen and fuel are taken in. The pistons pumps and compresses the mixture so the engine can combust the two compounds. After each cycle, the valve opens and releases the useless mixture from the engine.
Connecting Rod: The connecting rod connects the piston to the crankshaft. Its job is to be able to rotate at both ends so that its angle can change as the piston moves and the crankshaft rotates.
Crankshaft: The crankshafts job is to turn the pistons up and down movement into circular motion. The power produced is transferred through the gear box and into the wheels.
Camshaft: Regulates the rate at which the valves open and close.
Cooling System: The job of the cooling system is to maintain the temperature of the engine so the efficiency of the engine maintained as well.
Theory of Engine Efficiency
The Engines efficiency is worked out by using three different formulas. Eqn. 1 is the first formula which calculates the shaft power (Wsh).
References: http://auto.howstuffworks.com/engine2.htm