search
Login | Signup | Support
×

Add as Frienddiesel engine

by: amitamarsingh

Current Rating : Rate It :

9530

Views

Download
 
1 : A SEMINAR REPORT ON DIESEL ENGINE MODERATOR: PROF. P. SHRIVASTAVA ER. V. S. CHANDEL MECHANICAL DEPARTMENT PRESENTED BY: RENUKA RANI PATEL BRANCH-MECH. VI SEM. 0301ME081026
2 : CONTENTS:- Introduction Diagram of diesel engine Working diagram Working of diesel engine Indicator diagram Valve timing diagram
3 : INTRODUCTION A diesel engine (also known as a compression-ignition engine and sometimes capitalized as Diesel engine) is an internal combustion engine that uses the heat of compression to initiate ignition to burn the fuel, which is injected into the combustion chamber during the final stage of compression. This is in contrast to spark-ignition engines such as a petrol engine (gasoline engine) or gas engine (using a gaseous fuel as opposed to gasoline), which uses a spark plug to ignite an air-fuel mixture. The diesel engine is modeled on the Diesel cycle. The engine and thermodynamic cycle were both developed by Rudolf Diesel in 1897. The diesel engine has the highest thermal efficiency of any regular internal or external combustion engine due to its very high compression ratio. Low-speed diesel engines (as used in ships and other applications where overall engine weight is relatively unimportant) often have a thermal efficiency which exceeds 50 percent.
4 : DIAGRAM OF DIESEL ENGINE Rocker arm Valve spring Valve guide Pushrod fuel injector Combustion chamber Cam Camshaft Water jacket Connecting rod bearing
5 : WORKING OF DIESEL ENGINE
6 : Working diagram
7 : WORKING(showing process) .
8 : WORKING OF DIESEL ENGINE DIESEL ENGINE COMPRISES FOUR STROKES AS:- Intake stroke Compression stroke Power stroke Exhaust stroke
9 : INTAKE STOKE The piston is at top dead center at the beginning of the intake stroke, and, as the piston moves downward, the intake valve opens. The downward movement of the piston draws air into the cylinder, and, as the piston reaches bottom dead center, the intake valve closes. .
10 : COMPRESSION STROKE The piston is at bottom dead center at the beginning of the compression stroke, and, as the piston moves upward, the air compresses. As the piston reaches top dead center, the compression stroke ends
11 : POWER STROKE The piston begins the power stroke at top dead center. At this point, fuel is injected into the combustion chamber and is ignited by the heat of the compression. This begins the power stroke. The expanding force of the burning gases pushes the piston downward, providing power to the crankshaft. The diesel fuel will continue to bum through the entire power stroke (a more complete burning of the fuel).
12 : EXHAUST STROKE As the piston reaches bottom dead center on the power stroke, the power stroke ends and the exhaust stroke begins. The exhaust valve opens, and, as the piston rises towards top dead center, the burnt gases are pushed out through the exhaust port. As the piston reaches top dead center, the exhaust valve closes and the intake valve opens. The engine is now ready to begin another operating cycle.
13 : INDICATOR DIAGRAM OF DIESEL ENGINE
14 : THEORETICAL
15 : REAL DIAGRAM
16 : Valve timing diagram
17 : THANK YOU

Presentation Tags

Copyright © 2014 www.slideworld.com. All rights reserved.