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Page Name: VALVE TIMING DIAGRAM OF FOUR STROKE ENGINES pdf


Posted by: engineering project helper
Created at: Tuesday 15th of January 2013 11:13:05 PM
Last Edited Or Replied at :Tuesday 15th of January 2013 11:13:05 PM
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VALVE TIMING DIAGRAM OF FOUR STROKE ENGINES



VALVE TIMING

•Valve timing is the regulation of points in the cycle, at which the valves are set to open and close.
•Since the valves require a finite period of time for opening and closing therefore a ‘slight lead time’ is necessary for proper opening and closing of valves.
•The design of the valve operating cam provides for the smooth transition from one position to another while the cam setting determines the timing of the valve.

INTAKE VALVE OPENING..................==> [ Click Here to Read More ]



Page Name: Two Stroke engines Four stroke engines ppt


Posted by: engineering project helper
Created at: Thursday 08th of November 2012 05:01:45 AM
Last Edited Or Replied at :Thursday 08th of November 2012 05:01:45 AM
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Two Stroke engines & Four stroke engines



Engine

A device which convert heat energy in to mechanical energy to obtain some power is called an engine.

TYPES OF AN ENGINE

There are two types of an engine.
Internal Combustion Engine(I.C. Engines)
External Combustion Engine(E.C. Engines)

Internal Combustion Engine(I.C. Engines)

The engines in which combustion takes place inside the engine as in the cylinder are called as I. C. Engines e.g.; Petrol Engine, Diesel Engines.

External ..................==> [ Click Here to Read More ]



Page Name: ENGINE ppt


Posted by: project source code cheker
Created at: Friday 27th of July 2012 01:40:01 AM
Last Edited Or Replied at :Friday 27th of July 2012 01:40:01 AM
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ENGINE ppt



An Engine is a device or motor that coverts thermal energy to mechanical energy, or an engine is a mechanical device that produces some form of output from a given input.In an engine the linear motion of the pistons is converted into rotational motion by the crankshaft There are two types of engines; Two stroke engines (petrol engine) and Four stroke engines (petrol and diesel engines). Two stroke engines are built for high speed and performance while Four stroke engines are fuel efficient. Four stroke engines are..................==> [ Click Here to Read More ]



Page Name: THE SIX-STROKE ENGINES


Posted by: fine project uploader
Created at: Saturday 04th of February 2012 03:18:43 AM
Last Edited Or Replied at :Saturday 04th of February 2012 03:18:43 AM
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l ICE cycle,
 The fuel/air valves open as the piston moves down, which draws air and fuel into
The chamber.
 The valves close as the piston moves back up, putting the air/fuel mixture under
pressure.
 The mixture is then ignited, causing a small explosion which forces the piston
back down, which turns the crank and provides the torque.
 The exhaust valves open as the piston moves back up once again, pushing the byproducts
of the fuel explosion out of the chamber. This leaves the piston back in
its starting position, ready for another cycle.
This process is repeated thousa..................==> [ Click Here to Read More ]



Page Name: four stroke engine


Posted by: birajdar
Created at: Thursday 21st of October 2010 02:18:24 AM
Last Edited Or Replied at :Monday 03rd of December 2012 12:05:02 AM
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Need seminars on four stroke engine..................==> [ Click Here to Read More ]



Page Name: THE PROBLEM OF CONTROLLING FOUR-STROKE ENGINES


Posted by: seminar topic helper
Created at: Monday 04th of October 2010 05:56:29 AM
Last Edited Or Replied at :Monday 04th of October 2010 05:56:29 AM
ENGINES , FOUR STROKE, CONTROLLING , PROBLEM, problem of controlling four stroke engine ppt , the problem of controlling four stroke engines,
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THE PROBLEM OF CONTROLLING FOUR-STROKE ENGINES;
THE NEED TO ALTER THE CONVENTIONAL METHOD,
AS JUSTIFIED BY THE EXAMPLE OF OTTO ENGINE

Prepared by:
..................==> [ Click Here to Read More ]



Page Name: DESIGN AND ANALYSIS OF 4-STROKE SI ENGINE PISTON


Posted by: project report maker
Created at: Monday 05th of July 2010 12:23:30 PM
Last Edited Or Replied at :Tuesday 09th of April 2013 01:03:03 AM
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Design and analysis of piston 4s S.I engine.

ABSTRACT
The projects DESIGN AND ANALYSIS OF 4-STROKE S.I. ENGINE PISTON is about designing the piston according to the forces acting on it from the gases, which are released during the combustion.
The piston head acts as a particular case and hence the piston is analyzed for the stresses developed due to the conditions.
At first, the piston is designed according to the specifications. After the designing, the model is subjected to certain conditions. According to the conditions we have checked the stresses acting on it and checked the ..................==> [ Click Here to Read More ]



Page Name: VVT-i


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 11:59:05 AM
Last Edited Or Replied at :Saturday 20th of September 2008 11:59:05 AM
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exhaust camshafts) was first introduced in the RS200 Altezza's 3S-GE engine. Dual VVT-i is also found in Toyota's new generation V6 engine, the 3.5L 2GR-FE V6. This engine can be found in the Avalon, RAV4, and Camry in the US, the Aurion in Australia, and various models in Japan, including the Estima. Other Dual VVT-i engines will be seen in upcoming Toyota models, including a new 4 cylinder Dual VVT-i engine for the new generation 2007/2008 Corolla. Another notable implementation of the Dual VVT-i is the 2GR-FSE D-4S engine of the Lexus GS450h. By adjusting the valve timing, engine start and..................==> [ Click Here to Read More ]



Page Name: gate valve


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 11:58:04 AM
Last Edited Or Replied at :Friday 27th of July 2012 12:39:10 PM
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A gate valve is a valve that opens by lifting a round or rectangular gate out of the path of the fluid. The distinct feature of a gate valve is the sealing surfaces between the gate and seats are planar. The gate faces can form a wedge shape or they can be parallel. Gate valves are sometimes used for regulating flow, but many are not suited for that purpose, having been designed to be fully opened or closed. When fully open, the typical gate valve has no obstruction in the flow path, resulting in very low friction loss.


Gate valves are characterised as having either a rising or a nonrisin..................==> [ Click Here to Read More ]



Page Name: VANOS Variable Nockenwellen Steuerung


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 11:56:59 AM
Last Edited Or Replied at :Tuesday 19th of January 2010 07:24:56 AM
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VANOS (Variable Nockenwellen Steuerung) is an automobile variable valve timing technology developed by BMW in close collaboration with Continental Teves. VANOS varies the duration of the intake valves by moving the position of the camshafts in relation to the drive gear. This movement varies from 6degrees of advanced to 6degrees of retarded camshaft timing. BMW recently began offering 'double' VANOS, which operates on the exhaust camshaft as well, on a number of its cars...................==> [ Click Here to Read More ]



Page Name: Gasoline direct injection or GDI


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 11:55:43 AM
Last Edited Or Replied at :Friday 29th of June 2012 03:32:57 AM
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Gasoline direct injection or GDI is a variant of fuel injection employed in modern four stroke petrol engines. The gasoline or biobutanol is injected right into the combustion chamber of each cylinder, as opposed to conventional multi point fuel injection that happens in the intake manifold.

GDI enables stratified charge (ultra lean burn) combustion for improved fuel efficiency and emission levels at low load. Further improving efficiency and high-load output-power, the engine power is governed by modulating fuel injection, like a diesel engine; as opposed to restricting intake airflow, lik..................==> [ Click Here to Read More ]



Page Name: Valvetronic


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 11:55:16 AM
Last Edited Or Replied at :Saturday 20th of September 2008 11:55:16 AM
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added to many of BMW's engines. The Valvetronic system is coupled with BMW's proven double-VANOS, to further enhance both power and efficiency across the engine speed range. Valvetronic will not be coupled to BMW's N53 and N54, 'High Precision Injection' (gasoline direct injection) technology due to lack of room in the cylinder head.

Cylinder heads with Valvetronic use an extra set of rocker arms, called intermediate arms (lift scaler), positioned between the valve stem and the camshaft. These intermediate arms are able to pivot on a central point, by means of an extra, electronicly actuat..................==> [ Click Here to Read More ]



Page Name: BlueTec


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 11:52:33 AM
Last Edited Or Replied at :Tuesday 27th of July 2010 02:37:32 AM
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BlueTec is DaimlerChrysler's name for its two nitrogen oxide (NOx) reducing systems, for use in their Diesel automobile engines. One is a urea catalyst called AdBlue, the other is called DeNOx and uses an oxidising catalytic converter and particular filter combined with other NOx introduced the systems in the reducing systems. Both systems were designed to slash emissions further than ever before. Mercedes-BenzE-Class (using the 'DeNOx' system) and GL-Class (using 'AdBlue') at the 2006 North American International Auto Show as the E 320 and GL 320 Bluetec. This system makes these vehicles 45-s..................==> [ Click Here to Read More ]



Page Name: List of mechanical Seminar topics4


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 11:52:04 AM
Last Edited Or Replied at :Wednesday 26th of February 2014 02:29:45 PM
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wheel Batteries
Highly Productive And Reconfigurable Manufacturing System, (Hiparms)
Hydrogen Car
Active Control of Near-Wall Turbulent Flow
Power frequency magnetic fields
Multi Valve Engine
Power System Contingencies
Non Destructive Evaluation Techniques
Trenchless Technology
Recycling Of Plastics
Low Cost Spacecraft Simulator
Particle Reinforced Aluminium Matrix Composites
Total Productive Maintenance
New Finite Element Analysis for Unsteady 3D Natural Convection
Electric Automobiles
Modern Air Pollution Control Technologies
Expert Technician System
Explosive Welding
O..................==> [ Click Here to Read More ]



Page Name: 10 tips to take a seminar


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 10:11:25 AM
Last Edited Or Replied at :Thursday 15th of August 2013 05:03:47 AM
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A speech needs time to grow. Prepare for weeks, sleep on it, dream about it and let your ideas sink into your subconscious. Ask yourself questions, write down your thoughts, and keep adding new ideas. As you prepare every speech ask yourself the following questions.

In one concise sentence, what is the purpose of this speech?
1) Who is the audience? What is their main interest in this topic?
2) What do I really know and believe about this topic as it relates to this audience?
3) What additional research can I do?
4) What are the main points of this presentation?
5) What supporting..................==> [ Click Here to Read More ]



Page Name: stratified charge engine


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 12:12:49 PM
Last Edited Or Replied at :Thursday 24th of January 2013 11:26:13 AM
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hat after the combustion process is complete, the resulting exhaust stream contains a considerable amount of free single atoms of oxygen and nitrogen, the result of the heat of combustion splitting the O2 and N2 molecules in the air. These will readily react with each other to create NOx, a pollutant. A catalytic converter in the exhaust system re-combines the NOx back into O2 and N2 in modern vehicles.

A Diesel engine, on the other hand, injects the fuel into the cylinder directly. This has the advantage of avoiding premature spontaneous combustion”a problem known as detonation or pi..................==> [ Click Here to Read More ]



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