Six Stroke Engine Presentation

8/2/2019 Six Stroke Engine Presentation

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Six Stroke EngineUnder the guidance ofMr. Ch. V. Parameshwar Rao

By

SwapnilTuljapurkar(08J11A04C6)


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Contents

Abstract

Layout of a Six Stroke Engine

Working Principle Advantages of a Six Stroke Engine

Conclusion


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Abstract

Malcolm Beare built an innovative hybriddesign of the IC engine, by combining a twostroke with a four stroke engine.

The Beare Head is a new type of four strokeengine head design known as the BeareHead

The Beare Head uses a piston and ports verymuch like a two stroke engine to replace theover head valve system that is found in four

stroke engines today. The four stroke block,pistons and crankshaft remain unaltered.This combination of two stroke and fourstroke technology has given the engine itsname the six stroke engine (2 + 4 = 6).


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Layout of a Six Stroke Engine


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HOW SIX STROKE ENGINE WORKS


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Working Principle

Fuel ignites with

piston at the top

dead center.


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Rotary valve

opens, allowingexhaust to

escape


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Exhaust

stroke begins

when the

piston is atbottom dead

center


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Exhaust stroke

ends, intake

begins. rotary

valve cutsexhaust .intake

of charge into

cylinder due topressure

difference.


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The intake strokehappens when thepiston is on itsdownward path

with the intakevalve open. Thisaction createssuction, drawing

atomized fuel inthis case gasolinemixed with air, intothe combustion

chamber.


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Top piston

nearly closes

complete inletport and The

compression

begins.


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Combustion

chambercompletely sealed

and ready for the

combustion.


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The power strokebegins at a criticalmoment, just as the air-

fuel mixture is at its mostcompressed. Asupercharged voltage isdelivered to the sparkplugs from the ignition

coil, at that point it ignitesthe fuel mixture. Thevalves in the engine arestill closed during thisperiod. Thus the

explosion forces thepiston down to turn theengine's crankshaft,delivering the power viathe gearbox and clutch to

the driving wheels.


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Prototype Ducati 250Z


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Advantages of a Six StrokeEngine In a six stroke engine the energy

absorption is less because of sloweracceleration of reciprocating parts.

It reduces the weight and complexityof the engines head by as much as50%.

Torque is increased by 35% andefficiency increased by the same.


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The number of parts is 15 comparedto a four stroke of approx 40 to 50

parts. Also, to reduce manufacturingcosts the head and block can bemachined in one piece.

Better fuel economy and cleanerburning longer service intervals andconsiderably reduced tooling costswhen compared with a conventional

four-stroke design. Longer service intervals like once in

5000kms.


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Conclusion

The six stroke engine stands atop the4-stroke engine in several aspects likefuel efficiency, torque, reduced wear

and tear of engine components. This is presently being employed in

racing vehicle engines which needmore acceleration, maximum possible

torque and velocity. Very soon it will be used in general

transport vehicles.


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Six Stroke Engine Presentation

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