six stroke-engine-presenation-by vijay b r

SIX STROKE ENGINESIX STROKE ENGINE

PREPARED BY:-PREPARED BY:-VIJAY B.RVIJAY B.R

NANDI INSTITUTE OF TECHNOLOGY NANDI INSTITUTE OF TECHNOLOGY AND MANAGEMENT SCIENCESAND MANAGEMENT SCIENCES

1AU11ME0201AU11ME020B.E(Mechanical Engineering)B.E(Mechanical Engineering)

CONTENTS

Introduction How six stroke engine works Working principle Gallery Video Comparison of six stroke engine with four stroke

engine Graphs Advantages and disadvantages applications Conclusion references

Introduction

Malcolm beare built an innovative hybrid design of the I C engine, by combining a two stroke with a four stroke engine.

The Beare Head is a new type of four stroke engine head design known as the “Beare Head”.

The Beare Head uses a piston and ports very much like a two stroke engine to replace the over 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 four stroke technology has given the engine its name – the “six stroke engine” (2 + 4 = 6).

process involved in the engine

•1st stroke (suction stroke)•2nd stroke (compression stroke)•3rd stroke (1st power stroke)•4th stroke (exhaust stroke)•5th stroke (2nd power stroke)•6th stroke (2nd exhaust stroke)

1 INTAKE VALVE2 HEATING CHAMBER VALVE3 COMBUSTION CHAMBER VALVE4 EXHAUST VALVE5 CYLINDER6 COMBUSTION CHAMBER 7 AIR HEATING CHAMBER VALVE8 WALL OF COMBUSTION CHAMBER9 FUEL INJECTERHEATING PLUG

WORKING PRINCIPLE

1st STROKE Intake of pure air in the

cylinder (suction stroke)

2nd STROKE Compression of pure air

in heating chamber (compression stroke)

3rd STROKE

Release the combustion gases in the cylinder (1st power stroke)

4th STROKE

Recompression of pure air in the combustion (exhaust stroke)

5th STROKE

Release of pure air into the cylinder (2nd power stroke)

6th STROKE

Exhaust of combustion gases (2nd exhaust stroke)

SIX STOKE ENGINE

6 stroke used in DUCATI

Comparison Of Six Stroke Engine With Four Stroke Engine

Advantages

1) Thermal efficiency reaching 50%.

2) Fuel consumption reduced by more than 40%.

3) Reduction of chemical, noise, thermal pollution, Less friction –so, less

ware and tear.

4) Cost is economical compare to 4 stroke engine.

5) optimal fuel combustion at every engine speed so Overall efficiency is

higher.

Advantages

7) Due to more air intake, the cooling system is improved.

8) It does not require basic modification to the existing engine, all

technological and production methods remain unaltered.

9) Less inertia due to lightness of moving parts.

10) Multifuels (diesel, L.P.G, petrol & Methanol-petrol mixture etc.)

Dis advantages

Engine size increases due to many number of cylinders & additional

components.

Break power & indicated power per cycle per cylinder is

comparatively lesser.

Applications

Perfectly suitable for Motorboats.

Motor –pumps ,stationary engines & generators, in

agriculture and industry field.

Heavy goods, automobiles & farm vehicles.

Many more applications may also be envisaged.

Conclusion

In a six stroke engine the energy absorption is less because of slower acceleration of reciprocating parts.

In the Beare design, per single cylinder, the number of parts is 15 compared to a four stroke of approx, 40 to 50 parts. Also, to reduce manufacturing costs is less

Increased torque and power output. The bottom piston is a standard design and the Beare Head bolts

directly o­nto the engine block.

Better fuel economy and cleaner burning longer service intervals and considerably reduced tooling costs when compared with a conventional four­stroke design.

For normal six­stroke car engine mileage for 4­5 liter is 100km.

In four stroke engine for every 2 complete rotation of crank shaft fuel ignition takes place, but in six­stroke fuel ignition takes place for every 3 complete rotation of crank shaft.

References

American Griffin Engine". Smokstak.com. 2014­02­07., linked photos and period diagrams British Stationary Engines. p. 83. surviving Griffin engine returns home to Bath museum". Culture24.org.uk. April 15, 2007. Retrieved 2014­02­07. "The Bajulaz Cycle: a Two­Chamber Internal Combustion Engine with Increased Thermal Efficiency". SAE Technical Paper Series (Feb., 1986,): 1–10. No. 860534. "A brilliant six­stroke from techies". 14 February 2007. Archived from the original on 22 February 2013. Retrieved 8 May 2012.kuehne@tobe4u.de. "A new Engine generation is born Kottmann­Motor­Team Six­Stroke­Engine. Sechstaktmotor.de. Retrieved 2014­01­31.

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