6 stroke engines

7/27/2019 6 Stroke Engines

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A presentation on 6-Stroke

Engines

Presented by

Pranav Jadhav

Mihir Athavale

Rajiv Gandhi Institute

of Technology


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Contents

Introduction

Construction

Working

Comparison of 4-stroke and 6-stroke engines

Types

Advantages and Disadvantages

Scope


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Introduction

1. The six-stroke engine is a type of internal combustionengine based on the four-stroke engine, but with additionalcomplexity to make it more efficient and reduce emissions.Two different types of six-stroke engine have beendeveloped since the 1990s:

2. In the first approach, the engine captures the heat lost fromthe four- stroke Otto cycle or Diesel cycle and uses it topower an additional power and exhaust stroke of thepiston in the same cylinder. Eg.Crower Engine,BajulazEngine and Velozeta Engine.

3. The second approach to the six-stroke engine uses asecond opposed piston in each cylinder that moves at halfthe cyclical rate of the main piston, thus giving six pistonmovements per cycle.Eg. Beare Head Engine,M4+2 Engineand piston charger Engine.


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Construction

1. Intake Valve

2. Heating ChamberValve

3. Combustion Chamber

valve4. Exhaust valve

5. Cylinder

6. Combustion Chamber

7. Air Heating Chamber8. Wall of Combustion

chamber

9. Fuel Injector

10. Heater Plug


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Video of an actual 6-stroke

engine


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Comparison of 4-stroke and 6-stroke

Engines

1. Less Energy absorption due to slower

acceleration of reciprocating parts.

2. Less number of parts, 15 as compared to 40-

50 in four stroke.

3. Reduction of weight and complexity of

engine.

4. Increase in torque and consumption by about35% .

5. Better fuel economy, cleaner burning and

longer service intervals.


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Comparison of 4-stroke and 6-stroke

Engines


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Crower 6-stroke Engine


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M4+2 Engine

1. Combination of a 4-stroke and 2-strokeEngine.

2. Both the pistonshave different

speeds.3. Two crankshafts

connected withspecialtransmission.

4. It is also calleddouble pistonsbecause of itsconstruction- doublepistons and

crankshafts


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Advantages of a 6-stroke

Engines

1. Thermal efficiency reaching 50% as compared to30% that of 4-stroke Engines.

2. Fuel consumption reduced by more than 40%.

3. Reduction of chemical, noise and thermalpollution.

4. Two expansions (work) through six strokes.

5. Direct injection and optimal fuel combustion at

every engine speed.6. Multiple fuel can be used.

7. Less Stable because of more strokes


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Applications and Scope

1. Motorboats (inboard and outboard engines) might offer

a big outlet for this type of engine. Their characteristics

are perfectly suited to its use (economy, safety,

simplification, and reduction in noise and pollution).

Furthermore, the use of fuels other than gasolinewould greatly reduce the risks of explosion.

2. Using non-fossil fuels of vegetable origin, natural

gases and others, in simple, robust engine, operating

with a minimum of adjustments and non-pollutant,would offer great advantages when provided for motor-

pumps, generator sets, stationary engines,

etc....intended for agriculture and industry.


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Thank You Folks..!!

6 stroke engines

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