7/27/2019 6 Stroke Engines
1/14
A presentation on 6-Stroke
Engines
Presented by
Pranav Jadhav
Mihir Athavale
Rajiv Gandhi Institute
of Technology
7/27/2019 6 Stroke Engines
2/14
Contents
Introduction
Construction
Working
Comparison of 4-stroke and 6-stroke engines
Types
Advantages and Disadvantages
Scope
7/27/2019 6 Stroke Engines
3/14
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.
7/27/2019 6 Stroke Engines
4/14
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
7/27/2019 6 Stroke Engines
5/14
7/27/2019 6 Stroke Engines
6/14
7/27/2019 6 Stroke Engines
7/14
Video of an actual 6-stroke
engine
7/27/2019 6 Stroke Engines
8/14
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.
7/27/2019 6 Stroke Engines
9/14
Comparison of 4-stroke and 6-stroke
Engines
7/27/2019 6 Stroke Engines
10/14
Crower 6-stroke Engine
7/27/2019 6 Stroke Engines
11/14
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
7/27/2019 6 Stroke Engines
12/14
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
7/27/2019 6 Stroke Engines
13/14
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.
7/27/2019 6 Stroke Engines
14/14
Thank You Folks..!!