Water Inject Six Stroke Engine123 (1)

8/3/2019 Water Inject Six Stroke Engine123 (1)

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Water inject six stroke

engine

ABSTRACT

One of the most difficult challenges in engine technologytoday is the urgent need to increase engine thermal

efficiency.

In the first approach, the engine captures the heat lost from

the four-stroke Otto cycle or Diesel cycle and uses it to

power an additional power and exhaust stroke of the piston

in the same cylinder.

The pistons in this type of six-stroke engine go up and downsix times for each injection of fuel.

Fresh water is injected into the cylinder after the exhaust

stroke and is quickly turned to superheated steam, which

causes the water to expand to 1600 times its volume and

forces the piston down for an additional stroke.

A cooling system also serves to maximize volumetric charge

efficiency by reducing the temperature of the charge duringintake.

This design also claims to reduce fuel consumption by 40%.


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INTRODUCTION

A six stroke engine describes a number of different

approaches in the internal combustion engine to capture the

waste heat from the four stroke engine and use it to power

an additional power and exhaust stroke of the piston.

In our paper we utilise the waste heat from the exhaust and

inject the treated water at end of the fourth stroke.

The water will convert into steam it will give additional

power stroke of the engine.

By this additional stroke we can reduce the temperature of

the engine.

As well as extracting power, the additional stroke cools the

engine and removes the need for a cooling system making

the engine lighter and giving 40% increased efficiency.

The pistons in a six stroke engine go up and down six times

for each injection of fuel.

DIFFERENT TYPES OF SIX-STROKE ENGINES

Griffin six stroke engine,

Bajulaz six stroke engine,

Velozeta six-stroke engine,

Charge pump engine,


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Beare Head Engine

Crower six stroke engine

SIX STROKE ENGINE

This engine is more efficient and powerful than the existing

four stroke engines.

The engine is also having the scope of using heavy fuels and

bio-fuels.

The engine with varied thermodynamic cycle of operation

has better thermodynamic efficiency, reduced fuel

Consumption, reduced pollution.

Nearly 40% more fuel efficiency can be obtained

THE SIX STROKES

Intake Stroke

Compression Stroke

Power Stroke

Exhaust Stroke

Steam Stroke

Exhaust Stroke


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FIRST STROKE

During the first stroke the inlet

valve is opened and air or air-fuel mixture is sucked

into the cylinder.

SECOND STROKE

During this stroke air or air fuel

mixture compressed to the maximum pressure.

THIRD STROKE

This is first power stroke of the

engine. This is given by primary fuel (petrol or diesel

or LPG). During this stroke all valves are remains

closed.

FOURTH STROKE

During this stroke exhaust valve will

be opened and burned gases send out to the atmosphere

through the heat recovery system for warm-up the water.

FIFTH STROKE

In this stroke, Water is injected into the

hot cylinder through the steam valve. By absorbing the


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heat from cylinder wall, the steam expands causing the

piston to move down.

SIXTH STROKE

The expanded steam escapes through

the opened exhaust valve and hence the piston moves

upward. These exhaust steams also send via heat

recovery system for warm-up the water.

WORKING OF SIX STROKE ENGINE


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VALVES USED IN ENGINES

Inlet Valve

Exhaust Valve

Water injector

Inlet Valve:

It opens to supplied fresh air or air-fuel into the

cylinder.


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Exhaust Valve:

It opens to remove the burned gases and steam

from the cylinder.

Water injector:

It opens to inject the water into the cylinder

with high pressure.

HEAT RECOVERY SYSTEM


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The main objective of this paper is to utilise the heat from

exhaust by a system called heat recovery system

This system utilise the waste heat from the burned fuel and

exhaust steam

Water tank is placed inside the recovery tank

At same time the exhaust burned gas and steam are going

through this tank continuously heat the water before

injecting it to the cylinder

BLOCK DIAGRAM OF HEAT RECOVERY SYSTEM


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MODIFICATION OF MATERIAL

Since minimum cooling surface is necessary for high

efficiency engine operation

The heat of combustion chamber should be retained and

should not be rejected to a cooling system if possible

The piston, cylinder and cylinder head can either be coated

with a thermally insulating material like zirconium or they

can be comprised of a thermally insulating ceramic like

silicon nitride.

SOME FACTS ABOUT SIX-STROKE ENGINE

The water enters only when the temperature inside the

cylinder reaches above 250oC.

The water cannot enter the spark plug, because of high

temp.

The cylinder will not get rusted because engine will run for15-30 sec before it shuts down.

Distilled water in order to avoid corrosion.

The heat from the exhaust (both Steam and burnt gases) is

reused to heat the water to produce steam.

The six-stroke engine does not require any basic

modification to the existing engines. All technologicalexperience and production methods remain unaltered.

It can be working under multi fuel.


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ADVANTAGES

It is having high efficiency compared to 4-stroke or 2-stroke

engine.

Improves a typical engines fuel consumption.

No cooling system required.

The weight and power loss of most conventional cooling

system parts such as the fan, radiator and coolant pump can

be eliminated.

High Mechanical efficiency.

Physical engine size reduction.

The higher percentage of power strokes may allow lower

working speeds, with higher torque output at lower and

broader rpm ranges.

Reduced exhaust emissions per a given power range, COcan

reduce up to 65%

CONCLUSION

A good engine needs high efficiency, high

performance characteristics, low emission

standards.

It seems that the above mentioned solution

meets all these specified standards.

This engine is reducing fuel consumption and

pollution without affecting performances

drastically.


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It has Up to 40% reduction in fuel consumption

and 60% to 90% in polluting emissions,

depending on the type of fuel being used.

Water Inject Six Stroke Engine123 (1)

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