Seminar on Six Stroke Engine

Name – MD GULAM QUADIRRoll no – 13H11A0331Mechanical 4th year section (A)

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Contents Introduction Types of engines Engine Component Working of 6 stroke engine Comparison of 6 stroke with 4 stroke engine Advantages and disadvantagesConclusion Reference

Engine is a device which transform one form of energy into another form.

The six stroke engine “Using water” was developed By Brush Crower in 2006.

A six stroke engine that it is a mixture of two and four stroke engine.

The six stroke engine is a type of internal combustion engine based on the four stroke engine , but its additional two stroke make it more efficient and reduce emission.

Types of six stroke engines

1. Griffin six stroke engine. 2. Bajulaz six stroke engine. 3. Crower six stroke engine. 4. Velozeta six stroke engine.

Six stroke engine

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Actual Prototype of SIX Stroke engine

ENGINE

IC ENGINE

EC ENGINE

Types Of Engines

IC – Internal combustion engineEC – External combustion engine

The internal combustion is an engine in which the burning of a fuel occur in a confined space called “ IC ENGINE’.

An external combustion engine is heat engine where an(internal) working fluid is compressed and heated by combustion of an external fuel through the engine wall or heat exchanger.

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Component of engine

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Alternators – it is used to convert the mechanical energy into electrical energy.

Camshaft – it is used to controls the opening and closing of valves.

Time belt – a belt connected to both camshaft and crankshaft ensuring that they work in time with each other.

Sparkplug – it is a component to initiate the combustion process in spark ignition engine and is usually located on the cylinder.

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Working of six stroke engine

In first stroke(suction stroke)

Intake of pure air in the cylinder.

The valve is open.

Second stroke(compression

stroke)Compression of pure air in the heating chamber. Both valves are closed

Third stroke(power stroke)

In this stroke the piston moves downward and the power transmitted from piston to wheel.

Both valves are closed.

Fourth stroke(exhaust stroke)

Exhaust of the combustion gases.

The exhaust valve is open.

Fifth stroke(secondary power stroke)In this stage water is injected by an Injector in the form of fine droplets and the water converted into steam.

Both valves are closed.

Sixth stroke(secondary exhaust stroke)

At this stage water is injected by an Injector in the form of fine droplets.

Exhaust valve open.

Comparison Of Six Stroke Engine With Four Stroke

EngineIn otto cylce ,there are two adiabatic processes 1- Adiabatic compression 2- Adiabatic expansionAnd One constant volume heat Addition process and one constant volume heat rejection process

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The dual cycle consist of the following operations-

1- Adiabatic Compression2- Addition of heat at constant volume 3- Addition of heat at constant pressure 4- Adiabatic expansion 5- ejection of heat at constant volume

The heat is added partly at constant volume and partly at constant pressure;The advantage of which is that more time is available to fuel for combustion.

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parameters Four stroke engine

Six stroke engine

Strokes It consist a 4 strokes . It consist a 6 strokes .( add 2 additional strokes)

Thermal efficiency Low high

Weight Low High

Fuel consumptions High Low

Power Low High

Example- Car ,buses etc. Motor boat, high cost bikes(ex –Ducati).

Advantages of six stroke engine

The thermal efficiency reaching 40-50%.

Reduction in fuel consumption by at least 40%.

Dramatic reduction in pollution.

Increased torque and power output.

Disadvantage of six stroke Engine

Complex Head Design Complex Cam Design For Exhaust (Due to two exhaust strokes). Heavier Engine (Due to combustion engine). Manufacturing of essential part is difficult.Weight increases.

conclusion In a six stroke engine the fuel consumption is less.

Better fuel economy compared with a conventional four-stroke design.

Torque is increase by 35% and efficiency increased by the same.

It reduces the weight and complexity of the engines head by as much as 50%.

The concept of Six Stroke Engine seems to be rather eco-friendly and low fuel consuming which can fulfill the needs of near future.

Reference 1)www.wikipedia.com/wiki/six stroke 2)IC engine books.3)www.bajulazsa.com4)www.quora.com

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