SIX STROKE ENGINE

PRESENTED BY – VIBHOR SHAH

CONTENTS

What is SIX STROKE ENGINE ??? CROWER Six Stroke Engine Working Advantages Limitations & Obstacles Embetterment Conclusions Queries

WHAT IS SIX STROKE ENGINE???

The SIX-STROKE Engine is a type of internal combustion engine based on the four-stroke engine, but with additional complexity intended to make it more efficient and reduce emissions.

There are two power strokes: one with fuel, the other with steam or air.

ACTUAL PROTOTYPE OF SIX STROKE ENGINE

CROWER SIX STROKE ENGINE The CROWER six-stroke engine is a claimed high-efficiency

variant of an internal combustion engine under development by Bruce Crower.

Two extra strokes are added to the customary internal combustion engine, which makes a six stroke engine. A third down-stroke is a "steam stroke" and a third up-stroke exhausts the expanded steam while venting heat from the engine.

WORKING

In a six-stroke engine, when the combustion chamber temperature reaches approx. 400 °F (200 °C). Just before the fifth stroke, fresh water is injected directly into the hot combustion chamber  through the engine's fuel injector pump, which 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 Power stroke.

WORKING OF SIX STROKE ENGINE

ANIMATED WORKING OF SIX STROKE ENGINE

ADVANTAGES

There is 40% reduction in fuel consumption. Extracts work from heat that is ordinarily lost through the

cooling system of a conventional engine. Reduces exhaust emissions per a given power range. Steam stroke cools the engine internally hence the use of much

higher compression ratios. The weight and power loss of conventional cooling system

parts can be eliminated.

LIMITATIONS AND OBSTACLES

Injecting relatively cold water onto a hot metal piston can damage it over time from thermal expansion and contraction.

Separate water tank would have significant weight and space penalties

A steam-free cool down reduces the temperature inside the combustion chamber.

Cold climate anti-freezing measures would be needed in the water reservoir.

BETTERMENT

To prevent damages due to the action of cold water, we can utilize the exhaust gases for pre- heating of water.

We can use a condenser instead of a separate water tank which will reuse the distilled water for a period of cycles.

To compensate the temperature drop inside the chamber we can further increase the Compression ratio which increases the power output making it suitable for higher power requirements.

CONCLUSIONS

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

A lot of experiments are being conducted in order to improve the efficiency and workability of the engine.

QUERIES

THANK YOU……HAVE A NICE DAY……