SEMINAR ON

QUASI TURBINE ENGINE

THE NEXT GENERATION ROTARY ENGINES

Presented by,Abhishiq majeed

Department of Mechanical Engineering ,SSET

CURRENT TECHONOLGY AVAILABLE

Reciprocating engines

•4 stroke engines makes positive torques only 17% of time and drags 83% of time •Many reciprocating parts-problem in balancing forces•Higher hydrogen emissions-pollution •The unbalanced inertia force and resulting slap can cause noise and vibrations•Thermal efficiency is low

ROTARY ENGINES(WANKEL ENGINE)

•Very slow combustions•Has problems in rotor sealing•High emissions-pollution •Less fuel efficiency

QUASI TURBINE -HISTORY Invented by group of 4 researchers, leaded by Dr. Gilles Saint Hillarie It was patented in 1996

WHAT IS QUASI TURBINE The Quasi turbine engine is a proposed piston less rotary engine using a

rhomboidal rotor whose sides are hinged at the vertices. The volume enclosed between the sides of the rotor and the rotor casing provide compression and expansion in a fashion similar to the more familiar Wankel engine, but the hinging at the edges allows the volume ratio to increase . It is a crank less engine and produces high torque at low RPM.

CONSTRUCTION

Two types of quasi turbine engine models

•Without carriages

•With carriages

Quasi Turbine Model Without Carriages

An oval housing Four sided rotor Inlet and exhaust port Spark plug

Quasi turbine Model with Carriages

4 carriages Each carriage consist 2 wheels

Each blade has a filler tip and traction slots

A pivot forms the end of each blade

WORKING INTAKEwhich draws in a mixture of fuel and air 

COMPRESSION which squeezes the fuel - air mixture into a smaller volume.

COMBUSTIONwhich uses a spark from a spark plug to ignite the fuel.

EXHAUSTwhich expels waste gases (by-products) from the engine. 

QUASI ENGINE WITHOUT CARRIAGES

QUASI ENGINE WITH CARRIAGES

OUTPUT MECHANISIM The coupling arm is fitted to the traction slots The output shaft is connected to the coupling arm

ADVANTAGES Simple design and small size Less noisy Less vibrations are produced because the engine is perfectly balanced High thermal efficiency Better conversion and transmission of mechanical energy Better torque continuity Faster acceleration Higher torque at lower RPM\ Nearly oil free operation Fewer moving parts so less wear and tear Compatible with photo detonation Multi fuel ability

LIMITATIONS The quasi turbine is built with aluminum and cast iron , Differential thermal

expansion or contraction in material lead to some incidences of leakage Construction of rotor is bit difficult. The quasi turbine is still in infancy. It is not used in real world applications .

APPLICATIONS Aviation industry- High power-to-weight ratio No vibration -Chainsaws,   Air Compressors, Supercharger  Military vehicles Pneumatic engine Pneumatic pumps

CONCLUSION

I conclude just by saying that in the near future we would definitely see Quasi turbine used in more than just your car.

WELCOME TO A POST PISTON ENGINE ERA !