Quasiturbine

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Presentation Transcript

Quasiturbine Future Trends in Automobile Engine : 

Quasiturbine Future Trends in Automobile Engine Prepared by, K.Arun, ME-ED(2009-10) Bannari Amman Institute of Technology, Sathyamangalam - 638 401Erode District, Tamil Nadu, India

Contents : 

Contents Types of engines Quasiturbine Construction Quasiturbine combustion cycle Working Applications Conclusion Reference

Types of engines : 

Types of engines 2 Stroke & 4 Stroke engine Radial engine Wankel engine Quasiturbine engine

2 Stroke Engine : 

2 Stroke Engine 4-Stroke-Engine

Radial engine : 

Radial engine

Wankel engine : 

Wankel engine

The Michel Cam Engine If you find the drawings less than clear (and they seem to have defeated the the original author of the document) this should make all plain : 

The Michel Cam Engine If you find the drawings less than clear (and they seem to have defeated the the original author of the document) this should make all plain

Slide 8: 

The Marchetti Cam Engine Note that the bell-crank cam followers are pivoted on arms that move the pivot point inwards

Quasiturbine : 

Quasiturbine Producing a strong torque at low RPM under a variety of modes and fuels Quasiturbine design can also be used as an air motor, steam engine, gas compressor The Quasiturbine is also an optimization theory for extremely compact and efficient engine concepts The Quasiturbine (Qurbine) is a no crankshaft rotary engine having a 4 faces articulated rotor with a free and accessible center

Construction : 

Construction The four strokes of a typical cycle, Otto cycle are arranged sequentially around a near oval An oval housing surrounds a four-sided articulated rotor which turns and moves within the housing The sides of the rotor seal against the sides of the housing, and the corners of the rotor seal against the inner periphery, dividing it into four chambers

Quasiturbine combustion cycle : 

Quasiturbine combustion cycle

Quasiturbine or Qurbine engine : 

Quasiturbine or Qurbine engine

Piston Deficiencies : 

Piston Deficiencies The 4 strokes engine should not be of equal duration. The piston makes positive torque only 17 % of the time and drag 83 % of the time. The valves open only 20 % of the time, interrupting the flows at intake and at exhaust 80 % of the time. The average torque is only 15 % of the peak torque, which imposes a construction robustness for the peak 7 times the average. Complete reversal of the flows from intake to exhaust. Quite important noise level and vibration.  Without being pretentious, the fact is that the Quasiturbine corrects or improves each of these deficiencies.

Continuous combustion with lower temperature : 

Continuous combustion with lower temperature The thermalisation of the Quasiturbine by contacts with rollers (Model AC) is more effective, and prevents hot point From the thermal point of view, the Quasiturbine does not contain any internal parts requiring coolant fluid (like oil)

Low revolution - Reduction of gearbox ratio : 

Low revolution - Reduction of gearbox ratio An automobile wheel generally does not rotate to more than 800 or 1000 RPM, which is 4 to 5 times less than the engine RPM As the Quasiturbine turns 4 to 5 times less quickly than the other engines (including the Wankel) The gear boxes can often be removed (amongst other things in the field of transport) with an increase in efficiency. The RPM required by the human activity are generally lower that the performance optimum speed of the engines

High Torque : 

High Torque Several engines may match in power, but not in rpm or torque Gas or steam turbines may rotate over 10,000 rpm Human need is generally low rpm. For example, a car wheel on the highway turns around 800 to 1400 rpm Gearboxes are used to match torque and rpm with engine, but they are costly, sensitive, heavy and energy consuming There is a strong demand for high torque at low rpm, a condition not easy to produce directly within an engine

There are at least three proposed designs: : 

There are at least three proposed designs: Two-port with carriages, suitable for use as an internal combustion engine Four-port without carriages, suitable for use as a pneumatic or hydraulic engine, steam engine or pump Another conceptual design using a fixed charge of gas, with no ports and without carriages, as a Stirling engine

Global Economic : 

Global Economic Not only the Quasiturbine is less expensive to manufacture and to sale, but because its numerous unique characteristics, it generates savings in Application integration design and process In use, by direct efficiency improvement In co-lateral damages due to vibration In maintenance and expected engine lifetime In reducing weight and space Environmental measures and concerns

The main problems with this design are : 

The main problems with this design are It has far more moving parts than the Wankel engine It has never been shown to work as an internal combustion engine For all other possible uses there are many other designs that are more reliable and function more efficiently

Applications : 

Applications Vehicles Military applications Public utilities

Conclusion : 

Conclusion The most important revolution of the Quasiturbine come from its characteristics permitting photo-detonation which occurs at slightly higher compression ratio than the thermal ignition, designated in the US as "Homogeneous Charge Compression Ignition" HCCI combustion Even if the subject passionate the researchers, the thermal and photonic ignition control in the piston is still an unsolved problem, and possibly a dead-end that the Quasiturbine does overcome!

Reference : 

Reference http://peswiki.com/index.php/PowerPedia:Quasiturbine http://en.wikipedia.org/wiki/Quasiturbine#References WWW.QUASITURBINE.COM WWW.FUTUREENERGIES.COM www.visionengineer.com/mech/quasiturbine.php

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