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BALL PISTON ENGINE

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by

siddharth kshirsagar

on 20 September 2013

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Transcript of BALL PISTON ENGINE

DESIGN FEATURES
1. PORTING REQUIRED FOR FOUR STROKE IS ACHIEVED WITH NO ADDITIONAL MOVING PARTS AND VALVE TRAIN LOSSES BUT ONLY SIMPLE PORT CLOCKING WITHIN ROTOR STATOR INTERFERENCE HAVING SIMPLE GEOMETRY.
2. ALSO CYLINDE INDUCTION AND MIXING ARE AIDED BY CENTRIFUGAL AND CIRIOLIS COMPONENTS MINIMIZING FRICTION.
3.INSTEAD OF 4 WE CAN ALSO USE 8, 12 OR MORE IN PARALLEL OR SEATED ARRANGEMENT OR BY USING DUAL ROTOR.
4. DUE TO SYMMETRY BALL INERTIA IS BALANCED AS A RESULT OF HEAT LOSSES ARE VERY LESS.

OVERVIEW
1. MECHANICAL DYNAMICS OF DESIGN ARE CONCEPTUALLY BASED ON 2-D EQUATIONS.
2. RESULTING BALL PISTON DESIGN IS NOT A PERPETUAL MACHINE.
3. TRANSLATIONAL AND ROTATIONAL KINETIC ENERGY IS EXCHANGED TO ACHIEVE DESIRED EFFECT.
4, DUAL BALL TRACK ALLOWS CHANGING OF ROLLING RADIUS AND THUS INCREASING DEGRESS OF FREEDOM TO ACIEVE NECESSARY BALANCE.
5. LOSSES DUE TO LEAKAGE CAN BE REDUCED BY INCREASING ROTOR SPEED AND STROKES PER REVOLUTION BY USING HIGH VISCOSITY FLUID.
6. EFFICINCY IS DIRECTLY RELATED TO CYLINDER WALL FRICTION.
BALL PISTON ENGINE
A patented new power machine concept has been designed and analyzes for production, and proof of principle subscale tests have been performed with positive results. The machine design concept is applicable as a compressor, pump, motor, or engine .Simplicity of design based on spherical ball piston enables a low moving part count, high power to weight ratio, elimination of valve train and water cooling systems and perfect dynamic balance. The new design concept utilizes novel kinematic design to completely eliminate inertial loads that would contribute to sliding friction. Also, low leakage is maintained without piston rings by using a small clearance on ball piston, resulting a chocked flow past the ball. These features provide
potential for an engine with higher efficiency than conventional piston rings. The engine design utilizes existing recent technology to advantage, such as silicon nitride balls pistons, so a large development effort is not required.

INTRODUCTION
THE ORIGINAL CONCEPT WAS INTRODUCED IN YEAR ‘1990’MODIFY VERSION OF TRIED & PROVEN OTTO CYCLE NO. OF STROKES ‘4’ OR ‘8’ OR ’12’ OR MORE FRICTION REDUCE BY USING HYDRODYNAMIC LUBRICANT ROTARY TYPE OF I.C.ENGINE.IT IS A POSITIVE DISPLACEMENT ENGINE THAT CONVERTS PRESSURE AND HEAT ENERGY INTO RECIPROCATING SHAFT ENERGY. IT HAS ONLY ONE MOVING PART THAT IS BEARING. AS THE MAIN SUGGESTS BALL PISTON ENGINE PROVIDES A PROPER ALIGNMENT BETWEEN PISTON AMD CYLINDER WITHOUT ACTUAL CONTACT.
MODES OF OPERATIONS
OPERATION OF BALL PISTON ENGINE IS MAINLY DIVIDED INTO 4 IMPORTANT STAGES:--

1. STAGE ONE : INTAKE STROKE

2. STAGE TWO: COMPRESSION STROKE

3. STAGE THREE: POWER STROKE

4. STAGE FOUR: EXHAUST STROKE

SECTION VIEW OF FOUR STROKE ENGINE
ADVANTAGES
1. LOW MOVING PARTS
2. HIGH POWER TO WEIGHT RATIO
3.WATER COOLING SYSTEM
4. PERFECT DYNAMIC BALANCE
5. ELIMINATION OF INERTIAL LOADS
6.HIGH EFFICIENCY AND LOW LEAKAGE
7. LATEST TECHNOLOGY OF SILICON NITRIDE BALLS
8. LARGE DEVELOPMENT EFFORT NOT REQUIRED
DISADVANTAGES
1. LEAKAGE CHANCES AT LOW SPEED.
2. CHOKING DUE TO HIGH PRESSURE DIFFERENCE AND LOW CLEARANCE AREA.
3. WEAR AND FRICTION SOMETIMES DUE HIGH RELATIVE SLIDING SPEED.
4. HIGH SLIDING FLASH TEMPERATURES.
DESIGN CONCEPT
THOUGH THE PHYSICS OF BALL PISTON ENGINE IS COMPLICATED BUT ITS DESIGN CAN BE EASILY EXPLAINED BY MAINLY TWO PARTS:-

1. ROTAR
2. BALL BEARINGS USED AS PISTON
END SECTION VIEW OF A FOUR STROKE ENGINE WITH ACTUAL DESIGN OF BALL PISTON ENGINE
PROOF OF PRINCIPLE TESTING
TESTS WERE CARRIED OUT TO IMPROVE THE RESULTS OCCURING FOR LEAKAGE AND FRICTION.
BASED ON THAT RESULTS GRAPHS WERE ALSO PLOTTED. AND IMPROVEMENTS WERE MADE ACCORDINGLY.
GRAPHS OF INCREASE IN FRICTION WITH INCREASE IN SPEED
WHAT MAKES BALL PISTON ENGINE MORE SUPERIOR ??
THANK YOU BURANDE SIR FOR YOUR SINCERE CO-OPERATION.
CONCLUSION
1. ANALYSIS SHOWS THAT BALL ENGINE HAS MORE POTENTIAL TO ACHIEVE DESIRE EFFICINECY THAN I. C ENGINES
2. TESTS HAVE SHOWN THAT CRITICAL LEAKAGE AND FRICTION CHARACTERISTICS ARE CONSISTENT.
3. A NEW OPTION TO KINEMATIC DESIGN HAS BEEN DEVISED TO ELIMINATE FRICTION CONTRIBUTIONS FROM INERTIAL FORCES.
4. FOR PRECISE MANUFACTURING AND AS A NEED FOR IMPROVED PRODUCTION BALL PISTON ENGINE IS A NEED OF FUTURE GENERATION.
SIDDHARTH KSHIRSAGAR
T.E. MECHANICAL
BATCH:- 2013-2014
PRESENTATOR

HEART OF A MACHINE
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