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MULTI STAGE HYDRO- KINETIC

TORQUE CONVERTER

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A DIS-ADVANTAGE WITH THE POPULAR THREE

ELEMENT TORQUE COVERTER

ITS STALL TORQUE RATIO IS ONLY IN THE REGION OF

2:1

WHICH IS INSUFFICENT FOR SOME APPLICATIONS

BUT THIS TORQUE MULTIPLICATION CAN BE DOUBLED

BY INCREASING THE NO OF TURBINE & STATORMEMBERS,WITH THE CONVERTER

MORE STAGES OF CONVERSION

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MULTI STAGE TORQUE CONVERTER

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MULTI-STAGE (SIX ELEMENT) TORQUE CONVERTER

IT IS COMPRISED OF ONE IMPELLER

THREE INTERLINKED OUTPUT TURBINES

TWO FIXED STATOR MEMBERS

TRACING THE CONVERSION VORTEX CIRCUIT,

STARTING FROM THE INPUT ROTATING MEMBER

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PRINCIPLE OF THE MULTI STAGE TORQUE CONVERTER

FLUID IS PUMPED FROM THE IMPELLER PUMP BY CENTRIFUGAL FORCE TO

THE

TWO VELOCITY COMPONENTS Vt & Vr

MAKING UP THE RESULTANT VELOCITY Vp

Vp ENTERS BETWEEN THE FIRST TURBINE BLADES T1 AND SO, IMPARTS

SOME OF ITS HYDRO-KINETIC ENERGY TO THE OUTPUT

r= RADIAL t= TANGENTIAL

FLUID THEN PASSES WITH A VELOCITY Vt1 TO THE FIRST FIXED STATOR S1

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AT THE FIRST FIXED STATOR S1 IT IS GUIDED & RE-DIRECTED WITH A

RESULTANT VELOCITY Vs1 MADE UP FROM THE RADIAL & TANGENTIAL

VELOCITIES Vr & Vt

TO THE SECOND SET OF TURBINE BLADES T2

SO THAT THE MOMENTUM IS GIVEN TO THIS MEMBER

FLUID IS NOW TRANSFERD FROM THE EXIT OF THE SECOND TURBINE T2

TO THE ENTRANCE OF THE SECOND STATOR S2

HERE THE REACTION OF THE CURVEST BLADES DEFLECT THE FLUID

TOWARDS THE

THIRD TURBINE BLADES T3, WHICH ALSO ABSORBS THE FLUIDS THRUST

FINALLY THE FLUID COMPLETES ITS CIRCULATION CYCLE BY AGAIN

ENTERING THE IMPELLER PASSAGES

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LIMITATIONS OF MULTI-STAGE CONVERTER:

AN INCREASED NO OF ENTRY AND EXIT FUNCTIONS ,

BETWEEN VARIOUS MEMBERS

WHICH RAISE THE FLUID RESISTANCE AROUND THE TORUS

PASSAGES

SUBSEQUENTLY, EFFICENCY DROPS OFF FAIRLY, RAPIDLY

WITH HIGHER SPEED RATIOS, COMPARED TO THE 3 ELEMEMT

CONVERTER