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Rotary Engines
- Thread starter flimper
- Start date
Its been years since I looked at these, but I always though it was a 1.3 x 2 because of its twin rotors, i.e 1.3 per rotor. So really more like a 2.6. Even at that the fuel economy is still really poor and the torque is none existent. The final nail in their coffin for many was they need rebuilding far far to frequently. To the point where alot of UK warranty companies refused to cover them.
Never heard of it being described as 3.9
As far as I understand you have the inlet chamber, combustion chamber and then exhaust chamber. There are two of these so gives it the commonly listed 2.6ltr description. Though I could have this all wrong?
As far as I understand you have the inlet chamber, combustion chamber and then exhaust chamber. There are two of these so gives it the commonly listed 2.6ltr description. Though I could have this all wrong?
I'll try
In a conventional inline 4 of say 2.0 litres you will have four combustion chamber each with an effective capacity of 500cc. Each chamber produces one expansion stroke per revolution of the engine
In a rotary with a 'triangular' rotor (piston) oscillating inside an approximately 8 shaped chamber you have three expansion strokes per revolution. So a twin rotor with a notional 650cc combustion chamber will have an effective cc of 650x3x2. Which is 3.9 litres.
It's not usually expressed in this way but the logic is sound.
In a conventional inline 4 of say 2.0 litres you will have four combustion chamber each with an effective capacity of 500cc. Each chamber produces one expansion stroke per revolution of the engine
In a rotary with a 'triangular' rotor (piston) oscillating inside an approximately 8 shaped chamber you have three expansion strokes per revolution. So a twin rotor with a notional 650cc combustion chamber will have an effective cc of 650x3x2. Which is 3.9 litres.
It's not usually expressed in this way but the logic is sound.
I had a hi power rx8 in 2006, I believe it's because inside each chamber there are 3 separate chambers (inlet,compression,exhaust) as opposed to just one chamber on a conventional 4 stroke engine.
Instead of just measuring one of the chambers some people calculate the capacity by measuring all 3.
They then times this figure by 2 or 3 depending how many rotors the engine has, the same as you would by multiplying a normal engines combustion chamber capacity by the number if cylinders in the engine.
Rob
Instead of just measuring one of the chambers some people calculate the capacity by measuring all 3.
They then times this figure by 2 or 3 depending how many rotors the engine has, the same as you would by multiplying a normal engines combustion chamber capacity by the number if cylinders in the engine.
Rob