Duocylinder Supercombustion II

This idea combines the Scuderi Cycle, Crower Cycle, and Miller Cycle to hopefully create a very efficient engine. The concept behind this is using waste heat to boil a liquid fuel so that when it comes into contact with oxygen it will combust.

The Scuderi Cycle works by having two cylinders for different strokes. The first one sucks in and compresses the air, the second one combusts it. The compression cylinder can be larger than the combustion cylinder for a supercharging effect (more air into a smaller space), and is always a few degrees behind the combustion cylinder so that it can fire after TDC. But my idea uses this cycle differently.

Picture a 3L flat-6. The 3000ccs is the measure of the combustion cylinders. Instead of just having a combustion, exhaust cycle, it goes combustion, exhaust, fuel injection/expansion, compression (with the fuel injection and expansion very similar to the Crower Cycle). Now picture a 1.5L flat-6 (half the displacement) on top of the 3L one, driven by gears so that it rotates at 1/2 the speed of the 3L. When warmed up, the combustion cylinders at the bottom go through their combustion, exhaust, fuel expansion, compression cycle like normal. A few degrees after the fuel is compressed after expansion, the crossover valves open and the air from the compression cylinders is forced in. Once the air hits the boiled fuel it combusts. Now the reason the compressor cylinders are rotating half the speed of the combustion ones is that the combustion ones go through twice the cycles, so to compensate the compression ones must rotate half the speed (otherwise they would go through two compression cycles for only 1 required from the combustion cylinders).

The reason the compression cylinders are smaller than the combustion ones is so that when the air hits the boiled fuel, combustion won't overpower them (F.R.O.G. if you're reading this, know that I took your advice from the first version of this). But this is also awefully convenient, since it means that a supercharger can compensate for their smaller size by forcing in twice the air. And what's more, they will do it more efficiently than the pistons could anyways. And on top of that, at low RPMS valve timing allows the Miller Cycle to occur so that even more efficiency is squeezed out.

So now picture the roots-type supercharger above all the cylinders, belt driven from the combustion cylinders. Only the belt is connected to a CVT to control exactly how much boost is given to the compression cylinders. The reason for this is that the combustion cylinders are connected to two very large turbochargers (with variable vane technology to prevent excessive backpressure) that eventually take over for the supercharger at high RPMs, and allow the engine to work much less hard (since they're using some waste energy from the exhaust rather than energy sapped directly from the engine, and centrifugal pumps are more efficient at high RPMs anyways). The CVT factors in the data on the pressure created by the turbochargers and subtracts that from the pressure needed to create a ratio so that the supercharger makes up the difference. At low RPMs the difference would be almost 100%, at high RPMs the difference would be close to 0%, but there's still always that middle ground.

Now the benefit to all of this is that this engine would burn very cleanly and could use ANY liquid fuel. You want to fill up with ethanol, go for it. You happen to be low on fuel and near a gas station that only has gasoline, fill 'er up. You have some left over heating oil, hey why not? The reason is because the heat from the pistons is enough to boil any liquid. And once in its gasseous state, any liquid fuel will combust when in contact with compressed air. And besides that, it will do so extremely efficiently. Picture using biodiesel (vegetable oil) as a fuel, a fuel made simply by pressing on vegetables. Never mind extremely high required compression ratios or bulky and oversized parts that make a very slow revving and boring motor, if used in this engine it could be light and high revving. Not to mention the fact that it wouldn't smell nearly as bad from partial incomplete combustion, because when boiled, fuels are as atomized and ready to combust as ever.