OPOC and Elsbett - ideal internal combustion engine?

What would be the ideal engine and well suited for the future electric drive hybrids? I think it is diesel. I think it is two stroke. I think it can run on vegetable oil (among others).

So then, how about combining the OPOC engine with the Elsbett engine?

2-stoke diesels need to have (slightly) compressed air for scavenging. When starting, a regular turbo can not supply this, as there is no exhaust gasses to power it up at this point. The turbo needs to have an assistant high speed electric motor to spin it up to produce just enough compression for starting. Or perhaps a mechanical belt driven twin-screw compressor could supply enouh pressurized air if your starter (with the big hybrid batteries) can spin the engine fast enough. Or, you could just use a small tank of pressurised air, with a small electric compressor.

Diesel advantages

• more fuel efficient

• generally longer lasting (due to heavier build and diesel oils lubricative properties)

• does not necessarily need electricity to run (if mechanical pump and injection)

- can run on various fuels (at least with some modifications)

Diesel disadvantages

- heavier (for given power)

- more expensive (at least 4-stroke)

- pretty much has to be super- or turbocharged

2-stroke advantages

• small and light (for given power) compared to 4-stroke

• simpler and less parts (no valves or valvetrain ie. piston ported)

• more fuel efficient

(due to smaller displacement and less mechanical drag)

2-stroke disadvantages

- needs compressed air for scavenging (also when starting up)

Future fuels will be synthetic diesels and (to some extent) straight vegetable oil. The synthetic diesels will be produced with the Fischer- Tropsh process (FTP) and thermal depolymerization process (TDP) using various feedstocks like biomass (agriculturel waste, wood etc:), peat, coal, waste (plastics, tyres etc.).

Some search words

Fischer-Tropsch thermal depolymerization (and or thermal conversion) OPOC-engine Elsbett engine

Any insight on whether it is possible to successfully (and economically) combine these two engine technologies (OPOC nad Elsbett) to produce the ideal engine is appriciated.