Induction Being Dependant on Fuel Type

[Eric.B]

Two Stokes can use valves (ie, Uniflow Scavenging) but we also have some pretty interesting technology with two stroke engines like deflection pistons, separate lubrication systems, loop scavenging etc... That are contemporaries to SOCH, DOCH, OHV, Pushrod designs.

While there are other types of 2-stroke engine designs as you mentioned, Why not implement them as valves as well? Since technically the difference between them all is different input/output valve types.

The reason why we only have 1 2-stroke valve type and not 5 or 6 is purely for simplification. And the fact that most 2-stroke engines designs were not used in vehicles.

- at the moment two strokes have a heavy disadvantage in power compared to four stroke engines - you're lucky to get 1/2 the horse power for similar engines between two stroke and a T Head
- Realistically you get about the same Horse Power - DKW's 900cc engine in 1953 outputted 34 Horses compared to the Riley Elf in 1961 that had a 850cc engine that outputted the same 34 Horses

Yes, 2-stroke currently has a power disadvantage due to the fact with the current game mechanisms would cause 2-strokes to be extremely overpowered otherwise. We don't have emissions or noise standards in the game. That being said, 4 stroke is more efficient in the upper HP range, and 2-Stroke on the lower. Sadly I can't just gimp 2-stroke in the upper end and leave the lower end fine. Nor could I leave 2-stroke at equal power rating as 4-stroke otherwise every engine in the game would be 2-stroke.

None the less, this is changeable in the valve settings. just bounce the power ratings up.

To get us to having useful two stokes we would need to have the separate forms of two stroke engines (ie, Uniflow, loop scavenging, Deflection Piston) which would be possible if valve type was set by the fuel type.

So added them to the valves? Uniflow is just 3 valves, 2 in the bottom exhaust at the top. You can use it with any type of fuel. 2-Stroke Autogas, 2-Stroke Natural Gas, 2-Stroke e85, 2-stroke blah blah blah. 2-Stroke isn't a fuel type. It's a cycle. Sure the cycle requires you to add oil to the fuel. But that doesn't change the fact that gasoline is gasoline.

By putting 2-stroke in valves, where it is, you 1) are technically correct since 4-stroke and 2-stroke engines have different port/valve systems. 2) Only have 3 or 4 selections for different 2 strokes engine designs rather than n*2 selections for fuel (around 16.) 3) You'd still have to implement the different 2-stroke valve systems anyway if you put different types of 2-stroke fuel. None of the 4-stroke valve systems such as OHV or DOHC would be in that selection...