Possible to reproduce turbo engines?

[utopian201]

I have only started playing with the turbochargers. Is it currently possible to replicate real life turbocharged engines in the current designer? I'm having trouble replicating something similar to this


That is the chart for a MP4-12C (twin turbo 3.8L V8). I can't seem to get the torque to increase gradually while keeping it flat; I can only get it to jump up which hurts tameness.

Is it currently possible to replicate turbo engines, or will that part be tweaked after the full game has been released?

[Pleb]

The turbo calculations are high up the list for a big overhaul, as even modern turbos are really laggy in-game. So it would be extremely difficult to replicate modern turbo engines with the current calculations.

[Weasel]

I think it will be possible when we have VTG or stage turbocharging with 2 Turbos in the game.

With VTG you are able to adjust the inlet cross section and you avoid the turbo-hole in lower revs. It's the same thing with the stage turbocharging, but you need here 2 turbos (a smaller one for lower revs and a bigger one for higher revs). And so you get a flat / wide torque curve, which increses earlier.

[utopian201]

I think it will be possible when we have VTG or stage turbocharging with 2 Turbos in the game.

With VTG you are able to adjust the inlet cross section and you avoid the turbo-hole in lower revs. It's the same thing with the stage turbocharging, but you need here 2 turbos (a smaller one for lower revs and a bigger one for higher revs). And so you get a flat / wide torque curve, which increses earlier.

Hmm, well the thing is, when a V engine is used, it -is- called a twin turbo. It just I assume they are in a parallel setup instead of sequential hence the lag.

[Weasel]

Twin and Bi-Turbo is the same. It just mean, that, there are 2 Turbos. The naming depends on the respective OEM. A V-engine uses 2 Turbos, which have the same turbine size. A stage turbocharging V-engine has 4 Turbos. On each side a small one and a bigger one. I've never seen such an engine. If someone knows one, show me please, i'm intersted in that.

With the current normal turbo characteristic ingame (turbo hole... turbo hole... turbo hole... pressure... BAAAAMMMM!!!! TurboBoost ) it is not possible to get a flat torque curve, respectevly i couldn't generate one.

[Cheeseman]

Like Pleb said, turbocharging needs to be redone. I am not sure when this will be done, but considering that the devs want something good to launch the game with I would expect it to be coming in the next update ready for Steam

[nialloftara]

Twin and Bi-Turbo is the same. It just mean, that, there are 2 Turbos. The naming depends on the respective OEM. A V-engine uses 2 Turbos, which have the same turbine size. A stage turbocharging V-engine has 4 Turbos. On each side a small one and a bigger one. I've never seen such an engine. If someone knows one, show me please, i'm intersted in that.

With the current normal turbo characteristic ingame (turbo hole... turbo hole... turbo hole... pressure... BAAAAMMMM!!!! TurboBoost ) it is not possible to get a flat torque curve, respectevly i couldn't generate one.

V engines can run a single turbo or a single pair of sequential turbos, it involves a slightly more complex manifold that puts the turbo(s) in the valley between the heads. This might be added to the game, though I can't remember atm.

[Slim Jim]

Like Pleb said, turbocharging needs to be redone. I am not sure when this will be done, but considering that the devs want something good to launch the game with I would expect it to be coming in the next update ready for Steam

According to the FAQ, they will not be working on forced induction until after the Tycoon demo is released, or when the game is basically "feature complete".

[vmo]

Twin and Bi-Turbo is the same. It just mean, that, there are 2 Turbos. The naming depends on the respective OEM. A V-engine uses 2 Turbos, which have the same turbine size. A stage turbocharging V-engine has 4 Turbos. On each side a small one and a bigger one. I've never seen such an engine. If someone knows one, show me please, i'm intersted in that.

With the current normal turbo characteristic ingame (turbo hole... turbo hole... turbo hole... pressure... BAAAAMMMM!!!! TurboBoost ) it is not possible to get a flat torque curve, respectevly i couldn't generate one.

Twin and biturbo isn't the same (but sequential twinturbo and biturbo yes): Basically, you have 1 smaller turbo for lower RPM range, and a larger turbo for higher range. It helps greatly reduce turbo lag due to the smaller turbo can produce boost much earlier than a super single or twin turbo setup can do. At lower RPM, the smaller turbo spools and produces boost - then when you reach a preset RPM or boost level, a staging valve opens and directs air to turbo 2(large one) and it now produces the boost for the engine. Usually, stage one turbo is turned off, or its boost is sent into the compressor intake of the stage 2 turbo to achieve a higher output pressure.
Do not confuse Biturbo / Sequential Twin Turbo with "Twin Turbo".

Twin turbo is having two EQUAL size turbo's. Each runs off its own cylinder bank in V or H type (boxer) engines, or off of a turbo manifoldon inline type engines. Both turbos share the load equally in producing boost air. (Like a dual core processor in your PC - both run at same speed, sharing the load equally) So, turbo lag still effects this type of setup, as both turbos will spool at the same time."

[utopian201]

Twin turbo is having two EQUAL size turbo's. Each runs off its own cylinder bank in V or H type (boxer) engines, or off of a turbo manifoldon inline type engines. Both turbos share the load equally in producing boost air. (Like a dual core processor in your PC - both run at same speed, sharing the load equally) So, turbo lag still effects this type of setup, as both turbos will spool at the same time."

What you've described is a parallel turbo setup. There is turbo lag, but because the turbos only need to feed half the banks, they can be smaller and can spool up faster. But because they need to work the entire rpm range, I would expect it to have more turbo lag than a sequential turbo setup, as well as lower maximum boost.

On the upside, I'd expect them to be less complex as there is no switch over point.