Higher Idle when cold...

On many fuel injected cars when you first start them up and its cold the RPMs hover around 1500 rpm to heat up the Catalytic Converter, then gently drop down to normal idle when they have warmed up, is this going to be added as it will increase the realism

 

AFAIK that only happens with electronic throttle cars. But yes, it would be a nice feature.

 

it does happen in colder climate. especially now in the winter my cars idle will sit at about 1200 compared to 800 when its warm.
but since beamng doesnt have any winter maps this feature wont be needed for now imo.

 

My dads ford laser does it (i think the model is KJ) and that is pre 2000

 

But is it electronic throttle? wire? carbed? mech fuel injected? electronic injected?

 

I imagine it would be like most 90's econocars with a wire from the pedal that controls the throttle body butterfly and uses fuel injectors for the fuel input. The ECU would separately control fuel flow and but air intake should stay the same.

 

Then the ECU is forcing the injectors to change the mix to increase RPM? that doesn't sound like a great idea.

 

Im fairly sure it has something to do getting the oil to circulate the quicker or to warm it up faster.
Just asked my dad and he says it is the automatic choke to make it warm up faster from a cold start. That should be the only reason an injected car should idle fast.

 

my '86 Silivia does it too. it has electronic injection but no electronic throttle. its a automatic choke.

 

some cars have a seperate path for air to go that is restricted by the ECU, bypass valves or Idle Air Control valves, that the ECU controls through motors etc. but the big throttle is manual. Found in some Google Textbook lol.. Electronic throttles (most new cars) just have the main throttle open by around 10% to allow the car to idle effectively.
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controls air through a bypass valve, look at my post above

 

Huh. First time ive ever seen this stuff.

 

90s Fords use IAC (Idle air control valve) to high idle when cold.

These are EECV controlled

http://web.archive.org/web/20131229171848/http://oldfuelinjection.com/?p=39

What's funny is when they used to get stuck, they used to high idle all the time lol.

 

Rich mix under cold start is normal. What did ya think a choke did, it was a rich setting. It's also why flooding a cold engine was a thing, rich mix

 

I'd say most cars with any sort of electronically controlled engine would do this. The throttle isn't even touched, as above said, it's likely an ECM controlled idle control valve.