Well, I'm shocked.

How about the latent heat of evaporation of the petrol, nobody has
talked about that[1]. Also, it isn't a simple venturi, there is also the
factor of turbulence and the subsequent effect on the flow. Besides...
throttle bodies and venturi are so 1990s. The new thing is variable
inlet valve lift to vary engine petrol speed.

[1] I know it's an extreme case, but look at how a fridge works.

 

[1]

[1] A smile to humour the old guy.

 

Yeah they did, somewhere in this thread. GC IIRC. Except I thought it
mainly atomised, rather than evaporated (also mentioned).

 

True, it's mainly atomised but small droplet size means greater surface
area vs droplet internal volume. This in turn means more evaporation
takes place based on the greater surface area. Petrol isn't made up from
only one hydrocarbon, it's got several different ones in. Some of them
are of a much higher volatility (more so in the winter). Coupled with
the slightly lowered boiling point due to a pressure drop, and the lower
inlet temperatures, this could be enough to evaporate enough of the
petrol to cause air moisture to freeze. This is just a hypothesis based
on what I can remember without looking at my books too closely[1].

[1] Coz I'd rather be applying for jobs than fucking about on ukrm
related stuff.

 

Wash your mouth out.

 

$:

Fucking graduate know it alls. We're all the same...

 

<cough>

 

This evening I've tried that with tea, pizza, apple sponge.

 

Lol. Graduate with honours if you please.. ... and yes...

 

Pig flu?