radiator shutters

[drott40]

why don't auto companies use automatic radiator shutters?seems like an easy way to get greater effecientcy.Any after market companies doing anything with this?

 

[Metalguy]

What's the problem with the simple water thermostats? They work fine.

 

[GregLocock]

They are available as an aftermarket item in the UK. I suppose the reason we don't use them is that the FMEA is a bit tricky - risking an engine boil-up in an effort to save a bit of fuel would not pay off, and anyway all fuel consumption testing is done at higher temperatures, so there would be no showroom benefit.

When I worked on an energy efficient vehicle (BL Technology's ECV3) I designed the flap in the cooling air duct that was used to optimise the airflow, so it has been thought about.

Cheers

Greg Locock