On 28/02/2020 12:22, Tim+ wrote:
Dave Plowman (News) wrote:
In article
,
Tim+ wrote:

This bit about diesels being so efficient that they are slow to heat up a
car has got to be nonsense.

Fact remains that on comparative sizes, a diesel is generally slower for
the heater to get going than a petrol.


I think were generally agreed on that but its not solely down to
efficiency (although Ill accept TNPs point about heat production at
idle), its largely down to the size of the heat sink and emission control
mechanisms that prioritise getting an engine up to working temperature
quickly over cabin heating. This is why some diesels have auxiliary diesel
fuelled heating systems.

So as to emit far more CO2....
Tim



--
"Anyone who believes that the laws of physics are mere social
conventions is invited to try transgressing those conventions from the
windows of my apartment. (I live on the twenty-first floor.) "

Alan Sokal