what does the orange light which a picture of an engine mean on my car?

This light is the 'Engine management light' this indicates there may be a fault (possibly with one of the engine's sensors), visit a local garage and query them about it.
they have a Diagnostics machine (this will tel the mechaninc what he/she will need to nkow and cn tell you what the problem is, maybe even quote you on a price for suggested repair.

Apprentice Mechaninc (anonymous)
April 2007

Computer has seen a problem in system and needs to be diagnosed .....try disconnecting neg battery cable for about 30 seconds and see if light comes back on after you drive it awhile ....if it does there is a problem ....

bg
February 2006

Engine mangement problem. Needs plugging into a diagnostic computer.

Terry
December 2005