Editing Horsepower (section)

==={{anchor|ECE R24}}Economic Commission for Europe R24===
ECE R24 is a [[UNECE Regulations|UN standard]] for the approval of compression ignition engine emissions, installation and measurement of engine power.<ref>{{cite web|url=http://www.unece.org/fileadmin/DAM/trans/main/wp29/wp29regs/r024r2e.pdf|title=Text of the 1958 Agreement, ECE Regulation 24, Revision 2, Annex 10|website=www.unece.org}}</ref> It is similar to DIN 70020 standard, but with different requirements for connecting an engine's fan during testing causing it to absorb less power from the engine.<ref>{{cite web |first=Jim |last=Breen |url=http://www.farmersjournal.ie/2003/0322/farmmanagement/machinery/tractor.htm |archive-url=https://archive.today/20030406025121/http://www.farmersjournal.ie/2003/0322/farmmanagement/machinery/tractor.htm |url-status=dead |archive-date=2003-04-06 |title= Tractor and machine comparison: what's the 'true' measure |publisher=Irish Farmers Journal |date=2003-03-22 }}</ref>