Isotta Fraschini Asso Caccia
| {{Infobox Aircraft Begin
| name=Asso Caccia | image=File:Asso Caccia.jpg | caption=Side view of an Asso Caccia }}{{Infobox Aircraft Engine |type=V-12 air-cooled aircraft piston engine |manufacturer=Isotta Fraschini, Milan |designer= |national origin=Italy |first run= |major applications=Fiat CR.20 |produced= |number built= |program cost= |unit cost= |developed from= |variants with their own articles= }} |
The Isotta Fraschini Asso Caccia, a.k.a. Isotta Fraschini Asso-450 Caccia,{{cite book |title=Jane's All the World's Aircraft 1928 |editor1-last=Grey |editor1-first=C.G. |year=1928 |publisher=Sampson Low, Marston & company, ltd |location=London |pages=48d-49d}} was an air-cooled, supercharged V12 piston aero engine produced in the late 1920s and early 1930s by Italian manufacturer Isotta Fraschini.
Design
The Asso Caccia had a V-cylinder configuration, with cylinders made of carbon steel, equipped with cooling fins, mounted separately from each other, to which a single head per cylinder was connected. Above them, two light alloy carters, one per group of cylinders, had the function of connecting the cylinder heads and the intake ducts as well as containing, closed by a cover, the tappets and the distribution members.
The crankshaft, made of special steel, was supported by a series of 8 bearings, with the insertion in the rear position between the last two of a double bearing and thrust ball bearing, which had the task of supporting the effort of the propeller whether it is mounted in a pulling or pushing configuration.{{cite book |last1=Cei |first1=Leoniero |last2=Fiore |first2=Amedeo |title=Il motorista d'aviazione |date=1934 |publisher=Editore Ulrico Hoepli |location=Milano |language=Italian}}
Applications
Specifications
{{pistonspecs|
|ref=Jane's All the World's Aircraft 1928
|type=V-12 air-cooled 60° direct-drive piston engine
|bore={{cvt|125|mm}}
|stroke={{cvt|140|mm}}
|displacement={{cvt|20.610|L|cuin}}
|length={{cvt|1646|mm}}
|diameter=
|width={{cvt|700|mm}}
|height={{cvt|840|mm}}
|weight={{cvt|315|kg}} dry
|valvetrain=4x overhead valves per cylinder driven by an overhead camshafts and rockers
|supercharger=
|turbocharger=
|fuelsystem=4x Zenith carburetors
|fueltype=aviation gasoline
|oilsystem=pressure
|coolingsystem=air
|power=
::::{{cvt|450|hp}} (normal) at 2,250 rpm
::::{{cvt|500|hp}} (maximum) at 2,600 rpm
|specpower=
|compression=5.7:1
|fuelcon=
|specfuelcon={{cvt|0.506|lb/hph|kg/kWh}}
|oilcon=
|power/weight=
|designer=
|reduction_gear=direct-drive
|general_other=
|components_other=
|performance_other=
}}
See also
{{aircontent
|see also=
|related=
|similar aircraft=
|lists=
|similar engines=
}}
References
{{Commons category}}
{{Reflist}}
{{Isotta Fraschini aeroengines}}