Hp Rating Variance
Hp Rating Variance
(OP)
I'm doing some compression work on skids that include two different Ford engines.
The first one is a Compressco "Gas Jack" that started with a Ford 460 cu in V-8 and had one bank of cylinders converted to gas compression. When I Google "Ford 460" I get around 360 hp. Compressco calls their engine 23 hp. There is just too much difference between half of 500 hp and 23 hp.
Another skid is driven by a Ford 302 which Wikipedia calls a 220 hp engine. On the skid it is called 29 hp.
Is there a major (factor of 10) difference between the way hp is measured for vehicles and the way it is measured for industrial engines?
David
The first one is a Compressco "Gas Jack" that started with a Ford 460 cu in V-8 and had one bank of cylinders converted to gas compression. When I Google "Ford 460" I get around 360 hp. Compressco calls their engine 23 hp. There is just too much difference between half of 500 hp and 23 hp.
Another skid is driven by a Ford 302 which Wikipedia calls a 220 hp engine. On the skid it is called 29 hp.
Is there a major (factor of 10) difference between the way hp is measured for vehicles and the way it is measured for industrial engines?
David





RE: Hp Rating Variance
Hope that helps,
RE: Hp Rating Variance
Thanks
David
RE: Hp Rating Variance
Additionally, I wonder if they're being rated with some pneumatic equivalent of "hydraulic horsepower", i.e. output pressure x flow x some constant.
Mike Halloran
Pembroke Pines, FL, USA
RE: Hp Rating Variance
Yes, both engines are regulated to 1800 rpm. I don't have hp vs. rpm curves for these engines, but I'm betting that cutting the rpm that much would pretty much account for the missing hp.
When I've asked Cat about how they rate an engine for a compressor they always describe a process much like the auto makers use so I don't think it is related to gas hp developed across the compressor.
Thanks
David
RE: Hp Rating Variance