Talk:Rotary vane pump

Perhaps explain more what the oil is used for?

Rotary Pump

I think that this article is not about rotary pump per se, but only a type of a rotary pump. Can someone please make a "real" rotary pump article? Thanks E Wing (talk) 18:37, 28 July 2008 (UTC)[reply]

vane pump inventor

As many readers of this paper probably know, vane pumps derive from an italian engineer's works. As a matter of fact he imagined, designed, engineered and experimented a vane pump as early as in 1588. His name is Agostino Ramelli.

It would be fair to mention his invention and his name in this article, although in these old time he did not patent what he had created. 193.248.110.97 (talk) 15:24, 29 August 2010 (UTC)Bernard HUET[reply]

Also, John M. Cooper of Vermont patented a sliding vane pump for use on fire engines in 1827. I am having trouble finding the patent information but if I do I will certainly correct this article. Jim Derby (talk) 20:35, 25 May 2013 (UTC)[reply]

Why is there no Internal Combustion vane motor?

This is one of the most asked question: Answer is this (Removed ??? from the Vane page Oct. 25, 2012):

Geometric feature: Since the cylindrical (or oval) stator has a radius of curvature greater than the rotor, the two surfaces (rotor - stator) can not reach a close fit at top dead center (TDC), as the piston head does in its cylinder. This limitation is minor in the case of incompressible fluids (involving a neutral recirculation of a small volume of liquid), but it results in a low compression ratio with compressible gases which limits the effectiveness of combustion vane motors attempts. Note that the Quasiturbine is a limit case with imperceptible vanes extension, where the surfaces of both the rotor and stator fit exactly against one another to produce a high compression ratio.

This article is about pumps, not motors. Also see the Wankel engine, an internal combustion engine with rotary motion sealed by vanes. Unlike the quasiturbine, it has few moving parts and it also works. Andy Dingley (talk) 15:30, 25 October 2012 (UTC)[reply]

Piston and vane are both pump and motor. If vane is no (good) motor, it is because it intrinsec geometric deficiency that very few know about. This bridge info is most fundamental and valuable to readers. — Preceding unsigned comment added by 96.22.59.92 (talk) 16:20, 25 October 2012 (UTC)[reply]

Vacuum pressure

Does it get down to: pressures as low as 10⁻⁶ mbar (0.0001 Pa).

or : reach pressures well below 10⁻⁶ bar.

Superchargers?

Can someone name to me the exact model of car, or even racing car, or truck, or other vehicle that used a sliding-vane pump as a supercharger? I have never heard of such a thing. If it has been done, my belief is that it was purely experimental and small scale. Perhaps that sentence is left over from when the article was about rotary pumps in general? Rotary pups are indeed used for superchargers, and I've seen gear-pumps and the like used on oil pumps. I won't argue with the claim that sliding-vane pumps are widely used for air-conditioning, power-steering and transmission fluid pumps, because I don't know much about it. I would find it unlikely though; why would you use a pump with moving parts to wear out and break when there are other types that would work just as well. I do stand by my claim that no production automoblie has ever used a sliding-vne supercharger, nor do I believe that one can buy such a thing. Superchargers are centrifugal, Roots or screw type compressors for the most part. There was one unique attempt at using an axial compressor in the 1930s, I think.

Idumea47b (talk) 08:02, 3 July 2018 (UTC)[reply]

Pretty common, with the Shorrocks supercharger of the 1950s-1960. But this was a UK design, not US, so WP overlooks it. Pre-war there were many sliding vane superchargers - the Powerplus being just one. Andy Dingley (talk) 10:34, 3 July 2018 (UTC)[reply]