ACTUALLY... I'm not sure what you're "actually" is about. You've just further defined a turbine. A turbine uses successive rows of radial blades fastened to a central shaft in order to spin the shaft. On a turbocharger, the other end of the spinning shaft is used to increase the atmospheric pressure in the engine to produce more horsepower. Jeff
-----Original Message----- From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM]On Behalf Of Dennis Haynes Sent: Thursday, September 29, 2005 11:38 AM To: vanagon@GERRY.VANAGON.COM Subject: Re: yet another engine choice - VW "twincharger"
Actually, A turbocharger, besides usually being exhaust driven, uses vaned wheels to move a large volume of air, usually working at very high speeds. The centrifugal action of the wheel creates the flow or pressure similar to the way a centrifugal pump works. Superchargers are usually rotary screw or lobe pumps, belt driven. The major significance is that they are positive displacement pumps. Even the VW G-Ladder is a PD pump. They need to be belt driven since as a PD pump, if it is not turning, air will not flow through it. Dennis ----- Original Message ----- From: Jeffrey Schwaia <jeff@VANAGONPARTS.COM> Date: Thursday, September 29, 2005 1:57 pm Subject: Re: yet another engine choice - VW "twincharger" > Re: yet another engine choice - VW "twincharger"Right and wrong. A > turbocharger is a supercharger, however, it gets it name from the > fact that > it uses a turbine to spin the compressor. The turbine is spun via > exhaustgases. > > Cheers, > > Jeff > > -----Original Message----- > From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM]On > Behalf Of > Andrew Grebneff > Sent: Thursday, September 29, 2005 12:22 AM > To: vanagon@GERRY.VANAGON.COM > Subject: Re: yet another engine choice - VW "twincharger" > > > Turbos can be driven by exhaust (almost all), belt (Paxton) or > electricmotor (as VW was paying Mitsubishi to research in the 90s). > > > Turbos in their early days (WW2) were called turbosuperchargers. > Unfortunately, with the contraction to turbocharger, it's "outta > sight,outta mind"... take super out and soon people forget that it > IS a > supercharger. > |
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