Nomenclature Was: Audi in London
John Cody Forbes
cody at 5000tq.com
Thu Feb 5 11:56:21 PST 2009
Tihol Tiholov wrote:
> Somewhat versed in German.
> Kompressor would be the word you seek. It refers to belt-driven
> supercharger, at least in MB speak, been so for many decades.
> "Abgasturbolader" can mean only what we call turbo, Abgas means
> exhaust or literally "off gas"; Lader=charger. Like G-Lader in some
> VW from late 80's, early 90's?
> "Turbolader" doesn't specify how it is driven, so semantically it
> could be used for any type of supercharger but practically it's the
> same as Abgasturbolader. All chargers have some form of a turbine
> after all. Maybe what we call turbo took over the name because of
> it's 2 turbines?
Actually a turbocharger has only one turbine and on the other end is a
compressor. A turbine by definition is an engine that extracts energy from a
fluid flow. A roots and a centrifugal supercharger have no form of turbine
at all, actually a turbocharger is the only supercharger that has one.
The term supercharger is the parent of turbocharger, roots-type, sliding
vane, scroll (G-lader), and centrifugal (commonly Vortec) type (among
others). All of the above can rightly be called a supercharger as can any
device that compresses air for induction into an internal combustion engine.
The translation is in simmilar fashion. An 'abgasturbolader' (usually
shortened to turbolader), 'spirallader' (G-Lader), 'drehkolbenlader'
(roots), are all types of 'motoraufladung'. One difference is that all types
of mechanically driven superchargers are categorised as 'kompressoren' and
also sometimes refered to as 'mechanische lader'.
-Cody Forbes
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