Ray, A turbocharger has two sets of blades. The compressor blades
(which compress intake air) and the turbine blades (use exhaust pressure
to generate rotational force). The compressor side of the turbo forces
(compacts) air into the intake manifold (more than the valves and
pistons can intake) This in effect creates a pressure back against the
compressor blades which are solidly connected to the exhaust driven
turbine blades. Soon as a puff of exhaust from one cylinder passes
through and turns the tubine blades the back pressure from the above
mentioned compressor immediately slows the turbine blades until the next
puff from another cyclinder comes along and pushes the turbine blades
against and past that slow down. There is a point at which a compressor
creates such back pressure in the exhaust (reversion) that the pistons
can't push the exhaust out past and through the blades. But maybe if we
put a big flywheel on it ....
David
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