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SR22T
Turbocharger
Description of operation;
The TSIO550K incorporates two turbochargers controlled
by a single waste-gate. Waste-gate position is determined
by a “Sloped” controller.
The left and right exhaust manifolds are connected by a
crossover pipe which equalizes exhaust gas pressure in
the two manifolds which are directly connected to the
turbochargers. The crossover pipe has an exhaust exit
which contains the waste-gate, thus controlling exhaust
gas pressure in the manifolds. Through this architecture,
exhaust gas pressure is both equal and controlled in the
manifolds.
The hydraulically operated waste-gate position is
determined by the sloped controller which senses and
responds to a pre-set absolute boost value of 36.5” as
well as boost at power settings other than full.