Patent ID: 8511066
Filing Date: 2013-08-20
Classification: F01D,F01N,F02B,F02C,Y02T

Abstract:
1. A multi-stage turbocharging system comprising: a high pressure (HP) turbine ( E-HP exhaust piping adapted for fluidly connecting an engine to said HP turbine inlet, HP-LP exhaust piping fluidly connecting said HP turbine outlet to said LP turbine inlet, LP-A exhaust piping fluidly connecting said LP turbine outlet to an aftertreatment device, and branched bypass piping having an inlet and first and second branches, each branch having an outlet, with the inlet being fluidly connected to the E-HP exhaust piping, with the first branch outlet being fluidly connected to the LP turbine inlet, with the second branch outlet being fluidly connected to the aftertreatment device, and with an R2S valve ( wherein said R2S valve (