Patent ID: 9464582
Filing Date: 2016-10-11
CPC Classification: F01N,F02B,F02D,F02M,Y02T

Claim Text:
1. A system, comprising: a high pressure turbine; a low pressure turbine; a first passage for routing exhaust from a first subset of cylinders on a first cylinder bank, bypassing the high pressure turbine, to upstream of the low pressure turbine in an exhaust passage of an engine; and a second passage for routing exhaust from a second, different subset of cylinders on a second cylinder bank to upstream of the high pressure turbine, wherein only exhaust from the second subset of cylinders is routed to upstream of the high pressure turbine, wherein exhaust exiting the high pressure turbine flows through the exhaust passage to the low pressure turbine, the exhaust passage positioned under the first passage and the second passage in a lateral direction, and wherein exhaust from the first subset of cylinders is routed directly to downstream of an outlet of the high pressure turbine without passing through a bypass passage.