Patent ID: 11926422
Assignee: HAMILTON SUNDSTRAND CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 0:
1. An environmental control system of a vehicle comprising:
a first compression device including a compressor, a first turbine, a power turbine, and a third turbine operably coupled by a shaft, wherein the first turbine and the third medium configured to receive a first medium, the compressor is configured to receive a second medium, and the power turbine is configured to receive a third medium, the first medium, the second medium, and the third medium being distinct; and
a second compression device, separated from the first compression device, the second compression device including a second turbine;
a bypass line extending from directly upstream of an inlet of the first turbine to an inlet of the second turbine;
wherein the environmental control system is operable in a plurality of modes including a first mode and a second mode, in the first mode, the second medium is provided to the compressor and the second turbine sequentially and in the second mode, the second medium bypasses the second turbine, wherein in both the first mode and the second mode, only the second medium is provided to an outlet of the environmental control system;
wherein in at least one mode of the plurality of modes, the first medium is configured to bypass the first turbine via the bypass line.