Patent · US Active

Hybrid electric hydrogen fuel cell engine

US11724815B2 · kind B2 · utility

3Cited by

5References

20Claims

0Family size

Assignee

The Boeing Company · US

Inventors

Steve G. Mackin · Bellevue, US
Eric B. Gilbert · Shoreline, US
Russell H. Higgins · Everett, US

Key dates

Filing date	Jan 13, 2022
Grant date	Aug 15, 2023
Priority date	—
Expiry date	Jan 13, 2042

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T90/40
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A hybrid engine including features to meet aircraft thrust, passenger airflow, and fuel cell requirements. The engine includes a combustor burning the same fuel as the fuel cell. The engine has electric motors to utilize the power output of the fuel cell. The engine shafts have sprags to allow motors to drive the compressors and over run the turbines. The engine has variable flowpath geometry to bypass the combustor.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.