EGR pump locking mechanism and method to lock EGR pump rotating group during engine braking
US12123380B2 · kind B2 · utility
0Cited by
0References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2021 |
| Grant date | Oct 22, 2024 |
| Priority date | — |
| Expiry date | Nov 4, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C29/005
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An EGR pump system includes an EGR pump assembly including an electric motor assembly coupled to a transmission assembly. A roots device is coupled to the electric motor through the transmission assembly. The roots device includes a housing defining an internal volume and rotors are disposed in the internal volume and connected to the transmission assembly. An EGR locking mechanism is attached to the EGR pump assembly. The EGR locking mechanism is selectively connected to the transmission assembly locking the transmission assembly and preventing rotation of the rotors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.