Device for increasing the braking power of a multi-cylinder internal combustion engine of a vehicle during an engine braking operation
US7523736B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2006 |
| Grant date | Apr 28, 2009 |
| Priority date | — |
| Expiry date | Feb 19, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A device for increasing the braking power of a multi-cylinder internal combustion engine of a vehicle during engine braking operation includes a turbo supercharger and an exhaust gas turbine for each stage thereof. A respective bypass line branches off from a region of two exhaust gas header pipes that can be blocked by throttle valves. Each bypass line communicates with a nozzle bore in a turbine wall. During an engine braking operation, two partial exhaust gas streams are branched off by the bypass lines from exhaust gas retained in blocked header pipes and strike turbine wheel blades at high pressure and high speed, whereupon the turbo supercharger is driven in an accelerated manner and compressed air is supplied to combustion chambers of the engine and is there effective to increase braking power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.