Electric hybrid powertrain regeneration efficiency improvement
US9534544B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 28, 2014 |
| Grant date | Jan 3, 2017 |
| Priority date | — |
| Expiry date | Nov 2, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method and system for increasing regenerative energy available during deceleration by reducing engine pumping losses. The method includes a controller that reduces fuel delivery to the engine and closes an engine throttle during deceleration. The controller identifies the maximum kinetic energy available during deceleration and opens an exhaust gas recirculation (EGR) valve and engine throttle as necessary to reduce a vacuum in an engine intake manifold, thus minimizing engine pumping losses and increasing regenerative energy available during deceleration while ensuring that a catalyst temperature is above a catalyst temperature threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.