Hybrid diesel electric powertrains and emissions testing thereof
US9389145B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 20, 2013 |
| Grant date | Jul 12, 2016 |
| Priority date | — |
| Expiry date | Dec 28, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M15/102
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Diesel electric hybrid powertrains and methods of operating and testing such powertrains are disclosed. Certain exemplary embodiments comprise test and certification methods in which a controller operates a diesel engine alone, an integrated motor/generator alone, or both the diesel engine and the motor/generator to provide brake torque at a common output shaft according to predetermined duty cycle criteria. Emissions are measured based upon criteria accounting for the effects of regenerative braking, engine shut off, and other operational modes unique to hybrid powertrains. Further exemplary embodiments comprise hybrid powertrain systems and methods of operating the same meeting performance and emissions requirements including respective limits on NOx, hydrocarbon, particulate matter, CO, and CO2 without reliance conventional emissions reduction devices or techniques.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.