Improving Brake Thermal Efficiency Using High-Efficiency Turbo and EGR Pump While Meeting 2027 Emissions
- Delivery
- Provide download link
- Format
- Price
- Non-members (tax incl.):¥6,600 Members (tax incl.):¥5,280
- Paper/Info type
- SAE Paper
No.2021-01-1154
- Pages
- 1-14(Total 14 p)
- Date of publication
- Sep 2021
- Publisher
- SAE International
- Language
- English
- Event
- SAE Powertrains, Fuels & Lubricants Digital Summit
Detailed Information
Author(E) | 1) Daniel Christopher Bitsis, 2) Andrew Matheaus, 3) Justin Hopkins, 4) James E. McCarthy, Jr. |
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Affiliation(E) | 1) Southwest Research Institute, 2) Southwest Research Institute, 3) Eaton, 4) Eaton |
Abstract(E) | Commercial vehicles are moving in the direction of improving brake thermal efficiency while also meeting future diesel emission requirements. This study is focused on improving efficiency by replacing the variable geometry turbine (VGT) turbocharger with a high-efficiency fixed geometry turbocharger. Engine-out (EO) NOX emissions are maintained by providing the required amount of exhaust gas recirculation (EGR) using a 48 V motor driven EGR pump downstream of the EGR cooler. This engine is also equipped with cylinder deactivation (CDA) hardware such that the engine can be optimized at low load operation using the combination of the high-efficiency turbocharger, EGR pump and CDA. The exhaust aftertreatment system has been shown to meet 2027 emissions using the baseline engine hardware as it includes a close coupled light-off SCR followed by a downstream SCR system. A parametric analysis for improving engine efficiency is provided using the high-efficiency turbocharger, EGR pump and CDA over the baseline configuration while meeting 2027 emissions. |