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Improving Brake Thermal Efficiency Using High Efficiency Turbo and EGR Pump While Meeting 2027 Emissions Southwest Research Institute
- Format:
- Book
- Conference/Event
- Author/Creator:
- Bitsis, Daniel Christopher, author.
- Conference Name:
- SAE Powertrains, Fuels & Lubricants Digital Summit (2021-09-28 : Live Online, Pennsylvania, United States)
- Language:
- English
- Physical Description:
- 1 online resource cm
- Place of Publication:
- Warrendale, PA SAE International 2021
- Summary:
- 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 turbocharger with a high efficiency fixed geometry turbocharger. Engine out NOx emissions are maintained by providing the required amount of exhaust gas recirculation (EGR) using a 48V 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 previously been shown to meet 2027 emissions using the baseline engine hardware as it includes 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. A detailed analysis of exhaust pulse energy is provided along with various layouts for high pressure loop EGR
- Notes:
- Vendor supplied data
- Publisher Number:
- 2021-01-1154
- Access Restriction:
- Restricted for use by site license
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