Characterization of Energy Distribution and Efficiency in a Modern Heavy-Duty Diesel Engine
- Arvind Thiruvengadam - West Virginia University, USA ,
- Saroj Pradhan - West Virginia University, USA ,
- Pragalath Thiruvengadam - West Virginia University, USA ,
- Vishnu Padmanaban - West Virginia University, USA ,
- Marc Besch - West Virginia University, USA ,
- Oscar Delgado - International Council for Clean Transportation, USA ,
- Nic Lutsey - International Council for Clean Transportation, USA
Journal Article
03-13-04-0037
ISSN: 1946-3936, e-ISSN: 1946-3944
Sector:
Citation:
Thiruvengadam, A., Pradhan, S., Thiruvengadam, P., Padmanaban, V. et al., "Characterization of Energy Distribution and Efficiency in a Modern Heavy-Duty Diesel Engine," SAE Int. J. Engines 13(4):583-599, 2020, https://doi.org/10.4271/03-13-04-0037.
Language:
English
Abstract:
This study presents an assessment focused on benchmarking the energy distribution
and engine efficiency of a pre-2014, United States Environmental Protection
Agency (USEPA) 2010 emissions-compliant, heavy-duty (HD) diesel, long-haul truck
engine as a reference of baseline technology. Further, the study used the
baseline energy distribution as the baseline to factor in the efficiency gains
of various future engine technologies to evaluate the impact of future
greenhouse gas (GHG) standards on HD vehicle fuel consumption. Furthermore, the
study predicted the maximum achievable fuel consumption benefit from a future
engine technology that will employ breakthrough technologies that are not in the
near-term production pathway of engine manufacturers. The baseline energy
distribution was experimentally assessed by conducting a detailed engine
dynamometer testing of an HD diesel engine over a wide range of engine
operations. The fuel consumption prediction results for the model year (MY) 2017
and MY 2020-future (2020+) engine platforms showed reductions of 7.9% and 18.3%,
respectively, relative to baseline engine fuel consumption. The study predicts
future technologies will result in lower energy loss to exhaust, pumping work,
and the coolant circuit. The possibility of a waste heat recovery (WHR) system
shows promise of delivering a maximum of 3% improvement to the brake thermal
efficiency (BTE) for a MY 2020+ engine technology. Overall, the study sought to
provide a detailed breakdown of engine energy flows and loss mechanisms involved
that can help in model development to forecast the impact of modern technologies
on overall engine efficiency.