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Diesel Engine Cylinder Deactivation for Improved System Performance over Transient Real-World Drive Cycles
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 03, 2018 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Effective control of exhaust emissions from modern diesel engines requires the use of aftertreatment systems. Elevated aftertreatment component temperatures are required for engine-out emissions reductions to acceptable tailpipe limits. Maintaining elevated aftertreatment components temperatures is particularly problematic during prolonged low speed, low load operation of the engine (i.e. idle, creep, stop and go traffic), on account of low engine-outlet temperatures during these operating conditions. Conventional techniques to achieve elevated aftertreatment component temperatures include delayed fuel injections and over-squeezing the turbocharger, both of which result in a significant fuel consumption penalty. Cylinder deactivation (CDA) has been studied as a candidate strategy to maintain favorable aftertreatment temperatures, in a fuel efficient manner, via reduced airflow through the engine. This work focuses on prediction and demonstration of fuel economy benefits of CDA when implemented at idle and low load portions of the emission certification cycles, such as the heavy duty federal test procedure (HD-FTP), and other real-world drive cycles, including the Orange County bus and port drayage creep cycles. A 3.4% benefit in fuel economy has been demonstrated over the HD-FTP, while maintaining tailpipe-out NOx emissions. Greater improvements in fuel economy have been predicted over the real world cycles, with a 5.6% reduction predicted over the Orange County bus cycle and 35% reduction predicted over the port drayage creep cycle.
- Mrunal Joshi - Purdue University-West Lafayette
- Dheeraj Gosala - Purdue University-West Lafayette
- Cody Allen - Purdue University-West Lafayette
- Sirish Srinivasan - Indian Institute of Technology
- Aswin Ramesh - Purdue University-West Lafayette
- Matthew VanVoorhis - Purdue University-West Lafayette
- Alexander Taylor - Purdue University-West Lafayette
- Kalen Vos - Purdue University-West Lafayette
- Gregory Shaver - Purdue University-West Lafayette
- James McCarthy Jr - Eaton Corp.
- Lisa Farrell - Cummins Inc.
- Edward D. Koeberlein - Cummins Inc.
CitationJoshi, M., Gosala, D., Allen, C., Srinivasan, S. et al., "Diesel Engine Cylinder Deactivation for Improved System Performance over Transient Real-World Drive Cycles," SAE Technical Paper 2018-01-0880, 2018, https://doi.org/10.4271/2018-01-0880.
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