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Effective NOx Reduction in High Boost, Wide Range and High EGR Rate in a Heavy Duty Diesel Engine
Technical Paper
2009-01-1438
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The emission reduction from diesel engines is one of major issues in heavy duty diesel engines. Super Clean Diesel (SCD) Engine for heavy-duty trucks has also been researched and developed since 2002. The main specifications of the SCD Engine are six cylinders in-line and 10.5 l with a turbo-intercooled and cooled EGR system. The common rail system, of which the maximum injection pressure is 200 MPa, is adopted. The turbocharger is capable of increasing boost pressure up to 501.3 kPa. The EGR system consists of both a high-pressure loop (HP) EGR system and a low-pressure loop (LP) EGR system. The combination of these EGR systems reduces NOx and PM emissions effectively in both steady-state and transient conditions. The emissions of the SCD Engine reach NOx=0.2 g/kWh and PM=0.01 g/kWh with aftertreatment system. The adopted aftertreatment system includes a Lean NOx Trap (LNT) and Diesel Particulate Filter (DPF). SCD Engine has achieved the emission targets finally and has brought new technologies for the reduction of exhaust emissions.
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Authors
- Takayuki Adachi - New ACE Institute Co., Ltd.
- Yuzo Aoyagi - New ACE Institute Co., Ltd.
- Masayuki Kobayashi - New ACE Institute Co., Ltd.
- Tetsuya Murayama - New ACE Institute Co., Ltd.
- Yuichi Goto - National Traffic Safety and Environment Laboratory
- Hisakazu Suzuki - National Traffic Safety and Environment Laboratory
Topic
Citation
Adachi, T., Aoyagi, Y., Kobayashi, M., Murayama, T. et al., "Effective NOx Reduction in High Boost, Wide Range and High EGR Rate in a Heavy Duty Diesel Engine," SAE Technical Paper 2009-01-1438, 2009, https://doi.org/10.4271/2009-01-1438.Also In
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