This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Potential and Challenges of HPDI
Technical Paper
2017-01-1928
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Globally, many jurisdictions are working toward greenhouse gas (GHG) emissions standards for medium- and heavy-duty vehicles that will take effect in the next decade and require GHG reductions of up to 25% from 2017 legislated levels. While diesel engines will require increasingly complex improvements, high pressure direct injection (HPDI) of natural gas can provide GHG reductions of approximately 20% (75% or more with renewable natural gas / bio-methane) while preserving the same power density, torque and performance as diesel.
This paper will provide an overview of the improvements in the Westport™ HPDI 2.0 components as well as performance and emissions results demonstrated to-date. The potential and challenges of higher injection pressures will be explored while also investigating sources of and methods to eliminate methane venting on the vehicle.
Recommended Content
Authors
Topic
Citation
Mumford, D., Goudie, D., and Saunders, J., "Potential and Challenges of HPDI," SAE Technical Paper 2017-01-1928, 2017, https://doi.org/10.4271/2017-01-1928.Also In
References
- Ouellette , P. ; Goudie , D. ; McTaggart-Cowan , G. Progress in the Development of Natural Gas High Pressure Direct Injection for EuroVI Heavy Duty Trucks Proceedings of ATZ Live Internationaler Motorenkongress 2016
- McTaggart-Cowan , G. , Mann , K. , Huang , J. Singh A. et al. Direct Injection of Natural Gas at up to 600 Bar in a Pilot-Ignited Heavy-Duty Engine SAE Int J. Engines 8 3 2015 10.4271/2015-01-0865
- McTaggart-Cowan , G. , Huang , J. , and Munshi , S. Impacts and Mitigation of Varying Fuel Composition in a Natural Gas, Heavy-Duty Engine SAE Int. J. Engines 10 4 2017 10.4271/2017-01-0777