Use of Exhaust Valve Timing Advance for High Natural Gas Utilization in Low-Load Diesel Dual Fuel Operation

2011-01-1767

08/30/2011

Event
SAE International Powertrains, Fuels and Lubricants Meeting
Authors Abstract
Content
The current study examined diesel dual fuel (DDF) operations in a four-cylinder turbocharged diesel engine under low load conditions. Experiments were performed to investigate effects of diesel injection timings and exhaust valve timing advance for DDF operations under high levels of natural gas utilization.
Results showed that diesel injection timings played an important role in DDF combustion. Increasing the ratio of natural gas to total fuel resulted in greater amounts of HC and CO emissions. Advancing the exhaust valve timing increased the internal EGR, raised the in-cylinder temperature at IVC, and improved the combustion efficiency. To maximize the ratio of natural gas to total fuel, a combination of proper exhaust valve timing advance and a tuned timing of diesel injection should be employed to avoid excessive HC and CO emissions.
Meta TagsDetails
DOI
https://doi.org/10.4271/2011-01-1767
Pages
11
Citation
Tepimonrat, T., Kamsinla, K., Wirojsakunchai, E., Aroonsrisopon, T. et al., "Use of Exhaust Valve Timing Advance for High Natural Gas Utilization in Low-Load Diesel Dual Fuel Operation," SAE Technical Paper 2011-01-1767, 2011, https://doi.org/10.4271/2011-01-1767.
Additional Details
Publisher
Published
Aug 30, 2011
Product Code
2011-01-1767
Content Type
Technical Paper
Language
English