The University of California, Riverside Bourns College of Engineering Center for Environmental Research and Technology (CE-CERT) and Southern California Gas Co.(So
CalGas) today announced the results of a new study on ultra-low emission natural gasheavy-duty engines, showing a new 11.9-liter engine achieved California’s lowest smog-forming emissions standard, and maintained those emissions during all types of driving.
Kent Johnson, associate research engineer at CE-CERT, led the tests on the near-zero emissions natural gas engine. The evaluation included regulated and non-regulated emissions, ultrafine particles, global warming potential, and fuel economy. The testing was performed during in-use testing on a dynamometer that simulated various types of driving conditions, from pulling into a loading dock to regional hauling. Johnson performed similar testing on an 8.9-liter near-zero natural gas engine last year.
“Large scale and accelerated deployment of near zero-emissions engine technology is vital for achieving the necessary emission reductions to achieve federal air quality standards in 2023 and 2031,” said Wayne Nastri, executive officer of the South Coast Air Quality Management District. “To meet our air quality goals, we must continue to see improvements in the transportation sector, which contributes the most air pollution in our region.”
Source: University of California, Riverside