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DieselNet: Internal Combustion Engine & Emission Technology

Engine & emission technology online—since 1997

The Log

29 July 2020: Updated Technology Guide paper on Natural Gas Engines includes more examples on mixture preparation in gas engines.

27 July 2020: New Technology Guide paper talks about Cylinder Deactivation for Diesel Engines, a prospective technology to manage aftertreatment temperature in diesel engines.

13 July 2020: SuperTruck II update, based on the 2020 US DOE Annual Merit Review held virtually on June 1-4 [more ...]

7 July 2020: Emission standards—added summary of Korean programs to reduce fine dust emissions from ships.

29 June 2020: For your reading pleasure, a summary of the engine and emission sessions from the SAE WCX 2020 Digital Summit that was held virtually on June 16-18 [more ...]

24 June 2020: Emission standards—added summary of the New Periodic Technical Inspections (NPTI) initiative that aims to incorporate particle number measurements in the EU PTI emission tests to detect malfunctioning diesel particulate filters.

23 June 2020: BP Statistical Review of World Energy released last week shows that global energy demand growth slowed down to 1.3% in 2019, from 2.8% in the previous year. Renewables recorded a strong growth, while the share of fossil fuels in the global primary energy mix, at 84.3%, remains stable [more ...]

18 June 2020: John J. Mooney, who invented the three-way catalyst (TWC) together with a team at Engelhard, passed away at the age of 91 on June 16, 2020. John was a great man and scientist.

13 June 2020: An updated and restructured Technology Guide paper titled Catalytic Diesel Filters covers material that was previously detailed in two papers, ‘Catalyzed Diesel Filters’ and ‘CRT Filter’.

28 May 2020: Registrations are open for a Cambustion webinar, The Use of Fast Response Gas Analyzers for Diesel Engine and Aftertreatment Development, to be held June 3rd, 10 am EDT. If you cannot attend, or if you wish to prepare yourself before attending, you may want to read the recent feature article on the topic by Mark Peckham.

27 May 2020: California and 22 other states take US EPA/NHTSA to court over the rollback of CAFE and GHG emission standards for model year 2021-2026 passenger cars and light trucks [more ...]

24 May 2020: 3DATX Corporation developed a range of parSYNC® iPEMS portable emission analyzers that can measure PM/PN, NO/NO2/NOx, CO and CO2 emissions.

19 May 2020: A new Technology Guide paper on Engine Efficiency—a must-read primer for anyone who strives to deepen his understanding of energy losses in internal combustion engines. Some sections of the new paper were previously a part of the Engine Fundamentals paper, which has been updated as well.

9 May 2020: TSI Incorporated develops and manufactures state-of-the-art instruments to quantify and analyze particle emissions from light-duty and heavy-duty engines, including particle counters, particle size distribution analyzers, and sample conditioning systems.

Diesel Engine & Emissions

The diesel engine is the most efficient power plant among all known types of internal combustion engines. Heavy trucks, urban buses, and industrial equipment are powered almost exclusively by diesel engines all over the world. For the foreseeable future, the world’s transportation needs will continue to rely on the diesel engine and its gasoline counterpart. However, both engine technologies have been evolving to meet two major challenges: lower emissions and increased energy efficiency.

Internal combustion engines are significant contributors to air pollution. In response, clean diesel technologies with near-zero emissions of NOx and PM have been developed and introduced in regions with the most stringent emission standards. As this trend spreads to other parts of the world, the environmental focus has shifted to climate changing emissions and energy efficiency. The environmental benefit of low greenhouse gas emissions, traditionally associated with the diesel engine, is no longer sufficient. To meet future greenhouse gas and fuel economy regulations, new technologies are being developed—low temperature combustion, waste heat recovery, powertrain electrification, to name a few—that further increase the efficiency not only of the diesel engine powertrain but the entire vehicle as well. Under low-carbon regulatory policies, the scope for potential improvements is no longer limited to engines and vehicles, but also includes life cycle effects of fuel production and vehicle manufacture.

DieselNet, the only information service exclusively devoted to internal combustion engines and emissions, is an internet knowledge base for technical and business information on diesel engines, fuels, emissions and technologies required by the clean and efficient diesel engines of the future.