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DieselNet: Internal Combustion Engine & Emission Technology

Engine & emission technology online—since 1997

The Log

2 March 2021: The International Energy Agency (IEA) has released its analysis of CO2 emissions in 2020, the year of the Covid-19 pandemic, which shows that many economies are now seeing emissions climbing above pre-crisis levels [more ...]

26 February 2021: Emission standards—Added summary of Chinese New Energy Vehicle (NEV) program.

25 February 2021: New Technology Guide paper discusses Emission Tampering in engines and vehicles.

23 February 2021: Daimler Trucks and Cummins signed an MOU to form a strategic partnership in medium-duty engine systems. Under the plan, Cummins will establish an engine plant within the Mercedes-Benz Mannheim campus, and produce Euro VII medium-duty diesel engines for Daimler [more ...]

12 February 2021: The 24th ETH Conference on Combustion Generated Nanoparticles will be organized on June 22-24 as an online conference. The Conference—organized under the auspices of FOEN, SCS and ETH—covers all aspects of nanoparticle emissions from engines and other combustion sources, particle aging in ambient air, technical mitigation aspects, impact of particles on health, environment and climate, and particle legislation. There is still time to submit abstracts for oral and poster presentations.

11 February 2021: A number of interesting presentations given at the Engine + Powertrain “Sustainable Internal Combustion Engine Symposium” focused on engine efficiency technologies, ranging from engine efficiency improvements, GHG emission reduction, and thermal management, to new engine concepts [more ...]

6 February 2021: Updated summary of Chinese emission standards for nonroad engines reflects the final Stage IV regulations issued in December 2020.

29 January 2021: New Technology Guide paper discusses engine, powertrain, and vehicle Efficiency Technologies.

26 January 2021: Emission standards—the summary of New Periodic Technical Inspections (PTI) has been updated to reflect the provisions of the recently adopted Dutch PTI regulation, which will require the use of particle counting instruments for PTI inspections of diesel vehicles with particulate filters.

19 January 2021: Methane emissions from the global oil and gas industry fell by 10% in 2020, according to the International Energy Agency (IEA), as energy companies slashed output in response to the historic shock of the Covid-19 crisis. However, the IEA warns that when the global economy recovers, these emissions could rebound strongly without greater action by companies, policy makers and regulators [more ...]

14 January 2021: The heating of the planet has been proceeding as predicted by so many scientists. 2020 ranks as the second-hottest year on record, according to an analysis by NOAA. The average land and ocean surface temperature across the globe in 2020 was 0.98°C above the 20th century average—just 0.02°C cooler than the 2016 record. The Northern Hemisphere saw its hottest year on record at 1.28°C above average. 2020 was also the Earth’s 44th consecutive year with global land and ocean temperatures above the 20th century average.

13 January 2021: Emission standards—added summary of China Heavy-Duty Commercial Vehicle Test Cycle (CHTC), a set of six chassis dynamometer test cycles for various categories of heavy-duty vehicles.

12 January 2021: The European Environment Agency (EEA) released a briefing that questions the idea that decoupling of economic growth from environmental pressures and impacts—a key assumption underlying the European Green Deal—can be achieved at the global scale [more ...]

7 January 2021: Emission standards—added summary of China Engine Test Cycle (CETC).

26 December 2020: Friction and Ancillary Losses—a new Technology Guide paper discusses engine mechanical losses from friction and ancillary loads.

14 December 2020: Non-exhaust emissions will soon overtake vehicle exhaust as the leading source of fine particles released into the air by road traffic, according to a new OECD report. Heavy electric vehicles with long-distance batteries could compound the particle pollution problem, despite the fact they produce no exhaust emissions [more ...]

10 December 2020: Total GHG emissions reached a new high of 59.1 GtCO2e in 2019, according to a new report by the UN Environment Programme (UNEP). Fossil CO2 emissions dominate total GHG emissions (65%) and the growth in GHG emissions [more ...]

7 December 2020: Emission standards: added summary of China Light-Duty Vehicle Test Cycle (CLTC).

4 December 2020: The hte company—now on DieselNet—develops high throughput reactor systems and processes for catalyst screening and evaluation.

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.