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The Log

15 April 2014: A new report by the Intergovernmental Panel on Climate Change (IPCC) concludes that global emissions of greenhouse gases have risen to unprecedented levels despite a growing number of policies to reduce climate change [more ...]

14 April 2014: The Technology Guide paper on Variable Valve Actuation has been updated with information on the Lotus AVT camless VVA technology.

7 April 2014: The Marine Environment Protection Committee (MEPC) of the International Maritime Organization (IMO) adopted amendments to the MARPOL Annex VI regulation to uphold the original 2016 deadline for the implementation of Tier III NOx emission standards for ships [more ...]

27 March 2014: EU Commission investigates price fixing among automotive exhaust system suppliers [more ...]

17 March 2014: Updated summary of Indian emission standards for diesel engines used in generator sets.

12 March 2014: Updated summary of the US EPA Tier 3 emission standards for light-duty vehicles reflects the provisions of the final Tier 3 regulation.

6 March 2014: The proposed US government budget for FY 2015 would eliminate funding for Diesel Emissions Reductions Assistance (DERA) grants. Diesel Technology Forum called on the Congress to rebuff Obama Administration and extend the DERA program.

3 March 2014: US EPA finalizes Tier 3 emission and gasoline sulfur standards for light-duty vehicles [more ...]

28 February 2014: We are pleased to announce a major update and expansion of the technical papers on common rail fuel injection—highly recommended reading for those who wish to understand the common rail technology.

15 February 2014: Summary of the technical sessions from the 12th CTI Forum: Exhaust Systems, held in Mainz, Germany on January 27-29, 2014 [more ...]

14 February 2014: Actual methane emissions in the United States are 1.25 to 1.75 times higher than the estimates by the US EPA, concludes a new analysis of more than 200 studies on natural gas leakage, published in the journal Science. The aggregation of studies shows that bottom-up leakage estimates like EPA’s are consistently smaller than those derived from atmospheric sampling of methane on a regional and national scale. According to the EPA figures, about 1.5% of the US gross natural gas production leaks into the atmosphere. However, even if the actual leakage is higher by 25-75%, substituting coal with natural gas still reduces GHG emissions—gas leakage would have to amount to as much as 7.4% to make the carbon footprint of natural gas and coal equal. On the other hand, the carbon footprint of diesel and natural gas become equal at a gas leak level of 1.7%. At the current leakage levels, switching from diesel to natural gas results in increased GHG emissions, according to the study.

22 January 2014: The European Commission proposes 2030 climate and energy policy goals that do not include biofuel targets for transport beyond 2020 [more ...]

16 January 2014: The European Union’s climate and energy strategy for 2030 will not include a specific target on reducing emissions from transport, reports Reuters. The existing sub-targets for sectors such as transport and energy would be abandoned and replaced with one global target for the entire economy, allowing flexible implementation of cost-effective emission reduction policies. EU analysis has shown that reducing transport emissions, such as through increased biofuel use, is one of the most expensive ways of tackling climate change. Thus, the existing targets to reduce fuel emissions by 6% and to get 10% of all transport fuel from renewable sources by 2020 are not expected be extended. The Commission is expected to publish the proposal on January 22nd.

8 January 2014: An updated and expanded Technology Guide paper on Engine Fundamentals (formerly titled Diesel Engine Fundamentals) [announcement | paper]

11 December 2013: New Technology Guide paper, titled Diesel Engines, talks about the definition and basic characteristics of the diesel engine [announcement | paper]

3 December 2013: US EPA will hold a webinar for interested applicants for the construction equipment rebate program on Monday, December 9th at 1pm EST: register | webinar slides | FAQ.

20 November 2013: New Technology Guide paper discusses the Early History of the Diesel Engine [announcement | paper]

16 November 2013: US EPA proposed 2014 renewable fuel standards. Renewable fuel volumes would be reduced for the total and the advanced biofuel categories. Biomass-based diesel (biodiesel) requirements would remain unchanged for 2014 and 2015, at the 2013 level [more ...]

12 November 2013: International Energy Agency (IEA) releases the World Energy Outlook 2013, presenting their vision of global energy trends through 2035 [more ...]

29 October 2013: Summary of the technical sessions from the ASME Internal Combustion Engine Division 2013 Fall Technical Conference held October 13-16, 2013 in Dearborn, Michigan [more ...]

25 October 2013: The Diesel Emissions Conference India 2013 was held on October 8-10 in Pune [more ...]

22 October 2013: Updated summaries of Chilean emission standards for light-duty vehicles and heavy-duty engines. Updated summary of Chilean diesel fuel regulations.

18 October 2013: The International Agency for Research on Cancer (IARC) has classified outdoor air pollution as carcinogenic to humans [more ...]

27 September 2013: The United Nations IPCC climate change panel has concluded that global warming is unequivocal, and since the 1950s many of the observed changes are unprecedented over decades to millennia. Human influence on the climate system is clear, and it is extremely likely that human influence has been the dominant cause of the observed warming since the mid-20th century.

24 September 2013: A&D updated their DieselNet Business Directory page with information on BEX-1000FT, a multi-component gas analyzer based on Fourier Transform Infrared (FTIR) technology.

10 September 2013: Updated summary of Brazilian diesel fuel specifications. The material has been split into separate articles covering the specifications for automotive and certification fuel, as well as biodiesel.

6 September 2013: The World Bank intends to promote reductions of short-term climate forcing agents, such as black carbon and methane, and to require that an emission reduction component is included in their future projects [more ...]

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 and diesel powered passenger cars are increasingly popular. 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 are evolving at an ever increasing pace to meet two major challenges: lower emissions and increased energy efficiency.

Internal combustion engines are significant contributors to air pollution that can be harmful to human health and the environment. 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: North America, Europe and Japan. While new clean diesel engines are gradually replacing the population of older diesel engines in these regions, older engines already in service are being retrofitted with clean diesel technologies to hasten emissions reductions. 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 diesel engines and emissions, is an internet forum for the exchange of technical and business information on diesel engines, fuels, emissions and many of the important technologies required by the clean and efficient diesel engines of the future.