The Log

27 February 2015: Summary of the US EPA Workshop on Ultrafine Particles held on February 11-13, 2015 in Research Triangle Park, NC, USA [more ...]

25 February 2015: BOSMAL Automotive Research and Development Institute is a state-of-the-art laboratory and R&D center providing services in the area of emissions, fuels and lubricants testing, vehicle homologation, vehicle and component testing, as well as engine and powertrain development.

24 February 2015: Updated and expanded Technology Guide paper on Fuel Injection for Clean Diesel Engines. Most of the added material landed in the section on post injections. The additions include five new figures and three optical engine videos—courtesy of Dr. Christophe Barro of ETH Zürich.

18 February 2015: By 2035, world’s energy consumption will grow by 37% and carbon emissions by 25%, according to the BP Energy Outlook 2015 [more ...]

17 February 2015: Updated Technology Guide paper on Diesel Fuel Injector Nozzles includes a re-written and expanded section on variable injection nozzle geometry.

16 February 2015: The 19th ETH Conference on Combustion Generated Nanoparticles has issued a call for papers. Paper abstracts are due by April 10, 2015. The conference will be held from June 28th to July 1st, 2015 at the at ETH Zentrum in Zürich, Switzerland.

10 February 2015: Updates in paper on Emission Formation in Diesel Engines, including an expanded discussion of soot formation during diesel combustion.

6 February 2015: Emission standards: Argentina has released new Euro 5 implementation schedule for light-duty vehicles and heavy-duty engines.

5 February 2015: Updated MIRATECH page reflects the company’s current portfolio of emission reduction and sound attenuation products for stationary engines.

4 February 2015: Updated paper on Common Rail Fuel Injection—added more discussion on servo controlled nozzle response.

28 January 2015: Summary of the technical sessions from the 13th International CTI Conference Exhaust Systems held on 19-21 January 2015 in Stuttgart, Germany [more ...]

14 January 2015: The French energy ministry issued a Ministerial Order that increases the maximum content of FAME biodiesel in diesel fuel to 8% by volume—one percent above the current EU-wide limit of 7% [more ...]

8 January 2015: Updated paper on Impact of Engine Oil on Emissions and Fuel Economy—added section on the effects of engine oil aging.

31 December 2014: Rewritten and expanded Technology Guide paper on diesel particulate filters using fuel borne catalysts.

30 December 2014: Updated Technology Guide paper on Boosting Systems—added section on boost pressure control.

19 December 2014: A new Technology Guide paper covers HD Diesel Engine Technology—US 1990-1998 [announcement | full text].

17 December 2014: The updated paper on Oil Service Classifications includes more details on the proposed PC-11 category and other revisions.

8 December 2014: The updated Johnson Matthey page covers the company’s portfolio of emission control products for heavy-duty diesel and for stationary applications.

25 November 2014: Re-written and updated summary of US emission standards for heavy-duty onroad diesel engines.

24 November 2014: A a new report by the World Bank, titled "Turn Down the Heat" [press release | full report], finds that globally, warming of ~1.5°C above pre-industrial times—up from 0.8°C today—is already locked into Earth’s atmospheric system. The predicted effects include some 30 cm of sea level rise by 2100, more severe droughts and the extinction of 90% of the world’s coral reefs.

21 November 2014: Updated summary of Brazilian diesel fuel regulations includes the recent ANP 50/2013 specification.

20 November 2014: A new report by the Natural Resources Defense Council (NRDC), the Sierra Club and the Clean Air Task Force concludes that the US EPA could cut climate warming methane emissions in half by targeting the oil and natural gas industries—the largest sources of emissions of methane. The report recommends that the EPA issue nationwide methane standards, such as leak detection and mandatory control practices for equipment used on wellpads, gas processing plants and compressors. A summary of the report was released today, the full report is expected later this Fall.

17 November 2014: Updated summary of Brazilian biodiesel standards includes the new ANP 45/2014 specification.

12 November 2014: IEA releases the World Energy Outlook 2014, which predicts that world primary energy demand will increase by 37% by 2040. World oil supply will rise to 104 million bpd in 2040, with the Middle East becoming the major source of supply growth. Energy-related CO2 emissions will grow by one-fifth by 2040 [more ...]

11 November 2014: The recently published Stage V proposal is now covered in the updated summary of EU nonroad emission standards.

10 November 2014: The updated Technology Guide paper on diesel combustion systems includes a new section on deep spray angle piston bowls, a number of other revisions throughout the text and eight new figures.

6 November 2014: The global energy demand will increase by 60% by 2040, with fossil fuels remaining the main source of supply—in spite of efforts to mitigate climate change—predicts Opec in its World Oil Outlook 2014. Oil prices will average $177 per barrel by 2040 and the world will need an additional 21 million bpd of crude to meet the predicted 2040 demand of 111 million bpd. The forecast is contingent on the continuing growth of the population and the economy, particularly in Asia.

31 October 2014: Summary of technical sessions from the ASME 2014 ICE Fall Technical Conference held on October 19-22, 2014 in Columbus, Indiana, USA and hosted by Cummins [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.