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The transport sector is a major contributor to ambient fine particles in major cities, and emits some 19% of global black carbon. Recent research has identified diesel vehicles and engines as one of the most attractive sectors for black carbon mitigation. Fine particles and black carbon from diesel vehicles and engines can be virtually eliminated through technologies that are present on half of new heavy-duty vehicles sold today.
The Coaltion's Heavy-Duty Diesel Vehicles and Engines Initiative works to catalyse major reductions in black carbon through adoption of clean fuel and vehicle regulations and supporting policies. Efforts focus on diesel engines in all economic sectors.
The Initiative’s objective is to virtually eliminate fine particle and black carbon emissions from new and existing heavy-duty diesel vehicles and engines through the introduction of low sulfur fuels and vehicle emission standards. Roughly half of new and existing heavy-duty diesel vehicles are currently subject to world-class emission standards with diesel particle filters and the aim it so ensure that the remaining unregulated or inadequately regulated half of global diesel fleet will achieve the same. Our target is to reach 10 ppm sulfur in fuels by 2025 globally, while at the same time also supporting the introduction of vehicles emissions standards, contributing to the overall goal of the CCAC.
At COP 21 in Paris, the Diesel initiative launched the Coalition's 'Global Strategy to Introduce Low Sulphur Fuels and Clean Diesel Vehicles', the first global plan to reduce black carbon emissions from the global on-road diesel fleet by over 90%. At the Coalition's 2016 High Level Assembly 38 countries endorsed the strategy. The strategy sets a global timeline: most countries adopt low sulphur diesel by 2020, and countries to 50 ppm by 2025, and most countries go to ultra-low (10 ppm) sulfur in fuels by 2030.
If fully implemented by 2050, it would result in 500,000 avoided deaths per year and reduce cumulative emissions of diesel black carbon by an estimated 7.1 million metric tonnes. The initiative is now working with a number of countries toward these goals.
This document presents results from the Climate & Clean Air Coalition’s Diesel Initiative reported between July 2016 and June 2017. These results were recorded using the Demonstrating...
This report is an overview of the Coalition's progress from 2016 to 2017 and, because it is our 5th anniversary, includes information on the status of short-lived climate pollutant emissions,...
Lead Partner: A Coalition partner with an active role in coordinating, monitoring and guiding the work of an initiative.
Implementer: A Coalition partner or actor receiving Coalition funds to implement an activity or initiative.
Fine particles penetrate deep into the lungs. A recent study of leading public health risks ranked ambient fine particle pollution ninth among all risk factors in 2010, contributing to 3.7 million deaths in 2012. Black carbon is the second largest contributor to human-induced climate warming to-date, after carbon dioxide. All major OECD economies have dramatically reduced fine PM and BC emissions from heavy-duty diesel vehicles through a combination ultra-low sulfur diesel fuel and diesel emission control technologies; there is up to a 99 per cent removal efficiency with diesel particulate filters.
Desulfurization refers to the gradual move to low sulfur fuels. Most developed countries have now moved to fuels with a sulfur content of 50 parts per million or even 15 or 10 parts per million (ppm). Reducing fuel sulfur levels is a vital precondition for reducing the health impacts associated with transportation. Fuel sulfur directly increases production of fine particulate matter (PM2.5) in vehicle exhaust. PM2.5 is a dangerous pollutant associated with heart disease, lung cancer, and a range of other harmful health effects. Low sulfur fuels are necessary for cleaner engines (for example high compression diesel engines) and high fuel sulfur levels also interfere with the performance of vehicle emissions control equipment designed to remove small particulates and other pollutants from the exhaust stream (for example particulate filters and catalysts).
Green freight refers to the efforts of the freight sector to help reduce greenhouse gas emissions and air pollutants and improve fuel efficiency across the global supply chain while maintaining competitiveness and economic growth. By reducing the amount of energy (i.e., fuel use) associated with freight transport through a range of measures, businesses can reduce costs and become more competitive. These efficiency measures invariably lead to emissions savings that result in broader benefits for society and the environment. Freight movement is largely driven by diesel-powered cargo vessels, trucks, and trains. While diesels are the workhorses of the transport sector and relatively energy efficient (as compared to gasoline vehicles or jet aircrafts), their combined contribution to transportation-related climate warming greenhouse gases and other short-lived climate pollutants, particularly black carbon, is significant.
Soot-free engine technologies are those that achieve at least a 99% reduction in tailpipe black carbon emissions compared to uncontrolled diesel exhaust. These technologies include any diesel or alternative fuel engines certified to Euro VI or US 2010 emission levels.
As an example, soot-free buses can be powered by a wide range of fuels including fossil diesel or compressed natural gas (CNG), biogas, or other liquid biofuels, and electric drive engines including hybrid drive, fuel cell, and battery electric drivetrains. A soot-free bus – be it diesel, natural gas or electric – will emit 99% less tailpipe PM2.5 and 85% less black carbon compared to a diesel bus without any emission controls.
Diesel engines power the dominant share of goods movement, construction equipment, and public transport vehicles in the global economy. This strategy presents a roadmap to reduce small ...
This presentation discusses the reasons why the world should reduce black carbon emissions from diesel vehicles and outlines the strategy to do so via the...
There are many ways to improve air quality and reduce the climate-forcing impacts of vehicle use. Often overlooked in discussions of advanced vehicle technology and alternative fuels are the...