Dear Colleagues,

Human life has been fundamentally changed due to the invention and development of internal combustion engines at the start of the nineteenth century. Harnessing that power leads to the invention of a range of engines used in the smallest lawn mower to the largest trucks, buses, generators, marine, and locomotive applications. Internal combustion engines have become an irreplaceable part of human existence. In addition to being the most common means of powering the transport of people and goods, any gasoline or diesel engine is also a substantial source of air and noise pollution. Internal combustion engines burning carbonaceous fuels contribute to more than 25% of the world’s total power requirement and in doing so, they produce about 10% of the world’s greenhouse gas emission of CO2. Apart from the environmental impact, internal combustion engines cause severe impacts on the health of humans. Further emissions from internal combustion engines are unburnt hydrocarbons (HC), carbon monoxide (CO), nitrogen oxides (NOx), and particulate matter (PM). Emissions of hydrocarbons and nitrogen oxides from engines combine in the presence of sunlight to create photochemical smog. Major cities have issues with smog, which is a health hazard for humans and animals and can be toxic to plants. Furthermore, particulate matter contains over 40 mutagenic and carcinogenic chemicals. Interest in the health impacts and PM-related cancer intensified when it was discovered that organic solvent extracts of the exhaust PM were mutagenic and can travel through the circulatory system and accumulate in sensitive tissues.

This Special Issue invites contributions to highlight the most recent understanding and developments in, but not restricted to, the areas of advancement and/or new aftertreatment systems to reduce emissions from internal combustion engines, the formation and reduction of emissions from combustion engines, low-emission alternate fuels and processes, and the broader impact of emissions on public health. This Special Issue intends to act as a platform for the rapid dissemination of new knowledge in this field and promote technical and societal solutions to this critical and ever-present challenge.

Dr. Saiful Bari
Dr. Michael Evans
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

• Internal combustion engines
• Emissions
• Aftertreatments
• Catalytic convertors
• Filters
• Renewable fuels
• IC engines and public health
• Emission regulations