This study presents effect of injection timing on performance, combustion and emission characteristics of mahua biodiesel (Madhuca indica) and its blends with pure diesel on a 4 stroke tangentially vertical single cylinder (TV 1) direct injection diesel engine. At injection timing of 22° bTDC, blend B25 (25% mahua biodiesel and 75% pure diesel, by vol) gave optimum performance, which is very close to pure diesel. Thus B25 fuel can be effectively used in a diesel engine as an alternative fuel without any modification in the engine.

This study presents performance behaviors of a commercial diesel engine fueled with diesel and Jatropha based biodiesel (B100) at various loads (up to 100%) and compared using standard (conventional) and three new face profile designs (I, II & III) of piston rings. BTE of engine fueled with diesel increases 2-8% with new face profile design (III) of piston rings in comparison to standard (conventional) piston rings. BTE enhances 8-16% when engine is fueled with biodiesel using face profile design (III) on piston rings.

This study presents bioconversion of water hyacinth (Eichhornia crassipes) to bioethanol using two-sequential steps of acid hydrolysis (10% sulfuric acid) and yeast (Candida intermedia) fermentation. A maximum ethanol yield (coefficient, 0.21 g g-1; productivity, 0.010 g l-1h-1) was comparable to predicted value (0.23 g g-1) obtained by CCD (Central Composite Design). Two colorimetric methods (phloroglucinol and dichromate assays) were used for determination of xylose and ethanol using UV-Vis spectrophotometer.

Music blared and white smoke swirled in the cavernous Tata Motors hall at the Delhi Auto Expo as an excited crowd milled near a stage displaying the company's new hybrid car.

Most, though, were craning their necks to catch a glimpse of the carmaker's new gas-guzzling Safari off-roader being launched on the other side of the hall. Few seemed to notice the sparkling green-technology vehicle behind them.

The demand for petroleum products in India has been increasing at a faster rate than the increase in domestic availability, resulting in increased imports. The transport sector is the single largest consumer of petroleum products. Secondly, about 65 % of total air pollution is caused by the emissions of pollutants from the vehicles run on petroleum products. In the wake of this, there is urgent need to introduce alternate fuels as substitutes for diesel and petrol in the transport sector. Biogas, a clean and renewable fuel, has vast potential in India.

The European Commission has unveiled its Energy Roadmap 2050, which aims to cut emissions by over 80% by 2050 without disrupting energy supplies and competitiveness. Based on an analysis of scenarios created by combining the four main decarbonisation routes in different ways (energy efficiency, renewables, nuclear, and carbon capture and storage), the roadmap describes the consequences of a carbon-free energy system and the policy framework needed, allowing Member States to make required energy choices and create a stable business climate for private investment.

This new working paper by ICCT identifies the most effective technologies for CO2, emissions and safety measures and maps the status of regulatory programs for 2- and 3-wheeler management in Asian countries.

Over the next four decades, the global transportation sector will face unprecedented challenges related to demographics, urbanization, pressure to minimize and dislocate emissions outside urban centres, congestion of aging transport infrastructure and growth in fuel demand. In light of these challenges and the levels of uncertainty, the World Energy Council (WEC) decided to re-examine the future of the transport and mobility sector by building Global Transport Scenarios to 2050.

This illustrated guide provides a rich collection of images of sustainable urban transport initiatives from around the world. It considers the transport problems evident in many cities in Asia, including high levels of energy consumption, carbon dioxide emissions, congestion, road casualties, urban sprawl, and social exclusion. The projections are that these worsening trends are set to continue.

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