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Cummins Begins Production of First EPA Tier 4 Interim Engines; Up to 5% Improved Fuel Efficiency

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EPA Tier 4 Interim and EU Stage IIIB emissions standards and effect dates vary by power category. has begun production and supply of the first EPA Tier 4 Interim and EU Stage IIIB certified engines and aftertreatment for early installation by off-highway equipment customers. Source: Cummins. Click to enlarge. Cummins Inc.

EPA 218
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SwRI launches Particle Sensor Performance and Durability consortium

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Sensors that trigger engine malfunction illumination light (MIL) or a fault code when particle emissions exceed a certain threshold downstream of an exhaust diesel particle filter (DPF) will soon be required to meet California Air Resources Board (ARB) and US Environmental Protection Agency (EPA) on-board diagnostics (OBD) regulations.

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EC sets out strategy to cut CO2 emissions from heavy-duty vehicles; short-term focus on measurement and reporting

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This holistic approach is not strictly comparable with that of the US and Japan, the Commission said. Commission and EPA staff have been in regular contact and the latter have agreed that a holistic approach is preferable, according to the Commission. Europe Fuel Efficiency Heavy-duty Policy'

Emissions 247
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Tenneco showcasing new large engine SCR system for marine applications

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Tenneco will showcase its complete urea-dosing control, fluid handling and catalyst solution for selective catalytic reduction (SCR) aftertreatment at the 2015 BariShip Maritime Fair in Imabari, Japan, 21-23 May.

Mariner 150
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Toyota previews Prius v; first expansion of planned Prius family

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The Prius v is one of three planned regional iterations of the vehicle: Toyota will release the vehicle as the Prius+ in Europe, and as the Prius α in Japan ( earlier post ). Coolant recirculation through the exhaust heat recirculation system is now electronically controlled by a switch valve. Powertrain. L/100km / 5.88

Prius 186
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Mazda Launches Next-Generation SKYACTIV Technologies

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The Mazda Demio (known overseas as the Mazda2) will be the first model to feature SKYACTIV technology and will go on sale in Japan in the first half of 2011. A 4-2-1 exhaust system, cavity pistons, multihole injectors and other innovations enable the high compression ratio. Earlier post.) SKYACTIV-D.

Mazda 199
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Toyota anticipates 2016 Prius at 52 mpg combined, 56 mpg with Eco grade

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Final EPA figures pending.) On top of that, both the intake and exhaust systems are quieter than before. Among new features is the cooled Exhaust Gas Recirculation (EGR) system, which operates even at the engine’s maximum output to enable an optimized stoichiometric air/fuel ratio across the entire powerband.

Prius 150