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Study finds that replacing older, highly polluting school buses could lead to 1.3 million fewer daily absences annually

Green Car Congress

The suspected cause of these preventable absences is exposure to high levels of diesel exhaust fumes, which can leak into school bus cabins or enter buses through open windows. Applying their results nationwide, the researchers extrapolated that replacing all pre-2000 model school buses would lead to more than 1.3

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Chevrolet introduces second-generation Duramax 4-cylinder diesels; global engine

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Applications include powering the Colorado pickup truck and Trailblazer SUV for the Thailand and Southeast Asian markets. The new Duramax engine uses an electric EGR valve for greater precision and a larger EGR cooler to further reduce recirculated exhaust gas temperature. The new Duramax 2.8-liter 2,000 bar common rail system.

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U Toronto study measures GDI emissions in urban near-road environment

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Market share of GDI vehicles is increasing rapidly; between model years 2009 and 2014 there was a 10-fold increase in GDI engine sales. Some projections expect the 2016 market share of new LDVs with GDI engines to exceed 50%. —Zimmerman et al. Naomi Zimmerman, Jonathan M.

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Mercedes-Benz introduces next-gen OM 471 heavy-duty engine; more fuel efficient, more torque with fast build-up at very low revs

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Including overseas markets, production numbers for the OM 471 family have reached the 250,000 mark. 1; and a reduced exhaust gas recirculation rate (EGR rate). Now, all engine output ratings already muster up at least 2000 N·m of torque at just under 800 rpm. Exhaust gas recirculation.

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SwRI D-EGR gasoline demo vehicle delivers diesel efficiency at lower cost; potential for LEV III/Tier 3 emissions

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Southwest Research Institute (SwRI) announced preliminary test results of its Dedicated-Exhaust Gas Recirculation (D-EGR) demonstration vehicle ( earlier post ) at the SAE 2014 World Congress in Detroit. D-EGR brake specific fuel consumption (BSFC) at 2000 rpm 2 bar BMEP dropped 14.3% Hydrogen-enriched exhaust is routed to the intake.

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Additional details on Honda’s new 1.6L diesel

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This new engine offers 88 kW (120 PS, 118 hp) of power and 300 N·m (221 lb-ft) of torque at 2000 rpm with CO 2 emissions of 94 g/km (equivalent to 65 mpg US, 3.6 The engine air flow is managed by using an EGR (exhaust gas recirculation) system that operates at high and low pressure to reduce NO x emissions. Earlier post.).

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2015 VW Jetta TDI: a more refined, powerful and efficient diesel within a nicely redesigned model line

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In addition, its diesel version is the top selling passenger car diesel in the market here, with about 29% share, according to figures compiled by Baum & Associates and hybridcars.com. In other words, there is not a separate intake or exhaust camshaft. This means we have on the one camshaft one intake valve and one exhaust valve.

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