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GM develops integrated exhaust manifold cylinder head for 3.6L V6 direct injection engine; improvement in performance, fuel economy, emissions and noise

Green Car Congress

The reduced complexity of the design of the new integrated exhaust manifold cylinder head ( bottom ) compared to the old ( top ). GM has combined the exhaust manifold with the cylinder head into a single aluminum casting in the 2012 Camaro 3.6L The change reduces engine weight by 13 lbs. or 6 kg per engine.

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Volkswagen 2.0 TDI diesel for Euro 6d; SCR twin-dosing

Green Car Congress

Volkswagen continues to refine its most important diesel engine, the 2.0-liter With SCR twin dosing technology in the exhaust gas system, the diesel unit now undercuts the Euro 6d emission standard limits while also running quietly and smoothly, according to the company. TDI took a step forward and was therefore given the suffix “evo”.

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Used Car of the Day: 2012 Porsche Cayman S

The Truth About Cars

Today we bring you a relatively low-mileage 2012 Porsche Cayman S with a manual transmission. This one has some suspension and brake mods, though nothing involving the engine or exhaust. First, a note of housekeeping -- if you've been missing the UCOTD and QOTD, I was on vacation. OK, back to our usual programming.

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WHO IARC classifies diesel exhaust as carcinogenic to humans (Group 1)

Green Car Congress

After a week-long meeting of an expert working group, the International Agency for Research on Cancer (IARC), which is part of the World Health Organization (WHO), classified diesel engine exhaust (DEE) as carcinogenic to humans (Group 1), based on sufficient evidence that exposure is associated with an increased risk for lung cancer.

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York, Empa study finds retrofitting of VW diesel engines was successful

Green Car Congress

On the opening day of the Frankfurt International Motor Show (IAA), the US Environmental Protection Agency (EPA) published a Notice of Violation: VW diesel engines with 1.6 In many countries, the EA 189 engines manufactured by the VW group had to be retrofitted with software or hardware updates. Company boss Martin Winterkorn resigned.

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Researchers propose low-temperature SOFC unit for reducing NOx and oxidizing HCs in lean-burn engine exhaust

Green Car Congress

A team from National Tsing Hua University, Taiwan, reports that a low-temperature solid oxide fuel cell (SOFC) emissions control system for lean-burn engines can simultaneously reduce the high concentrations of NO x and oxidize hydrocarbon (HC) emissions.

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US study of miners links heavy exposure to diesel exhaust to increased risk of lung cancer death; researchers suggest implications for urban areas with high exhaust concentrations

Green Car Congress

In a study of non-metal miners in the US, federal government scientists report that heavy exposure to diesel exhaust increased risk of death from lung cancer. For never-smokers, risk of lung cancer death increased with increasing diesel exhaust exposure. effect of diesel exhaust exposure on lung cancer mortality in.

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