Emission cutter on test
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• Christian Salvesen is testing a novel steam injection device which is claimed to cut Euro-1 emissions down to Euro-3 levels on a Mercedes-Benz and an ERF tractor..
Built by Doncaster-based K H Manufacturing, and developed with the involvement of scien tists at Leeds University, the £600 package was invented by Carl-Heinz Megenbier.
"It works on the old principal that your car always goes better on a wet day," says Christian Salvesen's technical director Stuart Annan. "My fleet engineer is testing it out now to see if it is worthwhile, but it will be four to six weeks before we know whether it is worth putting some time into."
The device feeds water from a tank to a boiler close to the engine manifold. Heat from the exhaust warms the water, and a mixture of air and steam is sucked into the manifold as the driver accelerates. The steam is said to burn away unburnt hydrocarbons and noxious gases.
A spinoff is a 10% improvement in the fuel consumption of naturally-aspirated diesels, says KH Manufacturing marketing director Bob Holmes, which a smaller improvement in turbo. diesels.