Rolls-Royce has run a demonstrator engine specifically devoted to the optimisation of a new lean-burn
and low-emissions combustion system for the first time.
Most units use lean-burn
([lambda] > 1) internal combustion engines to generate heat and electric power from natural gas, achieving high overall efficiencies, thus contributing to future C[O.
This enables the engine to operate on the lean-burn
principle which increases engine efficiency and reduces peak temperatures - cutting Nitrogen Oxide emissions.
We are well placed to produce from nuclear power stations, solar installations, micro hydro plants, the Severn Barrage and, possibly, in-situ lean-burn
underground gasification of coal.
Engineers tasked with creating more efficient, lean-burn
combustors typically use high-power pulsed lasers for spectroscopic combustion analysis.
That's one of the reasons why the Verso-S, in this country at least, runs purely on petrol power via a lean-burn
system has also been added, boosting fuel economy by 20%(3) over the previous model(4) to deliver a combination of powerful acceleration and outstanding fuel economy.
will also reduce NOx emissions as part of the drive to meet Advisory Council for Aeronautics Research in Europe targets of a 60% cut by 2020.
Thanks to multiple injections, it is for the first time possible to extend this lean-burn
operating mode to higher rpm and load ranges too.
But, the more important point of this latest technology is that it could allow car manufacturers to consider using lean-burn
engines in petrol cars, as they try - or are forced by legislation - to increase the fuel economy of their vehicle fleet.
The new cars mark the introduction of a new family of lean-burn
engines from Ford which are claimed to be 20% more economical.
The company uses the advantage of lean-burn
and rich-burn combustion technology, depending on the emissions levels to be attained.