Stage IIIA requirements

24 April 2008

Start date Net power (kW) Guide: Approx. excavator operating weight (t) CO (g/kWh) NOx + HC (g/kWh) PM (g/kWh)
Jan 2006 130 – 560 25 – 130 3,5 4,0 0,2
Jan 2007 19 – 37 2 – 5 5,5 7,5 0,6
Jan 2007 75 – 130 15 – 25 5,0 4,0 0,3
Jan 2008 37 – 75 5 – 15 5,0 4,7 0,4

Engines are Such a Fundamental Part of a construction machine's performance, that new equipment introductions up to early 2008 can be expected to be almost totally dictated by the introduction of each phase of the Stage IIIA emissions laws.

For example, this year sees the new laws applied to the 130 to 560 kW powerband. Being the larger class of engines, these tend to be fitted in big earthmoving machines – typically 25 to 130 tonne excavators, 15 tonne+ wheeled loaders and motor graders, 20 to 60 tonne capacity haulers, D6 class dozers and above, and so on. Expect to see plenty of new machines in these categories and classes at April's Intermat exhibition in Paris.

This table also illustrates some interesting points about the limits of the machine types that the law impacts upon. At the top end of the spectrum, there is no legislation on 560 kW+ engines, such as those that are found in large mining equipment. Similarly, machines with an engine less than 19kW are not affected, such as those found in small mini excavators around the 1,5 tonne class or less.

Another point to emphasise is that these laws apply only to compression ignition (diesel) engines used in off-highway machines. There are other European laws for spark ignition (petrol) engines, and for other diesel engine applications, including on-highway vehicles, marine engines and railway locomotives.

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