15.5 Wheels Isuzu

Seen at Samoter

Visitors go to the Italian city of Verona to see its historical heritage including famous Roman Amphitheatre - The Arena - and to check out its connections to the Shakespeare play Romeo and Juliet, which was based in the city. But every three years there is another attraction - the Samoter construction equipment exhibition. And this year the show was particularly important as it provided the European launch pad for a significant number of machines featuring the latest Stage IIIB emissions compliant engines.

From the beginning of this year, new machines produced with engines rated at more than 129kW (173hp) that are sold in North America and Europe have to comply with the latest emissions standards - ‘Tier 4 Interim’ and ‘Stage IIIB’ respectively. These require a 90% reduction in particulate matter (PM) compared to the previous Tier 3 / Stage IIIA standards as well as a 50% drop in nitrogen oxides (NOx). This affects some of the larger wheel loaders, excavators and articulated haulers and dumptrucks that are used for waste handling operations.

To meet these emission reduction requirements manufacturers have adopted different solutions. Some have developed high-efficiency combustion systems, while others have added exhaust after-treatment and/or a DPF (diesel particulate filter). After-treatment technology includes exhaust gas recirculation (EGR) and selective catalytic reduction (SCR).

At Samoter, Volvo Construction Equipment unveiled examples of its new Stage IIIB emissions compliant D-Series excavators, F-Series articulated haulers and G-Series wheel loaders. The company has chosen to use EGR and DPF regeneration on its new machines.

Volvo’s active-type DPF temporarily holds the particulate matter and then incinerates it, further reducing emissions. This process is conducted, it is claimed, without any loss of performance or operation. The service interval for the Volvo DPF is 4500 hours and the company has organised a Reman service exchange programme for the item.

The first three Volvo wheel loaders to ascend from F- to G-series include the models L150G, L180G and L220G with bucket capacity ranges of 4.0m3 to 6.8m3, 4.4m3 to 7.8m3 and 4.9m3 to 8.2m3, respectively. As well as being fitted with the latest Volvo Tier 4i/Stage IIIB compliant engines, these three loaders also have stronger hydraulics. They are claimed to provide a 20% increase in lifting force, a 10% improvement in breakout force and better fuel efficiency.

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