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CNH Construction marketing director Jean-Patrick Yekpe has highlighted the money-saving potential of Case Construction Equipment’s new midi-excavators, unveiled at bauma 2013. The Tier 4 Final requirements of the CX75C SR and CX80C have been met, says Yekpe, through the use of cooled exhaust gas recirculation (CEGR) combined with a diesel oxidation catalyst system. “When the soot is coming out of the engine as smoke and touches the platinum inside the engine you get an oxidation, and as a consequence of thi

Cummins has taken a major leap forward with engine design as it ditches cooled exhaust gas recirculation for its newest heavy-duty six-cylinder engine platform launched at bauma – the 12-litre QSM12. As its Tier 4 Final/Stage 4 engine solution in the 250-383kW sector, the QSM12 benefits from higher efficiency air handling and an advanced in-cylinder combustion process, allowing a return to using a straightforward wastegated turbocharger.

Deutz used bauma to show two hybrid projects it is currently working on, including a hybrid drive for excavators and an innovative start/stop system for compact wheeled loaders. The hybrid drive is based on using a 160kW Deutz TCD 6.1 L6 engine with an integrated motor-generator. The engine is linked to an on-board electrical power network that uses super capacitors, a power inverter and an electric slew motor, allowing components to harvest, store and use electrical energy, specifically for slewing functio

Cummins used bauma to reveal the QSF3.8 – a four-cylinder engine platform delivering a power range of 63-89kW – which is ready to meet Stage IV/Tier 4 Final emissions regulations. Using only SCR for its exhaust after-treatment process, the QSF3.8 avoids the need for either DOC or DPF as a result of using a high-efficiency catalyst to convert oxides of nitrogen at lower exhaust temperatures while requiring only low doses of DEF, said the company.

Perkins has completed its line-up of four-cylinder engines for Tier 4 Final/Stage IV with the introduction of the 854F-E34TA – the latest in its 800 Series range. The compact, four-cylinder, 3.4litre engine incorporates specially developed SCR technology for the first time. Packaged separately from the DOC module, it can be mounted in either a horizontal or vertical position, giving OEMs of compact machinery greater installation flexibility in the engine bay.

Hatz’s Diesel’s 1D81 Hydro concept has been developed to offer a low noise level solution for applications using single-cylinder diesel engines. Still at prototype stage, the 667cc and 772cc capacity single-cylinder engine is a new variant of an existing Hatz engine design. As such, it uses common components from the Hatz range, but it differs with an all-new cylinder block and cylinder head design that includes a water jacket, allowing liquid cooling to be introduced.

Caterpillar’s industrial engines division is using the C7.1 as a common engine platform as a replacement for the C6.6 as it meets Tier 4 Final/Stage IV emissions regulations. It means the 7.1litre six-cylinder C7.1 offers power ratings from 116kW to 225kW in either single turbo or series turbo configurations, and adds an SCR catalyst and diesel exhaust fluid dosing system as part of the existing exhaust after-treatment process.

Hatz has revised its three and four cylinder L and M series air-cooled engine packages to comply with emissions regulations by including a cooled EGR system, DOC and DPF with active regeneration. The exhaust after-treatment package can be remote-mounted, said Hatz, and brings a 2dB(A) reduction in exhaust noise to the air-cooled engine.

Caterpillar has re-engineered its 7litre C7.1 engine to create a power unit more suited to those markets with lesser-regulated emission controls. Meeting China Stage II emission regulations – equivalent to EU Stage IIIa/EPA Tier 3 – the C7.1 uses high-pressure electronic common rail fuel injection and a wastegated single turbocharger, to achieve a power output of up to 205kW.

Hatz has boosted diesel engine efficiency with an all-new four-cylinder 2litre platform that combines low weight with low fuel consumption and meets Tier 4 Final/Stage IV emissions regulations without the need for a DPF. Called the 4H50TIC, the new engine uses two-valve cylinder head design to cut frictional losses, while opting for lower injection pressures of 1,800bar to contribute towards improved fuel efficiency.