The new low-emission Cursor 11 diesel engine from Iveco and Fiat Powertrain Technologies meets Euro-6 without EGR. The development comes from FPT Industrial's SCR (Selective Catalytic Reduction) technology, which will be introduced on the two new Cursor and Tector engine ranges for heavy-duty trucks and buses.
The new engines, equipped with FPT Industrial "SCR only" technology, will feature optimised combustion and after-treatment systems to retain a good vehicle fuel economy with enhanced environmental respect thanks to breakthrough patented control technology in which a very high NOx conversion efficiency (over 95% versus 80-85% of best competitors) is achieved.
Iveco Chief Executive Officer, Alfredo Altavilla says, "We were the first to announce our Euro VI engine technology strategy back in April 2010 at the Analyst and Investor day meeting in Turin. I said then that we would meet Euro VI standards without Exhaust Gas Recirculation. EGR as a technology has its place in the transport sector but for heavy commercial vehicles that may significantly exceed more than one million kilometres during the course of their life, the technology that reduces fuel consumption and additional operating costs to their minimum is the correct technical choice. FPT Industrial's 'SCR Only' exhaust after-treatment fulfils this important need. It is clear that Euro VI vehicles will be more expensive; technology has a price and a value. We will introduce suitably equipped vehicles when our customers ask us to do so." The Euro-6 exhaust emission regs will apply to all new heavy commercial vehicles and buses registered from 1st January 2014.
The Tector and Cursor engines have both received the latest generation of multiple event common rail fuel injection equipment with peak nozzle pressures of up to 2200bar. A new electronic control unit has been introduced to manage both engine parameters and accurate control of the after-treatment system. The new control unit has been designed to optimise packaging and to fully integrate all engine, SCR and DPF functions. For Cursor engine versions using the variable geometry turbocharger, electronic control has been introduced to optimise load response at low engine speeds and to increase the effectiveness of the engine brake. In addition, all engines will now make use of the flap type engine brake valve in order to support passive DPF regeneration and to improve engine brake performance by up to 30% compared to current Euro 6 engines.
The new generation Zeolite based compact SCR after-treatment system with all integrated components has been designed to optimise layout and minimise weight impact, resulting in a single, simple box shaped unit including DOC (Diesel Oxidant Catalyst), DPF (Diesel Particulate Filter), SCR (Selective CatalyticReduction) and CUC (Clean-Up Catalyst).