Nearly all the major equipment manufacturers—including Caterpillar, Case/New Holland/Kobelco, Komatsu, Deere, Volvo, Terex and engine specialist Cummins—plan to use a combination of exhaust-gas recirculation (EGR) and a diesel particulate filter (DPF), to meet Interim Tier 4. Image: CNH EGR + DPF Photo: CNH SCR Photo: JCB Related Links: Next Round of Federal Regulations Has Suppliers Retooling Clean Diesel The Future of Clean Diesel Is … Gasoline? The other major technology for Interim Tier 4 is selective-catalytic reduction (SCR), which converts nitrogen oxides to harmless nitrogen and water by dosing exhaust fumes with small amounts of diesel exhaust fluid, an aqueous
The market is generally healthy and steadily growing, and margins are up for large specialty contractors. Further, advances in design tools and owner demand for collaboration are giving subcontractors a seat at the table early on in projects.