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New Cat® C32B Engine Delivers High Power Density and Improved Durability
The C32B reliably delivers power up to 1200 hp (895 kW) and 4,323 lb ft (5,861 Nm) for the U.S. EPA Tier 4 final compliant version. The engine is ideal for large loaders, cranes, dredgers, hydraulic power units, paving, surface hauling equipment, trenchers, pumps, forestry equipment, compressors and bore/drill rigs, among other applications. The new C32B engine has been redesigned from the bottom up with power density and durability in mind. The new engine block is made from a strong cast-iron alloy known for its durability with internal changes made to increase structural capability. The induction hardened crankshaft includes larger journal diameters and increased bearing area to handle higher loads. The connecting rods also include larger journals to increase durability by optimizing bearing performance. An improved lube system offers a higher capacity oil pump, an oil cooler with improved performance and higher flow piston cooling jets ensuring optimal wear performance and improved durability. To improve reliability, the C32B has a thicker shim gasket than its predecessor to increase head-to-block sealing. The piston for the new C32B features increased compression height enabling increased power density for select applications. The cylinder head has been upgraded to include design features that integrate external fuel lines along with an optimized water jacket geometry to improve heat transfer. Additionally, the cylinder head components feature updated valve geometry and oil metering stem seals to reduce wear and extend cylinder head life. Its new dual sensor coolant protection feature detects potential cooling system leaks sooner to avoid costly downtime. The C32B features dual-can diesel oxidation catalyst (DOC) aftertreatment, a maintenance-free, passive aftertreatment solution that eliminates the need for thermal management or regeneration. With flexible mounting options, this technology simplifies the aftertreatment solution, helps overall package size and reduces operational costs by minimizing total fluid consumption and eliminating infrastructure requirements associated with diesel exhaust fluid (DEF). The new Cat C32B engine platform enables the use of renewable liquid fuels such as 100% HVO (hydrotreated vegetable oil). Industrial power units (IPU) configured with engine-mounted aftertreatment and cooling packs will also be available from the factory, helping to reduce installation and validation costs for original equipment manufacturers (OEMs).
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