Upgrades to Cat’s C9.3B engine bring greater power density, packaging flexibility

At Bauma last week, Caterpillar took the wraps off a retooled big engine, the C9.3B that delivers 335 to 455 horsepower and a whopping 1,535 foot pounds of torque.

The new output stats are an 18-percent improvement over its predecessor, and the engine is also 209 pounds lighter.

The company also reduced the size of the aftertreatment system on this six cylinder engine by 30 percent.

The engine mounted aftertreatment uses a lightweight diesel oxidation catalyst (DOC), diesel particulate filter (DPF) and selective catalytic reduction (SCR) technology to meet current Tier 4 Final emissions standards in the United States and the Stage V emissions standards due in Europe by 2019.

The flexible design of the engine reduces installation time and cost, according to Cat, in addition to making service easy and accessible. Engineers simplified the air system to allow for smaller radiator packaging.

Multiple versions of the aftertreatment package will be available to meet customer requirements.