Peterbilt has launched the updated PACCAR MX-13 engine, now meeting California Air Resources Board (CARB) low nitrogen oxide (NOx) regulations, available in Models 579, 567, and 589.
In a recent release, Peterbilt confirmed that this engine complies with CARB Omnibus Regulation standards. To achieve this, the engine has undergone extensive redesigns, particularly in its internal hardware and aftertreatment systems, to significantly lower NOx emissions.
“The larger volume aftertreatment system includes an innovative compact twin assembly featuring a 48-volt generator located in the flywheel housing, and an electrical heater located in the inlet to provide lower NOx output,” the news release states. “The internal hardware now features a larger volume mixer, longer selective catalytic converter (SCR) and an improved and more durable NOx sensor design with increased longevity for improved uptime. These features allow Peterbilt customers to achieve increased engine efficiency and fuel economy while continuing to meet stringent CARB emissions regulation.”
The CARB-compliant PACCAR MX-13 engine merges a diesel powertrain with sophisticated technology. Its flat torque curve offers enhanced performance across a wider RPM range, improving both drivability and fuel efficiency. The engine is available in a high-performance variant, delivering 510 horsepower and 1,850 pound-feet of torque, as well as an efficiency-centric option with 455 horsepower and 1,650 pound-feet of torque, optimal between 900 and 1,325 RPM.
“PACCAR MX engines are designed to provide reliability and fuel efficiency in a quiet, comfortable, and powerful package. The new CARB low NOx PACCAR MX-13 engine incorporates all these benefits while also reducing the carbon footprint for our customers,” said Scott Newhouse, Peterbilt’s chief engineer.
Customers can now place orders for Peterbilt Models 579, 567, and 589 equipped with the CARB-compliant PACCAR MX-13 engine.
For further details, click here.
Source: The Trucker
Image: Peterbilt
