DENTON, Texas — Peterbilt has rolled out its new CARB low nitrogen oxide (NOx) compliant PACCAR MX-13 engine in the Models 579, 567 and 589.
According to a news release, this engine meets the CARB Omnibus Regulation and features redesigns of internal hardware and the aftertreatment system to effectively reduce 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 low NOx compliant PACCAR MX-13 engine combines a diesel powertrain with next-generation technology. It is available with a flat torque curve providing performance across a wider range of RPMs for drivability and fuel economy. This includes a high performance 510-horsepower rating with 1,850 pound-feet of torque and an efficiency focused rating of 455-horsepower and 1,650 pound-feet of torque between 900 and 1,325 RPM.
“PACCAR MX engines were engineered for reliability and fuel economy in a comfortable, quiet and powerful package. The new CARB low NOx PACCAR MX-13 engine offers the same great features with a reduced carbon footprint for our customers,” said Scott Newhouse, Peterbilt chief engineer.
Peterbilt Models 579, 567 and 589 with the CARB low NOx compliant PACCAR MX-13 engine are available for orders now.
For more information, click here.
Born in Pine Bluff, Arkansas, and raised in East Texas, John Worthen returned to his home state to attend college in 1998 and decided to make his life in The Natural State. Worthen is a 20-year veteran of the journalism industry and has covered just about every topic there is. He has a passion for writing and telling stories. He has worked as a beat reporter and bureau chief for a statewide newspaper and as managing editor of a regional newspaper in Arkansas. Additionally, Worthen has been a prolific freelance journalist for two decades, and has been published in several travel magazines and on travel websites.
