Following more than five years of development alongside commercial truck sibling brands Scania, MAN, Volkswagen Caminhões e Ônibus and RIO, the all-new International S13 Integrated Powertrain was born.
International Truck on Tuesday unveiled its new in-house designed and engineered powertrain – the first new International on-highway product since regulators approved Volkswagen subsidiary Traton Group's takeover of Navistar last July.
When Paccar debuted its 12-speed Eaton-engineered automated transmission in 2017 for its Kenworth and Peterbilt models, Navistar became the lone major North American truck OEM without a vertically integrated powertrain. That same year, then-Volkswagen Truck & Bus formally took a more than 16% ownership stake in Navistar, and following more than five years of development alongside commercial truck sibling brands Scania, MAN, Volkswagen Caminhões e Ônibus and RIO, the all-new International S13 Integrated Powertrain was born – “integration built on collaboration,” said Michael Grahe, Navistar executive vice president of operations.
Deploying a modular design approach that allows for wide customization, the S13 Integrated Powertrain consists of three distinct components: an engine, a transmission and an aftertreatment system – all designed and developed concurrently to ensure compatibility and integration between the systems.
Designed with selective catalytic reduction (SCR) technology as the primary emissions reduction technology in mind, the S13 engine has no exhaust gas recirculation (EGR) cooler and flows 100% of the exhaust to the turbocharger in normal engine operating conditions.
“We see the future as predominantly a 13-liter market because it offers the best weight to power ratio,” Grahe said, adding International's 12.4-liter A26 engine will eventually be phased out.
Navistar expects that half of all its new vehicles sold by 2030 will be zero-emission before hitting 100% in 2040.
