In a newly animated video, Nissan has detailed the two-stage turbocharger found in the new Nissan Titan XD‘s Cummins 5.0-liter V8 diesel engine. The Cummins M²™ Two-Stage Turbocharger is capable of working at both low and high engine speeds. The series sequential turbocharging system involves two differently sized turbochargers for providing a small turbo for low air flow requirements and a large turbo for high air flow.
Unlike regular diesel engines which usually have turbo lag, this engine provides sufficient torque throughout the RPM range. The small turbo’s low inertia provides good short-term response while the large turbo maintains power at higher engine speeds. The air flow between the two turbochargers is controlled by the M² system from Cummins Turbo Technologies. This sytem uses rotatory valve to open ports that perform the bypass or waste-gate functionality and provide exhaust after-treatment thermal management.
More information is available in the press release below.
ANIMATION: NISSAN TITAN XD’S CUMMINS 5.0L V8 TURBO DIESEL TWO-STAGE TURBOCHARGER – Press Release
NASHVILLE, Tenn. – When the covers were pulled off the 2016 Nissan TITAN XD full-size pickup at the 2015 North American International Auto Show in January, it was really two debuts in one with the all-new Cummins 5.0L V8 Turbo Diesel engine being shown for the first time too.
The Cummins 5.0L V8 Turbo Diesel in the upcoming 2016 Nissan TITAN XD features a unique Cummins M²™ Two-Stage Turbocharger is configured to work well at both low and high engine speeds. The series sequential turbocharging system, involving two differently sized turbochargers, effectively provides a small turbocharger for low air flow requirements and a large turbo for high air flow. The small turbo provides the advantage of good transient response due to its low inertia and the large turbo maintains power at higher engine speeds. This helps eliminates turbo lag, providing a continuous delivery of peak torque through the RPM range.
In order to control the air flow between the two turbochargers, the new M² system from Cummins Turbo Technologies uses a patented rotary valve to open ports that perform the bypass or waste-gate functionality and provide exhaust after-treatment thermal management.
“We are excited to have Cummins as a partner to launch the new TITAN XD. The Indiana-made Cummins 5.0L V8 is a perfect fit for our truck that was designed in California, engineered in Detroit, and will be assembled in Mississippi,” said Rich Miller, chief product specialist, TITAN, Nissan North America, Inc. “The 2016 TITAN reflects the passion that both Nissan and Cummins employees have toward their heritage as truck people. We collectively know what we would want in our own truck and pulled together all of those traits into one unbeatable package that we are thrilled to finally show the world.”