Cummins Inc. announced the launch of its Environmental Protection Agency (EPA) 2021 emissions-compliant X12 and X15 series engines. These heavy-duty diesel engines from Cummins were built on the architecture of their EPA 2017 versions and are designed for on-highway Class 8 trucks.
Cummins currently provides an oil drain interval (ODI) of 75,000 miles for operators achieving 7 or more MPG with the X12 and X15 Efficiency engines. In 2021, customers averaging between 5 and 7 MPG will see their ODI with the EPA 2021 X15 Performance series engine extended by 10,000 miles. To further increase uptime for customers, Cummins has matched the service schedule for both the fuel filter and oil changes on both the X12 and X15 series products, so customers won’t have to plan maintenance separately.
The Cummins X15 Efficiency Series has demonstrated up to 3.5% better fuel economy compared to the 2019 product, according to the OEM. In 2021, X15 Efficiency series customers with EX ratings (require Endurant HD transmission and GPS look-ahead data) stand to gain an additional 1.5% in fuel economy. Those who require more than 500 HP and go with an X15 Performance series can get up to 2% improved fuel economy compared to the EPA 2017 version. X12 users will also see improvements, with an up to 2.5% potential gain in base engine and a possible 1.5% further improvement with EX ratings, which will be available to the X12 in 2021.
Features like SmartCoast, Predictive Cruise Control and Predictive Road Speed Governor will be available for customers with automated manual powertrains in 2021, the company said, noting that these features were previously unavailable above 500 HP.