There's something almost comedic about regulators amending a rule for engines that don't exist yet. The heavy-duty NOx standards finalized back in December 2022 don't even take effect until model year ...

The proposal doesn't change the tougher NOx standard, but it would revise key implementation requirements that manufacturers ...

The long-awaited proposed changes in a set of EPA heavy-duty truck regulations that loosely is referred to as “the NoX rule,” ...

EPA will proceed with stricter NOx limits for 2027 heavy-duty trucks but told American Trucking Associations it may revise warranty and useful life requirements. ATA said the planned adjustments could ...

In this video, we explain car engine sensors, detailing their functions, operations, locations, and effects of malfunctions.

Nitrogen oxides, poisonous gases that contribute to acid rain and suffocating smog, are found in the fumes of diesel cars like the ones Volkswagen has admitted to fitting with emissions-cheating ...