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New guidance allows engine makers to replace problematic DEF sensors with NOx-based systems, aiming to reduce unnecessary derates and downtime caused by failures in the sensors designed to monitor diesel exhaust fluid on trucks.
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A recent EPA reference mixed up NOx and nitrous oxide. It’s an easy mistake. Just not one you expect to see in emissions policy. Let’s look at the difference.
Read More →The Environmental Protection Agency is asking diesel engine makers to provide information about diesel exhaust fluid system failures as it considers changes to emissions regulations.
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The Environmental Protection Agency said California can’t enforce its Heavy-Duty Inspection and Maintenance Regulation, known as Clean Truck Check, on vehicles registered outside the state. But California said it will keep enforcing the rule.
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The Trump administration has announced it will no longer criminally prosecute “diesel delete” cases of truck owners altering emissions systems in violation of EPA regulations. What does that mean for heavy-duty fleets?
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Volvo Trucks has introduced new stop\start technology for its diesel engines in Europe.
Read More →New guidance to engine manufacturers will reduce "derating," an automatic trigger forcing diesel engines to operate at a reduced capacity when the emissions system runs out of diesel exhaust fluid or there's a DEF-related fault.
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Climate legislators overreached badly with the Advanced Clean Fleets rule. And now they’re paying a heavy price for their arrogance.
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Despite the current market uncertainty, Brian Antonellis, senior vice president of fleet operations for Fleet Advantage, thinks some fleets will prebuy Class 8 trucks ahead of the 2027 model year.
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The Western States Trucking Association is challenging a deal that truck and engine makers made with California to continue to meet the state's truck emissions rules even if it lost the federal authority to implement those rules
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