Clean air rules were designed to protect the environment from harmful car emissions, but they had a surprising secondary ...

In the past two months we've covered most of the emission systems that have appeared on recent automobiles. This month we'll conclude our discussion of these systems with those devices designed to ...

One of the most important parts of your car's exhaust system, the catalytic converter should last for the vehicle's lifespan, ...

Last month we began our discussion of emission systems by examining various crankcase and fuel vapor control devices, along with throttle and carburetion equipment aimed at reducing automotive exhaust ...

For our industry, the year 2027 means meeting lower NOx standards while using less fuel. Under old diesel design rules, this would be quite problematic because NOx forms at the high cylinder ...

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 ...

The Engine Technology Forum’s new online hub aims to provide fleets, policymakers, and equipment owners with fact-based information about selective catalytic reduction technology, diesel ...

The Positive Crankcase Ventilation (PCV) system rarely gets attention until something goes wrong, but mechanics are ...

Hondas are known for their reliability, but like any other complex machine, they can run into the occasional issue. One of these is the dreaded "Check Emission System" or "Emissions System Problem" ...

California Attorney General (AG) Rob Bonta and the California Air Resources Board (the Board) have reached a $46 million agreement with engine manufacturer Cummins Inc. to settle alleged violations of ...