Navistar’s new International S13 Integrated Powertrain, designed in close collaboration with the Traton Group for the North American market, is the last internal combustion engine powertrain the ...

A purge valve is a vital component of a vehicle's evaporative emission control (EVAP) system. Its function is to control the flow of fuel vapors from the fuel tank and evaporative canister into the ...

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 ...

Volvo Trucks’ CARB 24-compliant engine features an advanced emission control system integrated with a fully serviceable linear exhaust aftertreatment system. Volvo Trucks North America has announced ...

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 ...

The U.S. Environmental Protection Agency on Dec. 20 finalized what it called “the strongest-ever national clean air standards to cut smog- and soot-forming emissions from heavy-duty trucks beginning ...

Volvo on Thursday added a third D13 engine model to its product line, the newest one compliant with California Air Resources Board (CARB) 2024 Omnibus regulation requirements for low nitrogen oxide ...

To most of us, emission control systems are some sort of "black art" devices that have been forced upon us to rob performance and ruin gas mileage, but that's really not the whole story. Air pollution ...