Theory indicates that because of greater mass airflow, a supercharged, turbocharged, or even nitrous oxideinjected engine might benefit from larger exhaust valves and ports. Real-world engines with ...

When two equal turbochargers work independently, it's parallel. If a small turbocharger operates at lower rpm, then a larger one at higher rpm, it's sequential.

The engines that power the vehicles we drive are exceptional machines. They're capable of generating insane amounts of power in a relatively confined space, and they can generally be expected to ...

Most enthusiasts think of the exhaust as starting from the manifold back, but the exhaust system really starts at the exhaust valve. A small increase in exhaust port flow, especially with stock ...

Diesel engines have a wide range of industrial applications, including on- and off-road equipment used, for example, in the mining, railroad, construction, and transportation industries. The use and ...

Manufacturers are busy rolling out solutions to meet Final Tier 4 off-road requirements for diesel engine exhaust emissions, and the technologies look very familiar to those already in use in the ...

Modern medium- and heavy-duty trucks have sophisticated exhaust aftertreatment systems that can include a diesel oxidation catalyst (DOC), diesel particulate filter (DPF) and selective catalytic ...