Topic summary

Camless

Camless

Extracted from the Wikipedia article Camless piston engine.

Emissions

Camless engines are able to produce fewer emissions than their equivalent camshaft counterparts because they are able to more precisely control the combustion procedure, allowing for more complete combustion of all hydrocarbons. The computer is able to sense when not all of the fuel is being consumed and immediately relax valve timings to supply less fuel to a cylinder. The ECU can constantly adjust valve timing, height, and fuel/air mixtures to optimize efficiency for a given RPM/torque load. It can sense when there is a high amount of NOx and SOx emission and change the timing to make the exhaust gas hotter or cooler. Since the engine is run electronically and not mechanically, camless engines can be updated to meet new emission regulations without mechanical modifications.