Turbine Housings

Increased Demand For Smaller, Turbocharged Engines

The turbine housing is a significant component of a turbocharger assembly. The turbocharger is positioned downstream of the manifold within the exhaust system, and is driven by hot exhaust gases exiting the engine through the exhaust manifold. As the hot exhaust gases expand through the turbine, it drives a shaft connected to the compressor. This rotation of the compressor impeller draws cool air into the compressor housing and forces it into the intake manifold under higher pressure (boost). By raising the pressure of the intake air, and thus the density of the intake charge, the turbocharger can help to achieve higher power output for a given engine displacement. This allows for the use of smaller and lighter engines, which can result in improved vehicle performance and potential improvements in fuel economy and total emissions output.

Wescast’s European Business Unit currently supplies cast turbine housings to many of the largest turbocharger systems manufacturers such as Mitsubishi Heavy Industries, BorgWarner and Honeywell Turbo Technologies. The European market leads the world in its use of smaller gas and diesel turbocharged engines; however, oil price instability and pending legislative changes may soon open the North American market for greater penetration of these engines. Wescast’s global footprint allows us to be positioned to offer these products with flexibility where demand is needed.