Turbochargers

Turbochargers

A turbocharger is one of the components which enhance the combustion engine power rating. It comprises a turbine (hot part), centre housing and compressor (cold part). Their common element is the turbocharger shaft connecting all the internal components, together with which it forms the turbocharger core. The exhaust gases coming out of the exhaust manifold (turbine) drive the turbine rotor, which simultaneously excites the compressor rotor (centre housing) which sucks in and compresses huge portions of air which is later directed through the intake manifold to the engine (compressor).

CHRA

CHRA

The Centre Housing Rotating Assembly (CHRA), i.e. the core, is the turbocharger’s “heart” which pumps an additional amount of air to the engine, under considerable pressure. It consists of several elements. The major ones include a correctly balanced rotor and compression wheel, i.e. the rotating assembly. This assembly is mounted on slide bearings in the housing.

Rotors

Rotors

A rotor is one of two most important turbocharger components. It consists of a wheel and shaft. Exhaust gases drive the rotor wheel which then sets the compression wheel mounted on it in motion via a bearing-mounted shaft.