Nowadays, many car models feature badges such as ‘1.8T’ or ‘2.0T’ on the rear; the ‘T’ here indicates that the vehicle is fitted with a turbocharged engine. Fig. 1 A turbocharger (Fig. 1) utilises the exhaust gases from the engine to drive the turbine (located within the exhaust manifold); the turbine, in turn, drives the coaxial impeller situated within the intake manifold. The impeller compresse...
I. Working Principle of the Exhaust Gas Turbocharger The turbocharger comprises three parts: the turbine end (exhaust side), the compressor end (intake side) and the centre section (bearings, oil cooling and oil passages), which are rigidly connected on the same axis. 1. Exhaust-driven turbine High-temperature, high-pressure exhaust gases from the engine’s combustion process surge from the exhaust...
In 2026, with the full implementation of the ‘trade-in’ policy, the ageing of the vehicle fleet and the automotive industry’s transition towards new energy vehicles, older vehicles are driving a profound structural shift in the demand for automotive parts through two pathways: ‘phasing out’ and ‘life extension and maintenance’. The specific drivers and impacts are as follows: I. Pathways for phasi...