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A twin-scroll turbocharger for the Hyundai 1.6l Turbo-GDI engine


BorgWarner supplies its turbocharging technology for Hyundai’s new 1.6-liter turbocharged gasoline direct injection (T-GDI) engine. Available for the Veloster Turbo passenger car, the turbocharged engine features a maximum output of 150 kW (204 hp), an increase of 46 percent compared with Hyundai’s standard 1.6-liter GDI engine. The Veloster Turbo has also been available in Europe since October 2012.

“Combined with Hyundai’s direct-injection technology, BorgWarner’s turbocharging expertise helps achieve a fuel efficient and responsive engine for an exhilarating driving experience,” said Frederic Lissalde, President and General Manager, BorgWarner Turbo Systems. “We are very pleased to expand our successful relationship with Hyundai Motor Company through our supply of advanced turbocharging technology for gasoline engines.”

BORGWARNER HYUNDAI 1.6l gasoline direct injection engine

To develop a state-of-the-art engine featuring low-end torque, responsiveness, instantaneous power delivery and improved fuel economy, Hyundai matched BorgWarner’s K03 twin scroll turbocharging technology with its GDI system. Compared with a single scroll turbocharger, twin scroll turbocharging recovers more energy from the exhaust gas and improves responsiveness even at low rpm. BorgWarner’s twin scroll turbocharger separates the exhaust gases of the cylinders and minimizes parasitic back pressures. BorgWarner further optimizes the exhaust gas flow to the turbine wheel with an optimized channel design. Torque of 270 Nm is available over a wide engine speed range, from 1,750 rpm and up to 4,500 rpm. In addition, BorgWarner integrated the exhaust manifold into the stainless steel turbine housing to reduce size and weight while optimizing heat energy recovery for better efficiency.

Source: BorgWarner
Romain’s opinion:

Turbocharger technology is getting more and more spread on markets and the growth is especially important for gasoline engines. Classic single scroll waste-gated turbochargers are the more used on gasoline engines so far, but do you think that twin-scroll or even variable geometry turbine technologies will lead the gasoline engines turbocharger market?


  1. Etienne06-12-2013

    What are the usual speeds of turbochargers, and is there still on this point some improvement margin?

    • Romain Nicolas06-13-2013

      Today turbochargers can rotate up to 300 000 rpm but is generally used arounf 200 000 rpm. This mainly depends on the material and manufacturing quality of the turbocharger and of its bearings. I don’t know if we can go any further in rotation speed increase. You might ask that for turbomatching with very small gasoline engines?

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