Hyundai showcases downsized turbocharged engines, 7-speed transmission

(October 3, 2014) Hyundai is showcasing two new turbocharged gas direct injected (T-GDI) engines at the Paris Motor Show.  Both engines — 1.0-liter and 1.4-liter units which are part of a new generation of engines from the Kappa family — meet growing demand for small capacity, turbocharged engines to reduce fuel consumption and CO2 emission without compromising on driving pleasure.

In addition, Hyundai is premiering its first seven-speed dual-clutch transmission, fitted into the i30 CNG concept car, which contributes to improved fuel efficiency.

The new Kappa 1.0-liter T-GDI is the first of a new generation of small turbocharged gas engines, offering enhanced performance, driving pleasure and efficiency. The 998 cc three-cylinder unit is based on the established Kappa 1.0 liter MPI engine, carrying various enhancements and new technologies, including direct petrol injection and a small, single-scroll turbocharger.

The 1.0 liter T-GDI engine, which was developed at Hyundai’s European Technical Centre in Rüsselsheim, Germany, is able to produce up to 120 horsepower and 127 pound-feet of torque and will enhance the New Generation i20 engine lineup in 2015.

The new engine comes with an electronically-controlled waste-gate to optimize flow and improve low-end torque and throttle response. The unit features a six-hole GDI injector, pressured to a higher-than-average 200 bar, securing a clean combustion and improving fuel economy and emissions to fulfill Euro 6c emission standards, three years ahead of their introduction in 2017.

The second engine to be showcased is the Kappa 1.4-liter T-GDI unit. This newly developed 1352 cc four-cylinder turbocharged gas engine is significantly lighter than its predecessor, the Gamma 1.4-liter engine. At only 192 pounds, the engine’s base weight has been reduced by 31 pounds compared to the Gamma 1.4-liter unit. As well as being lighter and smaller, it features greater efficiency and power.

The new 1.4-liter T-GDI engine incorporates a sophisticated high-pressure single-scroll turbocharger integrated within the exhaust manifold to improve operational efficiency. The relocated and re-engineered turbo means throttle response time and low-end torque have improved. The new design injects fuel directly inside the cylinder, improving combustion rates for better power and fuel efficiency.

The Kappa 1.4-liter T-GDI engine provides 115 horsepower in CNG mode, delivering 152 pound-feet of torque.

Another premiere at the Paris Motor Show 2014 is the seven-speed dual-clutch transmission (7DCT), showcased in the i30 CNG concept car. It is the first time that Hyundai has presented a dual-clutch transmission with seven gears, combining the benefits of both automatic and manual transmissions. The 7DCT provides an improvement in fuel consumption and CO2 emission compared to a conventional six-gear automatic transmission, while acceleration performance also improves.

The 7DCT consists of two dry clutches and an actuator for each clutch, with engine power transferred independently into the odd and even gear train, ensuring it is ready to shift into the next gear without any torque interruption. For optimized responsiveness the electric motor-driven actuator is applied, while the external damper improve the noise vibration harshness during driving.