Decrypting Hyundai’s New Powertrain Option On Venue

Technology May 2019 Hyundai Motor India Ltd HMIL Decrypting Hyundai Venue Powertrain
Decrypting Hyundai’s New Powertrain Option On Venue

Scheduled for launch on May 21, 2019, Hyundai Motor India’s latest SUV – the Venue – promises to excite the market that has experienced subdued performance in the last few months. While the company is pitting it as the country’s first connected SUV, there’s much more in store for customers to take note of. In this feature, we focus on the debutants – the new Kappa 1.0 l T-GDI petrol engine and the 7-speed dual clutch transmission.

Projected as India’s first connected SUV, the Hyundai Venue is creating quite a flutter in the market. Unveiled aboard a cruise ship on the Arabian Sea alongside its global preview at the 2019 New York International Auto Show, the Venue opened with 2,000-plus bookings on the very first day the company announced bookings open, almost three weeks before the smallest SUV from Hyundai Motor India’s stable hits the roads on May 21, 2019. So what makes the Venue so exciting to consumers – the segment, the connected vehicle proposition, styling or the powertrain?

We will get to drive the vehicle by May-end, and will bring you a detailed feature on the vehicle’s performance and the connectivity platform. In this feature though, we focus on the powertrains on offer, particularly the new Kappa 1.0 l T-GDI petrol engine and the 7-speed dual clutch transmission, which are making their debuts on Hyundai models in the country.

In addition to the Kappa 1.0 l T-GDI petrol, the Venue gets the 1.2 l petrol as well as the 1.4 l diesel engines, while there are two manual transmissions – a 5-speed and a 6-speed – to go with the 7-speed DCT. Altogether, the Venue will be offered in three engine and three transmissions options.

KAPPA 1.0 L T-GDI PETROL ENGINE

The Kappa T-GDI 1.0 l, three-cylinder turbocharged engine isn’t entirely new. This downsized engine was first introduced in 2015 by Hyundai’s sister firm, Kia Motors at the Geneva Motor Show on the Kia cee’d GT Line. Hyundai too offered this engine on the i20 the same year. The power and torque ratings of the engine – 118 hp of power and 172 Nm of torque – have been retained since the time of its launch. The engine has been developed at the Hyundai Motor Group’s R&D centre in Namyang, South Korea.

As a technology, GDI, or gasoline direct injection, is considered to be one of the most efficient future petrol engine technologies. Unlike multipoint fuel injections, GDI allows direct injection of fuel into the combustion chamber, which aids efficiency and performance.

The Kappa 1.0 l T-GDI engine is a very compact unit, which has been achieved by integrating the exhaust manifold within the cylinder head. This allows efficient cooling using its cylinder head water cooling system. As a result, the catalyst warms-up faster, leading to improved real-world fuel consumption and emissions.

For better fuel combustion, Hyundai engineers designed a divided cooling passage between the cylinder head and block. The GDI system injects fuel at a very high pressure of 250 bar, thereby improving torque, power and fuel economy. The electric waste gate actuator (EWGA) controls the boost air volume with an electric motor, thus delivering refined power, whereas the two-stage oil relief pump provides better lubrication and improves the durability of the engine.

The EWGA can control boost pressure more accurately and faster in a wider engine operating area compared with a conventional mechanical waste gate actuator. As a result, it contributes to improved engine response and fuel efficiency.

The Venue’s new Kappa 1.0 T-GDI petrol engine and the 7-speed dual clutch transmission are making their debuts on the Hyundai models in the country

7-SPEED DUAL CLUTCH TRANSMISSION

Hyundai has paired the 1.0 l T-GDI petrol unit on the Venue with an in-house developed 7-speed dual clutch transmission as well as a 6-speed manual transmission. The DCT unit is claimed to be highly efficient and has least torque transfer interruption, while shifting gears. The company also claims that the transmission has been subjected to rigorous durability tests for ensuring high gear strength and better clutch friction materials at different driving conditions.

The DCT unit combines the advantage of both a manual and automatic transmissions. DCT helps enhance the fuel economy by 10 % and acceleration performance by 6 %. The dual clutch unit uses an electric actuator that is governed by a separate control unit for shifting of gears and operation of clutch. The electric actuator assists faster response and smooth shifting.

DCTs are globally becoming popular because they offer faster gear shifts – within a few hundredths of a second. Compared to a 6-speed automatic transmission, Hyundai’s 7-speed DCT is claimed to provide 20 % higher fuel efficiency and lower CO2 emissions.

The DCT is composed of two input shafts with an optimised gear ratio. Automatic shifting is achieved by optimal control of the transmission control unit (TCU) during different driving conditions. Gear shifting is accomplished through independent gear trains for odd and even gear shafts. The gear actuator has a unique design layout composed of two separate shift mechanisms. The gear actuator of the 7-speed DCT has a faster shifting time than a 6-speed.

CONCLUSION

The combination of the Kappa 1.0 l turbocharged GDI engine with the 7-speed DCT promises to offer customers efficiency improvement to achieve lower CO2 emission and better fuel economy. While this engine will also be paired with a 6-speed manual transmission, it is the combination with the DCT that sounds much more exciting. We’ll get the real feel of the vehicle only when we drive it later this month, but Hyundai has taken a strong leap of faith with the introduction of these two powertrain options.

TEXT: Deepangshu Dev Sarmah