Hyundai Motor Smart Stream engine

Hyundai Motor Group has outlined its future powertrain development strategy with a series of engines and transmissions representing its new ‘Smart Stream’ powertrains packaging. The Smart Stream technology incorporates a number of advanced technologies that will help Hyundai Motor Group meet its long-term global emissions goals.

Developed in-house, the Smart Stream powertrains deliver improved fuel economy and reduced exhaust emissions. Beginning with the introduction of 1.6-litre petrol and diesel Smart Stream engines, the technology will eventually be available for all Hyundai Motor Group vehicles. The improvements will enhance petrol and diesel engine efficiency, alongside the development of new plug-in hybrid and electric powertrains, plus the company’s next-generation Fuel Cell Electric Vehicle (FCEV).

First introduced at the 2017 Frankfurt International Motor Show, the Smart Stream powertrains will allow Hyundai Motor Group to respond to global changes in environmental regulation and meet customer demand for fun-to-drive cars. The word ‘Smart’ implies being smart in design, control, and operation, while ‘Stream’ refers to dynamic movement of mobility.

The next-generation Smart Stream technology optimizes the existing powertrain structure, with key engine components reduced in size and weight to enhance fuel efficiency. With the advanced combustion techniques of Smart Stream engines, Hyundai Motor Group aims to maximize thermal efficiency by up to 50 per cent in the future.

Among the Smart Stream technology presented at the International Powertrain Conference is the first commercial application of Continuously Variable Valve Duration (CVVD) technology. In the Smart Stream G 1.6-litre turbo engine, the opening and closing of the cylinder valve is timed to best respond to various driving modes, such as eco-driving or dynamic driving.

Other new technology includes the Smart Stream eight-speed wet Dual-Clutch Transmission (DCT). Unlike conventional automatic transmissions, the dual-clutch system enables optimal shift response, with the eight-speed gearing and high-efficient hydraulic system delivering both faster acceleration performance and excellent fuel economy at the same time.

By 2022, Hyundai Motor Group aims to develop an all-new Smart Stream powertrain line-up composed of 10 gasoline engines, six diesel engines, and six transmissions.

Key strategy for 2025

At the International Powertrain Conference in South Korea recently, Hyundai Motor Group underlined its belief that the internal combustion engine will maintain a strong presence in the market until 2025, as plug-in hybrid and electric powertrains start to receive wider acceptance. To respond to diversifying market needs, Hyundai Motor Group will produce a greater proportion of electric, fuel cell, and plug-in hybrid powertrains – all alongside its highly efficient new Smart Stream internal combustion engines.

This shift to produce more alternative powertrains is coupled with plans to enhance battery capacity and increase the electric-only range capabilities of its electric models, delivering greater value to customers.

Fuel Cell Electric Vehicle (FCEV)

With its new Smart Stream powertrains, Hyundai Motor Group also aims to build on its leadership position in advanced propulsion technology. While maintaining focus on improving the efficiency of its internal combustion engines is important, Hyundai Motor Group will continue to lead the industry in Fuel Cell Electric Vehicles (FCEV), by investing in the development of its next-generation hydrogen powertrain.

The next FCEV from Hyundai Motor Group will have a driving range of 800km, a maximum power output of 163PS, and the largest hydrogen storage density of any Fuel Cell vehicle on the market.

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