The Kia Sportage is the most important Kia model in Europe. The current generation was launched in 2016 and, despite the fact that the compact SUV segment now has more offer than ever it has been able to remain among the best sellers. And beware, there are new developments, as in 2018 will debut the first 48 V light hybrid diesel propulsion system.
This new Eco Dynamics + system joins the Eco Dynamics range, reduces CO2 emissions and consumption. When accelerating, it adds electrical energy from an additional 48 V battery and increases the time when the combustion engine is not running, thanks to the new alternator-starter unit. This technology, for which brands are increasingly betting, is the first of the bets that Kia launches each of the 2025 electrification strategy, which includes launching five new hybrids, five plug-in hybrids, five electric hybrids and, in 2020, a new electric with fuel cell. Its great advantages, which does not greatly increase the cost and can be integrated into any architecture (the components are compact and can be integrated into vehicles and existing propulsion systems, without affecting their size).
What does it consist of?
The Kia light hybrid technology consists of a lithium-ion battery, with 0.46 kWh and 48 V (it will be placed under the floor of the trunk, hardly affects the functionality of the car) and a new alternator-starter motor (Mild -Hybrid Starter-Generator MHSG). Since the MHSG is integrated directly with the combustion engine, moved by the crankshaft through a belt, there is virtually no need to modify the engine compartment.
By means of an electronic control, the MHSG uses an inverter with which the system alternates of negligible way between the modes:
Engine: Connected to the crankshaft of the diesel engine through a belt, the MHSG provides up to 10kW of electrical power as backup to the acceleration, which reduces the load of the thermal engine and its emissions.
Generator: The system recovers the kinetic energy of the vehicle in retention and braking from the crankshaft, to recharge the battery.
An electronic control unit (Electronic Control Unit ECU) calculates the most efficient way to use the available energy and manages it according to the amount of charge remaining in the battery.
As the electric motor of 48 V provides electrical power increases the acceleration. But above all, it reduces consumption and CO2 emissions “by up to 4% according to the WLTP cycle and up to 7% in the European NEDC cycle”, says the brand (they have calculated it with the first and extrapolated to the second). The battery power is also used for the automatic stop and start function during driving (Moving Stop & Start), so that the combustion engine stops working automatically in braking and retention. In addition, as the new Kia 48V battery is connected to the electrical installation of the car garages to a current transformer, the conventional battery can be of a smaller size. The starter also reduces its size.