With extraordinary adaptability, integration possibilities with a broad range of vehicle concepts, the rapid deployment of this plug-in hybrid drive technology to the BMW model range is a viable and credible proposition.
The plug-in hybrid prototype for the BMW 3 Series gives us a first glimpse into the super-efficient drive pleasure that the best-selling premium sedan in the world can offer.
Integrating a four-cylinder TwinPower Turbo petrol engine from the family of new Efficient Dynamics engines with an electric motor, the BMW 3 Series plug-in hybrid prototype provides sporty performance standards equal to a traditionally powered BMW 3 Series 6-cylinder, mixed with a considerable reduction in fuel use. Its plug-in hybrid drive system produces approximately a combined 245 hp and combined maximum torque of about 400 Nm (295 lb-ft).
This data, along with the considerably added acceleration from the boost function of the electric motor, brings a clear and extremely dynamic aspect to everyday driving. Average fuel use and CO2 emissions are about 2 litres/100 km (140 mpg imp) and 50 g/km, respectively. In the all-electric setting, the prototype can reach a 120 km/h (74.5 mph) top speed and driving range of about 35 km (22 miles).
BMW 3 Series Sedan’s plug-in hybrid system: ideal foundation, superior drive elements, optimum efficiency.
The 3 Series Sedan offers the optimal start in developing an outstandingly dynamic and fuel-economic plug-in hybrid. The regular gas-combustion models already set benchmarks in the mid- size premium group with their sportiness and prudent fuel use mix. This is from factors like intelligently lightweight designing, class-leading aerodynamics, and a broad range of standard-specification BMW Efficient Dynamics tech.
The internal combustion engine that the BMW 3 Series plug-in hybrid prototype uses is based on a TwinPower Turbo four-cylinder that has twice been named “International Engine of the Year”.
Its qualities are athletic performance, smoothly refined running, and extraordinary efficiency. The plug-in hybrid prototype also has an electric motor along with power electronics based directly on BMW’s eDrive technology found in i3 and i8 models. The motor runs on a lithium-ion battery that, along with the battery management system and highly efficient direct cooling system, are fixed in the skill and experienced garnered from the BMW i development. Recharging the battery can occur at any household power point and is fitted in a specifically crash-safe location under the load area.
The power electronics create a single amalgamated system that powers the electric motor, through a liquid-cooled inverter, controls energy flow from the high-volt battery to the electrical systems onboard and offers central control of specific hybrid functions. The engine and electric motor’s drive torque goes to the rear wheels of the 3 Series plug-in hybrid prototype through an eight-speed Steptronic transmission that, like traditionally powered BMWs, creates its own added contribution to the overall drive system’s efficiency.
Now, the possible integration of a plug-in hybrid system is considered at every development stage for new BMW and MINI models. For one thing, this guarantees that future hybrids offer the same practicality level as the base versions. For instance, there is only a minor reduction in trunk space in the 3 Series plug-in hybrid prototype when compared with a conventional Series Sedan, while the interior configurations, such as the folding rear seat, stay the same. The simplicity in integrating the eight-speed Steptronic transmission into the plug-in hybrid is a further advantage of this adaptable, progressive development plan.
Intelligent energy control with adaptable powertrain management.
Like the models currently in production, the 3 Series plug-in hybrid prototype has a Driving Experience Control switch mounted on the central console. Driver can use this to choose different vehicle settings to fit different needs and conditions. The three different modes are: COMFORT, SPORT and ECO PRO mode. Each has its own suspension settings, shift traits for the eight-speed Steptronic transmission, and hybrid operation strategy.
COMFORT perfectly balances comfort and economy on one side with traditional BMW energetic performance on the other. Its electric motor control strategy leans to an easy, fuel-efficient drive. In tandem, the electric motor and combustion engine can also produce extreme power and performance when needed. SPORT mode, meanwhile, maximises performance, by harnessing the fully combined output of the both power plants.
In SPORT mode, engine and motor are on all the time, ensuring instant response to every accelerator command. Finally, ECO PRO mode focuses on harnessing the electrification’s full potential for efficiency. Intelligent hybrid practicality lets the electric motor and engine work together for maximum overall system effectiveness. Economic energy management is improved by adjustable control of the electronic comfort functions such as temperature, seat heating, and exterior mirror heating, always operating at the most apt power level. This also assists in maximising the automobile’s range.
With the touch of a button, the driver can switch between the different hybrid modes. The MAX eDrive mode offers all-electric, zero-emission drive. The SAVE Battery mode maintains a constant charge to the battery. If the battery is under 50 percent, it increases the charge level. This way, drivers are sure that they have enough power to go all-electric in a later, urban portion of the trip.
The BMW 3 Series plug-in hybrid prototype also has a unique Proactive Driving Assistant adapted to hybrids. Incorporated in the navigation system, it manages the powertrain not just by referencing current battery capability but also with upcoming route profiles, speed limits, and traffic situation.