The Los Angeles Auto Show saw the world debut of the BMW Concept 7-Series ActiveHybrid. The concept shows the potential of BMW ActiveHybrid technology in the premium luxury car segment and is part of the BMW EfficientDynamics innovation strategy.
The objective of the 7-Series ActiveHybrid is to achieve much better fuel economy and lower emissions in a premium luxury car – a class not known for being particularly environmentally conscious.
Mild Hybrid Teamed With Potent V8
The BMW Concept 7-Series ActiveHybrid combines an 8-cylinder gas engine and electric drive as a mild hybrid. The drivetrain technology featured in the Concept Car allows enhanced driving dynamics together with a reduction in fuel consumption and emissions by 15% versus the same car running on an internal combustion engine only. BMW states that the ActiveHybrid does not compromise the driving dynamics, performance or features of the 7-Series.
BMW contends that there are no compromises to the original 7-Series equation when the mild hybrid is adopted. The ActiveHybrid Seven looks practically the same, has the same level of comfort and performance while getting better fuel economy with lower emissions through use of the mild hybrid technology.
Twin Turbo V8 Based on 750i Powerplant
The internal combustion engine portion of the BMW Concept 7-Series ActiveHybrid is a Twin Turbo V8 gasoline engine and high precision fuel Injection based on the 4.4L V8 of the BMW 750i. Maximum output of the conventional engine in the regular production model is 407 horsepower, with peak torque of 442 lb-ft.
BMW claims the V8 power unit is the most efficient engine in its class and is ideal for focusing on both driving dynamics and efficiency. BMW says its V8 is the only eight-cylinder gasoline engine in the world with its turbochargers mounted in the Vee between the two cylinder banks.
Electric Motor incorporated in Transmission Housing
The V8 is combined with an electric motor fully integrated in the transmission housing, developing maximum output of 20 hp and peak torque of 155 lb-ft. So with the mild hybrid concept, the electric motor boosts the dynamic driving potential of the eight-cylinder gasoline engine in a unique manner most appropriate for the character of the BMW 7 Series, giving the car better acceleration than the already great acceleration of the 750iL.
Regenerative Braking Supplements Power for Accessories
Using Brake Energy Regeneration, the electric motor supplies electric power to the power-consuming items on board the car, minimizing the direct conversion of fuel into electrical energy and maximizing the drive power available for enhanced driving dynamics.