|C5 Airscape diesel mild hybrid.|
Citroën will unveil a diesel mild hybrid concept Cabriolet—the C5 Airscape—at the upcoming Frankfurt Motor Show in September.
The concept vehicle sports a 2.7-liter V6 HDi engine with 6-speed automatic transmission, the UrbanHybrid mild hybrid system, and an innovative Snow Motion traction control system for a performance close to that of a four-wheel drive.
The UrbanHybrid system is a start-stop system that uses supercapacitors for energy storage. (Earlier post.)
In Drive mode, when this concept vehicle is travelling at under 6 kph (3.7 mph) and the driver’s foot is on the brake pedal, the engine cuts out. It starts again instantly and automatically as soon as the driver releases the brake pedal.
The onboard network (air conditioning, radio etc.) is powered by energy recovered during the deceleration and braking phases. The system will provide a temporary boost to engine torque, when overtaking for example.