Smart hi-tech solutions
The Cambiano drive system is based on four electric motors, one for each wheel, and the respective deceleration unit. The four motors, which are produced by Magneti Marelli, are mounted on the front and rear frames and each delivers a continuous supply of 60 kW with peaks of 150 kW for a total of 600 kW maximum power output, with torque of 640 Nm. Each motor is controlled separately and electronically to guarantee various functions, including energy regeneration when decelerating and braking, traction control with the option of continuously varying the torque split between the wheels independently (Vectoring Stability Program) and anti-lock braking assistance. The traction control strategies make the vehicle even more enjoyable to drive, guaranteeing outstanding performance and maximum safety over all types of routes. The drive system incorporates an APU (Auxiliary Power Unit) to charge the batteries and, when necessary, to supply energy directly to the motors.
The solution proposed by Pininfarina for the APU of the Cambiano is extremely original and innovative, very consistent with the general philosophy of the project: this is a 50 kW micro turbine, under development by the Bladon Jets, which normally runs on diesel but which can be calibrated to be compatible with various types of fuel. In addition to this advantage, the turbine is much smaller than those of piston engines with a similar power delivery, it weighs just 40 kg, even that lower than that of a heat engine of equal power, and generates low polluting emissions.
These features make this turbine and therefore the solution more consistent with the goals of the weight reduction, space optimization, and reduction of actual emissions of the vehicle in service, who were behind the project of the Cambiano. The micro turbine chosen for the Cambiano has also technical features that make it particularly quiet and vibration-free, enhancing comfort for passengers. This type of extended range electric drive is thus amply in line with EURO 6 legislation, and is already compatible with possible evolutions (EURO 7 ready).
The battery pack developed by FAAM is installed between the seats and the rear axle, where it is protected from possible collisions and easily replaced during servicing. The battery is of the high power, high energy density lithium ion type, has a capacity of 50 kW/h, a peak power delivery of 500 kW, and can be recharged in 6 hours using a 6 Kw/h grid and in 52 minutes with the APU. Combined with the micro turbine, it guarantees a range of 205 km in the urban cycle in all-electric mode, and a total range in the NEDC (New European Driving Cycle) mixed cycle of over 800 km in extended range mode. Battery functioning is monitored by a BMS (Battery Management System) unit, which verifies that the individual cells operate within the established normal functioning range. In the event of a malfunction, the battery is immediately isolated from the rest of the vehicle.