McLaren Cars has confirmed the P1 supercar will employ a 673kW/900Nm hybrid drivetrain including the ability for more than 10kms of driving in emissions-free full-electric mode.
The P1 is slated for debut at next month’s Geneva Motor Show and its performance will be boosted further by F1-style DRS (Drag Reduction System) and IPAS (Instant Power Assist System).
Petrol power comes from an improved version of McLaren’s M838T 3.8-litre twin-turbocharged V8 delivering 541kW at 7500rpm and peak torque of 720Nm from 4000rpm.
The electric motor provides 132kW of power and 260Nm of instantaneous torque. The lightweight electric powerplant, developed by McLaren Electronics is mounted onto the petrol engine (which has a uniquely cast block to suit) and both drive the rear wheels via a dual-clutch seven-speed transmission.
And here’s a really clever development – the electric motor actually assist in providing faster upshifts by applying instant negative torque making engine revs drop quicker at shift time.
Like other hybrid systems, the McLaren P1 in ‘E’ mode can be driven on pure electric power for up to 10kms and when the battery is depleted, the twin-turbo V8 instantly cuts-in and also provides charge to the battery.
DRS comes directly from Formula 1. The McLaren P1 employs a moveable flap on the rear wing which (in a straight line) reduces drag by 23 per-cent (it’s de-activated by pushing a button or touching the brake pedal).
IPAS provides 132kW of instant power. Using a lightweight (96kgs) battery pack claimed to provide more power density than any other, McLaren prioritized calibration to favour power delivery over energy storage.
