Alpina engine
Award Winning Performance And Economy
Depending on the load on the transmission, the injection of fuel into a given cylinder is interrupted for a fraction of a second creating the required reduction in torque that the automatic transmission needs for the up shift .
The advantage versus a more conventional timing retardation system are noticeably quicker shifts and improved thermo dynamic efficiency due to reduced exhaust temperatures as well as lower fuel consumption.
The single cylinder fade out
known as Einzelzylinderabschaltung in german
is accompanied by a raspy back pressure burble
in Sport or Manual Mode and was initially engineered for application in the ALPINA B6 GT3 race car
Performance
Generating 507hp (373 kW) at a moderate 5,500rpm, with a maximum torque of 700Nm available from 3,000 to 4,750rpm, the V8 powerplant provides sensational performance, pace and acceleration.
Two Honeywell Garrett turbochargers sit inside the V of the two cylinder banks, working in parallel to force-feed the 4.4l all aluminium engine.
Compared to its super-charged predecessor this engine configuration delivers more torque over a broader range and improves throttle response at low revs.
To fully leverage the potential of the engine an optimised indirect inter cooling system air-to-water / water-to-air with short intake tracts increases inter cooler through flow.
The high-performance cooling package gains its thermo dynamic efficiency through the use of a large volume low temperature inter cooler as well as two water-to-air inter-coolers placed close to the engine.
Direct injection and Double-VANOS contribute to the B5 Bi-Turbo’s class-leading emissions and economy in the super saloon segment 10.8 l/100km and 252g/km CO2
The 8-Speed Allrounder
Adapted and tested in cooperation with ZF the advanced 8 speed sport automatic transmission with SWITCH TRONIC sets a new benchmark in providing unparalled comfort and sportiness.
High levels of torque combined with eight speeds makes for ultimately smooth gear changes with no noticeable interruption to the delivery of power in Automatic Mode only the accompanying acoustics and the dynamic rev counter provide feedback as to the workings of the transmission 700Nm of torque allow the B5 Bi Turbo to glide along in a high gear even at low speeds benefitting both comfort and fuel economy In Sport Mode a completely different character emerges, gear changes are virtually immediate.
The innovative single cylinder fade out Einzelzylinderausblendung facilitates super quick up-shifts in just milliseconds accompanying each up-shift with a deep back pressure burble.
The Manual Mode gives the driver full control over the transmission allowing them to shift up or down at the touch of a button.
The system also allows for multi simultaneous down-shifts in fractions of a second hereby the transmission will skip several gears depending on accelerator loads and engine revs