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Active Fuel Management (AFM), available on all Holden V8 (automatic transmission) models from 2009 is an exciting new Holden technology that temporarily de-activates four of the eight engine cylinders when less engine power is required.
Most V8 cars have more power than owners demand in all conditions. With AFM, owners can save fuel during routine commuting.
The Gen IV 6.0L (L76) engine saves fuel by using only half of the V8 engine's cylinders and seamlessly reactivating the other cylinders when you need full power for acceleration.
If you often travel long distances at steady speeds you can expect lower operating costs and fuel-efficiency
improvements. You can look forward to gains of up to 1.0 Litre per 100km under the Australian federal government's required testing procedure,
and potentially more in certain driving conditions. And these V8-powered vehicles don't have to compromise on the outstanding peak
power of the Gen IV 6.0L (L76) engine to go further on a tank of fuel.
It's not just fuel that you're conserving. Active Fuel Management reduces overall Greenhouse Gas emissions to the same extent as the fuel consumption reduction.
The engine's Electronic Throttle Control (ETC) is used to balance torque following cylinder deactivation or reactivation.
All cylinders are reactivated when you require acceleration or full torque, the transition takes less than
20 milliseconds and can't be detected as you drive.
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Managed by the sophisticated E38 engine control module (ECM), AFM automatically shuts down every second cylinder
of the engine, according to firing order, during light-load operation. It makes use of the engine's existing
capabilities, starting with the potential designed into the E38 ECM. The only mechanical components required
are special valve lifters for cylinders that are deactivated, and their control system.
