ford 1.0 ecoboost

In collaboration with engineering partners Schaeffler Group, Ford has been evaluating cylinder deactivation on its three-cylinder 1.0 litre EcoBoost engine in a bid to make the award-winning mill even more fuel efficient.

On-road tests using a working prototype have showed fuel efficiency improvements of up to 6% after engineers conducted an experimental investigation into cylinder deactivation. The evaluation has also seen the development of a new dual mass flywheel, which has enabled cylinder deactivation to take place at a wider range of engine loads and speeds.

For the trials, engineers equipped a Ford Focus 1.0L EcoBoost with cylinder deactivation hardware that they could monitor deactivation of one cylinder. They also explored rolling cylinder deactivation to run the engine in half-engine mode.

ford 1.0 ecoboost 02

They also fitted the prototype with a newly-developed system that combined a dual mass flywheel, a pendulum absorber and a tuned clutch disc, which the automaker says is particularly effective at lower revs. As well as enabling a wider operating range of cylinder deactivation, the system helped counteract any effect that the cylinder deactivation had on levels of noise, vibration and harshness.

Fuel efficiency improvements were recorded in homologated conditions and during test drives of the prototype vehicle, done over a typical commuter distance of 55 km on a combination of motorway, city roads and rural roads in and around Cologne, Germany.

Cylinder deactivation is among a number of fuel efficiency solutions Ford is investigating for its three-time Engine of the Year winner at its European Research and Innovation Centre in Aachen. In Malaysia, the engine is currently available on the Ford Fiesta 1.0L EcoBoost.