Description and Operation: Engine: Overview

The following aims were at the forefront during development of the engine: 

• Reduction of weight compared to the 4-cylinder engines with comparable or even lower power
• Optimization of energy efficiency through direct injection and turbocharging  compared to the currently used 4-cylinder engines with intake manifold injection
• Reduction of inner friction compared to the engines currently used through
  • the reduction in number of cylinders from 4 to 3, thus reducing swept area and number of film lubricated bearings.
  • 8mm off set of crankshaft bore relative to cylinder bore centerline.
  • reduced friction of timing and accessory belt drives.
  • use of a variable oil pump.
  • split cooling system to improve warm-up time, and thus reduce the cold oil viscosity faster.

Since introduction of the EcoBoost® engines, the downsizing concept (reduction in cubic capacity, number of cylinders and size) has also been rigorously further implemented with this engine.

Main features: 

• 3-cylinder double overhead camshaft engine with 12 valves
• Cast iron cylinder block, aluminum alloy cylinder head
• Variable camshaft timing on the intake and exhaust camshafts
• Engine oil lubricated timing belt for driving the camshafts
• Variable oil pump for delivery rate matched to meet demand
• Engine oil lubricated timing belt for driving the oil pump
• Turbocharger for increased power and reduced fuel consumption
• Additional thermostat on the short block for rapid warming up of the engine after a cold start