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The 1.0L Ecoboost uses variable valve timing on both the intake and exhaust cams. Something I found interesting is the fact the timing belt is immersed in the engine oil.
Yup, plastic ribbed intake manifold on a turbocharged engine. A Bosch sensor is sitting on the top of the manifold; it’s probably a manifold air pressure sensor thought it might also measure temperature. Looking down low, you can see the oil cooler between the engine block and oil filter.
The littlest Ecoboost shows another trend now common with turbocharged engines and that’s the exhaust manifold being integrated with the head. From an enthusiast standpoint, this is not cool as it can restrict power output for those wanting to significantly increase the boost. |
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Ecoboost engines of course feature direct injection. You can see the fuel injector sitting next to the spark plug. The top of the piston is carefully shaped to control how the fuel is spread around the cylinder. On a side note, check out the lack of a side skirt on the piston on the sides that don’t take much thrust loading.
Here is another look at the fuel injector and spark plug. The cams on this engine also act on buckets directly on the valves.
To run direct injection, you have to have seriously high fuel pressures. Really the only way to achieve those high pressures is to use a positive displacement pump. The 1.0L Ecoboost uses a pump run off the camshaft. The thing on the other camshaft is one of the engine’s two water pumps.
