Combined fuel injection valve-ignition plug
AssigneeRobert Bosch GmbH
InventorsManfred Vogel, Werner Herden, Rainer Ecker
Life of this patent
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Abstract
A fuel injector having an integrated spark plug is provided, the fuel injector providing direct injection of fuel into a combustion chamber of an internal combustion engine, and the spark plug for igniting the fuel injected into the combustion chamber. Also provided is a spark-plug insulator that insulates a first electrode and a second electrode which is set apart from the first electrode by a spark gap, the fuel injector and the spark-plug insulator of the spark plug being arranged in a shared housing. The spark gap has a width of 50 to 300 μm and is disposed in front of the fuel injector at a distance of 3 to 10 mm.
Claims18
A fuel injection system, comprising:
- a fuel injector having spray-discharge orifice;
- a spark plug having a spark plug insulator, a first electrode, and a second electrode, wherein the spark plug insulator at least partially surrounds the first electrode, and wherein the second electrode is set apart from the first electrode by a spark gap that has a width between approximately 50 to 300 micrometers and is disposed in front of the spray-discharge orifice with a clearance between approximately 3 to 15 millimeters, the first and second electrode having a curved design, so that the second electrode is not disposed diametrically across from the first electrode, but forms an at least partial circle therewith;
- and
- a shared housing surrounding the fuel injector and the spark plug insulator.
Dependencies are inferred from the claim text.