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US 9,541,041 B2Granted
Injection valve
AssigneeFord Global Technologies, LLC
InventorsKlemens Grieser, Oliver Berkemeier, Jens Wojahn, Jan Linsel, Kay Hohenboeken
Life of this patent
Estimating the term…
Abstract
An injection valve for injecting fuel into a combustion chamber of an internal combustion engine comprises a valve seat, a valve element, at least one injection opening formed in the valve seat and leading to the combustion chamber, the at least one injection opening opened or closed by a stroke motion of the valve element, a catalytic coating provided in a region of the injection valve which faces the combustion chamber, and at least one protuberance which is elongated in a direction of the combustion chamber and projects into the combustion chamber.
Claims18
An injection valve for injecting fuel into a combustion chamber of an internal combustion engine, comprising:
- a valve seat protruding into the combustion chamber along a central longitudinal axis of the injection valve, the valve seat having a first protuberance and a second protuberance extending therefrom, the first protuberance distinct from and adjacent to the second protuberance of the valve seat;
- a valve element;
- a plurality of injection openings formed in the valve seat, arranged between the first and second protuberances in a radial direction, and leading to the combustion chamber, the injection openings opened or closed by a stroke motion of the valve element;
- and
- a catalytic coating provided in a region of the injection valve which faces the combustion chamber;
- wherein
- the first and second protuberances are elongated in a direction of the combustion chamber and project into the combustion chamber;
- and
- the first protuberance is a single protuberance, being the only protuberance located radially interior to the plurality of injection openings, wherein the second protuberance comprises a plurality of protuberances arranged in a circle around the first protuberance projecting into the combustion chamber.
6 more elements
A fuel injector, comprising:
- a valve mechanism and a valve seat, the valve seat protruding out towards a combustion chamber in a region around a central longitudinal axis of the fuel injector;
- a first protuberance extending out from the valve seat at the central longitudinal axis of the fuel injector, the first protuberance distinct from and abutting the protruding out of the valve seat;
- a second protuberance extending out from the valve seat in a radial direction around the first protuberance;
- a plurality of injector openings arranged between the first protuberance and the second protuberance in a radial direction;
- and
- a catalytic coating formed on the first and second protuberances, the catalytic coating being composed of a material capable of catalytic conversion of adhered fuel and soot particles, wherein the second protuberance comprises a plurality of protuberances arranged in a circle around the first protuberance projecting into the combustion chamber.
3 more elements
A system, comprising:
- an engine including a combustion chamber;
- and
- a direct fuel injector for injecting fuel into the combustion chamber, the fuel injector comprising:
- a valve mechanism and a valve mechanism seat, the valve mechanism seat extending out towards the combustion chamber in a region around a central longitudinal axis of the fuel injector;
- a first protuberance extending out from the valve mechanism seat into the combustion chamber at the central longitudinal axis of the fuel injector, the first protuberance distinct from and contiguous to the extending out of the valve mechanism seat;
- a second protuberance extending out from the valve mechanism seat into the combustion chamber in a radial direction around the first protuberance;
- a plurality of injector openings formed in the valve mechanism seat and arranged between the first protuberance and the second protuberance in a radial direction;
- and
- a catalytic coating formed on the first protuberance and the second protuberance, the catalytic coating being composed of a material capable of catalytic conversion of adhered fuel and soot particles, wherein the first protuberance has a length that is at least 50% of a width of the first protuberance, and wherein the second protuberance has a length that is at least 50% of a width of the second protuberance;
- wherein the valve mechanism seat is made of a first material and the first and second protuberances are made of a second material, the second material having a higher heat conductance than the first material.
7 more elements
Dependencies are inferred from the claim text.