Fluid injector, combustion engine and method for operating a combustion engine
AssigneeContinental Automotive GmbH
InventorMauro Grandi
Life of this patent
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Abstract
A fluid injector for a combustion engine is disclosed, including an injector housing having a fluid path wherein the fluid path extends along a longitudinal axis from an injector inlet to an injector outlet; a coil; a pole piece; a first valve adapted to act on the fluid path and having a first armature; a second valve adapted to act on the fluid path and having a second armature. The first armature and the second armature are arranged proximate to the pole piece on antipodal sides of the pole piece along a longitudinal direction.
Claims20
A fluid injector for direct injection of compressed natural gas into a combustion chamber of a combustion engine, the fluid injector comprising:
- an injector housing including a fluid path wherein the fluid path extends along a longitudinal direction from an injector inlet to an injector outlet;
- one coil;
- a pole piece;
- a first valve configured to act on the fluid path and comprising a first armature;
- and
- a second valve configured to act on the fluid path and comprising a second armature,
- wherein the first armature and the second armature are arranged proximate to the pole piece on antipodal sides of the pole piece along the longitudinal direction, and
- wherein the first valve comprises a valve needle, the first armature is axially fixed to the valve needle and the valve needle extends through a central opening of the pole piece and through an opening of the second armature.
A fluid injector for direct injection of compressed natural gas into a combustion chamber of a combustion engine, the fluid injector comprising:
- an injector housing including a fluid path wherein the fluid path extends along a longitudinal direction from an injector inlet to an injector outlet;
- one coil;
- a pole piece;
- a first valve configured to act on the fluid path and comprising a first armature;
- and
- a second valve configured to act on the fluid path and comprising a second armature,
- wherein the first armature and the second armature are arranged proximate to the pole piece on antipodal sides of the pole piece along the longitudinal direction, and
- wherein the first valve comprises a first sealing seat and a first closing member, the first closing member is connected to the first armature, the second valve comprises a second sealing seat and a second closing member, the second closing member is connected to the second armature, the second closing member is disposed upstream to the first closing member in the fluid path and the first closing member is disposed at the injector outlet.
A combustion engine, comprising:
- a cylinder having a combustion chamber;
- and
- a fluid injector coupled to the cylinder in a manner capable for direct injection of a fuel fluid into the combustion chamber of the cylinder, the fluid injector comprising:
- an injector housing including a fluid path wherein the fluid path extends along a longitudinal axis of the fluid injector from an injector inlet to an injector outlet;
- a single coil;
- a pole piece;
- a first valve configured to act on the fluid path and comprising a first armature;
- and
- a second valve configured to act on the fluid path and comprising a second armature,
- wherein the first armature and the second armature are arranged proximate to the pole piece on antipodal sides of the pole piece along the longitudinal axis, and
- wherein the first valve comprises a first sealing seat and a first closing member, the first closing member is connected to the first armature, the second valve comprises a second sealing seat and a second closing member, the second closing member is connected to the second armature, the second closing member is disposed upstream to the first closing member in the fluid path and the first closing member is disposed at the injector outlet.
Dependencies are inferred from the claim text.