Gas injector having reduced wear
AssigneeRobert Bosch GmbH
InventorMartin Mueller
Life of this patent
Estimating the term…
Abstract
A gas injector for injecting a gaseous fuel. The gas injector includes a solenoid actuator having an armature, an internal pole and a coil; a closing element, which unblocks and seals a gas path at a valve seat, the armature being connected to the closing element; a sealed lubricant chamber, which is filled with a lubricant, and in which the armature is situated, the lubricant ensuring lubrication of the armature; and a flexible sealing element, which seals the lubricant chamber with respect to the gas path, a damping device being situated in the lubricant chamber.
Claims8
A gas injector for injecting a gaseous fuel, comprising:
- a solenoid actuator having an armature, an internal pole, and a coil;
- a closing element, which unblocks and seals a gas path at a valve seat, the armature being connected to the closing element;
- a sealed lubricant chamber, which is filled with a lubricant, and in which the armature is situated, the lubricant ensuring lubrication of the armature;
- and
- a flexible sealing element, which seals the lubricant chamber with respect to the gas path,
- a damping device configured to decelerate the closing element during a resetting operation of the gas injector from an open into a closed state, and situated in the lubricant chamber,
- wherein the damping device includes a damping pin and an elastic damping element;
- and, the damping pin and the elastic damping element are configured to be brought into operative connection with the closing element and/or the armature, during the resetting operation.
Dependencies are inferred from the claim text.