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US 10,480,497 B2Granted
Feed pump, especially fuel feed pump for a vehicle heater
AssigneeEberspächer Climate Control Systems GmbH & Co. KG
InventorMichael Humburg
Life of this patent
Estimating the term…
Abstract
A feed pump (10), especially fuel feed pump for a vehicle heater, includes a pump piston (36) movable to and fro in a pump chamber (72). The pump piston ejects and receives fluid. A driving arrangement (30) drives the pump piston (36). The driving arrangement (30) includes at least one driving element (28) made of magnetic shape memory material.
Claims20
A feed pump for feeding fuel for a vehicle heater, the feed pump comprising:
- a pump chamber;
- a pump piston housing;
- a pump piston received in the pump piston housing such as to be movable to and fro in the pump chamber, and in a direction of a longitudinal axis of the feed pump, for ejecting fluid from the pump chamber and for receiving fluid within the pump chamber;
- a driving element housing connected to the pump piston housing and providing a fluid inlet duct;
- a driving arrangement driving the pump piston, the driving arrangement comprising at least one driving element made of a magnetic shape memory material, the at least one driving element being arranged in the driving element housing;
- and
- a transmission element coupling the at least one driving element with the pump piston for transmitting a driving force, the driving element housing and the pump piston housing providing a passage opening for passage of the transmission element, wherein the passage opening provides passage of fluid from the driving element housing to an inner volume area of the pump piston housing, the pump piston having a fluid passage duct passing through the pump piston and providing fluid communication between the inner volume area of the pump piston housing and the pump chamber.
4 more elements
A feed pump comprising:
- a pump piston housing, wherein a pump chamber is defined within the pump piston housing;
- a pump piston cooperating with the pump piston housing and movable in a direction of a longitudinal axis of the feed pump, for ejecting fluid from the pump chamber and receiving fluid within the pump chamber, the pump piston defining a fluid passage duct passing through the pump piston;
- a driving element housing connected to the pump piston housing and providing a fluid inlet duct and an outlet passage opening between the driving element housing and an inner volume area of the pump piston housing, the fluid passage duct of the pump piston defining a fluid communication path between the inner volume area of the pump piston housing and the pump chamber;
- a driving element made of a magnetic shape memory material, the driving element being arranged in the driving element housing and affecting fluid passage from the fluid inlet duct to the outlet passage opening;
- and
- a transmission element coupling the driving element with the pump piston for transmitting a driving force from the driving element to the pump piston;
- and a magnetic field generation unit with an electrically excitable coil arrangement generating a magnetic field acting on the driving element to change a shape of the driving element made of a magnetic shape memory material from an initial shape position, to generate the driving force transmitted from the driving element to the pump piston via the transmission element.
4 more elements
Dependencies are inferred from the claim text.