Motor Vehicle Fuel Pump Cover, Motor Vehicle Fuel Pump Having Such a Cover, and Method for Producing Said Cover

Abstract

A motor vehicle fuel pump cover is provided for covering a fuel guide region of a motor vehicle fuel pump by way of a cover housing. A phase change core is received in the cover housing. The phase change core is designed to change the phase state thereof while receiving thermal energy from the fuel guide region. The phase change core is designed for phase change at a temperature of more than 60 C.

Claims

1. A motor vehicle fuel pump cover for covering a fuel guide region of a motor vehicle fuel pump, comprising: a cover housing; and a phase change core accommodated in the cover housing, wherein the phase change core is designed to change its phase state taking up thermal energy from the fuel guide region, and the phase change core is designed for phase change at a temperature of more than 60 C.

2. The motor vehicle fuel pump cover as claimed in claim 1, wherein the cover housing surrounds the phase change core partially or completely.

3. The motor vehicle fuel pump cover as claimed in claim 2, wherein the cover housing is made of a closed-pore foam.

4. The motor vehicle fuel pump cover as claimed in claim 1, wherein the phase change core comprises wax or paraffin.

5. A motor vehicle fuel pump, comprising: a motor vehicle fuel pump cover as claimed in claim 1; and a fuel guide region of the motor vehicle fuel pump having an outer surface, wherein in an intended mounted state, the cover housing has an inner surface facing toward the motor vehicle fuel pump, and the outer surface and the inner surface delimit a hollow space, wherein the phase change core is arranged in the hollow space.

6. The motor vehicle fuel pump as claimed in claim 5, wherein the cover housing is connected in a form-fitting manner to the motor vehicle fuel pump.

7. A method for producing a motor vehicle fuel pump cover, the method comprising the steps of: providing a phase change core, wherein the phase change core changes its phase state taking up thermal energy from a fuel guide region of a fuel pump, and further wherein the phase core changes phase at a temperature greater than 60 C.; partially or completely encasing the phase change core with a cover housing; and shaping the motor vehicle fuel pump cover.

8. The method for producing a motor vehicle fuel pump cover as claimed in claim 7, wherein the phase change core is introduced into a cover housing mold, and a remaining hollow space in said cover housing mold is filled with a cover housing material, such that the motor vehicle pump cover is formed.

Description

BRIEF DESCRIPTION OF THE DRAWING

[0023] FIG. 1 is a sectional illustration of a motor vehicle fuel pump having a mounted motor vehicle fuel pump cover.

DETAILED DESCRIPTION OF THE DRAWING

[0024] The motor vehicle fuel pump 1 is partially surrounded by a motor vehicle fuel pump cover 2. The motor vehicle fuel pump cover 2 has a phase change core 3, which is accommodated in a cover housing 4 and is partially surrounded by the latter. In this case, the phase change core 3 contacts the fuel guide region 5 of the motor vehicle fuel pump 1 directly with that region which is not surrounded by the cover housing.

[0025] The motor vehicle fuel pump cover 2 forms a fluid-tight latching connection with the motor vehicle fuel pump 1, in the regions 6 and 7 in the sectional illustration, so that even if the phase change core 3 has changed into its liquid state, it cannot escape from the hollow space in which it is accommodated.

[0026] In the present case, the cover housing 4 consists of a closed-pore polyurethane foam, such that the phase change core 3, if it has absorbed thermal energy from the fuel and has changed into its liquid state, cannot escape from the hollow space in which it is accommodated. Furthermore, a motor vehicle fuel pump cover 2 of this type has sufficient flexibility for mounting on the motor vehicle fuel pump 1.

[0027] The motor vehicle fuel pump 1 has pump connections 8, by means of which fuel is taken in and released. The cover housing 4 has a recess 9, which is closed by way of a sealing plug 10. The recess 9 is provided so that, during the production of the motor vehicle fuel pump cover 2, a retaining arm (not shown) holds the phase change core 3 in the production mold (not shown) at a predefined position, such that the phase change core 3 can be surrounded with the cover housing 4.

[0028] The foregoing disclosure has been set forth merely to illustrate the invention and is not intended to be limiting. Since modifications of the disclosed embodiments incorporating the spirit and substance of the invention may occur to persons skilled in the art, the invention should be construed to include everything within the scope of the appended claims and equivalents thereof.