Line arrangement for a motor vehicle having at least one line which is configured as a textile hose

Abstract

A line arrangement for a motor vehicle, preferably for a waste heat utilization system of a motor vehicle. The line arrangement includes one or more lines for conducting a fluid medium and is distinguished, in particular, by the fact that at least one line comprises at least one textile hose or is configured as at least one textile hose, and the textile hose has a textile structure and an inner sheath.

Claims

1. A waste heat utilization system for converting waste heat of an internal combustion engine into utilizable energy, comprising an evaporator; an expansion machine; a condenser; a delivery device; and a line arrangement having: at least one textile hose having: a textile structure; an inner sheath; and an inner line enclosed by the textile hose and configured to conduct a fluid medium, wherein in case of a leak of the inner line the textile hose is configured to at least one of retain the fluid medium and conduct the fluid medium to a predefined location, wherein the at least one textile hose serves for fluid connection of at least one of the following: the evaporator and expansion machine; the expansion machine and condenser; the condenser and a delivery device for delivering the fluid medium; and the delivery device for delivering the fluid medium and an evaporator.

2. The waste heat utilization system according to claim 1, wherein the textile structure is configured as a woven textile structure.

3. The waste heat utilization system according to claim 1, wherein the inner sheath is configured from at least one of a medium-resistant elastomer and a medium-tight elastomer.

4. The waste heat utilization system according to claim 1, wherein the textile structure is configured to absorb pressure forces of the fluid medium.

5. The waste heat utilization system according to claim 1, wherein the textile hose has a dimensionally flexible configuration.

6. The waste heat utilization system according to claim 1, wherein the textile hose has a dimensionally stable configuration.

7. The waste heat utilization system according to claim 6, wherein the textile hose has a spiral woven into the textile hose for achieving the dimensionally stable configuration.

8. The waste heat utilization system according to claim 1, wherein the inner line is formed by at least one of the following: a) a stainless steel line; b) a hydraulic hose; and c) a textile hose.

9. The waste heat utilization system according to claim 1, wherein the textile hose is provided with an insulating material.

10. The waste heat utilization system according to claim 8, wherein the insulating material is arranged between the inner sheath and the inner line.

11. The waste heat utilization system according to claim 1, wherein the textile hose one of makes contact with or is at least conducted past in an adjoining manner, at least one of an internal combustion engine, an exhaust gas manifold, and an exhaust gas turbocharger.

12. The waste heat utilization system according to claim 1, wherein the fluid medium comprises one of steam and a flammable medium.

13. The waste heat utilization system according to claim 1, wherein the textile hose is of elastic configuration in at least one of its longitudinal direction and its radial direction.

14. The waste heat utilization system according to claim 1, wherein the textile hose can contract as a result of vacuum, as a result of which a compensating container can be one of a smaller dimension and dispensed with.

15. The waste heat utilization system according to claim 1, wherein the textile hose is at least one of: temperature-resistant up at least one of 60? C., 80? C., 100? C., 120? C., 140? C., 160? C., 180? C., 200? C., 220? C. and 240? C. and pressure-resistant up to at least one of 0.7 bar, 1 bar, 4 bar, 8 bar, 16 bar, 32 bar and 48 bar.

16. The waste heat utilization system according to claim 1, wherein the line arrangement comprises at least two textile hoses, wherein at least one textile hose runs within another textile hose, and wherein, in case of a leak of an inner textile hose, an outer textile hose is configured to one of retain the fluid medium and conduct the fluid medium to a predefined location.

17. The waste heat utilization system for converting waste heat of an internal combustion engine into utilizable energy according to claim 1, wherein the waste heat utilization system is a steam circuit.

18. The waste heat utilization system according to claim 1, wherein the textile hose is pressure-resistant up to at least one of 0.7 bar, 1 bar, 4 bar, 8 bar, 16 bar, 32 bar, and 48 bar.

19. A motor vehicle, comprising: a waste heat utilization system for converting waste heat of an internal combustion engine into utilizable energy, comprising: an evaporator; an expansion machine; a condenser; a delivery device; and a line arrangement having: at least one textile hose having: a textile structure; an inner sheath; and an inner line enclosed by the textile hose and configured to conduct a fluid medium, wherein in case of a leak of the inner line the textile hose is configured to at least one of retain the fluid medium and conduct the fluid medium to a predefined location, wherein the at least one textile hose serves for fluid connection of at least one of the following: the evaporator and expansion machine; the expansion machine and condenser; the condenser and a delivery device for delivering the fluid medium; and the delivery device for delivering the fluid medium and an evaporator.

20. The motor vehicle according to claim 19, wherein the waste heat utilization system is a steam circuit.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The above-described preferred embodiments and features of the invention can be combined with one another. Other advantageous developments of the invention are disclosed in the subclaims or result from the following description of preferred embodiments of the invention in conjunction with the appended figures, in which:

(2) FIG. 1 is a diagrammatic cross-sectional view of a textile hose for a line arrangement;

(3) FIG. 2 is a diagrammatic cross-sectional view of a textile hose that encloses an inner line for a line arrangement;

(4) FIG. 3 is a diagrammatic cross-sectional view of a textile hose that encloses an inner line for a line arrangement;

(5) FIG. 4 is a diagrammatic cross-sectional view of a textile hose that encloses an inner line with insulating material that lies in between for a line arrangement;

(6) FIG. 5 is a diagrammatic cross-sectional view of a textile hose that encloses an inner line for a line arrangement; and

(7) FIG. 6 is a waste heat utilization system for a motor vehicle.

DETAILED DESCRIPTION OF THE PRESENTLY PREFERRED EMBODIMENTS

(8) The embodiments shown in the figures coincide in part, with the result that similar or identical parts are provided with the same reference numerals and reference is also made to the description and the figures of the other embodiments in order to explain them, so as to avoid repetitions.

(9) FIG. 1 shows a diagrammatic cross-sectional view of a line configured as a textile hose 1 for conducting a fluid medium. The textile hose 1 has a textile structure 1.1, in particular a woven textile structure, and a medium-resistant inner sheath 1.2. The textile structure 1.1 encloses the inner sheath 1.2. The inner sheath 1.2 serves to conduct and therefore to come into contact with the fluid medium and is expediently configured to ensure the sealed state of the textile hose 1. To this end, the inner sheath 1.2 can be configured from an elastomer. In contrast, the textile structure 1.1 expediently serves to absorb the forces of the pressure of the fluid medium.

(10) In the embodiment shown in FIG. 1, the textile hose 1 itself, in particular its inner sheath 1.1, serves to conduct the fluid medium. A separate inner line for conducting the fluid medium, such as a stainless steel pipe or a hydraulic line, is not present.

(11) FIG. 2 shows a diagrammatic cross-sectional view of a textile hose 1 that encloses an inner line 2. The textile hose 1 can be constructed as in the embodiment described with reference to FIG. 1.

(12) The textile hose 1 is of dimensionally stable configuration, preferably by a spiral configured, for example, as a plastic spiral and can be woven into the textile structure 1.1.

(13) In contrast to the embodiment which is shown in FIG. 1, the textile hose 1 does not come into contact with the fluid medium in a normal operating state, since the fluid medium is conducted by the inner line 2 in the normal operating state. The inner line 2 can be, for example, a stainless steel pipe or a hydraulic hose for conducting the fluid medium.

(14) In the embodiment shown in FIG. 2, the textile hose 1 serves, in particular, in the case of a leak of the inner line 2 (for example, a burst or another leak), to conduct the fluid medium that exits therefrom to a safe region, in particular a region at a lower temperature.

(15) FIG. 3 shows a diagrammatic cross-sectional view of a textile hose 1 that encloses an inner line 2. The embodiment shown in FIG. 3 coincides for the large part with the embodiment shown in FIG. 2, the textile hose 1 in FIG. 3 not being of dimensionally stable configuration, but rather of dimensionally flexible configuration and therefore, as it were, without a substantial inherent rigidity.

(16) FIG. 4 shows a diagrammatic cross-sectional view of a textile hose 1 that encloses an inner line 2. One special feature of this is that insulating material 3 is arranged between the textile hose 1, in particular its inner sheath 1.2, and the inner line 2, with the result that the region between the inner sheath 1.2 and the inner line 2 is filled by way of the insulating material 3.

(17) FIG. 5 illustrates a diagrammatic cross-sectional view of a textile hose 1 that encloses an inner line 2. One special feature is that the inner line 2 is likewise configured as a textile hose 1 with a textile structure 1.1 and an inner sheath 1.2. As a consequence, the line is formed by way of two textile hoses 1, of which one textile hose 1 runs within another textile hose 1, with the result that, in the case of a leak of the inner textile hose 1, the outer textile hose 1 preferably ensures that the medium is retained and/or conducted to a predefined location. FIG. 6 shows a line arrangement L for a waste heat utilization system for converting waste heat of a motor vehicle internal combustion engine into utilizable energy, expediently by a steam circuit.

(18) The waste heat utilization system comprises an evaporator 10, an expansion machine (expander) 11, a condenser 12, and a delivery device 13, for example a feed pump, for delivering the fluid medium.

(19) The line arrangement L which is shown in FIG. 6 can expediently be divided into the regions A, B, C and D.

(20) Region A identifies a low temperature/high pressure region (LT/HP) or a region from the outlet of the feed pump 13 as far as the inlet of the evaporator 10. An operating temperature level of from 60? C. to 120? C. and an operating pressure level of from 10 barabs to 40 barabs are customary there.

(21) A line construction according to FIG. 1 can be used, a dimensionally stable or non-dimensionally stable textile hose 1 being possible on account of the low temperatures. A line construction according to FIG. 2 or 3 can also be used, preferably with a dimensionally stable variant, or according to FIG. 5. The embodiment according to FIG. 2, 3, or 5 may be suitable, in particular, where a leak has to be avoided for safety reasons. A medium jet which escapes from the inner line 2 (for example, stainless steel pipe, hydraulic hose or textile hose 1) can be retained and conducted to a non-critical location by way of the enclosing textile hose 1. For example, it can thus be ensured that, in the case of a leak, no flammable medium comes into contact with a hot exhaust gas manifold or turbocharger, but rather is discharged to a cold region.

(22) An embodiment according to FIG. 4 is not expedient on account of the low temperatures, the line construction according to FIG. 1 per se already having a higher insulating action than, for instance, a stainless steel line.

(23) Region B identifies a high temperature/high pressure region (HT/HP) or a region from the outlet of the evaporator 10 as far as the inlet of the expansion machine 11. An operating temperature level of from 180? C. to 250? C. and an operating pressure level of from 10 barabs to 40 barabs are customary there.

(24) A line construction according to FIG. 4 can be used, it being possible for the inner line 2 to be a stainless steel line, for example, on account of the high temperatures. The textile hose 1 can be of dimensionally stable or non-dimensionally stable configuration. On account of the enclosing textile hose 1, the embodiment according to FIG. 4 may be suitable, in particular, where a leak of the medium has to be avoided for safety reasons. A medium vapour, which escapes from the inner line 2 into the insulating material 3, can be retained and conducted to a non-critical location by way of the enclosing textile hose 1. For example, it can be thus ensured that, in the case of a leak, no flammable medium vapour comes into contact with a hot exhaust gas manifold or turbocharger, but rather is discharged to a cold region.

(25) A line construction according to FIG. 1, 2, or 3 is not expedient on account of the required insulation.

(26) Region C identifies a high temperature/low pressure region (HT/LP) or a region from the outlet of the expansion machine 11 as far as the inlet of the condenser 12. An operating temperature level of from 120? C. to 250? C. and an operating pressure level of from 0.7 barabs to 5 barabs are customary there.

(27) A line construction according to FIG. 1 can be used, a dimensionally stable textile hose 1 being advantageous on account of the temperatures. Furthermore, an embodiment according to FIG. 2 or 3 can be used. The line construction according to FIG. 2 or 3 may be suitable, in particular, where a leak has to be avoided for safety reasons. A medium jet that escapes from the inner line 2 can be retained and conducted to a non-critical location by way of the enclosing textile hose 1. For example, it can thus be ensured that, in the case of a leak, no flammable medium comes into contact with a hot exhaust gas manifold or turbocharger, but rather is discharged to a cold region.

(28) An embodiment according to FIG. 4 is not expedient on account of the heat dissipation which is desired in region C.

(29) Region D identifies a low temperature/low pressure region (LT/LP) or a region from the outlet of the condenser 12 as far as the inlet of the feed pump 13. An operating temperature level of from 60? C. to 120? C. and an operating pressure level of from 0.7 barabs to 5 barabs are customary there.

(30) A line construction according to FIG. 1 can be used, a dimensionally stable textile hose 1 being possible on account of the low temperatures. Furthermore, an embodiment according to FIG. 2 or 3 is possible, a dimensionally stable textile hose 1 once again being possible. Furthermore, an embodiment according to FIG. 5 is possible. The embodiment according to FIG. 2, 3 or 5 may be suitable, in particular, where a leak has to be avoided for safety reasons. A medium jet which escapes from the inner line 2 (for example, a stainless steel pipe, hydraulic hose or textile hose 1) can be retained and conducted to a non-critical location by way of the enclosing textile hose 1. For example, it can be thus ensured that, in the case of a leak, no flammable medium comes into contact with a hot exhaust gas manifold or turbocharger, but rather is discharged to a cold region.

(31) A line construction according to FIG. 2 is also possible, it being possible for a non-dimensionally stable and therefore dimensionally flexible textile hose 1 to be used. A vacuum is usually produced when cooling the medium in the line or lines, by way of which vacuum medium continues to flow from a compensating container into the lines (switching-off operation). In the case of the embodiment as a non-dimensionally stable, expediently elastic textile hose 1, the line can contract, as a result of which the compensating container can be of smaller dimensions or can be dispensed with.

(32) A line construction according to FIG. 4 is not expedient on account of the low temperatures, the embodiment as a textile hose 1 according to FIG. 1 per se already having a higher insulating action than, for instance, a stainless steel line.

(33) The invention is not restricted to the above-described preferred embodiments. Rather, a multiplicity of variants and modifications are possible which likewise use the concept of the invention and therefore likewise fall within the scope of protection. Moreover, the invention also claims protection for the subject matter and the features of the subclaims, independently of the features and claims which are referred to.

(34) Thus, while there have shown and described and pointed out fundamental novel features of the invention as applied to a preferred embodiment thereof, it will be understood that various omissions and substitutions and changes in the form and details of the devices illustrated, and in their operation, may be made by those skilled in the art without departing from the spirit of the invention. For example, it is expressly intended that all combinations of those elements and/or method steps which perform substantially the same function in substantially the same way to achieve the same results are within the scope of the invention. Moreover, it should be recognized that structures and/or elements and/or method steps shown and/or described in connection with any disclosed form or embodiment of the invention may be incorporated in any other disclosed or described or suggested form or embodiment as a general matter of design choice. It is the intention, therefore, to be limited only as indicated by the scope of the claims appended hereto.