1. A Coolant Pump arrangement for an internal-combustion engine of a motor vehicle, comprising: a bearing disposed inside the internal-combustion; a pump housing; a pumpshaft, one end of which is provided with a pump impeller; and wherein the pump shaft is essentially cantilevered by way of the bearing inside the engine, and the cantilevered bearing of the pump shaft takes place by use of a last engine shaft bearingarranged adjacent to the coolant pump arrangement.

2. The Coolant Pump arrangement according to claim 1, wherein the pump shaft is coaxially connected with an engine shaft.

3. The Coolant Pump arrangement according to claim 2, wherein the engine shaft is a camshaft.

4. The coolant pump arrangement according to claim 3, further comprising: a sealing device arranged between the pump housing and the pump shaft, by which sealing device, a centering takes place simultaneously.

5. The Coolant Pump arrangement according to claim 3 wherein for fixing the pump impeller and the pump shaft on the engine shaft by a screwed connection, the pump shaft has a hollow construction and the engine shaft has a thread at an end side.

6. The coolant pump arrangement according to claim 2, further comprising: a sealing device arranged between the pump housing and the pump shaft, by which sealing device, a centering takes place simultaneously.

7. The Coolant Pump arrangement according to claim 2 wherein for fixing the pump impeller and the pump shaft on the engine shaft by a screwed connection, the pump shaft has a hollow construction and the engine shaft has a thread at an end side.

8. The coolant pump arrangement according to claim 1, further comprising: a sealing device arranged between the pump housing and the pump shaft, by which sealing device, a centering takes place simultaneously.

9. The coolant pump arrangement according to claim 8, wherein for fixing the pump impeller and the pump shaft on the engine shaft by a screwed connection, the pump shaft has a hollow construction and the engine shaft has a thread at an endside.

10. The coolant pump arrangement according to claim 1, wherein for fixing the pump impeller and the pump shaft on the engine shaft by a screwed connection, the pump shaft has a hollow construction and the engine shaft has a thread at an endside.

11. A coolant pump arrangement for an internal-combustion engine of a motor vehicle, comprising: a bearing disposed inside the internal-combustion engine supporting a shaft; a pump housing; a pump shaft, one end of which is provided with apump impeller and another end is coupled to the shaft; and wherein the pump shaft is essentially cantilevered by way of the bearing inside the engine.

12. The coolant pump arrangement according to claim 11, wherein the cantilevered bearing of the pump shaft comprises a last engine shaft bearing arranged adjacent to the coolant pump arrangement.

13. The coolant pump arrangement according to claim 11, wherein the shaft is a camshaft.

14. The coolant pump arrangement according to claim 11, further comprising a sealing device arranged between the pump housing and the pump shaft for simultaneously sealing and centering the pump shaft.

15. The Coolant Pump arrangement according to claim 11, wherein the pump shaft is hollow and the engine shaft comprises a threaded end for fastening the pump shaft to the engine shaft.

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Coolant Pump