Lubricant supply mechanism for an internal combustion engine

Inactive Publication Date: 2006-09-21
DR ING H C F PORSCHE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007] The substantial hydraulic resistance of the oil cooler is removed from the main oil circulation and integrated into the second, rear pump stage, and the lubricant supply to consumers can be improved. Apart from a better lubricant supply to the principle consumer, the input of both oil pumps can be reduced, in sum, if, by way of the second pump stage, a smaller oil volume st

Problems solved by technology

Flow-operated consumption, for example by hydraulically-adjustable cam shaft plates or a hydraulically-operated valve hub switch, however, cannot be adversely affected on the basis of insufficient oil pressure or quantity.

Method used

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  • Lubricant supply mechanism for an internal combustion engine
  • Lubricant supply mechanism for an internal combustion engine

Examples

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Embodiment Construction

[0015] Front and rear chambers, which are designated in the following description as a first oil collection chamber 2a and a second oil collection chamber 2b, feed to a crankcase (not represented) of an internal combustion engine. In the schematic representation provided, an oil receiving case takes the form of an oil pan 2.

[0016] A first intake manifold 4 is placed into the first oil collection chamber 2a, and a second intake manifold is placed into the second oil collection chamber 2b. The intake manifolds 4 and 6 are respectively attached to suction sides of oil pumps 8 or pump stages 10. In the embodiment illustrated, both oil pumps 8 and 10 are combined into one double oil pump with two pump stages, and the first pump stage 8 is adjustable. Lubricant that is received in the second oil collection chamber 2b is pumped, with the help of the second pump stage 10, into the first oil collection chamber 2a. Lubricant in a circuit leading from the second oil collection chamber 2b circ...

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Abstract

In a lubricant supply mechanism for an internal combustion engine with an oil receiving case arranged under a crankcase, two chambers are constructed for exhausted oil. A first oil pump suctions lubricant from a first chamber and supplies the lubricant to a consumer, such as, for example, a crankshaft bearing or cam shaft bearing of the internal combustion engine. A second oil pump suctions the lubricant off from a second chamber and supplies the lubricant to the first chamber by way of an oil cooler for cooling the lubricant. The oil cooler defines part of a circuit providing for oil circulation produced by the second oil pump.

Description

[0001] This application claims the priority of prior German application 10 2005 012 073.3, filed Mar. 16, 2005, the entire disclosure of which is incorporated herein by reference. BACKGROUND AND SUMMARY OF THE INVENTION [0002] The present invention concerns a lubricant supply mechanism for an internal combustion engine including an oil receiving pan arranged under a crank case and constructed with first and second chambers designed for receiving exhausted oil. The mechanism further includes a first oil pump by which the oil is suctioned from the first chamber and provided to a consumer of the internal combustion engine, a second oil pump by which the oil is suctioned from the second chamber and provided to the first chamber, and an oil cooler for cooling the oil. [0003] German publication DE 101 59 106 A1 discloses an internal combustion engine with a crank case and an oil absorption case fastened to it. By means of an oil pump with two pump stages, in a first pump stage, oil to be ...

Claims

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Application Information

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IPC IPC(8): F01M5/00F01M1/02F01M11/02
CPCF01M1/02F01M5/002F01M2001/123F01M2011/0037
InventorREHR, ANTONIUS
OwnerDR ING H C F PORSCHE AG