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Hydraulic oil filter system for a motor vehicle transmission

A technology of motor vehicle transmission and filtration system, applied in the field of pressure oil filtration system and hydraulic transmission, which can solve the problems of large pressure loss of oil filter and achieve the effect of small oil purity level

Inactive Publication Date: 2018-10-23
IBS FILTRAN KUNST METALLERZEUGNISSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of finer filter media has the disadvantage that the oil filter creates a greater pressure loss in the system

Method used

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  • Hydraulic oil filter system for a motor vehicle transmission
  • Hydraulic oil filter system for a motor vehicle transmission
  • Hydraulic oil filter system for a motor vehicle transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] First refer to figure 1 The diagram in the figure 1 The results of a simulated pulsed operation of a pressure oil filtration system with an electrically actuatable oil pump are shown. The number of particles with a diameter of approximately 4 μm in the oil volume flow is plotted against the filtered volume flow (that is to say against the filtration time). as from figure 1As can be seen in the diagram shown in , firstly, a constant operation of the oil pump is provided within a constant oil volume flow for a total volume up to about 1200 liters. Then, the electric oil pump is actuated so that a pressure surge occurs in the system. The electric oil pump is arranged upstream of the first oil filter. Actuation of the electric oil pump causes a sudden increase in the number of particles in the oil volume flow and a subsequent, slower decrease in the number of particles in the oil volume flow. Other switching operations of the intermittently operated electric oil pump a...

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PUM

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Abstract

The invention relates to a hydraulic oil filter system (1) for a hydraulic transmission, in particular for a motor vehicle transmission, comprising at least one oil pump (4) that can be connected as needed and has a pressure side and a suction side, further comprising a pressure line (9) to a consumer (8), and at least a first oil filter (7) in the pressure line (9) on the pressure side of the oilpump (4), characterized in that means for damping pressure surges during intermittent operation of the oil pump (4) are provided in the pressure line (9) upstream of the first oil filter (7) in the direction in which the oil flows.

Description

technical field [0001] The invention relates to a pressurized oil filter system for a hydraulic transmission, in particular for a motor vehicle transmission, and to a motor vehicle transmission having at least one electric oil pump that can be activated when the engine is switched off. Background technique [0002] In motor vehicle transmissions, electric oil pumps are increasingly being used because they can be controlled as required in order to improve the efficiency of the transmission. [0003] Furthermore, in modern motor vehicles with automatic start-stop control, the transmission oil circuit needs to be maintained even when the combustion engine is at rest. [0004] Furthermore, the working components of a pressure oil system on a motor vehicle transmission may include the hydraulic actuating elements of the motor vehicle, control cylinders, etc., which must be supplied with a certain constant pressure. [0005] Usually, the pressurized oil system of the pressure sid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H57/04F16H61/00F15B21/041
CPCF16H57/0404F16H57/0435F16H57/0436F16H61/0031F16K15/023F15B2211/615F15B2211/30505F15B21/041F15B13/0401F15B13/027F16H57/0402B01D35/147F01M2001/1092B01D35/153B01D35/1573F16N2039/007F01M2001/1007F16N39/06F01M2001/1085B01D27/103
Inventor W·施道伯格
Owner IBS FILTRAN KUNST METALLERZEUGNISSE