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Pressure oil filtration system for motor vehicle transmission

A filtration system and pressure oil technology, which is applied in the direction of fluid pressure actuation system components, filtration separation, cartridge filters, etc., can solve problems such as large pressure loss of oil filters, and achieve the effect of small oil purity grades

Inactive Publication Date: 2019-11-12
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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  • Pressure oil filtration system for motor vehicle transmission
  • Pressure oil filtration system for motor vehicle transmission
  • Pressure oil filtration system for motor vehicle transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] 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 1 As 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 ...

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PUM

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Abstract

The invention relates to a pressurized oil filter system (1) for a hydraulic transmission, in particular for a motor vehicle transmission, comprising at least one oil pump (4), which can be connected as required and has a pressure side and a suction side side, also includes a pressure line (9) leading to the load (8), and includes at least one first oil filter (7), which is located in the pressure line (9) on the pressure side of the oil pump (4) , characterized in that, in the pressure line (9), upstream of the first oil filter (7) in the direction of oil flow, means for damping pressure shocks during intermittent operation of the oil pump (4) are arranged.

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 Patents(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