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Fuel filter unit for diesel internal combustion engines

A diesel internal combustion engine and filter technology, which is applied to engine components, machines/engines, liquid fuel feeders, etc., can solve the problems of increasing the overall size of the filter unit, large cost, and expensive components

Active Publication Date: 2008-06-04
UFI FILTERS SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Said means located on top of the filter unit increases the overall size of the filter unit and makes installation of the filter unit on the engine difficult in particular applications since the operator has to remove the entire unit from the engine Complicated, if the device fails, it is equally complicated and expensive to replace the device
[0006] Also for this case the filter top is usually formed by casting from a metal alloy and the construction of the tubing and seat used to accommodate the device makes this element more expensive

Method used

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  • Fuel filter unit for diesel internal combustion engines
  • Fuel filter unit for diesel internal combustion engines
  • Fuel filter unit for diesel internal combustion engines

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Embodiment Construction

[0016] Said FIG. 1 shows a filter unit 1 comprising a cup-shaped housing 2 closed at the top by a cover 3 on which a fuel inlet pipe 4 and a fuel outlet pipe 5 are arranged.

[0017] The interior of the housing 2 houses an annular filter baffle comprising an upper end 60 and a lower end 61 having a central hole indicated by reference numerals 62 and 63 respectively.

[0018] The central hole 62 of the upper end 60 accommodates the rod 30 extending downwardly from the cover 3 at the pipe 4; Angular equidistant fins 7 branched from the lower surface.

[0019] Said housing 2 is provided in the lower part with a tubular hole 20 accommodating a bracket 8 inserted into a hole 63 extending inside the filter baffle.

[0020] Said support 8 carries, close to the hole 63 , means 9 for determining a clogging of the filter baffle 6 .

[0021] The filter baffle 6 and device 9 roughly divide the interior of the housing 2 into two independent chambers 10 and 11, wherein the first chamber 1...

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Abstract

For diesel internal combustion engines, an improved filter unit comprising a casing the interior of which is separated by a filtering baffle into two separate chambers to which a fuel inlet conduit and a fuel outlet conduit are connected respectively, with said unit there being associated a device for determining the degree of clogging of the filtering baffle; said device is located inside said casing and is positioned to be sensitive to the difference between the fuel pressure in said chambers.

Description

technical field [0001] The invention relates to a filter unit associated with a diesel internal combustion engine, in particular a filter unit having means for determining the degree of clogging of filter baffles of the filter unit. Background technique [0002] In order to properly operate an internal combustion engine, especially a diesel internal combustion engine, the fuel must be filtered before entering the engine in order to remove the impurities it contains. [0003] Fuel for diesel engines may contain a large amount of impurities, or contain more or less solid substances (especially paraffins) that have separated out due to the lower temperature. These impurities and solid matter can quickly clog the filters in the filter unit until the fuel is completely prevented from entering the engine. [0004] In order to overcome this drawback, filter units having means for determining the degree of clogging of the filter baffles have been devised in the same application. S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M37/22
CPCF02M37/22F02M37/223F02M37/30F02M37/26F02M37/40F02M37/42
Inventor G·吉隆迪
Owner UFI FILTERS SPA
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