Operable transmission, working fluid for such a transmission, and method for commissioning the same

A transmission mechanism and fluid technology, applied in transmissions, gear transmissions, transmission parts, etc., can solve problems such as inferior hydrothermal characteristics, and achieve the effect of less structure space

Active Publication Date: 2009-05-20
MAGNA STEYR FAHRZEUGTECHN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The thermal properties of alkyl glycols, although better than those of oils, are not as good as those of water

Method used

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  • Operable transmission, working fluid for such a transmission, and method for commissioning the same
  • Operable transmission, working fluid for such a transmission, and method for commissioning the same

Examples

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Embodiment Construction

[0027] FIG. 1 shows an arbitrary standard transmission, here a front axle drive of a motor vehicle with a hypoid drive and a differential drive. It can likewise be used in transfer cases or reduction gears of drives of machines (for example in the food industry). The hypoid gear transmission mechanism 2 and the differential transmission mechanism 3 are located in the housing 1 . The hypoid gear transmission mechanism 2 is composed of a driving gear 4 and a ring gear 5 placed on a shaft 6 . The shaft 6 passes through a bearing 7, outside which a sealing ring 8 is attached. The differential gear 3 is also of conventional construction and is therefore not sectioned. Visible is an axle shaft 9 extending towards the gear.

[0028] There is an oil tank 10 below the inside of the housing, and the fluid level of the oil tank is indicated by 11 in the shutdown state. The ring gear is submerged in the oil sump 10 . Also, a filling opening, an air vent 13, an outlet 14 for lubricati...

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PUM

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Abstract

Disclosed is an operable transmission, comprising toothed wheels. In order to operate said transmission with a lubricant and coolant which is environmentally friendly while providing improved heat dissipation and temperature-independent viscosity, the transmission contains a mixture of water and a glycol or similar, in which graphite particles are suspended. Preferably, said mixture contains 40 to 60 percent per weight of the glycol and 2 to 25 percent by weight of graphite in the form of flaky graphite particles having a grain size of less than 12 micrometers, the remainder being composed of water and other admixtures and / or additives. Also disclosed are said lubricant and coolant as well as a method for starting a transmission operated with said lubricant and coolant.

Description

technical field [0001] The invention relates to an operable transmission with highly loaded gears, the housing of which forms a sump containing lubrication and coolant in which at least one gear is submerged. Such transmissions are used in different ways, in particular in motor vehicles as a transmission, as a transfer case in an all-wheel drive motor vehicle and as a main drive or differential drive. Background technique [0002] In highly loaded gears, even under the best lubricating conditions, loss heat occurs which must be dissipated. This is achieved either by a cooling circuit with a pump and an external cooler and a lubrication circuit, or by heat conduction via the gear housing to the environment. For this purpose, the housing of the transmission should have as large a surface as possible in order to increase the heat transfer surface swept by the driving wind. If the engine power is increased without providing more space for the transmission, the limit is quickly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M141/10C23C14/06F16H57/04
CPCF16H57/0483C23C14/0605F16H1/145C10M141/10F16H57/041F16H57/0413C10M169/04C10M111/00C10M2201/041C10M2201/0413C10M2207/0225C10M173/02Y10T29/49982Y10T74/2189C10N2020/06C10N2030/02C10N2030/54C10N2030/64C10N2040/044C10N2040/042C10N2040/02C10N2040/04C10M105/04F16H57/04C10M125/02
Inventor 弗朗兹·迈尔
Owner MAGNA STEYR FAHRZEUGTECHN
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