C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
C10M 173/00 (2006.01) F01M 7/00 (2006.01) F16H 57/04 (2010.01)
Patent
CA 2644049
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.
L'invention concerne un engrenage opérationnel à roues dentées fonctionnant avec une substance lubrifiante et réfrigérante écologique, qui permet une meilleure dissipation de la chaleur et dont la viscosité ne dépend pas de la température. Selon l'invention, cet engrenage contient un mélange d'eau et d'un glycol ou analogue, dans lequel des particules de graphite sont en suspension. Ce mélange contient de préférence 40 à 60 % en poids de glycol et 2 à 25 % en poids de graphite sous forme de particules floculeuses à taille de grains inférieure à 12 microns, le reste étant constitué d'eau et d'autres impuretés et/ou d'additifs. Cette invention concerne également la substance lubrifiante et réfrigérante ainsi qu'un procédé de mise en service d'un engrenage fonctionnant avec cette substance.
Brandt Kerstin B.
Magna Steyr Fahrzeugtechnik Ag & Co Kg
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