Apparatus and method for lubricating and cooling of gear transmissions

Device arranged for lubrication and cooling of gear transmissions, with a feed line (2) for the supply of lubricating and cooling oil from an oil sump in a to the supply line (2) connected to the first in an injection pipe (3) channel (4), with at least one first nozzle (6) is connected for selective spraying of the lubricating and cooling oil in the first channel associated with (4) lubrication intensive ranges of the transmission, wherein the supply line (2) with at least one second channel (5) and at least one (with the second channel 5) associated second nozzle (21, 22, 23, 24) for selectively spraying in the second channel (5) assigned to lubrication intense regions (25), and wherein a control valve (15) is provided, via which the channels ( 4, 5) are switchable in such a way that (in a first position of the control valve 15) and only the first channel (in a second position of the control valve 15) in addition released the second channel is characterized in that the control valve (15) is switchable in dependence on the acting on the control valve (15) back pressure.