| 摘要 |
<p>System for lubrication and cooling of a gearbox (1) equipped with synchromeshes, the system (10) comprising : - an oil conduit (11), connected to oil channels (12) in the gearbox, - an oil pump (13) with a variable displacement, arranged in the oil conduit, - a manoeuvring device (19), for control of the displacement of the oil pump, - an electronic control device (20), for control of the manoeuvring device, and - a cooling device (14) connected to the oil conduit. When a shift event for change of gears in the gearbox has been initiated, or is intended to be initiated, the manoeuvring device is controlled to temporarily increase the displacement of the oil pump from a normal to an increased displacement level, to achieve a temporarily increased volume flow of transmission oil in the oil conduit and the oil channels during the shift event and thus a temporarily elevated cooling effect of the transmission oil flowing through the oil channels. The invention also pertains to a method for control of a flow of transmission oil in such a system.</p> |
