公开(公告)号：EP4015873A1

公开(公告)日：2022-06-22

申请号：EP20215511.5

申请日：2020-12-18

申请人： VOLVO TRUCK CORPORATION

发明人： HAGERMAN, Henrik

IPC分类号： F16H55/17 ,  F16H57/04

摘要： The present disclosure relates to a gearwheel (100) connectable to a transmission shaft of a vehicle gear transmission arranged in a gearbox housing, the gear wheel being configured to be lubricated by a lubricant in a lubricant reservoir of the gearbox housing, wherein the gearwheel comprises a first axial end surface (102); a second axial end surface (104) arranged on an opposite side of the gearwheel relative to the first axial end surface; and a plurality of gear teeth (106) arranged circumferentially on the gearwheel and positioned between the first (102) and second (104) axial end surfaces; wherein the first axial end surface (102) comprises a plurality of angularly spaced protrusions (108) extending axially from the first axial end surface in a direction of a surface normal of the first axial end surface (102).

公开(公告)号：EP4375542A1

公开(公告)日：2024-05-29

申请号：EP22209683.6

申请日：2022-11-25

申请人： Volvo Truck Corporation

发明人： HAGERMAN, Henrik

IPC分类号： F16H57/04 ,  F16H3/091 ,  F16H37/04 ,  F16H63/00

CPC分类号： F16H57/0409 ,  F16H57/0435 ,  F16H57/0447 ,  F16H57/045 ,  F16H57/0441 ,  F16H57/0446 ,  F16H57/0423 ,  F16H3/0915 ,  F16H57/0457 ,  F16H37/046 ,  F16H2063/00520130101 ,  F16H2200/00620130101 ,  F16H2200/008620130101

摘要： This control system (100), for controlling an oil level in a gearbox of a vehicle, comprises a supply line (102), which is configured to be connected to a pressurized upstream oil supply (54) of the gearbox, a return line (104), a first valve (106) and a second valve (108). The first and second valves are respectively controlled by a first fork (48A) and a second fork (48B) of the gearbox. The return line is connected to the supply line through the first valve and the second valve, which are arranged in serial, the first and second valves being both in the open position when the first and second forks are together in a direct drive configuration that engages a direct drive gear selection of the gearbox, so that the return line is pressurized when both valves are open and when the supply line is pressurized. The control system comprises a flow control unit (112), which is configured to lower the oil level in an oil sump of the gearbox when the return line is pressurized.

公开(公告)号：EP4119817A1

公开(公告)日：2023-01-18

申请号：EP21185795.8

申请日：2021-07-15

申请人： VOLVO TRUCK CORPORATION

发明人： HAGERMAN, Henrik ,  HEDMAN, Anders ,  WIKSTRÖM, Anna

IPC分类号： F16H57/04

摘要： The invention relates to an arrangement for lubricating a gear (503; 603; 703; 803) in a toothed gearing comprising a shaft (501; 601; 701; 801) on which the gear (503; 603; 703; 803) is arranged. An engaging ring (502; 602; 702; 802) with a central portion (512; 612; 712; 812) is arranged around said shaft (501; 601; 701; 801) and comprises a surface (526; 626; 726; 826) facing and spaced from an end surface (527; 627; 727; 827) of the gear (503; 603; 703; 803) creating a gap (533; 633; 733; 833) for guiding lubricant to the gear, and at least one first duct (531, 532; 525; 631, 632; 625; 731, 732; 725; 831, 832; 825) for lubricant, whereby said duct has at least one opening into the gap (533; 633; 733; 833). The component comprises an annular portion (528; 628; 728; 828) with an inner peripheral surface mounted onto an outer peripheral surface of a shoulder (530; 630; 730; 830) on the gear; where axial discontinuities (534; 634; 734; 834) are provided between the shoulder (530; 630; 730; 830) and the annular portion of the component for guiding and distributing lubricant to the roots of the gear (503; 603; 703; 803).