Oil system, in particular oil system for a motor vehicle, with a low pressure branch and with a high pressure branch

摘要

The invention relates to an oil system (10), in particular an oil system for a motor vehicle, with a low pressure branch and with a high pressure branch, the oil system (10) • a high pressure pump (11) • a first oil reservoir (12); • a low pressure pump (13) • a second oil reservoir (14); and • has a directional valve (15) with a first and a second connection (151, 152), wherein • the high pressure pump (11) is hydraulically coupled to the first oil reservoir (12); • the low pressure pump (13) to the second oil reservoir ( 14) is hydraulically coupled, • in the first switching position of the directional valve (15) the first and the second connection (151, 152) are hydraulically separated from one another and in the second switching position of the directional valve (15) the first and the second connection (151, 152) are hydraulically connected to one another; the construction and cost expenditure is reduced in that • the directional valve (15) is hydraulically coupled with its first connection (151) to the pressure connection of the low-pressure pump (13); • the directional valve (15) with its second connection (152) is hydraulically coupled to the first oil reservoir (12) • the directional valve (15) is designed such that it assumes the first switching position when the pressure at the pressure connection of the high pressure p umpe (11) is below a certain threshold value, and the directional control valve (15) assumes the second switching position when the pressure at the pressure connection of the high pressure pump (11) is above the certain threshold value.