# US 11,441,669 B2 · Hydraulic control system and vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,441,669 B2 - Document ID: US11441669B2 - Status: Granted - Kind: B2 - Application number: 17/272,003 - Filed: 2019-08-28 - Published: 2021-06-24 - Granted: 2022-09-13 - Earliest claimed: 2018-08-28 - Assignees: Great Wall Motor Company Limited - Applicants: Great Wall Motor Company Limited - Inventors: Ralf Trutschel; Huaxue Liu; Guangqing Tang; Wei Zhang; Lin Zhou - Web page: https://patentgrep.com/patent/US11441669B2 ## CPC - F16H 57/0413: {Controlled cooling or heating of lubricant; Temperature control therefor} - F16H 57/0435: {Pressure control for supplying lubricant; Circuits or valves therefor} - F16H 57/0439: {using multiple pumps with different power sources or a single pump with different power sources, e.g. one and the same pump may selectively be driven by either the engine or an electric motor} - F16H 57/0446: {the supply forming part of the transmission control unit, e.g. for automatic transmissions} - F16H 61/0031: {using auxiliary pumps, e.g. pump driven by a different power source than the engine} - F16H 61/0267: {Layout of hydraulic control circuits, e.g. arrangement of valves} - B60Y 2400/428: Double clutch arrangements; Dual clutches - F16H 61/0025: {Supply of control fluid; Pumps therefor} - F16H 2061/0034: {Accumulators for fluid pressure supply; Control thereof} - F16H 2061/0037: {characterised by controlled fluid supply to lubrication circuits of the gearing} - F16H: GEARING - B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY ## Abstract A hydraulic controlling system including: a cooling and lubricating oil line and a main controlling oil line; an oil-liquid storage; a first pump, wherein an inlet of the first pump is connected to the oil-liquid storage and an outlet of the first pump is connected to the main controlling oil line; a second pump, wherein an inlet of the second pump is connected to the oil-liquid storage and an outlet of the second pump selectively communicates with the cooling and lubricating oil line or the main controlling oil line; and a gearbox-gear-shifting oil line including a gear-shifting-pressure regulating valve, a plurality of gear-shifting-flow-rate controlling valves and a plurality of gear-shifting selector valves. The gear-shifting-flow-rate controlling valves are connected to the main controlling oil line via the gear-shifting-pressure regulating valve. At least some of the gear-shifting-flow-rate controlling valves are connected to a gear-shifting executing piston via the gear-shifting selector valves. ## Claims ### Claim 1 A hydraulic controlling system, wherein the hydraulic controlling system comprises: a cooling and lubricating oil line (60) and a main controlling oil line (70); an oil-liquid storage (1); a first pump (4), wherein an inlet of the first pump (4) is connected to the oil-liquid storage (1), and an outlet of the first pump (4) is connected to the main controlling oil line (70); a second pump (3), wherein an inlet of the second pump (3) is connected to the oil-liquid storage (1), and an outlet of the second pump (3) selectively communicates with the cooling and lubricating oil line (60) or the main controlling oil line (70); and a gearbox-gear-shifting oil line (73), wherein the gearbox-gear-shifting oil line (73) comprises a gear-shifting-pressure regulating valve (40), a plurality of gear-shifting-flow-rate controlling valves and a plurality of gear-shifting selector valves, the gear-shifting-flow-rate controlling valves are connected to the main controlling oil line (70) via the gear-shifting-pressure regulating valve (40), and at least some of the plurality of gear-shifting-flow-rate controlling valves are connected to a gear-shifting executing piston via the gear-shifting selector valves. ### Claim 2 (depends on 1) The hydraulic controlling system according to claim 1, wherein the hydraulic controlling system is configured to, in a gear-shifting starting stage, maintain an outputted pressure of the gear-shifting-pressure regulating valve (40) at a first preset pressure, and regulate gear-shifting flow rates by using the gear-shifting-flow-rate controlling valves, and the hydraulic controlling system is configured to, in a gear-shifting synchronizing stage, maintain a controlling source of the gear-shifting-flow-rate controlling valves unchanged, and increase the outputted pressure of the gear-shifting-pressure regulating valve (40). ### Claim 3 (depends on 1) The hydraulic controlling system according to claim 1, wherein a first port of the gear-shifting-pressure regulating valve (40) is connected to the oil-liquid storage (1), a second port of the gear-shifting-pressure regulating valve (40) is connected to the main controlling oil line (70), and a third port of the gear-shifting-pressure regulating valve (40) is connected to the gear-shifting-flow-rate controlling valves. ### Claim 4 (depends on 1) The hydraulic controlling system according to claim 1, wherein the gear-shifting-flow-rate controlling valves are solenoid valves, and the gear-shifting selector valves are mechanical valves. ### Claim 5 (depends on 1) The hydraulic controlling system according to claim 1, wherein the hydraulic controlling system further comprises: a switching solenoid valve (42), wherein a first port of the switching solenoid valve (42) is connected to the oil-liquid storage (1), a second port of the switching solenoid valve (42) is connected to the main controlling oil line (70), and a third port of the switching solenoid valve (42) is connected to controlling oil ports of the gear-shifting selector valves. ### Claim 6 (depends on 1) The hydraulic controlling system according to claim 1, wherein the hydraulic controlling system further comprises: a selector valve (7), wherein an inlet of the selector valve (7) is connected to the outlet of the second pump (3), a first outlet of the selector valve (7) is connected to the main controlling oil line (70), a second outlet of the selector valve (7) is connected to the cooling and lubricating oil line (60), and a controlling oil port of the selector valve (7) is connected to the main controlling oil line (70); and a main pressure regulating valve (12), wherein a first inlet of the main pressure regulating valve (12) is connected to the main controlling oil line (70), and a first outlet of the main pressure regulating valve (12) is connected to the cooling and lubricating oil line (60). ### Claim 7 (depends on 6) The hydraulic controlling system according to claim 6, wherein the cooling and lubricating oil line (60) comprises: a central cooling and lubricating line (61), wherein an inlet end of the central cooling and lubricating line (61) is connected to the second outlet of the selector valve (7), and is connected to the first outlet of the main pressure regulating valve (12); a first branch line (62), an inlet end of the first branch line (62) is connected to an outlet end of the central cooling and lubricating line (61), the first branch line (62) is provided with a first flow restriction orifice (18), and an outlet end of the first branch line (62) is adapted for being connected to a lubricating oil line (54) of a gearbox; a second branch line (63), wherein an inlet end of the second branch line (63) is connected to the outlet end of the central cooling and lubricating line (61), the second branch line (63) is provided with a second flow restriction orifice (19), and an outlet end of the second branch line (63) is adapted for being connected to a lubricating oil line for an electric motor (29) and an electric-motor clutch (28); and a third branch line (64), wherein the third branch line (64) is provided with a lubrication-flow-rate solenoid valve (20), a third flow restriction orifice (22), a lubrication selector valve (23) and a fourth flow restriction orifice (24), both of a first inlet and a second inlet of the lubrication-flow-rate solenoid valve (20) are connected to the outlet end of the central cooling and lubricating line (61), a first outlet of the lubrication-flow-rate solenoid valve (20) is adapted for being connected to a lubricating oil line of a main clutch, a second outlet of the lubrication-flow-rate solenoid valve (20) is connected to an inlet of the lubrication selector valve (23), an inlet of the third flow restriction orifice (22) is connected to the first outlet of the lubrication-flow-rate solenoid valve (20), an outlet of the third flow restriction orifice (22) is connected between the second outlet of the lubrication-flow-rate solenoid valve (20) and the inlet of the lubrication selector valve (23), an outlet of the lubrication selector valve (23) is connected to an inlet of the fourth flow restriction orifice (24), and an outlet of the fourth flow restriction orifice (24) is connected between the outlet of the second flow restriction orifice (19) and the lubricating oil line for the electric motor (29) and the electric-motor clutch (28). ### Claim 8 (depends on 7) The hydraulic controlling system according to claim 7, wherein the central cooling and lubricating line (61) comprises: an oil cooler (15) and a press filter (16), wherein an inlet of the oil cooler (15) is connected to the inlet end of the central cooling and lubricating line (61), an outlet of the oil cooler (15) is connected to an outlet of the press filter (16), and an outlet of the press filter (16) is connected to the outlet end of the central cooling and lubricating line (61); an oil-cooler by-pass valve (14), wherein an inlet of the oil-cooler by-pass valve (14) is connected to the inlet end of the central cooling and lubricating line (61), an outlet of the oil-cooler by-pass valve (14) is connected to the outlet end of the central cooling and lubricating line (61), and a controlling oil port of the oil-cooler by-pass valve (14) is connected to the inlet end of the central cooling and lubricating line (61); and a pressure limiting valve (21), wherein an inlet of the pressure limiting valve (21) and a controlling oil port of the pressure limiting valve (21) are connected to the outlet end of the central cooling and lubricating line (61), and an outlet of the pressure limiting valve (21) is connected to the inlet of the first pump (4). ### Claim 9 (depends on 1) The hydraulic controlling system according to claim 1, wherein the hydraulic controlling system further comprises: a clutching controlling oil line (71), wherein the clutching controlling oil line (71) comprises a plurality of clutch-pressure controlling solenoid valves, first ports of the clutch-pressure controlling solenoid valves are connected to the oil-liquid storage (1), second ports of the clutch-pressure controlling solenoid valves are connected to the main controlling oil line (70), and third ports of the clutch-pressure controlling solenoid valves are individually connected to corresponding clutches; and an electrohydraulic parking oil line (72), wherein the electrohydraulic parking oil line (72) is provided with a parking switching solenoid valve (30), a first port of the parking switching solenoid valve (30) is connected to the oil-liquid storage (1), a second port of the parking switching solenoid valve (30) is connected to the main controlling oil line (70), and a third port of the parking switching solenoid valve (30) is connected to a parking piston (31). ### Claim 10 (depends on 1) A vehicle, wherein the vehicle is a hybrid-power vehicle, and comprises the hydraulic controlling system according to claim 1. ### Claim 11 (depends on 2) The hydraulic controlling system according to claim 2, wherein a first port of the gear-shifting-pressure regulating valve (40) is connected to the oil-liquid storage (1), a second port of the gear-shifting-pressure regulating valve (40) is connected to the main controlling oil line (70), and a third port of the gear-shifting-pressure regulating valve (40) is connected to the gear-shifting-flow-rate controlling valves. ### Claim 12 (depends on 2) The hydraulic controlling system according to claim 2, wherein the gear-shifting-flow-rate controlling valves are solenoid valves, and the gear-shifting selector valves are mechanical valves. ### Claim 13 (depends on 3) The hydraulic controlling system according to claim 3, wherein the gear-shifting-flow-rate controlling valves are solenoid valves, and the gear-shifting selector valves are mechanical valves. ### Claim 14 (depends on 2) The hydraulic controlling system according to claim 2, wherein the hydraulic controlling system further comprises: a switching solenoid valve (42), wherein a first port of the switching solenoid valve (42) is connected to the oil-liquid storage (1), a second port of the switching solenoid valve (42) is connected to the main controlling oil line (70), and a third port of the switching solenoid valve (42) is connected to controlling oil ports of the gear-shifting selector valves. ### Claim 15 (depends on 3) The hydraulic controlling system according to claim 3, wherein the hydraulic controlling system further comprises: a switching solenoid valve (42), wherein a first port of the switching solenoid valve (42) is connected to the oil-liquid storage (1), a second port of the switching solenoid valve (42) is connected to the main controlling oil line (70), and a third port of the switching solenoid valve (42) is connected to controlling oil ports of the gear-shifting selector valves. ### Claim 16 (depends on 4) The hydraulic controlling system according to claim 4, wherein the hydraulic controlling system further comprises: a switching solenoid valve (42), wherein a first port of the switching solenoid valve (42) is connected to the oil-liquid storage (1), a second port of the switching solenoid valve (42) is connected to the main controlling oil line (70), and a third port of the switching solenoid valve (42) is connected to controlling oil ports of the gear-shifting selector valves. ### Claim 17 (depends on 2) The hydraulic controlling system according to claim 2, wherein the hydraulic controlling system further comprises: a selector valve (7), wherein an inlet of the selector valve (7) is connected to the outlet of the second pump (3), a first outlet of the selector valve (7) is connected to the main controlling oil line (70), a second outlet of the selector valve (7) is connected to the cooling and lubricating oil line (60), and a controlling oil port of the selector valve (7) is connected to the main controlling oil line (70); and a main pressure regulating valve (12), wherein a first inlet of the main pressure regulating valve (12) is connected to the main controlling oil line (70), and a first outlet of the main pressure regulating valve (12) is connected to the cooling and lubricating oil line (60). ### Claim 18 (depends on 3) The hydraulic controlling system according to claim 3, wherein the hydraulic controlling system further comprises: a selector valve (7), wherein an inlet of the selector valve (7) is connected to the outlet of the second pump (3), a first outlet of the selector valve (7) is connected to the main controlling oil line (70), a second outlet of the selector valve (7) is connected to the cooling and lubricating oil line (60), and a controlling oil port of the selector valve (7) is connected to the main controlling oil line (70); and a main pressure regulating valve (12), wherein a first inlet of the main pressure regulating valve (12) is connected to the main controlling oil line (70), and a first outlet of the main pressure regulating valve (12) is connected to the cooling and lubricating oil line (60). ### Claim 19 (depends on 2) The hydraulic controlling system according to claim 2, wherein the hydraulic controlling system further comprises: a clutching controlling oil line (71), wherein the clutching controlling oil line (71) comprises a plurality of clutch-pressure controlling solenoid valves, first ports of the clutch-pressure controlling solenoid valves are connected to the oil-liquid storage (1), second ports of the clutch-pressure controlling solenoid valves are connected to the main controlling oil line (70), and third ports of the clutch-pressure controlling solenoid valves are individually connected to corresponding clutches; and an electrohydraulic parking oil line (72), wherein the electrohydraulic parking oil line (72) is provided with a parking switching solenoid valve (30), a first port of the parking switching solenoid valve (30) is connected to the oil-liquid storage (1), a second port of the parking switching solenoid valve (30) is connected to the main controlling oil line (70), and a third port of the parking switching solenoid valve (30) is connected to a parking piston (31). ### Claim 20 (depends on 3) The hydraulic controlling system according to claim 3, wherein the hydraulic controlling system further comprises: a clutching controlling oil line (71), wherein the clutching controlling oil line (71) comprises a plurality of clutch-pressure controlling solenoid valves, first ports of the clutch-pressure controlling solenoid valves are connected to the oil-liquid storage (1), second ports of the clutch-pressure controlling solenoid valves are connected to the main controlling oil line (70), and third ports of the clutch-pressure controlling solenoid valves are individually connected to corresponding clutches; and an electrohydraulic parking oil line (72), wherein the electrohydraulic parking oil line (72) is provided with a parking switching solenoid valve (30), a first port of the parking switching solenoid valve (30) is connected to the oil-liquid storage (1), a second port of the parking switching solenoid valve (30) is connected to the main controlling oil line (70), and a third port of the parking switching solenoid valve (30) is connected to a parking piston (31).