# US 5,346,441 A · Combination of two-stator-rotor units with a connecting gear unit therebetween > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,346,441 A - Document ID: US5346441A - Status: Granted - Kind: A - Application number: 08/012,592 - Filed: 1993-02-03 - Granted: 1994-09-13 - Earliest claimed: 1992-02-04 - Assignees: Fichtel & Sachs AG - Inventors: Walter Kurz; Reinhard Deppert; Wolfgang Baier; Manfred Lutz - Web page: https://patentgrep.com/patent/US5346441A ## CPC - F02B 67/06: driven by means of chains, belts, or like endless members - F16H 61/00: Control functions within {control units of} change-speed- or reversing-gearings for conveying rotary motion {; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing} - F02B 2275/06: Endless member is a belt - F16H 3/54: one of the central gears being internally toothed and the other externally toothed - F16H 55/36: Pulleys (with features essential for adjustment F16H55/52) - F16H 2061/0046: {Details of fluid supply channels, e.g. within shafts, for supplying friction devices or transmission actuators with control fluid} - F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G) - F16H: GEARING ## Abstract According to an illustrative example of the present invention, an internal combustion engine is provided with a gear box. This gear box is driven by an end portion of the crank shaft. A belt pulley is provided around the axis of the gearbox. The belt pulley drives through a belt an electric power generator. The gear box contains a planetary gear of variable transmission ratio. The change of transmission ratio is effected by an hydraulically operated clutch. The hydraulically operated clutch is actuated by a hydraulic actuating device. The hydraulic actuating device is actuated by oil pressure. The oil pressure is obtained by a hydraulic pump integrated into the gear box. Further components of the circuitry containing the pump and the hydraulic actuating device are provided outside the gear box. These external components are carried by a carrier plate. This carrier plate contains side by side channels of the hydraulic circuitry. Simultaneously, the carrier plate acts as a torque support for the gear box which is mounted on the end portion of the crank shaft. ## Claims ### Claim 1 A combination of a first stator-rotor unit (10,12a) having first stator means (10) and first rotor means (12a) rotatable about a first rotor axis (A1), of at least one second stator-rotor unit (68) having second stator means (68b) and second rotor means (68c) rotatable about a second rotor axis (A2), and of a connecting gear unit (16) having a gear means compartment (52), a first terminal member (18a) connected for common rotation with said first rotor means (12a) about said first rotor axis (A1), a second terminal member (24) in driving connection with said second rotor means (68c) and transmission-ratio-changeable transmission gear means (18) within said gear means compartment (52), operating circuitry means having a plurality of circuit components (44,80, 46,54,72,80p) allocated to said connecting gear unit (16), an internal group (44,80,46) of said circuit components being accommodated within said gear means compartment (52), an external group (54,72,80p) of said circuit components being provided outside said gear means compartment (52), said external group (54,72,80p) of circuit components being carried by a plate-shaped carrier unit (42) having a main plane (MP) substantially orthogonal with respect to said first rotor axis (A1) and being connected to a stationary compartment confining unit (42a,40) participating in confining said gear means compartment (52), said plate-shaped carrier unit (42) including a plurality of connecting channels (74,76,78,80,84), said connecting channels (74, 76,78,80,84) having longitudinal axes substantially lying in said main plane (MP), said connecting channels (74,76, 78,80,84) connecting respective internal (44,46,80) and external (54,72,80p) circuit components. ### Claim 2 (depends on 1) A combination as set forth in claim 1, said plate-shaped carrier unit (42) having a plate thickness substantially corresponding to the hollow cross-sectional area of said connecting channels (74,76,78, 80,84) increased by the necessary wall thickness of channel confining walls confining said connecting channels (74,76,78,80,84). ### Claim 3 (depends on 1) A combination as set forth in claim 1, said plate-shaped carrier unit (42) being elongate in a direction (B) substantially radial with respect to said first rotor axis (A1), said connecting channels (74,76, 78,80,84) being substantially parallel to each other along at least a part of their respective lengths. ### Claim 4 (depends on 1) A combination as set forth in claim 1, said plate-shaped carrier unit (42) being connected by torque support means (56,58) with said first stator means (10) for preventing rotation of said stationary compartment confining unit (42a,40) about said first rotor axis (A1). ### Claim 5 (depends on 1) A combination as set forth in claim 1, said circuitry means comprising a liquid reservoir chamber (54a), a pump unit (44), a liquid space (80) within said gear means compartment (52), a liquid operated clutch actuation unit (46) within said gear means compartment (52) for actuating a transmission-ratio-change-clutch (32) of said transmission-ratio-changeable transmission gear means (18) and a pump delivery control valve unit (72) for providing a variable pump delivery pressure, said variable pump delivery pressure being operatively connected with said liquid operated clutch actuation unit (46). ### Claim 6 (depends on 5) A combination as set forth in claim 5, said pump unit (44) and said liquid operated clutch actuation unit (46) being provided within said gear means compartment (52), said reservoir chamber (54a), said pump delivery control valve unit (72) and possibly a filter unit (80b) being external circuit components. ### Claim 7 (depends on 6) A combination as set forth in claim 6, a first liquid conducting channel (76) connecting pump delivery means (44c) with inlet means (76a) of said pump delivery control valve unit (72), a second liquid conducting channel (78) connecting outlet means of said pump delivery control valve unit (72) with said gear means compartment (52), a third liquid connecting channel (74) connecting said reservoir chamber (54a) with pump feed means of said pump (44), a fourth liquid conducting channel (80) connecting said liquid space (79) within said compartment (52) with a liquid space (54a) within said reservoir chamber (54a). ### Claim 8 (depends on 7) A combination as set forth in claim 7, a gas exchange channel (84) connecting a liquid free space (52c) of said compartment (52) with a liquid free space (54b) of said reservoir chamber (54a). ### Claim 9 (depends on 1) A combination as set forth in claim 1, at least part of said connecting channels (74,76,78, 80,84) being connected to to respective circuit components by connecting bores (74h,76h,78h,80h,84h) substantially parallel with said first rotor axis (A1). ### Claim 10 (depends on 1) A combination as set forth in claim 1, said first stator-rotor unit (10,12a) having stator wall means (10) substantially orthogonal with respect to said first rotor axis (A1), said gear unit (16) having a first end portion adjacent a side of said stator wall means (10) remote from said first rotor means (12a) and a second end portion on the same side of said stator wall means (10) but more remote therefrom along said first rotor axis (A1), said plate-shaped carrier unit (42) being located adjacent one of said first and second end portions. ### Claim 11 (depends on 10) A combination as set forth in claim 10, external circuit components (54,72,80p) being located on said plate-shaped carrier unit (42) in overlapping relationship with said connecting gear unit (16) along said first rotor axis (A1). ### Claim 12 (depends on 1) A combination as set forth in claim 1, said second terminal member (24) of said connecting gear unit (16) comprising one of a belt pulley (24) and a chain sprocket rotatable about said first rotor axis (A1), a respective closed loop belt or chain connecting said belt pulley (24) or chain sprocket with one of a further belt pulley (66) and chain sprocket, respectively, of said second rotor means (68c), at least part of said external group (54,72,80p) of components is being located inside said closed loop belt or chain, respectively. ### Claim 13 (depends on 1) A combination as set forth in claim 1, said plate-shaped carrier unit (42) comprising a base plate (42b) with the connecting channels (74,76,78,80,84) recessed therein and a cover plate (42c) covering the connecting channels (74,76,78,80,84) of said base plate (42b). ### Claim 14 (depends on 1) A combination as set forth in claim 1, said plate-shaped carrier unit (142) comprising two cover plates (142m,142o) and an intermediate plate (142n) therebetween, said intermediate plate (142n) being provided with slots therethrough, said slots being covered by said cover plates (142m,142o) so as to establish said connecting channels (174,176,178,180,184) in cooperation with said cover plates (142m,142o). ### Claim 15 (depends on 1) A combination as set forth in claim 1, said plate-shaped carrier unit (42) comprising a plurality of sandwiched layer members(42b,42c). ### Claim 16 (depends on 15) A combination as set forth in claim 15, said layer members (42b,42c) being soldered to each other. ### Claim 17 (depends on 15) A combination as set forth in claim 15, said layer members (42b,42c) being bonded to each other by adhesive means. ### Claim 18 (depends on 15) A combination as set forth in claim 15, said layer members (42b,42c) being welded to each other. ### Claim 19 (depends on 1) A combination as set forth in claim 1, said plate-shaped carrier member (42) being exposed to heat exchange with surrounding air. ### Claim 20 (depends on 15) A combination as set forth in claim 15, at least one of said sandwiched layer members being integrally formed with chamber wall means confining at least one of said reservoir chamber and a valve unit chamber. ### Claim 21 (depends on 15) A combination as set forth in claim 15, at least one of said sandwiched layer members (42b,42c) being the result of a non-cutting shaping process, such as casting, die-casting, coining, stamping or deep-drawing. ### Claim 22 (depends on 1) A combination as set forth in claim 1, said first stator-rotor unit (10,12a) being an internal combustion engine, said at least one second stator-rotor unit (68) being an auxiliary power driven unit, such as an electric power generator. ### Claim 23 (depends on 1) A combination as set forth in claim 1, said first stator-rotor unit being an auxiliary power driven unit of an internal combustion engine, said second stator-rotor unit being an internal combustion engine. ### Claim 24 (depends on 9) A combination as set forth in claim 9, at least a part of said connecting bores (74h,76h,78h, 80h,84h) being arranged along a substantially circular arc about said axis (A1). ### Claim 25 A combination of a first stator unit (10,12a) having first stator means (10) and first rotor means (12a) rotatable about a first rotor axis (A1), of at least one second stator-rotor unit (68) having second stator means (68b) and second rotor means (68c) rotatable about a second rotor axis (A2), and of a connecting gear unit (16) having a gear means compartment (52), a first terminal member (18a) connected for common rotation with said first rotor means (12a) about said first rotor axis (A1), a second terminal member (24) in driving connection with said second rotor means (68c) and transmission-ratio-changeable transmission gear means (18) within said gear means compartment (52), operating circuitry means having a plurality of circuit components (44,80,46,54,72,80p) allocated to said connecting gear unit (16), an internal group (44,80,46) of said circuit components being accommodated within said gear means compartment (52), an external group (54,72,80p) of said circuit components being provided outside said gear means compartment (52), said external group (54,72,80p) of circuit components being carried by a plate-shaped carrier unit (42) having a main plane (MP) substantially orthogonal with respect to said first rotor axis (A1) and being connected to a stationary compartment confining unit (42a,40) participating in confining said gear means compartment (52), said plate-shaped carrier unit (42) including a plurality of connecting channels (74,76,78,80,84), said second terminal member (24) of said connecting gear unit (16) comprising one of a belt pulley (24) and a chain sprocket rotatable about said first rotor axis (A1), a respective closed loop belt or chain connecting said belt pulley (24) or chain sprocket with one of a further belt pulley (66) and chain sprocket, respectively, of said second rotor means (68c), at least part of said external group (54,72,80p) of components being located inside said closed loop belt or chain, respectively. ### Claim 26 For a combination of a first stator-rotor unit (10,12a) having first stator means (10) and first rotor means (12a) rotatable about a first rotor axis (A1), of at least one second stator-rotor unit (68) having second stator means (68b) and second rotor means (68c) rotatable about a second rotor axis (A2), and of a connecting gear unit (16) having a gear means compartment (52), a first terminal member (18a) connected for common rotation with said first rotor means (12a) about said first rotor axis (A1), a second terminal member (24) in driving connection with said second rotor means (68c) and transmission-ratio-changeable transmission gear means (18) within said gear means compartment (52), operating circuitry means having a plurality of circuit components (44,80,46,54,72,80p) allocated to said connecting gear unit (16), an internal group (44,80,46) of said circuit components being accommodated within said gear means compartment (52), an external group (54,72,80p) of said circuit components being provided outside said gear means compartment (52), said external group (54,72,80p) of circuit components being carried by a plate-shaped carrier unit (42) having a main plane (MP) substantially orthogonal with respect to said first rotor axis (A1) and being connected to a stationary compartment confining unit (42a,40) participating in confining said gear means compartment (52), said plate-shaped carrier unit (42) including a plurality of connecting channels (74,76,78,80,84), said connecting channels (74,76,78,80,84) having longitudinal axes substantially lying in said main plane (MP), said connecting channels (74,76,78,80,84) connecting respective internal (44,46,80) and external (54,72,80p) circuit components, a connecting gear unit (16) having a gear means compartment (52), a first terminal member (18a) connectable for common rotation with said first rotor means (12a) about said first rotor axis (A1), a second terminal member (24) connectable for common rotation with said second rotor means (68c) and transmission-ratio-changeable transmission gear means (18) within said gear means compartment (52), said external group (54,72,80p) of circuit components being carried by a plate-shaped carrier unit (42) having a main plane (MP) substantially orthogonal with respect to said first rotor axis (A1) and being connected or connectable to a stationary compartment confining unit (42a,40) participating in confining said gear means compartment (52), said plate-shaped carrier unit (42) including a plurality of connecting channels (74,76,78,80,84), said connecting channels (74,76,78,80,84) having longitudinal axes substantially lying in said main plane (MP). ### Claim 27 (depends on 9) A combination as set forth in claim 9, said connecting channels (74,76,78,80,84) having end portions adjacent said first rotor axis, said end portion diverging towards said first rotor axis (A1).