Stuttgart, Germany
Stuttgart, Germany

Mahle GmbH is an automotive parts manufacturer based in Stuttgart, Germany. It is one of the 30 largest automotive suppliers worldwide. As a manufacturer of components and systems for the combustion engine and its periphery, the company is one of the three largest systems suppliers worldwide for piston systems, cylinder components, valve train systems, air management systems, and liquid management systems.As of 2014, its 65,000 employees work in 120+ production plants and six research and development centers in Stuttgart, Northampton, Detroit, Tokyo, Shanghai and São Paulo. Worldwide, 3000 development engineers and technicians work as partners for Mahle's customers on products and systems focused on the development of the combustion engine. Wikipedia.


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The present invention relates to a method for producing a piston (10, 110) for an internal combustion engine having at least two piston components (11, 18; 111, 118), wherein at least two piston components (11, 18; 111, 118) are connected to each other along their corresponding abutting surfaces (23a, 24a, 23b, 24b) by at least one radially or axially circumferential laser weld seam (21, 22; 121, 122), said method having the following method steps: a) aligning the at least two piston components (11, 18; 111, 118) along their corresponding abutting surfaces (23a, 24a, 23b, 24b); b) activating a laser (25, 27) designed for a deep-welding method and aligning the laser beam (26, 28) emitted by the laser (25, 27) with a defined starting point (SP) in the region of the corresponding abutting surfaces (23a, 24a, 23b, 24b); c) increasing the power density (ramp-up) of the laser beam (26, 28) starting at the defined starting point (SP) for a defined length (S1) along the corresponding abutting surfaces (23a, 24a, 23b, 24b) to produce a ramp-up welding seam (31) with increasing welding seam depth; d) peripheral, complete welding along the corresponding abutting surfaces (23a, 24a, 23b, 24b) by means of deep welding to produce a deep welding seam (32) having a substantially constant welding seam depth up to the defined end point (EP); e) reducing the power density (ramping down) of the laser beam (26, 28) for a defined length (S2) to produce a ramp-down welding seam (33) with decreasing welding seam depth; f) welding at least a portion of the defined length (S1, S2) by means of heat conduction welding using a laser designed for a heat conduction welding method such that at least one heat conduction welding seam (34) is produced.


Patent
Mahle GmbH | Date: 2017-03-08

The invention relates to a metal-air battery (1), comprising a housing (2), a hollow cylindrical cathode (7), which is arranged between an air chamber (9) and an electrolyte chamber (10) in the housing (2), a metal anode (11), which is arranged in the electrolyte chamber (10), an air path (14) leading through the housing (2), which air path leads from an air inlet (15) of the housing (2) to an air outlet (16) of the housing (2), an air supply device (20) for producing an air flow, which follows the air path (14) and impinges on the cathode (7), an electrolyte path (17) leading through the housing (2), which electrolyte path leads from an electrolyte inlet (18) of the housing (2), said electrolyte inlet being fluidically connected to the electrolyte chamber (10), to an electrolyte outlet (19) of the housing (2), said electrolyte outlet being fluidically connected to the electrolyte chamber (10), and an electrolyte supply device (21) for producing an electrolyte flow, which follows the electrolyte path (17) and impinges on the anode (11) and the cathode (7).


The present invention relates to a thermoelectric temperature-control unit (5), having a first contact plate (15), having a second contact plate (16), and having at least one plate-shaped thermoelectric transducer (17) which has a first transducer side (20) and a second transducer side (21), facing away therefrom, wherein the respective thermoelectric transducer (17) is arranged between the first contact plate (15) and the second contact plate (16), is coupled in a heat-transmitting fashion by its first transducer side (20) to the first contact plate (15), and is coupled in a heat-transmitting fashion by its second transducer side (21) to the second contact plate (16). Improved efficiency results, in the region of the respective thermoelectric transducer (17), if at least one such contact plate (15, 16) has, on an inner side (23, 24) facing the respective other contact plate (15, 16), a coupling zone (22) which is surrounded along its circumference by a groove (25) formed in the inner side (23, 24), if a heat-conducting material (26) is arranged in the groove (25) and along the coupling zone (22), and if the heat-conducting material (26) is directly in contact with the inner side (23, 24) of the respective contact plate (15, 16), on the one hand, and with the respective transducer side (20, 21), on the other.


Patent
Mahle GmbH | Date: 2017-02-08

The invention relates to an adjustable camshaft (1) having an inner shaft (2) and an outer shaft (3) arranged coaxially thereto, and having a camshaft adjuster (4), the stator (5) of which is connected to the outer shaft (3) and the rotor (6) of which is screwed to the inner shaft (2). The invention is characterized in that an integral first connection contour (7) is provided at the end of the inner shaft (2) and an integral second connection contour (8), which is complementary to the first connection contour, is provided on the rotor (6), these connection contours directly or indirectly making an interlocking connection between the inner shaft (2) and the rotor (6) possible.


Patent
Mahle GmbH | Date: 2017-03-08

The invention relates to a metal-air battery (1), comprising a housing (2), a cathode (7), which is arranged between an air space (9) and an electrolyte space (10) in the housing (2), a metal anode (11), which is arranged in the electrolyte space (10), an air path (14) leading through the housing (2), which air path leads from an air inlet (15) of the housing (2) to an air outlet (16) of the housing (2), an air supply device (20) for producing an air flow, which follows the air path (14) and impinges on the cathode (7), an electrolyte path (17) leading through the housing (2), which electrolyte path leads from an electrolyte inlet (18) of the housing (2), which electrolyte inlet is fluidically connected to the electrolyte space (10), to an electrolyte outlet (19) of the housing (2), which electrolyte outlet is fluidically connected to the electrolyte space (10), and an electrolyte supply device (21) for producing an electrolyte flow, which follows the electrolyte path (17) and impinges on the anode (11) and the cathode (7).


Patent
Mahle GmbH | Date: 2017-03-29

The invention relates to an axial piston machine (1), - comprising cylinders (5) arranged circularly around and coaxial to a shaft (3), and in which cylinders pistons (6) are arranged to be translationally adjustable, - wherein an inlet opening (9) is assigned to each cylinder (5), - comprising a control disk (10) connected rotationally fixed to the shaft (3) and having an eccentrically-arranged through opening (11) which, during each rotation of the control disk (10), passes over each inlet opening (9) once and thereby supplies working medium into the associated cylinder (5). The invention is characterized in that the control disk (10) is mounted adjustably on the shaft (3) in such a way that, at a predefined pressure in the cylinder (5), the control disk lifts reversibly from the inlet opening (9) and by this means enables a build up of pressure in the cylinder (5).


Patent
Mahle GmbH | Date: 2017-04-12

Disclosed is a heat exchanger (3), especially an exhaust gas cooler, comprising a housing (3) with an opening (4) into which a heat exchanger block formed by heat exchanger tubes (5) is inserted, and comprising a base (11) in which ends of the heat exchanger tubes (5) are fluid-tightly accommodated; a flange (1) which surrounds the opening (4) and on which the base (11) comes to rest is formed on the housing (2).


Patent
Mahle GmbH | Date: 2017-01-11

The invention relates to a cooling apparatus for a first heat source and a second heat source, comprising a radiator and at least one first coolant pump, a coolant line interconnection being provided between the first heat source, the second heat source and the radiator, a thermostat arrangement with at least two thermostatic valves being provided in the coolant line interconnection to achieve a graded temperature distribution of the coolant.


Patent
Mahle GmbH | Date: 2017-01-04

The invention relates to a method for producing a support basket (2) for an annular filter element (3), wherein: an inner structure (27) made of at least one wire (17) is placed on a matrix (4) of a welding device (1); an outer structure (28) made of at least one wire (12) is placed on the inner structure (27); the outer structure (28) and the inner structure (27) are welded together at contact points (16), where the outer structure (28) touches the inner structure (27), by means of a welding tool (6) of the welding device (1), and the inner structure (27) is wound onto the matrix (4) and/or the outer structure (28) is wound onto the inner structure (27).


Patent
Mahle GmbH | Date: 2017-04-05

The invention concerns a condenser arrangement (1) for an air conditioning system, with at least one pipe wall (3) made of metal, more particularly aluminium, and with a protective layer (5) that is provided on the pipe wall (3) and contains 40-90 mass % zinc oxide (ZnO).

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