| MAHLE INTERNATIONAL GMBH Patent applications |
| Patent application number | Title | Published |
|---|
| 20120131795 | METHOD FOR THE PRODUCTION OF A MULTI-PART PISTON FOR AN INTERNAL COMBUSTION ENGINE - A multi-part piston for an internal combustion engine has an upper piston part having a piston crown, and a lower piston part. The lower piston part has pin boss supports and pin bosses connected with them and the upper piston part and the lower piston part each have an inner and an outer support element, which elements delimit an outer circumferential cooling channel. The inner support elements delimit a cavity that is open toward the pin bosses. The cavity has a separate cooling oil collector that has at least one cooling oil opening. The piston is produced by manufacturing the upper piston part and lower piston part, inserting the cooling oil collector into the upper piston part or lower piston part, and joining the upper and lower piston parts together by friction welding. | 05-31-2012 |
| 20120128284 | SLIDE BEARING, A MANUFACTURING PROCESS AND AN INTERNAL COMBUSTION ENGINE - It is described a slide bearing, particularly to constrain at least one shaft of an internal combustion engine, having a support structure or substrate ( | 05-24-2012 |
| 20120126488 | PISTON RING - There is described a piston ring, particularly devised for use in internal combustion engines or compressors, comprising at least a metallic base ( | 05-24-2012 |
| 20120080005 | MULTI-PART PISTON FOR AN INTERNAL COMBUSTION ENGINE - A multi-part piston for an internal combustion engine has an upper piston part with a piston crown, and a lower piston part, each of the piston parts having an inner and an outer support element that delimit an outer circumferential cooling channel and an inner cooling chamber. The cooling chamber bottom has an opening. A holding element is disposed in the inner cooling chamber and extends from the underside of the piston crown vertically toward the opening. The holding element carries a closure element that closes the opening and has at least one cooling oil opening. | 04-05-2012 |
| 20120037115 | METHOD FOR THE PRODUCTION OF A PISTON FOR AN INTERNAL COMBUSTION ENGINE AND PISTON FOR AN INTERNAL COMBUSTION ENGINE - A method for the production of a piston for an internal combustion engine has the following steps: producing an upper piston part having at least one joining surface, b) producing a lower piston part having at least one joining surface, c) producing a direct contact between the at least one joining surface of the upper piston part and the at least one joining surface of the lower piston part, d) heating the upper piston part and the lower piston part by induction or by a direct flow of current over the joining surfaces in the region of the joining surfaces that have been brought into direct contact, e) connecting the upper and lower piston parts with one another to produce a piston by a pressing process, and machining the piston to finish it. | 02-16-2012 |
| 20120037114 | PISTON FOR AN INTERNAL COMBUSTION ENGINE - A piston for an internal combustion engine has an upper part and a lower part. The upper part has a collar with a ring rib and the lower part has a wall and a contact part radially within the wall. When the upper part is connected with the lower part by friction welding, the face surfaces of the ring rib, the collar, the wall, and the contact part form friction-welding surfaces and form a cooling channel and a cooling cavity between them. To supply the cooling channel and the cooling cavity with cooling oil, radial bores are introduced into the ring rib, which bores connect the cooling channel with the cooling cavity. In this way, it is guaranteed that a sufficient residual amount of oil collects in the cooling channel and in the cooling cavity, which amount is constantly renewed, and leads to good cooling of the piston crown. | 02-16-2012 |
| 20120037113 | Piston for an internal combustion engine and method for its production - A method for the production of a piston has the following method steps: (a) providing a blank of a piston base body, having an outer joining surface, an inner joining surface and a circumferential lower cooling channel part that runs between the two joining surfaces, (b) providing a blank of a piston ring element, having an outer joining surface, an inner joining surface and a circumferential upper cooling channel part that runs between the two joining surfaces, (c) forming a circumferential widened region on at least one joining surface, the widened region extending toward the related cooling channel part, (d) connecting the blank of the piston base body with the blank of the piston ring element by way of their joining surfaces, by friction welding, to produce a piston blank, and (e) machining the piston blank further and/or finish-machining it to produce a piston. | 02-16-2012 |
| 20120037111 | Piston for an internal combustion engine and method for its production - A method for producing a piston for an internal combustion engine, composed of first and second piston components, has the following steps: (a) providing a blank of the first piston component composed of a tempered or precipitation-hardened steel, having at least one joining surface, (b) providing a blank of the second piston component composed of a tempered or precipitation-hardened steel, having at least one joining surface, (c) tempering or precipitation-hardening the blanks, (d) friction-welding the joining surfaces of the blanks to produce a piston blank, with the formation of at least one friction-welding seam and a heat influence zone in the region of the at least one friction-welding seam, (e) annealing or low-stress annealing of the piston blank, thereby obtaining the heat influence zone(s), (f) re-machining and/or finishing the piston blank to produce a piston. A piston so produced is also provided. | 02-16-2012 |
| 20120024255 | PISTON FOR AN INTERNAL COMBUSTION ENGINE - A piston for an internal combustion engine has a lower piston part and an upper piston part disposed on the lower piston part. The upper piston part has a top land that runs around its circumference, and a ring belt that runs around its circumference. At least the upper piston part consists of a sintered material. | 02-02-2012 |
| 20120000439 | Piston for an internal combustion engine - A piston for an internal combustion engine has an upper and a lower piston part. The upper piston part has a cooling cavity on its underside, and the lower piston part has a ceiling element with a cover hood, which closes off the cooling cavity. The cover hood is securely attached on the ceiling element if the central part of the cover element has an oil drain opening, the top of which is formed as a neck, the upper edge of which neck has a circumferential bead having an underside configured as a circumferential undercut, and if the cover hood has a centrally located opening, the edge of which has slits that are distributed over the circumference and lie radially. The cover hood is attached on the neck so that the sheet-metal tabs are snapped in below the undercut, between the slits, and form a secure snap-in connection with the neck. | 01-05-2012 |
| 20110317955 | BEARINGS - A plastics polymer-based bearing material and a method manufacture thereof are described, the material comprising a matrix of a polyimide/amide plastics polymer material and having distributed throughout the matrix: from 5 to less than 15 vol % of a metal powder; from 1 to 15 vol % of a fluoropolymer, the balance being the polyimide/amide resin apart from incidental impurities. | 12-29-2011 |
| 20110303183 | HYDRODYNAMIC BEARING FOR AN INTERNAL COMBUSTION ENEGINE - A hydrodynamic bearing ( | 12-15-2011 |
| 20110286875 | BEARING MATERIAL - A bearing material and a method for the manufacture of a bearing having a lining of the bearing material is described, the bearing material comprising: in wt %: 4-12 tin; 0.1-2 nickel; 1-6 bismuth; 0.01-less than 0.10 alumina; balance copper apart from incidental impurities. | 11-24-2011 |
| 20110265754 | VALVE UNIT FOR AN INTERNAL COMBUSTION ENGINE AND INTERNAL COMBUSTION ENGINE - The invention relates to a valve unit for at least one of influencing and controlling a gas flow in an internal combustion engine comprising at least one valve member for modifying a cross-section of a gas flow-carrying channel through which a fluid flows and a drive train for rotatingly driving the at least one valve member. The drive train comprises an input shaft, which is drivingly coupled to a drive device in the mounted state, and at least one valve member shaft which is non-rotationally connected to the valve member. It is especially advantageous if the drive train comprises at least one phase adjuster for drivingly coupling the input shaft and the valve member shaft, a rotational position of the shafts in relation to each other being adjustable by the phase adjuster. | 11-03-2011 |
| 20110226211 | Two-part piston for an internal combustion engine - A two-piece piston for an internal combustion engine has an upper piece and a lower piece, the lower piece having an upper base part with an opening lying coaxial to the piston axis into which a pin on the upper piece is inserted. The upper piece is connected to the lower piece with a hexagonal nut screwed onto the pin. A resilient sleeve is arranged between the upper piece and the lower piece comprising an inwardly directed collar on the against which the upper face of the hexagonal nut lies and in the region facing away from the piston crown, a contact surface facing the piston crown lying on a surface on the inner side of the opening. An economically produced two-piece piston results with a resilient sleeve between both screwed piston pieces which exerts a pre-tensioning and thus provides security for the screw connection. | 09-22-2011 |
| 20110192023 | Method for the production of a piston for an internal combustion engine - A method for the production of a piston for an internal combustion engine is proposed, in which a piston blank ( | 08-11-2011 |
| 20110174245 | COOLING DUCT FOR A PISTON OF A COMBUSTION ENGINE - Disclosed is a cooling duct ( | 07-21-2011 |
| 20110174153 | PISTON FOR AN INTERNAL COMBUSTION ENGINE - The invention proposes a piston ( | 07-21-2011 |
| 20110168109 | Modular unit composed of a cylinder sleeve and crankcase - A modular unit is composed of a cylinder sleeve and a crankcase for an internal combustion engine. The cylinder sleeve and the crankcase each have a face surface and a cooling water space that at least partly surrounds the cylinder sleeve and is open toward the face surfaces is configured between the cylinder sleeve and the crankcase. A holder ring is provided, which completely covers the cooling water space and at least partially covers the face surface of the cylinder sleeve. | 07-14-2011 |
| 20110155092 | Piston/piston ring arrangement - A piston/piston ring arrangement for an internal combustion engine has a piston that is provided with at least one piston ring accommodated in a ring groove, which ring has a ring gap. A spring element is disposed between the groove root of the ring groove and the piston ring, which element fills the ring gap of the piston ring. A modular unit is composed of such a piston/piston ring arrangement and a cylinder or a cylinder sleeve of an internal combustion engine. | 06-30-2011 |
| 20110155091 | INLAY PART FOR A PISTON OF AN INTERNAL COMBUSTION ENGINE AND PISTON OR PISTON HEAD PROVIDED WITH THE INLAY PART - The present invention relates to an inlay part ( | 06-30-2011 |
| 20110154983 | Cylinder sleeve - The present invention relates to a cylinder sleeve ( | 06-30-2011 |
| 20100300396 | PIN BOSS AND PISTON PROVIDED WITH IT, FOR AN INTERNAL COMBUSTION ENGINE - The invention relates to a pin boss ( | 12-02-2010 |
| 20100266434 | FLOW-CONTROLLABLE CELL PUMP WITH PIVOTABLE CONTROL SLIDE VALVE - A flow-controllable cell pump having a bearing element that may be positioned in a receiving shell of a pump housing such that the receiving shell may assume an operational connection with at least one of a bearing element, a pump chamber positioned between an inner rotor and a control slide valve. An outer rotor may be configured in the control slide valve, and suction kidneys may be arranged on both sides of the pump chambers in the pump housing. At least one pressure kidney may be offset on both sides of the pump chambers in the pump housing. The pressure kidney may be connected with a pressure connection socket, with a control slide valve arm configured on the control slide valve. | 10-21-2010 |
| 20100236515 | Method for the production of a single part piston and a piston produced by such a method - The present invention relates to a method for producing a single part piston ( | 09-23-2010 |
| 20100163203 | CASTING CORE FOR FORMING A COOLING CHANNEL IN A PISTON PRODUCED BY CASTING - The invention relates to a soluble and essentially annular casting core ( | 07-01-2010 |
| 20080257290 | Camshaft with Cams that Can be Rotated in Relation to Each Other, Especially for Motor Vehicles - The aim of the invention is to provide a reliable and inexpensive camshaft wherein the inner shaft and the outer shaft can be adjusted in a low-friction manner. For this purpose, a camshaft with cams that can be rotated in relation to each other, wherein at least one first cam ( | 10-23-2008 |
| 20080223211 | Piston for an Internal Combustion Engine and Method for Coating Its Pin Bores - Disclosed is a piston ( | 09-18-2008 |
