Patents Assigned to Renault SA
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Patent number: 7111607Abstract: An air intake device of an internal combustion engine comprises a cylinder head having therein two intake ports that are adapted to connect to a cylinder of a cylinder block; and a single partition plate that extends across both the two intake ports so that each of the two intake ports is divided into first and second air passages.Type: GrantFiled: January 27, 2003Date of Patent: September 26, 2006Assignees: Nissan Motor Co., Ltd., Renault SAInventor: Hajime Oota
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Patent number: 7004868Abstract: The drivetrain includes a differential mechanism having four or more input/output elements and having two degrees of freedom. The input In from an engine, the output Out to a drive shaft, and two motor-generators MGi and MGo are assigned to the elements, and one of the elements other than the element to which the output assigned is provided with brakes B. By braking the element other than the output with the brakes, a large reduction ratio can be achieved, so startability can be improved without enlarging the capacities of the motor-generators.Type: GrantFiled: July 23, 2002Date of Patent: February 28, 2006Assignees: Nissan Motor Co., Ltd., Renault SAInventors: Toshikazu Oshidari, Masaki Nakano, Keyvan Kargar, Joel Poupon
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Patent number: 6852053Abstract: A four-element, two-freedom-degree planetary gear mechanism is constructed by arraying four input/output elements of a sun gear S1, a ring gear R, a carrier C and a sun gear S2 in a alignment chart. One of the two elements R and C arrayed on the inner side is assigned to the input In from an engine whereas the other is assigned to the output Out to the drive shaft, and the two outer elements S1 and S2 are connected to motor-generators MGi and MGo, respectively. As a result, the torque for the motor-generators to bear can be made lower than the engine output, and the energy to pass through the motor-generators is made lower to improve the transmission efficiency of the drivetrain.Type: GrantFiled: July 23, 2002Date of Patent: February 8, 2005Assignees: Nissan Motor Co., Ltd., Renault SAInventors: Masaki Nakano, Toshikazu Oshidari, Keyvan Kargar, Joel Poupon
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Patent number: 6708661Abstract: During the starting, a) the temperature (T) of the engine and the pressure (P) of the fuel delivered by said pressurizing means are monitored, b) if T is below a predetermined threshold temperature (Ts), an engine starting mode is established in which the engine is started with fuel at high pressure as soon as the pressure (P) becomes higher than a predetermined threshold pressure (Ps1), and c) an engine starting mode is established where the engine is started using fuel at low pressure if T>Ts.Type: GrantFiled: September 17, 2002Date of Patent: March 23, 2004Assignees: Siemens VDO Automotive SAS, Renault SAInventors: Alain Aubourg, Bertrand Hauet, Francis Tarroux
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Patent number: 6649297Abstract: The invention relates to a bipolar plate for a fuel cell comprising on at least one of its faces at least one flute able to form with the surface of an adjacent electrode at least one gas distribution channel, wherein said distribution channel has a shape or geometry such that the liquid of the biphasic flow flowing in said channel may be moved away from said electrode surface. The invention also relates to a method for preparing such a bipolar plate and to a fuel cell comprising at least one of such bipolar plates.Type: GrantFiled: June 28, 2001Date of Patent: November 18, 2003Assignees: Commissariat a l'Energie Atomique, Automobiles Peugeot, Automobiles Citrogen, Renault SAInventors: Marielle Marchand, Olivier Lebaigue, Michel Amblard, Bruno Bador, Fabien Heurtaux, Jean-Pierre Lisse
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Publication number: 20030131594Abstract: An exhaust arrangement for a multi-cylinder internal combustion engine of a vehicle which has a row of cylinders. The arrangement includes an exhaust manifold including a branch portion having a plurality of branch pipes corresponding to the cylinders, a catalyst disposed downstream of the exhaust manifold, and an exhaust pipe connecting the exhaust manifold to the catalyst. The exhaust pipe defines an exhaust path having a bend. The bend includes a plane dividing an interior of the bend into equal halves. A partition divides the exhaust path into first and second exhaust passages coextending in a longitudinal direction of the exhaust pipe. The partition extends in the bend in alignment with the plane. An oxygen sensor is disposed at the bend of the exhaust pipe in alignment with the partition and projects into both of the first and second exhaust passages through a periphery of the partition.Type: ApplicationFiled: December 12, 2002Publication date: July 17, 2003Applicant: NISSAN MOTOR CO., LTD. RENAULT SAInventor: Kiyomi Kawamizu
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Publication number: 20030073534Abstract: A drivetrain for transmitting driving force from an engine to a drive shaft of a vehicle, includes a planetary gear mechanism including first to five rotational elements arrayed on an alignment chart, the first rotational element being connected to an output shaft of the engine and the second rotational element being connected to the drive shaft, a first motor-generator connected to the third rotational element, and a second motor-generator connected to the fourth rotational element.Type: ApplicationFiled: July 23, 2002Publication date: April 17, 2003Applicant: NISSAN MOTOR CO., LTD. & RENAULT SAInventors: Toshikazu Oshidari, Masaki Nakano, Keyvan Kargar, Joel Poupon
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Publication number: 20030069104Abstract: A four-element, two-freedom-degree planetary gear mechanism is constructed by arraying four input/output elements of a sun gear S1, a ring gear R, a carrier C and a sun gear S2 in a alignment chart. One of the two elements R and C arrayed on the inner side is assigned to the input In from an engine whereas the other is assigned to the output Out to the drive shaft, and the two outer elements S1 and S2 are connected to motor-generators MGi and MGo, respectively. As a result, the torque for the motor-generators to bear can be made lower than the engine output, and the energy to pass through the motor-generators is made lower to improve the transmission efficiency of the drivetrain.Type: ApplicationFiled: July 23, 2002Publication date: April 10, 2003Applicant: NISSAN MOTOR CO., LTD. & RENAULT SAInventors: Masaki Nakano, Toshikazu Oshidari, Keyvan Kargar, Joel Poupon
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Publication number: 20030064847Abstract: The drivetrain includes a differential mechanism having four or more input/output elements and having two degrees of freedom. The input In from an engine, the output Out to a drive shaft, and two motor-generators MGi and MGo are assigned to the elements, and one of the elements other than the element to which the output assigned is provided with brakes B. By braking the element other than the output with the brakes, a large reduction ratio can be achieved, so startability can be improved without enlarging the capacities of the motor-generators.Type: ApplicationFiled: July 23, 2002Publication date: April 3, 2003Applicant: NISSAN MOTOR CO., LTD. & RENAULT SAInventors: Toshikazu Oshidari, Masaki Nakano, Keyvan Kargar, Joel Poupon
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Patent number: 6517146Abstract: Motor vehicle functional front end comprising at least one upper crossmember (2) and, at each end of the upper crossmember, a support piece (3) capable of supporting at least one lighting unit of the vehicle, characterized in that the connection between the upper crossmember and each support piece is provided by one nesting into the other, combined with a possibility of adjustment in a roughly horizontal direction perpendicular to the axis of the vehicle.Type: GrantFiled: November 14, 2000Date of Patent: February 11, 2003Assignees: Compagnie Plastic Omnium, Renault SAInventors: Hugues Cheron, Laurent Decker, Bruno Ghiringhelli, Alain Liadouze, Marc Durbize
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Patent number: 6375252Abstract: Motor vehicle functional front end particularly comprising an upper crossmember (1). The said crossmember comprises, near to one of the ends of the said crossmember, a point of reference allowing it to be positioned on the vehicle, longitudinally and laterally, with respect to a reference point provided on a front wing of the vehicle.Type: GrantFiled: November 14, 2000Date of Patent: April 23, 2002Assignees: Compagnie Plastic Omnium, Renault SAInventors: Hugues Cheron, Laurent Decker, Bruno Ghiringhelli, Alain Liadouze, Marc Durbize
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Patent number: 5168622Abstract: Device that makes possible the holding and/or automatic assembly of parts includes tool-carrying arms (40), fluid power circuits that actuate these tools, and control circuits for these power circuits. A support unit (10) has arms (40) mechanically fastened thereto. A fluid distributor (30) is mounted on the support unit, a part of the power and control circuits of the arms being incorporated into the support unit, the other part being extended in the arms.Type: GrantFiled: May 6, 1991Date of Patent: December 8, 1992Assignee: Regie Nationale des Usines Renault SAInventor: Jean-Daniel Peyroux