公开(公告)号：EP2454464A1

公开(公告)日：2012-05-23

申请号：EP10742706.4

申请日：2010-06-29

Applicant: MAHLE International GmbH

Inventor： SCHULZ, Joachim ,  KORTAS, Jochen

IPC: F02F3/00 ,  B23K1/00

CPC classification number: F02F3/003 ,  F02B23/0672 ,  F02B23/0693 ,  Y02T10/125 ,  Y10T29/49252 ,  Y10T29/49256 ,  Y10T29/49263

Abstract: The present invention relates to a method for producing a multi-part piston (10, 110) for an internal combustion engine, comprising the following method steps: producing an upper piston part (11) and a lower piston part (12), each having an inner support element (22, 26; 122, 126) having joining surfaces (24, 28; 124, 128) and an outer support element (23, 27; 123, 127) having joining surfaces (25, 29; 125, 129), applying a high-temperature solder material in the area of at least one joining surface (24, 28 or 25, 29; 124, 128 or 125, 129), assembling the upper piston part (11) and the lower piston part (12) to form a piston body by establishing a contact between the joining surfaces (24, 28 or 25, 29; 124, 128 or 125, 129), placing the piston body in a vacuum furnace and evacuating the vacuum furnace; heating the piston body at a pressure of at most 10
-2 mbar to a soldering temperature of at most 1300°C; cooling the soldered piston (10, 110) at a pressure of at most 10
-2 mbar until the high-temperature solder material is completely solidified. The present invention further relates to a piston (10, 110) that can be produced by means of said method.

公开(公告)号：EP2430300A2

公开(公告)日：2012-03-21

申请号：EP10775585.2

申请日：2010-05-14

Applicant: Advanced Diesel Concepts, LLC.

Inventor： BAXTER, John, M.

IPC: F02D41/40 ,  F02D41/34 ,  F02B3/12 ,  F02B3/08 ,  F02M45/08 ,  F02M51/06

CPC classification number: F02B23/0669 ,  F02B3/06 ,  F02B23/0621 ,  F02B23/0636 ,  F02B23/0693 ,  F02B23/0696 ,  F02D41/182 ,  F02D41/3836 ,  F02D2250/31 ,  F02M26/04 ,  F02M45/12 ,  F02M61/1806 ,  F02M61/1893 ,  F02M61/205 ,  F02M63/0225 ,  Y02T10/125

Abstract: An engine having improved combustion characteristics is provided. The engine includes a fuel injection system that is variable between two operational states. In the first operating state, the fuel injectors provide a fuel spray having first spray pattern characteristics. When the system detects that an operation characteristic exceeds a threshold, the fuel injectors are displaced into a second operating state. In the second operating state, the fuel injectors provide a spray pattern having first spray pattern characteristics. The combustion cycle may be characterized by timing the fuel injection so that the fuel is sprayed into the cylinder early in the compression stroke. Further still, the combustion cycle may be characterized by controlling the fuel pressure so that the fuel pressure is inversely related to the load on the engine.

Abstract translation: 提供了具有改进的燃烧特性的发动机。 发动机包括在两个操作状态之间变化的燃料喷射系统。 在第一操作状态下，燃料喷射器提供具有第一喷射模式特性的燃料喷雾。 当系统检测到操作特性超过阈值时，燃料喷射器移动到第二操作状态。 在第二操作状态下，燃料喷射器提供具有第一喷射模式特征的喷射模式。 燃烧循环的特征在于定时燃料喷射，使得燃料在压缩行程中提前喷入气缸。 此外，燃烧循环的特征在于控制燃料压力使得燃料压力与发动机上的负载成反比。

公开(公告)号：EP2401489A1

公开(公告)日：2012-01-04

申请号：EP10705879.4

申请日：2010-02-26

Applicant: 2G Energietechnik GmbH

Inventor： HERDIN, Ruediger

IPC: F02B23/06 ,  F16J1/09

CPC classification number: F02B23/0687 ,  F02B23/0669 ,  F02B23/069 ,  F02B23/0693 ,  F02B23/0696 ,  Y02T10/125

Abstract: The invention relates to a piston (100) for an internal combustion engine. The piston has a surface on the combustion side (110) wherein a depression (130) having a depression edge (140) and a depression floor (132) is arranged in the surface and the depression has a maximum depth of t
max in the axial direction of the piston, measured from the combustion side surface. The combustion side surface furthermore has at least one protrusion (150) that is arranged on a section of the depression edge (142) and has a depth t
aus , wherein the depth t
aus of the protrusion is smaller than the depth of the depression t
max in the axial direction of the piston.

公开(公告)号：EP2013458A1

公开(公告)日：2009-01-14

申请号：EP07724718.7

申请日：2007-04-28

Applicant: DaimlerChrysler AG

Inventor： ZÖLLER, Herbert

IPC: F02B23/06

CPC classification number: F02B23/0693 ,  F02B3/06 ,  F02B23/0651 ,  F02B23/0669 ,  F02B23/0696 ,  F02B2275/14 ,  F02M61/1806 ,  Y02T10/123 ,  Y02T10/125

Abstract: The invention relates to a method for operating a direct-injection, self-striking internal combustion engine, and a correspondingly configured internal combustion engine. Into a piston head (5) of the piston (2), a piston recess (6) is formed, which passes into an essentially ring-shaped staging chamber (7) in the transition region of the piston head (5). Injection jets (9, 9') of an injection unit (8) are fed to the staging chamber (7) and there diverted in such a way that a first partial quantity (11) of fuel is diverted into the piston recess (6) in an axial direction (14) and a radial direction (15), that a second partial quantity (12) of fuel in the axial direction (14) and the radial direction (15) is diverted into the combustion chamber (4) via the piston head (5), and that a third partial quantity (13) of fuel is diverted into a circumferential direction (16), wherein each of the three partial quantities (13, 13') of adjacent injection jets (9, 9') meet together in the circumferential direction (16) and are subsequently diverted inwards in the radial direction (15).

公开(公告)号：EP1605158A2

公开(公告)日：2005-12-14

申请号：EP05300470.1

申请日：2005-06-09

Applicant: Renault s.a.s.

Inventor： Anrigo, Philippe

IPC: F02M61/18 ,  F02M61/16 ,  F02M45/08 ,  F02B23/06

CPC classification number: F02B23/0693 ,  F02B3/06 ,  F02B23/0639 ,  F02B23/0669 ,  F02B2275/14 ,  F02M45/086 ,  F02M61/161 ,  F02M61/182 ,  Y02T10/123 ,  Y02T10/125

Abstract: L'invention propose un piston (26) pour un moteur à combustion interne (10) à allumage par compression et à injection directe, comportant dans sa face supérieure (24), un bol (56) délimitant la partie inférieure d'une chambre de combustion (20), caractérisé en ce que le bol (56) comporte une première zone centrale de combustion (60) et au moins une deuxième zone périphérique de combustion (62), qui entoure la première zone centrale (60), et en ce que des moyens d'injection (44, 58) sont susceptibles, en fonction de paramètres de fonctionnement déterminés du moteur, d'injecter du carburant sélectivement vers la première zone centrale (60) et/ou au moins vers la deuxième zone (62) du bol.

Abstract translation: 活塞具有包括中心燃烧区（60）和围绕中心燃烧区的外围燃烧区（62）的郁金香（56）。 注射单元（44）包括用于基于内燃机的操作参数向（60,62）区域选择性地喷射燃料的喷射器（58）。 这些区域形成相对于活塞的上侧平均深度的相应空腔。 还包括用于包括活塞的内燃机的独立权利要求。

公开(公告)号：EP0956440B1

公开(公告)日：2002-11-13

申请号：EP97941103.0

申请日：1997-09-19

Applicant: Perkins Engines Company Limited

Inventor： PARSI, Mohammad

IPC: F02F3/26 ,  F02B23/06

CPC classification number: F02B23/0693 ,  F02B3/06 ,  F02B23/06 ,  F02B23/0621 ,  F02B23/0636 ,  F02B23/0672 ,  F02B2275/14 ,  F02F3/26 ,  Y02T10/125

Abstract: A piston (10) for an internal combustion engine has a re-entrant type combustion bowl (13). The combustion bowl (13) comprises two re-entrant volumes (16, 17) in fluid communication and cascaded with respect to the longitudinal axias of the piston. The cascaded re-entrant volumes (16, 17) enhance gas velocities within the combustion bowl to improve fuel combustion.

公开(公告)号：EP0172253A4

公开(公告)日：1986-11-04

申请号：EP85901055

申请日：1985-02-14

Applicant: MITSUBISHI MOTORS CORP

Inventor： MORIYASU T MITSUBISHI JIDOSHA ,  ISOMOTO JUN MITSUBISHI JIDOSHA ,  NAKAGAMI T MITSUBISHI JIDOSHA ,  TAKAHASHI H MITSUBISHI JIDOSHA ,  MAEDA TAKUO MITSUBISHI JIDOSHA

IPC: F02B3/06 ,  F02B23/06 ,  F02F3/26

CPC classification number: F02B23/0636 ,  F02B3/06 ,  F02B23/06 ,  F02B23/0621 ,  F02B23/0624 ,  F02B23/0651 ,  F02B23/0669 ,  F02B23/0693 ,  F02B23/0696 ,  F02B2275/14 ,  F02B2275/40 ,  F02F3/26 ,  Y02T10/123 ,  Y02T10/125