公开(公告)号：WO2012072864A1

公开(公告)日：2012-06-07

申请号：PCT/FI2011/050879

申请日：2011-10-12

Applicant: WÄRTSILÄ FINLAND OY ,  TROBERG, Mikael ,  ZUANIGH, Luca ,  WINTERSTELLER, Anton ,  HATTAR, Christer ,  RIZZETTO, Gino ,  DELNERI, Diego

Inventor： TROBERG, Mikael ,  ZUANIGH, Luca ,  WINTERSTELLER, Anton ,  HATTAR, Christer ,  RIZZETTO, Gino ,  DELNERI, Diego

IPC: F02D41/00 ,  F02D41/30 ,  F02D41/40 ,  F02M45/08 ,  F02D13/02

CPC classification number: F02D41/32 ,  F02D13/02 ,  F02D41/0002 ,  F02D41/3017 ,  F02D41/3094 ,  F02D41/40 ,  F02M45/086 ,  F02M2200/44 ,  Y02T10/142 ,  Y02T10/18 ,  Y02T10/42 ,  Y02T10/44

Abstract: The method for controlling the operation of an internal combustion engine comprises at least two operating modes.In a first operating mode,the intake valve (3) is closed at a first predetermined crank angle, in accordance with the Miller cycle, before the piston (2) reaches bottom dead center during the intake stroke for reducing pressure in the cylinder (1), and fuel is injected using first fuel injection means (9a) optimized for large amounts of fuel. In a second operating mode the intake valve (3) is closed at a second predetermined crank angle, in accordance with conventional intake valve closing timing, after or slightly before the piston (2) has passed bottom dead center, and fuel is injected using second fuel injection means (9b) optimized for small amounts of fuel. The invention also concerns an internal combustion engine.

Abstract translation: 用于控制内燃机的操作的方法包括至少两种操作模式。在第一操作模式中，进气门（3）根据米勒循环以第一预定曲柄角关闭，在活塞 2）在进气冲程期间到达下止点，以减小气缸（1）中的压力，并且使用针对大量燃料优化的第一燃料喷射装置（9a）喷射燃料。 在第二操作模式中，根据常规进气门关闭正时，在活塞（2）已经通过下止点之后或之后，进气阀（3）以第二预定曲柄角关闭，并且使用第二 针对少量燃料优化的燃料喷射装置（9b）。 本发明还涉及内燃机。

公开(公告)号：WO2011098663A1

公开(公告)日：2011-08-18

申请号：PCT/FI2011/050059

申请日：2011-01-26

Applicant: WÄRTSILÄ FINLAND OY ,  CAFFARI, Alberto ,  HATTAR, Christer

Inventor： CAFFARI, Alberto ,  HATTAR, Christer

IPC: F01N3/20 ,  F02D41/00 ,  F02D19/08

CPC classification number: F02D41/0007 ,  F01N3/208 ,  F02D19/061 ,  F02D19/10 ,  F02D41/0025 ,  F02D41/0027 ,  F02D41/3094 ,  F02D2200/0406 ,  F02M43/00 ,  Y02T10/144 ,  Y02T10/24 ,  Y02T10/36

Abstract: The invention enables a SCR unit to run more efficiently. The inventive arrangement comprises an engine control unit (13), a SCR unit(12)and a pilot fuel injectors (10). The engine control unit is connected with the pilot fuel injector for controlling pilot fuel injection. Further, the arrangement comprises a supercharged air sensor(14) that is connected with the engine control unit. The engine control unit comprises an adjustment unit that is arranged to receive supercharged air reference data signals and signals from the charged air sensor(14), and also to form an adjustment signal. The adjustment signal is arranged to adjust the control of the pilot fuel injector.

Abstract translation: 本发明使SCR单元更有效地运行。 本发明的装置包括发动机控制单元（13），SCR单元（12）和引燃燃料喷射器（10）。 发动机控制单元与用于控制先导燃料喷射的先导燃料喷射器连接。 此外，该装置包括与发动机控制单元连接的增压空气传感器（14）。 发动机控制单元包括调节单元，该调整单元被布置成接收来自带电空气传感器（14）的增压空气参考数据信号和信号，并且还形成调整信号。 调节信号被布置成调节引燃燃料喷射器的控制。

公开(公告)号：WO2013093200A1

公开(公告)日：2013-06-27

申请号：PCT/FI2012/051268

申请日：2012-12-19

Applicant: WÄRTSILÄ FINLAND OY

Inventor： HATTAR, Christer ,  NYLUND, Ingemar

IPC: F02B19/10 ,  F02D19/08 ,  F02P19/02 ,  F02D41/30 ,  F02D29/06 ,  F02D41/40 ,  F02D37/02

CPC classification number: F02D41/0025 ,  F02B19/1095 ,  F02D19/06 ,  F02D37/02 ,  F02D41/0027 ,  F02D41/3041 ,  F02D41/3047 ,  F02D41/401 ,  F02D41/402 ,  F02P19/026 ,  Y02T10/36 ,  Y02T10/44

Abstract: The invention relates to a method of operating an internal combustion engine by combusting gaseous fuel comprising the steps of feeding gaseous fuel and combustion air to the combustion chamber of the engine, compressing the mixture of the combustion air and the gaseous fuel in the combustion chamber, feeding the mixture of the combustion air and the gaseous fuel from the combustion chamber to a first and a second pre-chamber arranged in flow communication with the combustion chamber, igniting the mixture of the combustion air and the gaseous fuel in the first pre-chamber at a first moment, and igniting said mixture in the second pre-chamber at a second moment, after the first moment, ignition being accomplished by means of injecting liquid fuel into a pre-chamber and igniting the liquid fuel by compression ignition.

Abstract translation: 本发明涉及一种通过燃烧气态燃料来操作内燃机的方法，包括以下步骤：将气体燃料和燃烧空气供给到发动机的燃烧室，压缩燃烧空气和燃烧室中的气体燃料的混合物， 将燃烧空气和气体燃料的混合物从燃烧室供给到与燃烧室流动连通的第一和第二预燃室，点燃第一预燃室中的燃烧空气和气态燃料的混合物 在第一时刻，并且在第二时刻点燃第二预制室中的所述混合物，在第一时刻之后，通过将液体燃料注入预燃室并通过压缩点火点燃液体燃料来实现点火。

公开(公告)号：WO2009109694A2

公开(公告)日：2009-09-11

申请号：PCT/FI2009/050124

申请日：2009-02-16

Applicant: WÄRTSILÄ FINLAND OY ,  SILLANPÄÄ, Hannu ,  HATTAR, Christer ,  CAFARI, Alberto ,  BIANCHI, Giuseppe ,  ZERNETTI, Gianpaolo ,  TREMULI, Paolo

Inventor： SILLANPÄÄ, Hannu ,  HATTAR, Christer ,  CAFARI, Alberto ,  BIANCHI, Giuseppe ,  ZERNETTI, Gianpaolo ,  TREMULI, Paolo

IPC: F02B19/00

CPC classification number: F02B19/08 ,  F02B19/10 ,  F02B19/1014 ,  F02B19/1023 ,  Y02T10/125

Abstract: The invention relates to a pre-chamber arrangement for a cylinder (1) of an internal combustion engine fitted for premixed combustion (Otto cycle), the pre- chamber arrangement including a first chamber (7) for mixing and igniting of the fuel and a second chamber (8) of substantially smaller volume for communication between the first chamber (7) and the main combustion chamber (4) of the cylinder (1), the first chamber (7) being provided with pilot injection means (9) and having a chamber top substantially opposite to the second chamber (8). The first chamber (7) has substantially oval shape with curved walls between the chamber top and the second chamber (8). The second chamber (8) is asymmetrically positioned with regard to the first chamber (7) so as to provide a tumble flow motion (A) in the first chamber (7) for the gaseous fuel pressed from the main combustion chamber (4) and guided by curved wall of the first chamber (7) towards and past the fuel of pilot injection means (9) to be ignited.

Abstract translation: 本发明涉及一种用于预混合燃烧（Otto循环）的内燃机的气缸（1）的预腔室装置，该预制室装置包括用于混合和点燃燃料的第一室（7）和 第二室（8）具有基本上较小的体积，用于在第一室（7）和气缸（1）的主燃烧室（4）之间连通，第一室（7）设有先导喷射装置（9） 基本上与第二室（8）相对的室顶部。 第一腔室（7）具有大致椭圆形的形状，在腔室顶部和第二腔室（8）之间具有弯曲的壁。 第二室（8）相对于第一室（7）不对称地定位，以便在第一室（7）中为从主燃烧室（4）压缩的气体燃料提供滚筒流动（A），以及 由第一腔室（7）的弯曲壁引导并朝向要点燃的引燃喷射装置（9）的燃料喷射。