公开(公告)号：WO2023033694A1

公开(公告)日：2023-03-09

申请号：PCT/SE2022/050758

申请日：2022-08-19

Applicant: SCANIA CV AB

Inventor： DAHL, Andreas ,  SARBY, Håkan

IPC: F02D31/00 ,  F02D41/22 ,  F01L13/06 ,  F02D13/02 ,  F02D13/04

Abstract: A method (100) of controlling a powertrain (2) of a vehicle (40) is disclosed. The powertrain (2) comprises a combustion engine (1) comprising a crankshaft (16), a cylinder (10), and a piston (12). The distance (d) between a piston top (12') of the piston (12) and a cylinder head (10') of the cylinder (10) is smaller than 0.5% of a stroke length (L) of the piston (12). The method (100) comprises the steps of monitoring (110) a rotational speed of a crankshaft (16) of the combustion engine (1), and if the rotational speed of the crankshaft (16) exceeds a threshold speed, increasing (120) the cylinder pressure at a gas exchanging phase of the cylinder (10), and restricting (130) the rotational speed of the crankshaft (16). The present disclosure further relates to a computer program, a computer-readable medium (200), a control arrangement (21), a powertrain (2), and a vehicle (40).

公开(公告)号：WO2022250597A1

公开(公告)日：2022-12-01

申请号：PCT/SE2022/050499

申请日：2022-05-23

Applicant: SCANIA CV AB

Inventor： GÖRANSSON, Hans ,  ANDERSSON, Henrik ,  JOHANSSON, Pontus ,  RODEBÄCK, Joakim ,  DAHL, Andreas ,  HÖCKERDAL, Erik ,  ANDERBERG, Bengt

IPC: F02D13/04 ,  F01L1/34 ,  F01L13/06

Abstract: A method (100) of controlling inlet valves (18) and exhaust valves (24) of a cylinder (10) of an internal combustion engine (1) to obtain an engine braking effect is disclosed. The method (100) comprises the steps of preventing (110) at least one exhaust valve (24) of the cylinder (10) from closing completely during a plurality of successive intake, compression, expansion, and exhaust strokes (41 - 44) of the cylinder (10), phase shifting (120) control of at least one exhaust valve (24) and regulating (130) the amount of air being pumped through the cylinder (10) by phase shifting control of at least one inlet valve (18) of the cylinder (10). The present disclosure further relates to a computer program, a computer-readable medium (200), a control arrangement (21), an internal combustion engine (1), and a vehicle (40) comprising an internal combustion engine (1).

公开(公告)号：WO2021144147A1

公开(公告)日：2021-07-22

申请号：PCT/EP2021/025008

申请日：2021-01-14

Applicant: EATON INTELLIGENT POWER LIMITED

Inventor： SHEREN, James, R. ,  RADULESCU, Andrei

IPC: F01L1/14 ,  F01L1/18 ,  F01L1/20 ,  F01L1/26 ,  F01L13/06 ,  F02D13/04 ,  F01L1/181 ,  F01L13/065 ,  F01L2001/186 ,  F01L2013/105 ,  F01L2303/01 ,  F01L2305/00 ,  F01L2800/06

Abstract: An engine brake rocker arm assembly for a valvetrain and operable in an engine drive mode and an engine braking mode. The assembly is configured to selectively open one of first and second exhaust valves in the engine braking mode and includes a brake rocker arm configured to rotate about a rocker shaft, and an engine brake capsule assembly movable between (i) a locked position configured to perform an engine braking operation, and (ii) an unlocked position that does not perform the engine braking operation. A lash setting tool is configured to removably engage the engine brake capsule assembly and move the engine brake capsule to the locked position to enable mechanical lash adjustment while the brake rocker arm is assembled in a valvetrain and the engine brake capsule is assembled in the brake rocker arm.

公开(公告)号：WO2020114734A1

公开(公告)日：2020-06-11

申请号：PCT/EP2019/081088

申请日：2019-11-13

Applicant: BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT

Inventor： FRIEDRICH, Michael ,  LIEBERT, Sebastian ,  ETZEL, Michael

IPC: B60K6/48 ,  B60W10/06 ,  B60W10/08 ,  B60W20/10 ,  F02D13/04

Abstract: Die Erfindung betrifft eine Steuereinheit und ein Verfahren für einen Hybridantrieb, der einen Verbrennungsmotor und eine elektrische Maschine umfasst, wobei der Verbrennungsmotor Verstellvorrichtungen (beispielsweise vollvariable Ventilhubsteuerungen und/oder ein-/ausschaltbare Ventilöffnungsaktuatoren) zumindest zur Deaktivierung der Ein- und Auslassventil-Öffnungsaktuierung aufweist, Die Steuereinheit ist erfindungsgemäß derart ausgestaltet (z.B. durch ein Software-Programm-Modul in Form eines Schleppmomentreduzierungs-Funktionsmoduls), dass bei mindestens einer vorgegebenen Bedingung (insbesondere beim Rekuperieren im unbefeuerten Schubbetrieb oder beim elektrischen Fahren insbesondere bei einem Betrieb mit hoher Zuschalthäufigkeit des Verbrennungsmotors, z. B. im "Charge Sustaining"- oder HEV-Betrieb) die Ein- und Auslassventile bei unbefeuertem Verbrennungsmotor zumindest nahezu gleichzeitig und zumindest nahezu (vorzugsweise vollständig) geschlossen gehalten werden. Dabei muss der Verbrennungsmotor mit der elektrischen Maschine verbunden sein. Bei gegebenenfalls vorhandener Trennkupplung wird oder bleibt diese geschlossen.

公开(公告)号：WO2019151928A1

公开(公告)日：2019-08-08

申请号：PCT/SE2019/050064

申请日：2019-01-29

Applicant: SCANIA CV AB

Inventor： KARLKVIST, Hans ,  SOMMANSSON, Joakim

IPC: F01L13/06 ,  F01L1/24 ,  F01L9/02 ,  F02D13/04 ,  G01M15/09

Abstract: A compression release brake arrangement (1) for an engine (3) is disclosed. The arrangement (1) comprises a valve actuator assembly (5) configured to, when activated, perform compression release braking of at least a first cylinder (7') of the engine (3), and a hydraulic arrangement (8) comprising a conduit arrangement (9), and a first and a second 5 actuator valve (11, 12) arranged in the conduit arrangement (9). The hydraulic arrangement (8) is arranged such that the valve actuator assembly is activated (5) when the first and second actuator valves (11, 12) are in an open state, and deactivated when at least one of the first and the second actuator valves (11, 12) is in a closed state. The present disclosure further relates to an engine (3), a vehicle (25), a method (100), a computer program, a computer-readable medium (200), and a control arrangement (5).

公开(公告)号：WO2019036272A1

公开(公告)日：2019-02-21

申请号：PCT/US2018/045956

申请日：2018-08-09

Applicant: EATON INTELLIGENT POWER LIMITED

Inventor： VANWINGERDEN, Mark

IPC: F02D13/04 ,  F01L1/18 ,  F02D13/02 ,  F01L13/00

Abstract: An exhaust valve rocker arm for an exhaust valve rocker arm assembly operable in a combustion engine drive mode and an engine braking mode, and configured to selectively open first and second exhaust valves, includes a body defining an aperture to receive a rocker shaft such that the body is rotatable about the rocker shaft, a bore defined in the body, and a rotating stepped engine brake capsule disposed in the bore and having a castellation mechanism. The rotating stepped engine brake capsule is movable between a locked, engine brake active position and an unlocked, engine brake inactive position.

公开(公告)号：WO2018013037A1

公开(公告)日：2018-01-18

申请号：PCT/SE2017/050714

申请日：2017-06-28

Applicant: SCANIA CV AB

Inventor： GUNNARSSON, Niclas ,  HÖCKERDAL, Erik

IPC: F16H63/50 ,  F01L1/34 ,  F01L13/06 ,  F02D13/04 ,  F16H61/21

Abstract: The invention relates to a method for changing gear ratio in a gearbox (4) of a vehicle (1). The method comprises the steps of: a) receiving a first signal (S1) that the gear ratio should be changed; b) calculating the braking torque that the internal combus- tion engine (2) should provide in order to reduce the rotational speed of the internal combustion engine (2) to a target rotational speed at which the internal combustion engine (2) should be running after the gear ratio has been changed; c) phase-shifting the at least one second camshaft (28) in relation to the crankshaft (16), so that the at least one second camshaft (28) is phase-shifted to a state, where the at least one exhaust valve (24) is controlled in such a way, that it is opened during the expansion stroke of the internal combustion engine (2) and closed during the exhaust stroke of the internal combustion engine (2); d) disconnecting the internal combustion engine (2) from the at least one driving wheel (6); e) opening and closing the at least one exhaust valve (24) with a decompression device in the transition area between an exhaust stroke and an inlet stroke and also between a compression stroke and an expansion stroke, when the piston (12) is at a top dead centre in the cylinder (10) in order to achieve engine braking through compression in the cylinders (10) during the exhaust stroke and the compression stroke, and f) shifting gear in the gearbox (4). The invention also relates to a vehicle (1) comprising a gearbox (4) in which the gear ratio is changed by the method. (Fig. 4)

Abstract translation: 本发明涉及一种用于改变车辆（1）的齿轮箱（4）中的传动比的方法。 该方法包括以下步骤：a）接收第一信号（S1），该第一信号应该改变传动比; b）计算内燃机（2）应该提供的制动转矩，以便将内燃机（2）的转速降低到内燃机（2）应当运行的目标转速 传动比改变后; c）使所述至少一个第二凸轮轴（28）相对于所述曲轴（16）相移，从而使所述至少一个第二凸轮轴（28）相移至所述至少一个排气阀（28） 在内燃机（2）的膨胀冲程期间打开并且在内燃机（2）的排气冲程期间关闭; d）将所述内燃机（2）与所述至少一个驱动轮（6）断开; e）当所述活塞（12）位于所述活塞（12）处于所述过渡区域时，在排气冲程和入口冲程之间以及在压缩冲程和膨胀冲程之间的过渡区域中用减压装置打开和关闭所述至少一个排气阀 （10）中的上死点，以便在排气冲程和压缩冲程期间通过气缸（10）中的压缩实现发动机制动，以及f）在变速箱（4）中换档。 本发明还涉及一种包括齿轮箱（4）的车辆（1），其中通过该方法改变传动比。 （图4）

公开(公告)号：WO2017129262A1

公开(公告)日：2017-08-03

申请号：PCT/EP2016/051979

申请日：2016-01-29

Applicant: VOLVO TRUCK CORPORATION

Inventor： MOHLIN, Anders

IPC: F02D13/02 ,  F02D13/04 ,  F02D9/06 ,  F01L1/08 ,  F01L1/18 ,  F01L13/06 ,  F01L1/26

CPC classification number: F02D13/0242 ,  F01L1/08 ,  F01L1/181 ,  F01L1/267 ,  F01L13/065 ,  F01L2105/00 ,  F01L2800/00 ,  F02D9/06 ,  F02D13/04

Abstract: The invention provides an internal combustion engine comprising - a cylinder (301, 302) comprising a piston connected to a rotatable crankshaft, - an exhaust guide (501, 502) being arranged to guide a gas flow from the cylinder (301, 302), - an adjustable flow restriction element (601, 602) arranged to restrict the flow through the exhaust guide (501, 502), - an exhaust valve (7) arranged to control a communication between the cylinder (301, 302) and the exhaust guide (501, 502), and - an exhaust valve actuation assembly (8) for actuating the exhaust valve (7) so as to perform in each of a plurality of cycles of the cylinder (301, 302) an exhaust valve actuation sequence, - characterized in that the exhaust valve actuation assembly (8) is adapted to control the commencement of the exhaust valve actuation sequence to occur selectively at any crankshaft angle within a non-zero crankshaft angle interval.

Abstract translation: 本发明提供了一种内燃机，包括： - 气缸（301,302），其包括连接到可旋转曲轴的活塞; - 排气引导件（501,502），其被布置成引导气流从 所述汽缸（301,302）， - 可调节流量限制元件（601,602），所述可调节流量限制元件被布置成限制通过所述排气引导件（501,502）的流量， - 排气阀（7），其被设置成控制所述汽缸 以及 - 排气门致动组件（8），其用于致动所述排气门（7）以便在所述气缸（301,302,301,302）的多个循环中的每一个循环中执行所述排气门致动组件 ）排气门致动程序，其特征在于，排气门致动组件（8）适于控制排气门致动程序的开始，以在非零曲轴角度区间内的任何曲轴角度选择性地发生。

公开(公告)号：WO2015177127A1

公开(公告)日：2015-11-26

申请号：PCT/EP2015/060967

申请日：2015-05-19

Applicant: EATON SRL

Inventor： CECUR, Majo

IPC: F02D13/04 ,  F01L1/08 ,  F01L1/18 ,  F01L13/06 ,  F01L1/053

CPC classification number: F02D13/04 ,  F01L1/181 ,  F01L1/267 ,  F01L13/065

Abstract: A dual exhaust rocker arm assembly constructed in accordance to one example of the present disclosure is operable in a combustion engine mode and an engine braking mode. The dual exhaust valve rocker arm assembly selectively opens first and second exhaust valves and includes a rocker shaft, an exhaust valve rocker arm assembly, an engine brake rocker arm assembly and an engine brake capsule. The exhaust valve rocker arm assembly has an exhaust rocker arm that receives the rocker shaft and is configured to rotate around the rocker shaft. The exhaust rocker arm further defines a bore having an inner diameter. The engine brake rocker arm assembly has an engine brake rocker arm. The engine brake capsule is slidably received along the inner diameter of the bore of the exhaust valve rocker arm and translatable upon urging by the engine brake rocker arm.

Abstract translation: 根据本公开的一个示例构造的双排气摇臂组件可在内燃机模式和发动机制动模式中操作。 双排气门摇臂组件选择性地打开第一和第二排气门，并且包括摇臂轴，排气门摇臂组件，发动机制动摇臂组件和发动机制动器舱。 排气门摇臂组件具有排气摇臂，该排气摇臂接收摇臂轴并构造成围绕摇臂轴旋转。 排气摇臂进一步限定具有内径的孔。 发动机制动摇臂组件具有发动机制动摇臂。 发动机制动器囊沿着排气门摇臂的孔的内径可滑动地容纳，并可在发动机制动摇臂的推动下平移。

公开(公告)号：WO2014193349A1

公开(公告)日：2014-12-04

申请号：PCT/US2013/042970

申请日：2013-05-29

Applicant: INTERNATIONAL ENGINE INTELLECTUAL PROPERTY COMPANY, LLC

Inventor： HAMILTON, Bruce Winfield

IPC: F02D13/04

CPC classification number: F02D13/04 ,  F02D41/12 ,  F02D41/345 ,  F02D2400/02 ,  F02D2400/04 ,  Y02T10/44

Abstract: A method for enhancing engine brake horsepower. The method includes generating an engine brake horsepower by compressing air in a cylinder of an engine. Additionally, fuel is injected into the compressed air in the cylinder. The injected fuel is combusted in the compressed air in the cylinder prior to the piston reaching the top dead center position in the at least one cylinder. The compressed combustion products are also released before the piston passes the top dead center position. The combustion of the fuel during the engine braking event allows the engine braking to be a throttable event. Further, the quantity of fuel introduced into the cylinder for combustion may be adjusted so that the engine braking horsepower remains relatively consistent despite changes in engine speed.

Abstract translation: 一种提高发动机制动马力的方法。 该方法包括通过压缩发动机气缸中的空气来产生发动机制动马力。 此外，燃料被喷射到气缸中的压缩空气中。 在活塞到达至少一个气缸中的上止点位置之前，喷射的燃料在气缸中的压缩空气中燃烧。 在活塞通过上止点位置之前，压缩的燃烧产物也被释放。 在发动机制动事件期间燃料的燃烧允许发动机制动是可节流的事件。 此外，可以调节引入到燃烧用气缸中的燃料量，使得即使发动机转速发生变化，发动机制动马力也保持相对一致。