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公开(公告)号：US20240084771A1
公开(公告)日：2024-03-14
申请号：US18514595
申请日：2023-11-20
申请人： Cummins Inc.
CPC分类号： F02M69/465 , F02M69/042 , F02M69/54
摘要： Low-cost fuel injection systems for internal combustion engines, including vapor fuel engines are provided.
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公开(公告)号：US20220145791A1
公开(公告)日：2022-05-12
申请号：US17648733
申请日：2022-01-24
申请人： Cummins Inc.
摘要： Systems and devices are disclosed for controlling fluid flow to piston cooling nozzles with a fluid flow control device configured to open when an internal combustion engine requires piston cooling at high speed but remains open for a period of time after the engine speed drops below a threshold to prevent heat soak damage to the pistons.
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公开(公告)号：US11092088B2
公开(公告)日：2021-08-17
申请号：US16902728
申请日：2020-06-16
申请人： Cummins Inc.
摘要： An internal combustion engine system includes an engine with a plurality of pistons housed in respective ones of a plurality of cylinders, an air intake system to provide air to the plurality of cylinders through respective ones of a plurality of intake valves, an exhaust system to release exhaust gas from the plurality of cylinders through respective one of a plurality of exhaust valves. A valve train is provided for cylinder deactivation of a first part of the plurality of cylinders and compression release braking on a second part of the plurality of cylinders.
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公开(公告)号：US11035263B2
公开(公告)日：2021-06-15
申请号：US16424891
申请日：2019-05-29
申请人： Cummins Inc.
IPC分类号： F01L13/00 , F01L1/344 , F02D13/02 , F01L13/08 , F02D9/06 , F01L1/26 , F01L13/06 , F01L1/18 , F02D13/04 , F01L1/047 , F01L1/053 , F01L1/20 , F01L1/08 , F01L9/20
摘要： Systems, apparatuses and methods are disclosed that include an internal combustion engine including a plurality of cylinders operable by a valve actuation mechanism including a lifting mechanism having a compression brake valve profile configured to selectively lift the exhaust valves on a downstroke of the cylinders in response to a cranking condition of the internal combustion engine, wherein the compression braking valve profile is phased to the upstroke of the pistons.
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公开(公告)号：US20160032878A1
公开(公告)日：2016-02-04
申请号：US14448176
申请日：2014-07-31
申请人： CUMMINS INC.
发明人： Adam C. Cecil
IPC分类号： F02M59/10
CPC分类号： F04B1/0435 , F01B31/24 , F01L1/08 , F01L1/146 , F01L13/0005 , F01L13/0036 , F01L2105/00 , F01L2820/041 , F02D19/0649 , F02D19/0684 , F02M39/02 , F02M43/00 , F02M43/02 , F02M59/027 , F02M59/102 , F02M59/38 , F04B9/042 , F04B27/0428 , F04B27/0437 , Y02T10/36
摘要： A mechanical fuel pump is disclosed for delivering fuel to an engine of a vehicle, the mechanical fuel pump having an activated configuration and a deactivated configuration. A dual fuel system and method are also disclosed for use with the mechanical fuel pump.
摘要翻译： 公开了一种用于将燃料输送到车辆的发动机的机械燃料泵，所述机械燃料泵具有激活的配置和停用配置。 还公开了与机械燃料泵一起使用的双燃料系统和方法。
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公开(公告)号：US20140190433A1
公开(公告)日：2014-07-10
申请号：US14162161
申请日：2014-01-23
申请人： Cummins Inc.
发明人： David M. Barnes , Adam C. Cecil
IPC分类号： F01L1/047
CPC分类号： F01L1/047 , F01L1/053 , F01L1/18 , F01L1/26 , F01L1/267 , F01L1/34 , F01L13/0021 , F01L13/0026 , F01L2001/0473 , F01L2001/34489 , F02D13/0269 , F02D2013/0292 , F02M26/01 , Y02T10/142 , Y10T29/49293
摘要： A variable valve actuation system in one form includes a rocker coupled with a valve stem at one end and a cam follower at the other end. The rocker is operable to rotate about a fixed axis and the cam follower includes a set of lower rollers operable to follow one cam lobe and an upper roller operable to follow another cam lobe. A leaf spring can be used to couple the cam follower with the rocker. A cam shaft can have a nested configuration that includes an inner shaft, an intermediate tube, and an outer tube. Cam lobes can be fastened to the cam shaft by fastening through each of the inner shaft, intermediate tube, and outer tube. The cam lobes can be attached by at least two devices inserted from either side of the cam shaft and that are not inserted at least through the inner shaft.
摘要翻译： 一种形式的可变气门致动系统包括在一端与阀杆连接的摇杆和另一端的凸轮从动件。 摇杆可操作以围绕固定轴线旋转，并且凸轮从动件包括一组可操作以跟随一个凸轮凸角的下辊和可操作以跟随另一凸轮凸角的上辊。 可以使用板簧将凸轮从动件与摇杆联接。 凸轮轴可以具有包括内轴，中间管和外管的嵌套构造。 凸轮凸起可以通过固定在内轴，中间管和外管中的每一个而紧固到凸轮轴。 凸轮凸角可以通过从凸轮轴的任一侧插入的至少两个装置来连接，并且至少不穿过内轴。
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公开(公告)号：US20240360777A1
公开(公告)日：2024-10-31
申请号：US18688352
申请日：2022-09-01
申请人： Cummins, Inc.
发明人： Gregory J. MITCHUM , Adam C. Cecil , David M. BARNES , Scott R. BARDAKJY , Nathaniel P. HASSALL
CPC分类号： F01L1/181 , F01L1/047 , F01L1/20 , F01L13/0005 , F01L2013/001
摘要： An internal combustion engine system includes an engine with a plurality of pistons housed in respective ones of a plurality of cylinders. A valve train is provided for opening and closing intake and exhaust valves of the cylinders during nominal engine operations. The valve train is also configured for cylinder deactivation and to provide one or more selected lift profiles for opening and closing of the intake and/or exhaust valves.
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公开(公告)号：US11698033B2
公开(公告)日：2023-07-11
申请号：US17449992
申请日：2021-10-05
申请人： Cummins Inc.
CPC分类号： F02D13/0234 , F01L1/047 , F01L1/18 , F01L1/24 , F01L2001/2444
摘要： A variable valve timing assembly is provided for extending a duration of an intake valve opening. The variable valve timing assembly includes an intake rocker mounted on a pedestal and operable by a cam lobe to open and close the intake valve. The intake rocker includes a lever extension, and a holding member in the pedestal is lockable in position by a hydraulic circuit in the pedestal to contact the lever extension of the intake rocker and hold the intake valve in the open position. A reset pin in the pedestal is actuatable by the cam lobe to release the holding member to allow the intake valve to close.
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公开(公告)号：US11512653B2
公开(公告)日：2022-11-29
申请号：US17378996
申请日：2021-07-19
申请人： Cummins Inc.
摘要： An internal combustion engine system includes an engine with a plurality of pistons housed in respective ones of a plurality of cylinders, an air intake system to provide air to the plurality of cylinders through respective ones of a plurality of intake valves, an exhaust system to release exhaust gas from the plurality of cylinders through respective one of a plurality of exhaust valves. A valve train is provided for cylinder deactivation of a first part of the plurality of cylinders and compression release braking on a second part of the plurality of cylinders.
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公开(公告)号：US11377985B2
公开(公告)日：2022-07-05
申请号：US16815444
申请日：2020-03-11
申请人： Cummins Inc.
IPC分类号： F01L13/06 , F01L1/14 , F01L13/00 , F01L1/25 , F02D13/02 , F02D13/04 , F01L1/18 , F01L1/053 , F01N3/00 , F01L1/344
摘要： A system includes an engine with a plurality of pistons housed in respective ones of a plurality of cylinders, an air intake system provides air to the plurality of cylinders through respective ones of a plurality of intake valves, an exhaust system to release exhaust gas from the plurality of cylinders through one of a plurality of exhaust valves, and a controller coupled to a sensor to control a switching tappet for compression release braking. Alternatively to a tappet, the system includes a roller finger follower controlling an opening and closing timing of exhaust valves, the roller finger follower has an inner roller follower arm adjacent an outer sliding follower, and a controller that in response to an engine braking request locks the inner roller follower arm with the outer sliding follower to contact a second cam lobe and open the exhaust valve during a compression stroke of the cylinder.
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