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公开(公告)号：US11486386B2
公开(公告)日：2022-11-01
申请号：US17070299
申请日：2020-10-14
Applicant: Cummins Inc.
Inventor： Donald J. Benson , Bela Doszpoly , Paul Peavler
Abstract: A fluid pump comprising a fluid inlet configured to receive a fluid, a plunger configured to reciprocate within a cylinder from a top dead center position to a bottom dead center position and back to the top dead center position during a given pumping cycle, a pumping chamber defined by the cylinder and the plunger, the pumping chamber being configured to receive the fluid from the fluid inlet, a control valve configured to open to allow fluid to be provided to the pumping chamber, and close after the plunger has passed the bottom dead center position, and a fluid outlet configured to receive a delivery amount of the fluid from the pumping chamber, wherein a first amount of fluid is configured to be provided to the pumping chamber, the first amount of fluid being greater than the delivery amount of fluid.
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公开(公告)号：US20210340931A1
公开(公告)日：2021-11-04
申请号：US17328790
申请日：2021-05-24
Applicant: Cummins Inc.
Inventor： David M. Carey , Syed Shah Jalal , Richard J. Dudek , Ulf Carlsson , Paul Peavler
Abstract: Methods and systems, using a controller (20), for performing fuel pressure control operation of an engine (12) having at least one cylinder (16) is disclosed. The controller (20) includes a fuel system control unit (42) configured to control a fuel pressure applied to at least one injector (18) of the engine (12) during a motoring condition period (412) based on a commanded pulse train duration (410). During the motoring condition period (412), no combustion occurs in the at least one cylinder (16) of the engine (12). The commanded pulse train duration is a time period during which the at least one injector (18) of the engine (12) is activated for a drain operation. The fuel system control unit (42) is configured to command the at least one injector (18), for the commanded pulse train duration during the motoring condition period (412), to release fuel from the at least one injector (18) without injecting the fuel into the at least one cylinder (16) of the engine (12).
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公开(公告)号：US11015548B2
公开(公告)日：2021-05-25
申请号：US16772096
申请日：2017-12-14
Applicant: Cummins Inc.
Inventor： David M. Carey , Syed Shah Jalal , Richard J. Dudek , Ulf Carlsson , Paul Peavler
Abstract: Methods and systems, using a controller (20), for performing fuel pressure control operation of an engine (12) having at least one cylinder (16) is disclosed. The controller (20) includes a fuel system control unit (42) configured to control a fuel pressure applied to at least one injector (18) of the engine (12) during a motoring condition period (412) based on a commanded pulse train duration (410). During the motoring condition period (412), no combustion occurs in the at least one cylinder (16) of the engine (12). The commanded pulse train duration is a time period during which the at least one injector (18) of the engine (12) is activated for a drain operation. The fuel system control unit (42) is configured to command the at least one injector (18), for the commanded pulse train duration during the motoring condition period (412), to release fuel from the at least one injector (18) without injecting the fuel into the at least one cylinder (16) of the engine (12).
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公开(公告)号：US09644590B2
公开(公告)日：2017-05-09
申请号：US14170129
申请日：2014-01-31
Applicant: Cummins Inc.
Inventor： Paul Peavler , Donald J. Benson , Paul Douglas Free , Jeffrey C. Huang , Eric Benham , C. Edward Morris, Jr.
CPC classification number: F02M69/04 , F02M47/027 , F02M55/008 , F02M2200/28 , F02M2200/315
Abstract: A fuel injector has a plurality of injection fuel delivery passages, which transport fuel from a proximate end to an injector cavity near the distal end of the fuel injector, wherein less than a total number of injection fuel delivery passages include an orifice. This configuration provides a reduction in fueling variation from pulse to pulse (multi-pulse) with respect to pulse separation due to pressure variation while allowing a sufficient amount of fuel flow to the injector cavity. Thus, the consistency of Start-Of-Injection (SOI) and opening rate both improve significantly and advantageously. For compactness, the orifices may be positioned in a cover plate used to retain the components of the injection control valve assembly and may further be arranged in an arc segment when viewed along a longitudinal axis.
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5.发明授权公开(公告)号：US11725604B2
公开(公告)日：2023-08-15
申请号：US17630466
申请日：2019-08-02
Applicant: Cummins Inc.
Inventor： Paul Peavler , Donald J. Benson , David Michael Carey , Timothy J. Viola
CPC classification number: F02D41/22 , F02D41/3836 , F02D41/3845 , F02D2041/225 , F02D2200/0602
Abstract: The present disclosure relates to a method for controlling pressure of an engine, including a controller structured to implement the method and an engine system including the controller. More specifically, the present disclosure relates to a method based on a mass balance analysis of a fuel system to determine how much mass needs to be pumped to maintain or achieve a certain pressure for the engine. In some embodiments, the method analyzes how much mass can be pumped by each pumping event based on current engine conditions. The analysis is performed over the smallest repeatable pump events and cylinder events cycle, or “subcycle,” based on the number of pump events and cylinder events for a given engine configuration.
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Patent Agency Ranking
公开(公告)号：US10968857B2
公开(公告)日：2021-04-06
申请号：US16344764
申请日：2017-10-24
Applicant: Cummins Inc.
Inventor： Donald J. Benson , Paul Peavler
Abstract: A method and system is provided of controlling a pump having a pumping element configured to provide pressurized fuel to a common rail accumulator coupled to a plurality of fuel injectors configured to inject fuel into a corresponding plurality of cylinders of an engine, comprising: receiving rail pressure values indicating a current fuel pressure in the accumulator; and responding to the received at least one rail pressure value by controlling operation of the pumping element during each potential pumping event of the pumping element to generate actual pumping events during at least some of the potential pumping events to cause the rail pressure values to remain within a desired range and to at least one of increase an overall efficiency of the pump, decrease audible noise generated by the pump, increase reliability of the pump and reduce injection pressure variations at the plurality of fuel injectors.
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7.发明申请公开(公告)号：US20220252018A1
公开(公告)日：2022-08-11
申请号：US17630466
申请日：2019-08-02
Applicant: Cummins Inc.
Inventor： Paul Peavler , Donald J. Benson , David Michael Carey , Timothy J. Viola
Abstract: The present disclosure relates to a method for controlling pressure of an engine, including a controller structured to implement the method and an engine system including the controller. More specifically, the present disclosure relates to a method based on a mass balance analysis of a fuel system to determine how much mass needs to be pumped to maintain or achieve a certain pressure for the engine. In some embodiments, the method analyzes how much mass can be pumped by each pumping event based on current engine conditions. The analysis is performed over the smallest repeatable pump events and cylinder events cycle, or “subcycle,” based on the number of pump events and cylinder events for a given engine configuration.
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公开(公告)号：US20210131421A1
公开(公告)日：2021-05-06
申请号：US17070299
申请日：2020-10-14
Applicant: Cummins Inc.
Inventor： Donald J. Benson , Bela Doszpoly , Paul Peavler
Abstract: A fluid pump comprising a fluid inlet configured to receive a fluid, a plunger configured to reciprocate within a cylinder from a top dead center position to a bottom dead center position and back to the top dead center position during a given pumping cycle, a pumping chamber defined by the cylinder and the plunger, the pumping chamber being configured to receive the fluid from the fluid inlet, a control valve configured to open to allow fluid to be provided to the pumping chamber, and close after the plunger has passed the bottom dead center position, and a fluid outlet configured to receive a delivery amount of the fluid from the pumping chamber, wherein a first amount of fluid is configured to be provided to the pumping chamber, the first amount of fluid being greater than the delivery amount of fluid.
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公开(公告)号：US20190331053A1
公开(公告)日：2019-10-31
申请号：US16344764
申请日：2017-10-24
Applicant: Cummins Inc.
Inventor： Donald J. Benson , Paul Peavler
Abstract: A method and system is provided of controlling a pump having a pumping element configured to provide pressurized fuel to a common rail accumulator coupled to a plurality of fuel injectors configured to inject fuel into a corresponding plurality of cylinders of an engine, comprising: receiving rail pressure values indicating a current fuel pressure in the accumulator; and responding to the received at least one rail pressure value by controlling operation of the pumping element during each potential pumping event of the pumping element to generate actual pumping events during at least some of the potential pumping events to cause the rail pressure values to remain within a desired range and to at least one of increase an overall efficiency of the pump, decrease audible noise generated by the pump, increase reliability of the pump and reduce injection pressure variations at the plurality of fuel injectors.
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公开(公告)号：US20150219054A1
公开(公告)日：2015-08-06
申请号：US14170129
申请日：2014-01-31
Applicant: Cummins Inc.
Inventor： Paul Peavler , Donald J. Benson , Paul Douglas Free , Jeffrey C. Huang , Eric Benham , C. Edward Morris, JR.
IPC: F02M69/04
CPC classification number: F02M69/04 , F02M47/027 , F02M55/008 , F02M2200/28 , F02M2200/315
Abstract: A fuel injector has a plurality of injection fuel delivery passages, which transport fuel from a proximate end to an injector cavity near the distal end of the fuel injector, wherein less than a total number of injection fuel delivery passages include an orifice. This configuration provides a reduction in fueling variation from pulse to pulse (multi-pulse) with respect to pulse separation due to pressure variation while allowing a sufficient amount of fuel flow to the injector cavity. Thus, the consistency of Start-Of-Injection (SOI) and opening rate both improve significantly and advantageously. For compactness, the orifices may be positioned in a cover plate used to retain the components of the injection control valve assembly and may further be arranged in an arc segment when viewed along a longitudinal axis.
Abstract translation: 燃料喷射器具有多个喷射燃料输送通道，其将燃料从燃料喷射器的远端附近的近端运送到喷射器腔，其中小于喷射燃料输送通道的总数包括孔口。 该配置提供了由于压力变化而相对于脉冲分离而从脉冲到脉冲（多脉冲）的加油变化减少，同时允许足够量的燃料流入喷射器腔。 因此，起始注入（SOI）和开放率的一致性都显着和有利地改善。 为了紧凑性，孔可以定位在用于保持喷射控制阀组件的部件的盖板中，并且当沿着纵向轴线观察时可以进一步布置在弧形段中。
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