公开(公告)号：US11852097B2

公开(公告)日：2023-12-26

申请号：US17790430

申请日：2020-12-30

申请人： Cummins Inc.

发明人： David Michael Carey ,  Sanjay Manglam

IPC分类号： F02D41/40 ,  F02M65/00 ,  F02D41/38 ,  F02D41/20 ,  F02D41/22

CPC分类号： F02D41/403 ,  F02D41/20 ,  F02D41/3818 ,  F02D41/402 ,  F02D41/405 ,  F02M65/001 ,  F02M65/003 ,  F02D2041/224 ,  F02D2200/0602 ,  F02D2200/0612 ,  F02D2200/0614

摘要： Various embodiments of the present disclosure relate to methods and systems for measuring an injected fuel quantity during multipulse injection events in a common rail of a fuel system including a fuel pump to supply fuel to the common rail. The method, using a control unit, determines if each of the multipulse injection events in a normal operating condition includes a pilot pulse; in response to determining that the pilot pulse is included, obtaining an enforced separation value between the pilot pulse and the main pulse to emulate a single-pulse injection; while the fuel pump is temporarily shut off, performing a temporary enforced separation on a fraction of the multipulse injection events; measuring a pressure change in the common rail during the temporary enforced separation; and resuming the normal operating condition of the multipulse injection events after the pressure change is measured.

公开(公告)号：US11713728B2

公开(公告)日：2023-08-01

申请号：US17406547

申请日：2021-08-19

申请人： Tula Technology, Inc. ,  Cummins, Inc.

发明人： Benjamin Wolk ,  Justin Lee ,  Timothy Hayden Shipp

IPC分类号： F02D41/00 ,  F02D41/30 ,  F02D41/40

CPC分类号： F02D41/008 ,  F02D41/009 ,  F02D41/3011 ,  F02D41/403 ,  F02D2200/021 ,  F02D2200/0614

摘要： A variety of methods and arrangements are described for determining a pilot injection mass during skip fire operation of an internal combustion engine.

公开(公告)号：US20230175431A1

公开(公告)日：2023-06-08

申请号：US17643346

申请日：2021-12-08

申请人： Transportation IP Holdings, LLC

发明人： Adam Edgar Klingbeil ,  Thomas Michael Lavertu ,  Eric Dillen

IPC分类号： F02B43/02 ,  F02D41/00 ,  F02P5/15 ,  F02D41/40 ,  F02B47/02 ,  F01N3/20 ,  F02B43/12

CPC分类号： F02B43/02 ,  F02D41/0047 ,  F02P5/1502 ,  F02D41/403 ,  F02B47/02 ,  F01N3/2066 ,  F02B43/12 ,  F01N2610/02 ,  F02B2043/103

摘要： Methods and systems are provided for a multi-fuel engine. In one example, a method includes adjusting an ignitability of a combustion mixture comprising ammonia and hydrogen. The combustion mixture may further include a carbon-containing fuel.

公开(公告)号：US20190170081A1

公开(公告)日：2019-06-06

申请号：US16208626

申请日：2018-12-04

申请人： DENSO CORPORATION

发明人： Ko KOMATSU

IPC分类号： F02D41/40 ,  F02B3/06 ,  F02D35/02

CPC分类号： F02D41/402 ,  F02B3/06 ,  F02D35/02 ,  F02D41/403 ,  F02D2041/389 ,  F02D2200/0602 ,  F02D2200/0614 ,  F02D2200/0616 ,  F02D2250/04 ,  F02M57/005

摘要： A fuel injection control device includes a reference interval calculation section that calculates a reference interval between an end time of a decrease interval where the pressure decreases as a fuel injection rate increases and a start time of an increase interval where the pressure increases as the fuel injection rate decreases on a pressure waveform detected by the pressure sensor, an integration interval setting section that sets, in the reference interval, an integration interval where an influence of a disturbance on the fuel pressure decrease due to a target injection is suppressible, and a decrease amount calculation section that calculates a corresponding pressure decrease amount, which is a fuel pressure decrease amount corresponding to a maximum injection rate of fuel of the target injection, based on an integral value obtained by integrating the fuel pressure decrease amount due to the target injection in the integration interval.

公开(公告)号：US20180320616A1

公开(公告)日：2018-11-08

申请号：US15773584

申请日：2016-09-13

申请人： DENSO CORPORATION

发明人： Shinya HOSHI ,  Atsunori OKABAYASHI

IPC分类号： F02D41/02 ,  F02D45/00 ,  F02D13/02 ,  F02D19/06 ,  F02D41/00

CPC分类号： F02D41/02 ,  F02D13/0207 ,  F02D19/0636 ,  F02D35/02 ,  F02D35/028 ,  F02D41/0025 ,  F02D41/005 ,  F02D41/0077 ,  F02D41/047 ,  F02D41/403 ,  F02D45/00 ,  F02D2041/1433

摘要： An estimation device that is applicable to a combustion system including an internal combustion engine includes a mixing acquisition unit, a combustion amount estimation unit, a region estimation unit, and a timing estimation unit. The mixing acquisition unit acquires a mixing ratio of various components contained in the fuel used for combustion in the internal combustion engine. The combustion amount estimation unit estimates a combustion amount of the fuel caused by a pilot combustion produced by injecting the fuel into a combustion chamber of the internal combustion engine with a pilot injection, based on the mixing ratio acquired by the mixing acquisition unit. The region estimation unit estimates a combustion region of the pilot combustion in the combustion chamber based on the mixing ratio. The timing estimation unit estimates an ignition timing, at which an ignition occurs in the combustion chamber with the pilot injection, based on the mixing ratio.

公开(公告)号：US10119490B1

公开(公告)日：2018-11-06

申请号：US15586108

申请日：2017-05-03

申请人： Ford Global Technologies, LLC

发明人： Gopichandra Surnilla ,  Adithya Pravarun Re Ranga ,  Mohannad Hakeem ,  Joseph Norman Ulrey ,  Calvin Trescott

IPC分类号： F01N3/02 ,  F01N3/10 ,  F01N3/20 ,  F02D41/02 ,  F02D35/02 ,  F02D41/30 ,  F02D41/14 ,  F02M69/04 ,  F01N9/00 ,  F02D41/40 ,  F01N3/021 ,  G01M15/11 ,  G01M15/12

CPC分类号： F02D41/3094 ,  F01N3/021 ,  F01N9/002 ,  F02D35/027 ,  F02D35/028 ,  F02D41/029 ,  F02D41/1498 ,  F02D41/402 ,  F02D41/403 ,  F02D2200/025 ,  F02M69/044 ,  F02M69/045 ,  F02M69/046 ,  G01M15/11 ,  G01M15/12

摘要： Methods and systems are provided for adjusting engine operating conditions for mitigation of pre-ignition in one or more engine cylinder. In one example, a method may include, in response to indication of pre-ignition, manifold charge cooling may be increased by increasing the portion of fuel delivered to the engine via manifold injection relative to the portion to fuel delivered via one or more of port and direct injection, while maintaining engine operation at or around a stoichiometric air-fuel ratio.

公开(公告)号：US20180179968A1

公开(公告)日：2018-06-28

申请号：US15849802

申请日：2017-12-21

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Hajime SHIMIZU

IPC分类号： F02D41/00

CPC分类号： F02D41/0027 ,  F02B9/02 ,  F02D35/028 ,  F02D41/3005 ,  F02D41/3047 ,  F02D41/403 ,  F02D2200/02 ,  Y02T10/44

摘要： A control device for an internal combustion engine provided with a combustion control part sequentially injecting at least a primary auxiliary fuel, secondary auxiliary fuel, and main fuel from a fuel injector in predetermined operating regions, causing compressive ignition sequentially from a premix containing the primary auxiliary fuel after injection of the main fuel, and causing compressive ignition of a premix containing the main fuel using heat generated when causing compressive ignition of a premix containing the secondary auxiliary fuel, the combustion control part setting a target injection amount and target injection timing of the primary auxiliary fuel so that a peak value and a slant of a heat generation rate pattern formed by a premix containing the primary auxiliary fuel is smaller than peak values and slants of heat generation rate patterns formed by the premixes containing the secondary auxiliary fuel and the main fuel.

公开(公告)号：US09970407B2

公开(公告)日：2018-05-15

申请号：US14831912

申请日：2015-08-21

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Cherian A. Idicheria ,  Gerald A. Silvas

IPC分类号： F02P9/00 ,  H01T13/50 ,  H01T19/02 ,  F02P23/04 ,  F02D41/30 ,  F02D13/02 ,  F02D41/40 ,  F02D37/02 ,  F02D41/00 ,  F02P5/04 ,  F02D41/38 ,  F02M61/18 ,  H05H1/24

CPC分类号： F02P23/04 ,  F02D13/0261 ,  F02D37/02 ,  F02D41/0002 ,  F02D41/009 ,  F02D41/3017 ,  F02D41/3041 ,  F02D41/3047 ,  F02D41/402 ,  F02D41/403 ,  F02D2041/001 ,  F02D2041/389 ,  F02M61/1806 ,  F02P5/045 ,  F02P9/007 ,  H01T13/50 ,  H01T19/02 ,  H05H2001/2412 ,  H05H2001/2431 ,  H05H2001/245 ,  Y02T10/128 ,  Y02T10/18 ,  Y02T10/42 ,  Y02T10/44

摘要： An internal combustion engine includes a plasma ignition system having an in-cylinder dielectric barrier-discharge igniter, and a direct-injection fuel injector having an in-cylinder fuel nozzle. The fuel nozzle protrudes into the combustion chamber proximal to the igniter. A controller operatively connects to the internal combustion engine, the plasma ignition system and the fuel injection system. The controller controls the internal combustion engine at an air/fuel ratio that is lean of stoichiometry. The fuel injector injects a first fuel pulse prior to activation of the igniter, and then the igniter initiates a plasma energy pulse. The fuel injector is controlled to inject a second fuel pulse during the plasma energy pulse.

公开(公告)号：US09964085B2

公开(公告)日：2018-05-08

申请号：US14780936

申请日：2014-03-12

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Masato Ikemoto

IPC分类号： F02M63/02 ,  F02M57/00 ,  F02D41/22 ,  F02D35/02 ,  F02D41/40 ,  F02D41/12

CPC分类号： F02M57/005 ,  F02D35/023 ,  F02D35/025 ,  F02D41/123 ,  F02D41/221 ,  F02D41/403 ,  F02D2041/224 ,  F02D2200/0614 ,  F02M63/0225 ,  Y02T10/40

摘要： A fuel injection device including an injector that injects fuel into a cylinder of an engine; a fuel injection amount obtaining unit that obtains a fuel injection amount of fuel injected by the injector; a heat generation amount obtaining unit that obtains a heat generation amount of the fuel injected by the injector and ignited; and a control unit that determines that injector abnormality occurs, when determining that a difference between a fuel injection amount obtained by the fuel injection amount obtaining unit and a reference fuel injection amount is within a predetermined range and that a heat generation amount obtained by the heat generation amount obtaining unit is greater than a reference heat generation amount corresponding to the reference fuel injection amount. Accordingly, whether or not injection hole corrosion occurs in the injector can be determined.

公开(公告)号：US09786181B2

公开(公告)日：2017-10-10

申请号：US14922443

申请日：2015-10-26

申请人： Hyundai Motor Company

发明人： Won Jin Jo ,  Hyoung Geun Kwon ,  Tae Won Lim ,  Changjae Lee ,  Seokyoul Yang

IPC分类号： F02D41/40 ,  G08G1/00 ,  B60W30/182 ,  B60W10/06 ,  F02D29/02 ,  F02D41/02

CPC分类号： G08G1/202 ,  B60W10/06 ,  B60W30/182 ,  F02D29/02 ,  F02D41/029 ,  F02D41/403 ,  F02D41/405 ,  F02D2200/60 ,  F02D2200/701 ,  Y02T10/44

摘要： Autonomous diesel vehicles and control methods thereof are disclosed. An autonomous vehicle may include a peripheral information collecting unit configured to collect peripheral information necessary for autonomous travelling through an image camera and a laser scanner, a main control unit configured to control the autonomous travelling with reference to the peripheral information collected by the peripheral information collecting unit, a passenger monitoring unit configured to check whether a passenger exists inside the vehicle through a sensor and transmit a result of the check to the main control unit, and an engine control unit configured to control driving of an engine and injection of fuel of an injector according to a control instruction of the main control unit. When the passenger is inside the vehicle, the main control unit performs a pilot injection control, and when the passenger is not inside the vehicle, the main control unit omits the pilot injection control.