公开(公告)号：US12196151B2

公开(公告)日：2025-01-14

申请号：US18560688

申请日：2022-01-21

Applicant: WEICHAI POWER CO., LTD.

Inventor： Xuguang Tan ,  Bin Pang ,  Dehui Tong ,  Peng Zhou ,  Xiaoxin Liu ,  Yuncheng Gu ,  Xu Cheng

IPC: F02D41/40 ,  F02D41/38

Abstract: A control method for the combustion system comprises: a fuel injector conducts first primary spray and second primary spray at intervals, and the fuel injector injects fuel to a first arc ridge during the first primary spray; and the fuel injector sprays fuel to a second arc ridge during the second primary spray. By adopting a combustion chamber having two arc ridges and respectively injecting fuel to the two arc ridges by means of the fuel injector, it can be ensured that the amount of fuel shared by each arc ridge is reduced, gathering the fuel at a single arc ridge can be avoided, and it is beneficial to exert the improvement effect of the arc ridge on a wall impact jet flow velocity field at the tail end of a fuel beam, such that the fuel and gas distribution in a cylinder is facilitated.

公开(公告)号：US12158119B2

公开(公告)日：2024-12-03

申请号：US18385132

申请日：2023-10-30

Applicant: YANMAR HOLDINGS CO., LTD.

Inventor： Yusuke Honda ,  Kazuteru Toshinaga

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

Abstract: The present disclosure describes an engine system that can achieve at least one of the followings: suppressing of generating of nitrogen oxides and suppressing of remaining of uncombusted hydrocarbons. The engine system has a combustion chamber to which air and a gas fuel are supplied, and is configured to combust the gas fuel. The engine system includes a liquid fuel injecting unit, and a control unit. The liquid fuel injecting unit is configured to inject a liquid fuel thereby to ignite the gas fuel. The control unit is configured to control the liquid fuel injecting unit. The control unit is configured to control the liquid fuel injecting unit so that injection of the liquid fuel is performed after a flame propagation after ignition of the gas fuel is ended.

公开(公告)号：US12146451B2

公开(公告)日：2024-11-19

申请号：US18513778

申请日：2023-11-20

Applicant: Cummins Inc.

Inventor： David Michael Carey ,  Sanjay Manglam

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

Abstract: 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：US12129778B2

公开(公告)日：2024-10-29

申请号：US18472272

申请日：2023-09-22

Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANY

Inventor： David Bergeal ,  Andrew Chiffey ,  Daniel Hatcher ,  Francois Moreau ,  Paul Phillips

IPC: F01N3/08 ,  B01D53/94 ,  F01N3/20 ,  F01N3/28 ,  F01N13/00 ,  F02D41/02 ,  F02D41/40 ,  F02D41/38

CPC classification number: F01N3/0835 ,  B01D53/9418 ,  B01D53/9431 ,  B01D53/944 ,  B01D53/9477 ,  B01D53/9486 ,  B01D53/9495 ,  F01N3/0842 ,  F01N3/2013 ,  F01N3/2066 ,  F01N3/2803 ,  F01N3/2842 ,  F01N13/009 ,  F02D41/024 ,  F02D41/401 ,  B01D2255/1021 ,  B01D2255/1023 ,  F01N2370/02 ,  F02D2041/389

Abstract: A system comprising (i) a vehicular compression ignition engine comprising one or more engine cylinders and one or more electronically-controlled fuel injectors therefor; (ii) an exhaust line for the engine comprising: a first emissions control device comprising a first honeycomb substrate, which comprises a hydrocarbon adsorbent component; and a second emissions control device comprising an electrically heatable element and a catalysed second honeycomb substrate, which comprises a rhodium-free platinum group metal comprising platinum, wherein the electrically heatable element is disposed upstream from the catalysed second honeycomb substrate and wherein both the electrically heatable element and the catalysed second honeycomb substrate are disposed downstream from the first honeycomb substrate; a third emissions control device, which is a third honeycomb substrate comprising an ammonia-selective catalytic reduction catalyst disposed downstream from the second emissions control device; and one or more temperature sensors located: upstream of the electrically heatable element and/or upstream of the first honeycomb substrate; and between the electrically heatable element and the catalysed second honeycomb substrate; and (iii) an engine control unit comprising a central processing unit pre-programmed, when in use, to control both a heating activation state of the electrically heatable element; an injection timing strategy of the one or more electronically-controlled fuel injector to increase the temperature of at least the first emissions control device following key-on/cold-starting a vehicle comprising the system, wherein the one or more temperature sensors are electrically connected to the engine control unit for feedback control in the system.

公开(公告)号：US12110832B2

公开(公告)日：2024-10-08

申请号：US17817036

申请日：2022-08-03

Applicant: Caterpillar Inc.

Inventor： Andrew O. Marrack ,  Mitchell B. Juchems

IPC: F02D41/20 ,  F02D41/40

CPC classification number: F02D41/20 ,  F02D41/401 ,  F02D2041/2048 ,  F02D2041/2055 ,  F02D2041/2058

Abstract: A fuel injection installation method includes detecting an actuation timing of a first valve of a fuel injector, detecting an actuation timing of a second valve of the fuel injector, detecting a return timing of the first valve of the fuel injector, and detecting a return timing of the second valve of the fuel injector. The method includes, for one or more fuel injection events, modifying at least one of: a maximum amplitude of solenoid current, an average amplitude of solenoid current, a start time of solenoid current, an end time of solenoid current, or a total time of solenoid current. The modification is based on the actuation timing of the first valve, the actuation timing of the second valve, the return timing of the first valve, and the return timing of the second valve, and may be performed for installation of the fuel injector.

公开(公告)号：US12092045B2

公开(公告)日：2024-09-17

申请号：US17632037

申请日：2020-04-08

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Yuzuru Tohta ,  Kohei Kamiya ,  Noriaki Ejiri ,  Tomoaki Kobayashi

IPC: F02D41/00 ,  F02D41/02 ,  F02D41/16 ,  F02D41/40

CPC classification number: F02D41/0085 ,  F02D41/0225 ,  F02D41/029 ,  F02D41/16 ,  F02D41/401 ,  F02D2200/1002 ,  F02D2200/101 ,  F02D2200/602 ,  F02D2250/28

Abstract: A control method for an internal combustion engine configured to implement fuel cut in response to becoming zero of an accelerator opening degree during travel of a vehicle, and generate an antiphase torque after the fuel cut by supplying fuel to a cylinder, in order to cancel out vibration of the vehicle caused due to the fuel cut includes setting a timing of generating the antiphase torque to be later than that for normal operation, in response to implementation of the fuel cut under high torque idle operation in which a torque of the internal combustion engine immediately before the fuel cut where the accelerator opening degree is zero is higher than that in the normal operation.

公开(公告)号：US20240263593A1

公开(公告)日：2024-08-08

申请号：US18562857

申请日：2022-04-20

Applicant: HITACHI, LTD.

Inventor： Atsushi SHIMADA ,  Yoshihiro SUKEGAWA ,  Kengo KUMANO

IPC: F02D35/02 ,  F02D41/00 ,  F02D41/40

CPC classification number: F02D35/028 ,  F02D41/0087 ,  F02D41/401

Abstract: An electronic control device for mixed hydrogen combustion includes a combustion timing detection unit that detects the combustion timing of an engine; and an abnormal state detection unit that detects an abnormal state, in which a type of abnormality occurring in the engine has been determined, on the basis of the combustion timing and a second fuel supply ratio calculated from the supply amount of hydrocarbon fuel supplied by a first fuel supply device and the supply amount of a second fuel supplied by a second fuel supply device. A control mode determination unit determines a control mode corresponding to the abnormal state, controls the supply amount of hydrogen to be supplied by the second fuel supply device on the basis of the control mode, and outputs the control mode to an engine controller for controlling the engine.

公开(公告)号：US12025064B2

公开(公告)日：2024-07-02

申请号：US18493318

申请日：2023-10-24

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Akira Yamashita

IPC: F02M7/00 ,  F02D13/02 ,  F02D35/02 ,  F02D41/00 ,  F02D41/40 ,  F02P5/153

CPC classification number: F02D35/023 ,  F02D13/0234 ,  F02D41/0027 ,  F02D41/401 ,  F02P5/153

Abstract: The ECM calculates a peak value of an in-cylinder pressure before ignition based on the operating state of the hydrogen engine. When the peak value of the in-cylinder pressure before ignition exceeds a threshold value, the ECM performs an advancement correction of the ignition timing such that the peak value becomes less than or equal to the threshold value.

公开(公告)号：US20240200504A1

公开(公告)日：2024-06-20

申请号：US17909933

申请日：2021-05-06

Applicant: Cummins Inc.

Inventor： Mayur H. Borate ,  Srinivas Kumar Mulukutia ,  Shailesh Nair ,  David Michael Carey ,  Syed Shah Jalal

IPC: F02D41/22 ,  F02D41/00 ,  F02D41/40

CPC classification number: F02D41/221 ,  F02D41/009 ,  F02D41/401 ,  F02D2041/224 ,  F02D2041/228 ,  F02D2200/0602 ,  F02D2200/0618

Abstract: At least some embodiments of present disclosure direct to a fuel injection timing drift detection and/or compensation system. In some cases, the system collects or receives a series of fuel pressure data measured by one or more fuel pressure sensors. The system is configured to receive an indication of fuel flow cutout and a start-of-injection command signal. The system calculates a set of pressure drops using the series of fuel pressure data and identifies a selected pressure drop greater than a predetermined threshold to determine a measured start-of-injection timing based on the selected pressure drop. The system is further configured to evaluate whether a fuel injection drifting occurs based on received start-of-injection command signal and the measured start-of-injection timing. In some cases, the fuel injection drifting is used to either compensate fuel injection timing or raise a flag indicating the drifting.

公开(公告)号：US20240141846A1

公开(公告)日：2024-05-02

申请号：US18468965

申请日：2023-09-18

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Takehiro KOMATSU

IPC: F02D41/02 ,  B60W10/02 ,  B60W10/06 ,  B60W10/08 ,  B60W20/16 ,  F01N3/023 ,  F02D41/00 ,  F02D41/40 ,  F02P5/15 ,  F16H61/14

CPC classification number: F02D41/029 ,  B60W10/026 ,  B60W10/06 ,  B60W10/08 ,  B60W20/16 ,  F01N3/023 ,  F02D41/0002 ,  F02D41/401 ,  F02P5/1504 ,  F16H61/14 ,  B60W2510/0676 ,  F02D2200/021

Abstract: An engine having a throttle valve, a filter for collecting an exhaust particulate matter from the engine, and a control device are provided, and the control device includes an acquisition unit for acquiring a temperature of the engine, a regeneration control unit for increasing an opening degree of the throttle valve as the temperature increases, and executing a regeneration control of the filter by a fuel cut. A vehicle comprising: a retard amount control unit that increases a retard amount of an ignition timing at a time of returning from the fuel cut as the temperature increases.