公开(公告)号：US20240141850A1

公开(公告)日：2024-05-02

申请号：US18050330

申请日：2022-10-27

Applicant: ARAMCO SERVICES COMPANY

Inventor： Xin Yu ,  Anqi Zhang ,  Yu Zhang ,  Andrew Baur ,  David Cleary

IPC: F02D41/30 ,  F02D41/00 ,  F02D41/14 ,  F02P5/15

CPC classification number: F02D41/3064 ,  F02D41/0057 ,  F02D41/1475 ,  F02P5/1504 ,  F02D2200/101

Abstract: A method of operating an engine includes operating the engine in first and second engine operating map regions by performing passive jet ignition combustion with a first stoichiometric fuel mixture and a first volume of residual gas. The engine is operated in a third engine operating map region by performing turbulent jet controlled compression ignition (TJCCI) with an ultra lean fuel mixture and a first volume of cooled exhaust gas recirculation, a fourth engine operating map region by performing passive jet ignition combustion with a third stoichiometric fuel mixture and a second volume of cooled exhaust gas recirculation, and a fifth engine operating map region, characterized by shutting off the engine. The engine is operated in a mode transition region between the second, third, and fourth engine operating map regions by performing passive jet ignition combustion with a second stoichiometric fuel mixture and a second volume of residual gas.

公开(公告)号：US11939927B2

公开(公告)日：2024-03-26

申请号：US17750324

申请日：2022-06-26

Applicant: Stephen Karpaty ,  Istvan Karpaty

Inventor： Stephen Karpaty ,  Istvan Karpaty

IPC: F02D21/02 ,  F02D41/14 ,  F02M25/10

CPC classification number: F02D21/02 ,  F02D41/1454 ,  F02D41/1475 ,  F02M25/10 ,  F02D2200/101

Abstract: The solution of the invention is an internal combustion engine with oxygen concentrating equipment (80) wherein the air taken in the cylinder space (15) during the intake stroke and pushed out by the piston (5) during the charging stroke charges one or more cells (41A-41Z, 51A-51Z) of the oxygen concentrating equipment (80) and after separating most of the nitrogen in the cells (41A-41Z, 51A-51Z), the oxygen rich air is injected into the cylinder space (15) through a compressor (33) at the beginning of the expansion stroke by an injector (11). The fuel is also introduced into the cylinder space (15) at the beginning of the expansion stroke by a fuel injector (19). The ignition may be spark ignition, self-ignition or their combination.

公开(公告)号：US11746720B2

公开(公告)日：2023-09-05

申请号：US17825890

申请日：2022-05-26

Applicant: Robert Bosch GmbH

Inventor： Magnus Labbe ,  Bernd Kraewer ,  Thomas Kuhn

IPC: F02D41/14 ,  F02D41/00 ,  F02D29/06 ,  F02D41/02

CPC classification number: F02D41/1475 ,  F02D29/06 ,  F02D41/0002 ,  F02D41/029 ,  F02D2200/025 ,  F02D2200/0802

Abstract: A method (100) is proposed for operating an internal combustion engine (210), which comprises a lean-burn engine having compression-ignition, having a throttle valve (213) in an air path (212) upstream of the internal combustion engine (210) and an exhaust gas posttreatment system (202) downstream of the internal combustion engine (210), comprising a control of the internal combustion engine (210) according to a present load demand (130) using metering of an amount of fuel in dependence on the present load demand; and if a load demand (130) is absent in a heating operating mode, further comprising partially closing (140) the throttle valve (213) and defining a minimum value for the amount of fuel, which is greater than zero. Furthermore, a computing unit and a computer program for carrying out such a method (100) are proposed.

公开(公告)号：US11649778B2

公开(公告)日：2023-05-16

申请号：US17274367

申请日：2019-08-13

Applicant: Keyou GmbH

Inventor： Franz Werner Prümm ,  Daniel Thomas Koch

IPC: F02D41/14 ,  F02D41/18 ,  F02D41/26 ,  F02P5/15

CPC classification number: F02D41/1475 ,  F02D41/18 ,  F02D41/26 ,  F02P5/1502 ,  F02D2200/04 ,  F02D2200/101

Abstract: The invention relates to a method for operating an internal combustion engine comprising: determining a first set point value of a volume of air to be taken into the combustion chamber of the internal combustion engine within one working cycle thereof by retrieving the first set point value from a first characteristic map stored in a memory device of an electronic computing device as a function of a current engine speed of the internal combustion engine and as a function of a torque to be provided by the internal combustion engine; and determining a second set point value by retrieving the second set point value from a second characteristic map stored in the memory device of the electronic computing device as a function of a current engine speed of the internal combustion engine and as a function of a current volume of air supplied to the combustion chamber.

公开(公告)号：US11643989B2

公开(公告)日：2023-05-09

申请号：US17497984

申请日：2021-10-11

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hitoki Sugimoto

IPC: F02D41/00 ,  F02D41/14 ,  F02D41/38 ,  G01M15/11

CPC classification number: F02D41/0087 ,  F02D41/1475 ,  F02D41/1498 ,  F02D41/38 ,  G01M15/11 ,  F02D2200/1015

Abstract: A determination device for an internal combustion engine executes a partial fuel cut-off process. The determination device determines that exhaust gas characteristics have deteriorated when the misfire rate of the internal combustion engine is greater than or equal to a determination threshold. The determination device sets the determination threshold to a first determination threshold when the calculated misfire rate is a misfire rate in a period of non-execution of the partial fuel cut-off process. Also, the determination device sets the determination threshold to a second determination threshold, which is less than the first determination threshold, when the calculated misfire rate is a misfire rate in a period of execution of the partial fuel cut-off process.

公开(公告)号：US20190093580A1

公开(公告)日：2019-03-28

申请号：US16132916

申请日：2018-09-17

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yuki Nose ,  Yoshiyuki Shogenji ,  Eiji Ikuta ,  Misako Ban ,  Keiichi Myojo

IPC: F02D41/02 ,  F02D41/14

CPC classification number: F02D41/0295 ,  F01N3/101 ,  F01N11/007 ,  F02D41/0072 ,  F02D41/023 ,  F02D41/024 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/1475 ,  F02D41/30 ,  F02D43/00

Abstract: A controller is configured to execute a dither control process of operating fuel injection valves such that at least one of cylinders is a lean combustion cylinder, in which the air-fuel ratio is leaner than the stoichiometric air-fuel ratio, and at least another one of the cylinders is a rich combustion cylinder, in which the air-fuel ratio is richer than the stoichiometric air-fuel ratio, and a limiting process of limiting the dither control process such that the difference in the air-fuel ratio between the cylinders is smaller in a change period, in which a gear ratio of the multi-speed transmission is changed, than in periods except for the change period.

公开(公告)号：US10077744B2

公开(公告)日：2018-09-18

申请号：US15105814

申请日：2013-12-20

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yoshito Nogi

IPC: F02B33/44 ,  F02M25/06 ,  F01N5/04 ,  F02M26/04 ,  F02D21/08 ,  F02D41/00 ,  F02D41/02 ,  F02D41/14 ,  F01N3/08 ,  F02M26/05 ,  F02M26/06 ,  F02M26/15 ,  F02M26/50 ,  F02M26/52 ,  F02B37/12 ,  F02B47/08 ,  F01N13/00 ,  F02M26/24

CPC classification number: F02M26/04 ,  F01N3/0842 ,  F01N3/0871 ,  F01N13/009 ,  F01N2610/03 ,  F01N2900/0422 ,  F01N2900/1602 ,  F01N2900/1614 ,  F02B37/12 ,  F02B47/08 ,  F02D21/08 ,  F02D41/0007 ,  F02D41/0055 ,  F02D41/0065 ,  F02D41/0275 ,  F02D41/1475 ,  F02D2041/0017 ,  F02D2200/0406 ,  F02D2200/0812 ,  F02M26/05 ,  F02M26/06 ,  F02M26/15 ,  F02M26/24 ,  F02M26/50 ,  F02M26/52 ,  Y02T10/144 ,  Y02T10/42 ,  Y02T10/47

Abstract: A rich control for temporarily declining an air-fuel ratio of exhaust gas discharged from an engine combustion chamber is performed by an additional fuel being injected into a cylinder in an expansion stroke or an exhaust stroke in a state where a throttle opening degree is switched from a base throttle opening degree to a throttle opening degree for the rich control and an EGR rate is switched from a base EGR rate to an EGR rate for the rich control. The rich control is initiated by switching a low pressure side EGR control valve opening degree (VEGRL) to a low pressure side EGR control valve opening degree for the rich control (VEGRLR), then switching a high pressure side EGR control valve opening degree (VEGRH) to a high pressure side EGR control valve opening degree for the rich control (VEGRHR), then controlling the throttle opening degree (VTH), and then initiating the injection of the additional fuel (Qa).

公开(公告)号：US20180213718A1

公开(公告)日：2018-08-02

申请号：US15825218

申请日：2017-11-29

Applicant: Kubota Corporation

Inventor： Noriyasu Honjo

IPC: A01D34/00 ,  F02D31/00 ,  A01D34/64 ,  A01D34/68 ,  G05D1/00 ,  B62D49/06

CPC classification number: A01D34/008 ,  A01D34/64 ,  A01D34/6818 ,  A01D2101/00 ,  B60W2550/10 ,  B60W2550/145 ,  B60Y2200/223 ,  B62D49/0671 ,  F02D31/007 ,  F02D31/009 ,  F02D41/123 ,  F02D41/1475 ,  F02D41/2422 ,  F02D2200/501 ,  G05D1/0088

Abstract: A traveling control section of a traveling vehicle is configured to effect a normal operation to control an output of an engine when a vehicle speed is below a set vehicle speed, such that the engine output may correspond to an operation amount of an accelerator operating tool and to effect an output suppressing operation when the vehicle speed is equals to or more than the set vehicle speed, such that the vehicle speed may stay below the set vehicle speed, irrespectively of the operation amount of the accelerator operating tool. A fuel ratio in an air-fuel ratio in the output suppressing operation is set smaller than a fuel ratio in an air-fuel ratio in the normal operation.

公开(公告)号：US20180094616A1

公开(公告)日：2018-04-05

申请号：US15673418

申请日：2017-08-10

Applicant: HONDA MOTOR CO., LTD.

Inventor： Masanobu TAKAZAWA ,  Hiroshi HANABUSA ,  Haruya KITANO

IPC: F02P5/152 ,  F02P5/153 ,  F01L1/34 ,  F02D41/00 ,  F02D41/14

CPC classification number: F02P5/152 ,  F01L1/34 ,  F02D35/02 ,  F02D41/0047 ,  F02D41/0072 ,  F02D41/1475 ,  F02D2041/1433 ,  F02D2200/0411 ,  F02P5/1521 ,  F02P5/153

Abstract: A control device for an internal combustion engine includes an air-fuel ratio controller to execute a stoichiometric operation in which an air-fuel ratio of an air-fuel mixture in a combustion chamber of the internal combustion engine is set to a stoichiometric air-fuel ratio and a lean operation in which the air-fuel ratio is set to an air-fuel ratio leaner than the stoichiometric air-fuel ratio. A ignition timing controller is to calculate at least one ignition timing control parameter based on a laminar combustion velocity and to control an ignition plug provided in the combustion chamber to ignite based on the at least one ignition timing control parameter in a transitional state between the stoichiometric operation and the lean operation.

公开(公告)号：US20180023505A1

公开(公告)日：2018-01-25

申请号：US15377533

申请日：2016-12-13

Applicant: Hyundai Motor Company ,  Seoul National University R&DB Foundation

Inventor： Kyoungchan HAN ,  Jun Yu ,  Kyoung Min Lee ,  Kyoungdoug Min ,  Seungha Lee ,  Youngbok Lee

IPC: F02D41/40 ,  F02D41/14

CPC classification number: F02D41/403 ,  F02D35/024 ,  F02D35/028 ,  F02D41/1475 ,  F02D2200/0414 ,  F02D2200/0616 ,  F02D2250/32 ,  F02D2700/0282 ,  Y02T10/44

Abstract: A method of predicting a cylinder pressure of a diesel engine by a pressure predicting device may include predicting a pilot injection combustion pressure by pilot injection; predicting main combustion duration of main injection; and predicting a main injection combustion pressure after the main injection by using the pilot injection combustion pressure and the main combustion duration.