公开(公告)号：US20230258141A1

公开(公告)日：2023-08-17

申请号：US18167887

申请日：2023-02-13

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Atsushi FUKUDA ,  Eiichiroh KIDO ,  Masanao IDOGAWA

IPC: F02D41/06 ,  F02D41/40 ,  F02D41/34 ,  F02D41/04

CPC classification number: F02D41/065 ,  F02D41/401 ,  F02D41/345 ,  F02D41/042 ,  F02D2041/389

Abstract: A vehicle controller includes processing circuitry. The processing circuitry is configured to perform an intermittent stop of an engine in accordance with a traveling state of a vehicle, cause the engine to restart by self-sustaining resumption when restart of the engine is requested in a state in which the engine is rotating during the intermittent stop, and perform a retarded injection control that retards, in a combustion cycle of the engine, a starting time of a first fuel injection at the time of the restart of the engine by the self-sustaining resumption as compared to a starting time of a second fuel injection.

公开(公告)号：US11719173B2

公开(公告)日：2023-08-08

申请号：US17778761

申请日：2020-11-12

Applicant: Caterpillar Motoren GmbH & Co. KG

Inventor： Robert Graumueller

IPC: F02D19/02 ,  F02D41/00 ,  F02M21/02 ,  F02D41/40

CPC classification number: F02D19/022 ,  F02D41/0027 ,  F02M21/0245 ,  F02M21/0248 ,  F02D41/401

Abstract: The present invention relates to a method for operating an internal combustion engine provided as a medium-speed gas engine or dual fuel engine in a gas fuel mode. The method comprises the step of directly injecting a gas fuel into a combustion chamber of the engine at a maximum injection pressure that is lower than a compression-end pressure of the engine.

公开(公告)号：US20230243318A1

公开(公告)日：2023-08-03

申请号：US18163640

申请日：2023-02-02

Applicant: Stanadyne LLC

Inventor： Michael Hornby ,  Stephen Bugos ,  Michael Kaput ,  Srinu Gunturu

IPC: F02D41/40 ,  F02D41/38

CPC classification number: F02D41/402 ,  F02D41/3845 ,  F02D2200/0602 ,  F02D2200/021 ,  F02D2200/101 ,  F02D2200/0404 ,  F02D2250/31

Abstract: A port fuel injection system includes a fuel pump configured to produce a flow of pressurized liquid fuel at a pressure between 10 and 50 bar. A fuel rail is connected to receive the flow of pressurized liquid fuel from the fuel pump, the fuel rail. A plurality of fuel injectors, including one fuel injector positioned in the intake port of each engine cylinder upstream of the intake valve for the engine cylinder are connected to receive pressurized fuel from the fuel rail. An engine control unit (ECU) receives signals from sensors on the internal combustion engine and is programmed to actuate the fuel injectors to deliver fuel to each engine cylinder over a full range of engine operating conditions. A port fuel injection system with high pressure and fast acting fuel injectors improves fuel delivery and performance over the full range of engine operating conditions.

公开(公告)号：US11698010B2

公开(公告)日：2023-07-11

申请号：US17601071

申请日：2020-03-27

Applicant: VOLVO TRUCK CORPORATION

Inventor： Malin Ehleskog ,  Lennart Andersson

IPC: F01N3/10 ,  F02M26/05 ,  F02M26/16 ,  F02M26/34 ,  F02M26/38 ,  F02M26/42 ,  F02D9/04 ,  F02D41/00 ,  F02D41/02 ,  F02D41/40

CPC classification number: F01N3/103 ,  F02D9/04 ,  F02D41/0055 ,  F02D41/0082 ,  F02D41/025 ,  F02D41/405 ,  F02M26/05 ,  F02M26/16 ,  F02M26/34 ,  F02M26/38 ,  F02M26/42 ,  F01N2430/085

Abstract: Provided are a method and an ICE system, including an internal combustion engine including a first and a second set of cylinders. A first and a second EGR valve control flow of exhaust gas from the cylinders to an EGR conduit. A controller controls the closing of the second EGR valve, thereby preventing flow of exhaust gas from the second set of cylinders to the EGR conduit. The second EGR valve is upstream of a turbine. The controller is configured to activate a fuel injector for late post injection of fuel into the second set of cylinders when the second EGR valve is closed, so that at least a part of the fuel that exits the second set of cylinders is uncombusted. An exhaust gas aftertreatment system receives and treats exhaust gas which is not recirculated in the EGR conduit, and includes an oxidation catalyst for combustion.

公开(公告)号：US11686260B2

公开(公告)日：2023-06-27

申请号：US17599106

申请日：2020-03-16

Applicant: JAGUAR LAND ROVER LIMITED

Inventor： Craig Holroyd ,  Claudio Cascone

IPC: F02D13/02 ,  F02D41/00 ,  F02D41/40 ,  F02D41/10

CPC classification number: F02D13/0226 ,  F02D13/0223 ,  F02D13/0234 ,  F02D41/009 ,  F02D41/10 ,  F02D41/401 ,  F02D2041/001 ,  F02D2200/101 ,  F02D2200/1002 ,  F02D2250/12 ,  F02D2250/21

Abstract: A control system for controlling operation of an internal combustion engine is configured to: receive a first request signal indicative of first torque demand; determine a schedule defining an opening timing of the intake valve and a closing timing of the intake valve of a cylinder of the internal combustion engine in dependence on the first torque demand; and cause the intake valve to open in accordance with the schedule. The control system is also configured to, during a period in which the intake valve is open: receive a second torque request signal indicative of a second torque demand different to the first torque demand; determine an updated schedule defining an updated closing timing of the intake valve in dependence on the second torque demand; and cause the intake valve to close in accordance with the updated schedule.

公开(公告)号：US11686243B2

公开(公告)日：2023-06-27

申请号：US17864777

申请日：2022-07-14

Applicant: Mazda Motor Corporation

Inventor： Ryohei Ono ,  Yuji Harada ,  Kenji Uchida

IPC: F02B19/12 ,  F02D41/40 ,  F02P5/15

CPC classification number: F02B19/12 ,  F02D41/401 ,  F02P5/1502 ,  F02D2200/101

Abstract: An engine system is provided, which includes a cylinder block, a cylinder head, a piston, a main combustion chamber, a subchamber, an injector that injects fuel into the main combustion chamber, a main spark plug that ignites a mixture gas inside the main combustion chamber, a subspark plug that ignites the mixture gas inside the subchamber, and a control device. In a low-speed high-load range, a fuel injection timing is set in compression stroke and the main ignition and the subignition are performed after the fuel injection timing, and the fuel injection timing under a low-speed condition becomes later than that under a high-speed condition, and the ignition devices are controlled so that the subignition timing is retarded from the main ignition timing and an ignition phase difference that is the retard amount of the subignition timing becomes larger under the low-speed condition than under the high-speed condition.

公开(公告)号：US20230193846A1

公开(公告)日：2023-06-22

申请号：US18109587

申请日：2023-02-14

Applicant: Rolls-Royce Solutions GmbH

Inventor： Jörg Remele ,  Aron Toth ,  Tobias Frank

IPC: F02D41/40

CPC classification number: F02D41/401 ,  F02D2200/0602 ,  F02D2041/389

Abstract: A method for operating an internal combustion engine, the method including the steps of:



(a) actuating an injector to introduce a pre-injection amount of a fuel into a combustion chamber of the internal combustion engine;
(b) determining, for an operating cycle of the combustion chamber in which the injector was actuated in the step (a), a pressure gradient characteristic value which is characteristic of a combustion chamber pressure gradient in the combustion chamber;
(c) repeating the steps (a) and (b) a plurality of times;
(d) determining a skew of a distribution of a plurality of pressure gradient characteristic values determined in the step (c); and
(e) changing or maintaining an actuation of the injector depending on the skew determined in the step (d).

公开(公告)号：US11680505B2

公开(公告)日：2023-06-20

申请号：US17686247

申请日：2022-03-03

Applicant: Tula Technology, Inc.

Inventor： Shikui Kevin Chen ,  Matthew A. Younkins ,  Louis J. Serrano

IPC: F01N3/00 ,  F01N3/20 ,  F02D41/00 ,  F01N11/00 ,  F01N3/021 ,  F02D41/40 ,  F01N13/00 ,  F01N3/08

CPC classification number: F01N3/2033 ,  F01N3/021 ,  F01N3/0814 ,  F01N3/2066 ,  F01N11/005 ,  F01N13/009 ,  F02D41/0087 ,  F02D41/401 ,  F01N2430/08 ,  F01N2900/08 ,  F01N2900/1404 ,  F01N2900/1602 ,  F02D2041/0012 ,  F02D2200/0802 ,  F02D2200/0804 ,  Y02T10/12 ,  Y02T10/40

Abstract: A skip fire engine controller and method of control is described wherein during transitions from a first firing density to a second firing density, a firing density and a pumping density are separately set so as to balance the conflicting demands of (a) torque control, (b) Noise, Vibration and Harshness (NVH), (c) air flow through the engine and (d) air-fuel ratio.

公开(公告)号：US20230184191A1

公开(公告)日：2023-06-15

申请号：US17963136

申请日：2022-10-10

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Takahiro YOSHIDA ,  Takehiro KOMATSU

IPC: F02D41/40 ,  F02D41/06

CPC classification number: F02D41/402 ,  F02D41/065 ,  F02D2200/021 ,  F02D2200/1002 ,  F02D2250/31

Abstract: An internal combustion engine system includes an internal combustion engine including an in-cylinder injection valve and a fuel pressure adjustment mechanism, and a control device that executes fuel injection control at a time of automatic restart of the internal combustion engine that is automatically stopped, by controlling the in-cylinder injection valve and the fuel pressure adjustment mechanism, in which the control device includes a first controller that executes the compression stroke injection a first number of times after an automatic restart request is made and control the pressure of the fuel to a predetermined value, and a second controller that executes the intake stroke injection a second number of times after the compression stroke injection is executed the first number of times and make the pressure of the fuel lower than the predetermined value.

公开(公告)号：US11668218B2

公开(公告)日：2023-06-06

申请号：US17449641

申请日：2021-09-30

Applicant: Transportation IP Holdings, LLC

Inventor： Adam Edgar Klingbeil ,  Thomas Michael Lavertu

IPC: F02D41/40 ,  F02M26/35 ,  F01N3/20 ,  F02D13/02 ,  F02M26/47 ,  F02M26/32 ,  F01P3/14 ,  F02M35/10

CPC classification number: F01N3/2066 ,  F01P3/14 ,  F02D13/0249 ,  F02D41/401 ,  F02M26/32 ,  F02M26/35 ,  F02M26/47 ,  F02M35/10209 ,  F01N2610/02 ,  F01N2610/1453

Abstract: Methods and systems are provided for adjusting a location of a fuel injection in response to a substitution rate and a desired EGR flow. In one example, a method may include injecting a first fuel to a combustion chamber via a direct injector positioned to inject directly into the combustion chamber, injecting a second, different, fuel to the combustion chamber via an exhaust port injector positioned to inject toward an exhaust valve of the combustion chamber, and combusting the first and second fuels together in the combustion chamber.