公开(公告)号：US11578684B2

公开(公告)日：2023-02-14

申请号：US17450976

申请日：2021-10-14

Applicant: Transportation IP Holdings, LLC

Inventor： Adam Edgar Klingbeil

IPC: F02M26/43 ,  F02M25/022 ,  F02M25/10 ,  F02M26/05 ,  F02D41/00

Abstract: Systems and methods for controlling fuel factions delivered to different cylinders are provided. In one example, a controller is configured to, during a single engine cycle and responsive to a first condition, deliver a lower fraction of a first fuel into a donor cylinder in comparison to a fraction of the first fuel being injected into a non-donor cylinder and deliver a higher fraction of a second fuel into the donor cylinder in comparison to a fraction of the second fuel being injected into the non-donor cylinder.

公开(公告)号：US20220120206A1

公开(公告)日：2022-04-21

申请号：US17423748

申请日：2019-12-09

Applicant: Bayerische Motoren Werke Aktiengesellschaft

Inventor： Roman MESSING

IPC: F01N13/10 ,  F01N3/04 ,  F02D37/02 ,  F02D23/00 ,  F02D41/00 ,  F02M26/43

Abstract: An applied-ignition internal combustion engine includes first and second combustion chambers, an exhaust-gas system with an exhaust-gas purification system is disposed at the first and second combustion chambers, and an exhaust-gas manifold. An exhaust gas from a combustion of a fuel/air mixture firstly flows through the exhaust-gas manifold and subsequently flows through the exhaust-gas purification system. A first section of the exhaust-gas system from the first combustion chamber to the exhaust-gas purification system is cooled more than a second section of the exhaust-gas system from the second combustion chamber to the exhaust-gas purification system. The first combustion chamber is operated with a lean fuel/air mixture, the second combustion chamber is operated with a rich fuel/air mixture, and an overall exhaust-gas lambda value at an inlet into the exhaust-gas purification system is stoichiometric.

公开(公告)号：US11306687B2

公开(公告)日：2022-04-19

申请号：US17096928

申请日：2020-11-12

Applicant: KUBOTA Corporation

Inventor： Kentaro Nagai ,  Ryutaro Komura ,  Takashi Yamaguchi ,  Kumiko Sakaguchi ,  Takahiro Yamazaki

IPC: F02B47/08 ,  F02M26/05 ,  F02M26/43 ,  F01N13/10 ,  F02F1/24

Abstract: An engine exhaust manifold including exhaust inlet parts at four locations corresponding to a plurality of exhaust ports, one exhaust outlet part, and an exhaust confluence part to collect exhaust gas from each of the exhaust inlet parts and send to the exhaust outlet part. An EGR passage part to send EGR gas toward an intake passage is formed.

公开(公告)号：US11143090B2

公开(公告)日：2021-10-12

申请号：US15889662

申请日：2018-02-06

Applicant: Transportation IP Holdings, LLP

Inventor： Daniel Yerace ,  Adam Edgar Klingbeil ,  James Robert Mischler

IPC: F02B3/08 ,  F02D41/40 ,  F02D35/02 ,  F02D41/00 ,  F02D19/06 ,  F02D19/10 ,  F02D29/02 ,  F02D41/30 ,  F02M26/43 ,  F02M26/05 ,  F02M26/23

Abstract: Various methods and systems are provided for maintaining combustion stability in a multi-fuel engine. In one example, a system comprises a first fuel system to deliver liquid fuel to at least one cylinder of an engine, a second fuel system to deliver gaseous fuel to the at least one cylinder, and a controller. The controller is configured to supply the gaseous fuel to the at least one cylinder, inject the liquid fuel to the at least one cylinder thereby to ignite the liquid fuel and the gaseous fuel in the at least one cylinder via compression-ignition, and adjust an amount of the gaseous fuel relative to an amount of the liquid fuel based on a measured parameter associated with auto-ignition of end gases subsequent to the compression-ignition of the liquid fuel.

公开(公告)号：US20210231083A1

公开(公告)日：2021-07-29

申请号：US17227574

申请日：2021-04-12

Applicant: Cummins Inc.

Inventor： Anthony Kyle Perfetto ,  Samuel C. Geckler ,  Hongfeng H. Wang

IPC: F02M26/09 ,  F02M26/08 ,  F02M26/23 ,  F02M26/43 ,  F02B29/04 ,  F02B37/00

Abstract: Systems, apparatus, and methods are disclosed that include a divided exhaust engine with at least one pair of primary EGR cylinders and a plurality of pairs of non-primary EGR cylinders. The pair of primary EGR cylinders can be connected to an intake with an EGR system that lacks an EGR cooler. In another embodiment, the cylinder pairs include exhaust flow paths that join in the cylinder head to form a common exhaust outlet for each cylinder pair in the cylinder head that is connected directly to the EGR system or to the exhaust system without an exhaust manifold.

公开(公告)号：US11028792B2

公开(公告)日：2021-06-08

申请号：US16241443

申请日：2019-01-07

Applicant: Cummins Inc.

Inventor： Carlos Alcides Lana ,  David J. Stroh ,  Samuel C. Geckler ,  Marten H. Dane ,  Anthony Kyle Perfetto ,  Karthik Kappaganthu ,  Govindarajan Kothandaraman

IPC: F02D41/00 ,  F02D13/02 ,  F02M26/05 ,  F02M26/06 ,  F02M26/13 ,  F02M26/37 ,  F02M26/43 ,  F02B37/18 ,  F02B37/24 ,  F02P5/15 ,  F02D21/08

Abstract: Systems, apparatus, and methods are disclosed that include a divided exhaust engine with at least one primary EGR cylinder and a plurality of non-primary EGR cylinders. The systems, apparatus and methods control the amount of recirculated exhaust gas in a charge flow in response to EGR fraction deviation conditions.

公开(公告)号：US20210156342A1

公开(公告)日：2021-05-27

申请号：US16691661

申请日：2019-11-22

Applicant: Southwest Research Institute

Inventor： Shinhyuk Joo ,  Christopher James Chadwell

IPC: F02M26/08 ,  F02B37/00 ,  F02M26/43 ,  F02M26/52 ,  F02D41/00 ,  F02B9/02 ,  F02D41/14

Abstract: An internal combustion engine having two “banks” of cylinders, the “banks” being defined by cross-connection to different turbochargers. The exhaust from one bank of cylinders goes to a first turbocharger, and the exhaust from the other bank of cylinders goes to a second turbocharger. However, the compressed air delivered from the turbochargers is cross-connected to the cylinder banks. This allows a cylinder bank to be boosted with a turbocharger whose compressed air output does not necessarily match the exhaust energy of that cylinder bank.

公开(公告)号：US10914251B2

公开(公告)日：2021-02-09

申请号：US15853428

申请日：2017-12-22

Applicant: Ford Global Technologies, LLC

Inventor： Aed M. Dudar

IPC: F02D41/00 ,  F02B39/10 ,  F02M26/08 ,  F02M26/23 ,  F02M26/43 ,  F02M26/47 ,  F02M26/48 ,  F02M26/49 ,  F02D41/14 ,  F02D41/04

Abstract: Methods and systems are provided for diagnosing degradation of an exhaust gas recirculation (EGR) valve. In one example, a method may include, during a vehicle key-off condition, routing compressed air through an EGR passage housing the EGR valve, and indicating degradation of the EGR valve based on a change in an estimated EGR pressure, upon a commanded change in EGR valve position.

公开(公告)号：US20200158051A1

公开(公告)日：2020-05-21

申请号：US16676609

申请日：2019-11-07

Applicant: Tyler Tutton ,  William P. Attard ,  Michael Barkey

Inventor： Tyler Tutton ,  William P. Attard ,  Michael Barkey

IPC: F02M26/08 ,  F02D41/00 ,  F02D9/08 ,  F02M26/48 ,  F02M35/10 ,  F02B37/00 ,  F02B75/18 ,  F02B37/18 ,  F02M26/43 ,  F02M26/23

Abstract: Techniques for controlling a forced-induction engine having a low pressure exhaust gas recirculation (LPEGR) system comprise determining a desired differential pressure (dP) at an inlet of a boost device based on an engine mass air flow (MAF) and a speed of the engine, wherein the engine further comprises a dP valve disposed upstream from an EGR port and a throttle valve disposed downstream from the boost device, determining a desired EGR mass fraction based on at least the engine MAF and the engine speed, determining a maximum throttle inlet pressure (TIP) based on the engine speed, the desired EGR mass fraction, and a barometric pressure, and performing coordinated control of the dP valve and the throttle valve based on the desired dP and the maximum TIP, respectively, thereby extending EGR operability to additional engine speed/load regions and increasing engine efficiency.

公开(公告)号：US10458368B2

公开(公告)日：2019-10-29

申请号：US14721256

申请日：2015-05-26

Applicant: TENNECO GMBH

Inventor： Michael Fischer

IPC: F02B33/44 ,  F02M25/07 ,  F01N5/04 ,  F02M26/15 ,  F02M26/04 ,  F01N3/20 ,  F02M26/05 ,  F02M26/06 ,  F02M26/23 ,  F02M26/35 ,  F02M26/42 ,  F02M26/43

Abstract: An exhaust gas system for a gasoline engine with an exhaust gas pipe connectible to an outlet manifold, with an inlet pipe connectible to an inlet manifold, whereas a main exhaust catalyst is provided within the exhaust gas pipe wherein at least one first exhaust gas recirculation pipe is provided which branches off from the exhaust gas pipe and ends in the inlet pipe, whereas at least one particle filter is positioned within the first exhaust gas recirculation pipe and/or within the exhaust gas pipe upstream of the first exhaust gas recirculation pipe, wherein optionally at least a second exhaust gas recirculation pipe is provided, whereas at least one particle filter is provided which is positioned within the second exhaust gas recirculation pipe and/or which is positioned within the exhaust gas pipe upstream of the second exhaust gas recirculation pipe.