公开(公告)号：US20180187582A1

公开(公告)日：2018-07-05

申请号：US15738436

申请日：2016-06-30

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroshi YAGUCHI ,  Takeshi FUKUI

IPC: F01M13/02 ,  B60T17/02 ,  B60T13/52

CPC classification number: F01M13/021 ,  B60T13/52 ,  B60T17/00 ,  B60T17/02 ,  F01M13/00 ,  F01M13/023 ,  F01M2013/0094 ,  F01M2013/026 ,  F01M2013/027 ,  F02B37/00 ,  F02D2200/0406 ,  F02D2200/60 ,  F02D2250/08 ,  F02D2250/41

Abstract: This blow-by gas recirculation device for an internal combustion engine is provided with a vacuum pump which supplies negative pressure to a brake booster and usable for recirculation of blow-by gas to an intake passage. This device includes: a PCV device for recirculating blow-by gas in a crankcase to the intake passage; a ventilation shortage region determination unit which determines whether or not an operational region of the engine is a PCV ventilation flow rate shortage region; and a brake negative pressure determination unit which determines whether or not the negative pressure of the brake booster is secured. The vacuum pump ventilates blow-by gas in the crankcase only when the determination units determines that the operational region is the PCV ventilation flow rate shortage region and that the negative pressure is secured. This reduces a contact risk of blow-by gas with engine oil, and inhibits the degradation of the oil.

公开(公告)号：US10006418B2

公开(公告)日：2018-06-26

申请号：US15258524

申请日：2016-09-07

Applicant: HYUNDAI KEFICO CORPORATION

Inventor： Hyung-Wook Kim ,  Young-Dae Min

IPC: F02M35/10 ,  F01M13/00 ,  F02M35/104 ,  F01M13/02

CPC classification number: F02M35/10222 ,  F01M13/0011 ,  F01M13/023 ,  F02M35/10026 ,  F02M35/10078 ,  F02M35/104

Abstract: Disclosed is an intake manifold for a vehicle with a unified flow path. The intake manifold has a plurality of branch pipes connected to intake ports of cylinders of an automotive engine, and a surge tank unit connected to the branch pipes and having an external air inlet formed at a side to receive external air, in which the surge tank unit has a unified gas inlet formed at the external air inlet so that blow-by gas an fuel evaporation gas both flows inside. Accordingly, flow resistance when external air flows inside is reduced and freezing at the blow-by gas inlet is prevented in winter. Therefore, the amount of air mixture to be supplied into the cylinders is increased, whereby the volume efficiency of the cylinders is improved and engine torque is increased.

公开(公告)号：US09945334B2

公开(公告)日：2018-04-17

申请号：US15156930

申请日：2016-05-17

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Baocheng Sun ,  Li Li ,  Dallis Sun ,  Bin Yin ,  Xihu Xu

IPC: F02M35/10 ,  F01M13/02 ,  F02M35/104 ,  F02M25/06

CPC classification number: F02M35/10222 ,  F01M13/023 ,  F02M25/06 ,  F02M35/104 ,  Y02T10/121

Abstract: An engine assembly is provided with an intake manifold having a manifold body downstream of a fresh air intake port. The manifold body has a wall defining first and second apertures spaced apart from one another. A positive crankcase ventilation (PCV) device is provided with a PCV pipe having a first end in fluid communication with a crankcase and a second end connected to first and second PCV branches. The first and second PCV branches are in fluid communication with the first and second apertures. A method is provided and directs a first portion of gases from the crankcase to the first aperture via the PCV pipe and the first PCV branch, and directs a second portion of gases from the crankcase to the second aperture via the PCV pipe and the second PCV branch.

公开(公告)号：US09885265B2

公开(公告)日：2018-02-06

申请号：US14321270

申请日：2014-07-01

Applicant: CUMMINS FILTRATION IP, INC.

Inventor： Brian W. Schwandt ,  Scott P. Heckel ,  Saru Dawar ,  Chirag D. Parikh ,  Christopher E. Holm ,  Peter K. Herman ,  Gregory W. Hoverson ,  Rohit Sharma ,  Benoit Le Roux ,  Jean-Luc Guichaoua ,  Shiming Feng ,  Gerard Malgorn ,  Arun Janakiraman ,  Jerald J. Moy ,  Himani Deshpande ,  Barry M. Verdegan ,  Howard E. Tews ,  Roger L. Zoch

IPC: F02B25/06 ,  F01M13/04 ,  F01M13/02 ,  F01M13/00

CPC classification number: F01M13/04 ,  F01M13/022 ,  F01M13/023 ,  F01M2013/0072 ,  F01M2013/0422 ,  F01M2013/0438

Abstract: An internal combustion engine crankcase ventilation rotating coalescer includes an annual rotating coalescing filter element, an inlet port supplying blow by gas from the crankcase to the hollow interior of the annular rotating coalescing filter element, and an outlet port delivering clean separated, air from the exterior of the rotating element. The direction of flow by gas inside-out, radially, outwardly from the hollow interior to the exterior.

公开(公告)号：US20180010497A1

公开(公告)日：2018-01-11

申请号：US15203097

申请日：2016-07-06

Applicant: Ford Global Technologies, LLC

Inventor： Rishi DWIVEDI ,  Katherine Jane BREWER

IPC: F01M13/04 ,  F01M13/00

CPC classification number: F01M13/0405 ,  F01M13/0011 ,  F01M13/022 ,  F01M13/023 ,  F01M2013/0038 ,  F01M2013/0083

Abstract: A positive crankcase ventilation valve for an engine is provided with a valve body defining apertures fluidly coupling a crankcase and an intake manifold of the engine, with each aperture sized to prevent an entrained oil droplet from flowing therethrough. The valve has a valve element supported by the body to selectively cover at least one of the apertures in response to a pressure difference between the manifold and the crankcase to provide variable air flow from the crankcase to the intake manifold. A method includes, in response to an increasing absolute pressure difference between the manifold and the crankcase, passively moving a valve element to selectively cover apertures fluidly coupling the crankcase and the manifold to control an air flow from the crankcase to the intake manifold to a predetermined variable flow profile, and separating oil droplets from the air flow via the apertures.

公开(公告)号：US09816410B2

公开(公告)日：2017-11-14

申请号：US13116606

申请日：2011-05-26

Applicant: Enrico Torella

Inventor： Enrico Torella

IPC: F02B25/06 ,  F01M13/04 ,  F01M13/02 ,  F01M13/00

CPC classification number: F01M13/04 ,  F01M13/022 ,  F01M13/023 ,  F01M2013/0044 ,  F01M2013/005 ,  F01M2013/045 ,  F01M2013/0461 ,  F01M2013/0488 ,  F01M2013/0494

Abstract: A separator device for a system for recirculation of the blow-by gases of an internal combustion engine includes a casing containing a separation chamber and having an inlet for communication with the engine crankcase and an outlet for communication with the engine intake manifold, and drainage outlets ending in the engine crankcase, for returning the liquid separated in the separation chamber into the engine crankcase. Actuator means sensitive to pressure in the engine crankcase are associated to the inlet and to the drainage outlets so that when the pressure in the engine crankcase is higher than the pressure in the separator device, the inlet is open and the drainage outlets are closed, while when the pressure in the engine crankcase is lower than the pressure in the separator device, the inlet is closed and the drainage outlets are open.

公开(公告)号：US20170314432A1

公开(公告)日：2017-11-02

申请号：US15144144

申请日：2016-05-02

Applicant: Ford Global Technologies, LLC

Inventor： Rishi Dwivedi ,  Todd Kappauf

IPC: F01M13/02 ,  F02M25/06 ,  F01M13/00 ,  F02B33/00 ,  F02M35/10

CPC classification number: F01M13/028 ,  F01M13/0011 ,  F01M13/023 ,  F02B33/00 ,  F02M25/06 ,  F02M35/10157 ,  F02M35/10222 ,  Y02T10/121 ,  Y02T10/144

Abstract: Positive crankcase ventilation (PCV) systems have been employed on naturally-aspirated engines for over half a century. The gases in the crankcase exit the engine into the engine intake due to the slightly elevated pressure in the crankcase. Flow is controlled via a PCV valve in a PCV duct. In pressure-charged engines, PCV flow stops when pressure in the intake exceeds that of the crankcase. Such stagnation leads to sludging and deposit formation. According to an embodiment of the disclosure, reverse flow through the system is allowed by installing a second PCV valve in parallel with the normally-provided PCV valve, with the second PCV valve allowing an opposite direction of flow. Oil separators are provided on both PCV ducts to and from the engine to remove oil from blowby gases for flow in either direction.

公开(公告)号：US09664078B2

公开(公告)日：2017-05-30

申请号：US14338991

申请日：2014-07-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Marie-Christine G. Jones ,  John Mark Lorentz

IPC: F01M13/00 ,  F02D41/22 ,  F02M25/06 ,  F02D41/00

CPC classification number: F01M13/00 ,  F01M13/022 ,  F01M13/023 ,  F01M2013/0044 ,  F01M2013/0083 ,  F02D41/0025 ,  F02D41/22 ,  F02M25/06 ,  Y02T10/40

Abstract: A Positive Crankcase Ventilation (PCV) channel disconnect detection device and method is provided for an engine having a crankcase, an intake system for delivering metered air to the engine, and a PCV channel for containing PCV gas flow between the crankcase and the intake system and having a first end and a second end. The PCV channel disconnect detection device includes a detection channel that supplies unmetered air surrounding one of the ends of the PCV channel to a post-throttle portion of the intake system. The detection channel is inoperable in response to a vacuum in the post-throttle portion of the intake system if the PCV channel connection is connected. The detection channel is operable in response to the vacuum in the post-throttle portion of the intake system if the PCV channel is disconnected. The detection channels may be configured to bypass all flow restrictions in the PCV system.

公开(公告)号：US09598990B2

公开(公告)日：2017-03-21

申请号：US13770522

申请日：2013-02-19

Applicant: Yukihiro Doko ,  Jun Ikeda

Inventor： Yukihiro Doko ,  Jun Ikeda

IPC: F01M13/02 ,  F02M25/06 ,  F04D9/06

CPC classification number: F01M13/023 ,  F01M2013/026 ,  F02M25/06 ,  F04D9/06 ,  Y02T10/121

Abstract: An ejector includes: a decompression chamber in an outer pipe on an air entrance side; a throat in the outer pipe on an air exit side; a nozzle in the outer pipe on the air entrance side, the nozzle having a leading end portion placed in a decompression chamber to inject air; and a suction port in the decompression chamber to suck blow-by gas into the decompression chamber. The air injected from the nozzle generates negative pressure in the decompression chamber to suck in blow-by gas through the suction port, and the sucked gas is discharged together with air through a throat. The valve in the nozzle includes a valve seat, a valve element, and a spring to press the valve element in a direction to separate from the valve seat. The valve element is formed with a bottom-closed cavity opening toward an upstream side of an air flow.

公开(公告)号：US09556766B2

公开(公告)日：2017-01-31

申请号：US14404811

申请日：2013-05-28

Applicant: Continental Automotive GmbH

Inventor： Thomas Burkhardt ,  Sebastian Viehoever ,  Andreas Hofmann ,  Harsha Mahaveera ,  Jan-Richard Lenk

IPC: F01M13/02 ,  F02D41/22 ,  F01M11/10 ,  F02D41/08 ,  F02D41/18 ,  F01M13/00

CPC classification number: F01M13/023 ,  F01M11/10 ,  F01M2013/0094 ,  F02D41/08 ,  F02D41/18 ,  F02D41/22 ,  F02D41/221 ,  F02D2200/0402 ,  F02D2200/0406 ,  Y02T10/40

Abstract: An internal combustion engine has a crankcase and a crankcase ventilation system having a switchable shut-off valve, and sensors that detect different operating parameters of the engine, including a load variable of the engine. An estimated load parameter is determined based on the different detected operating parameters using a dynamic model, and a corrective value of a characteristic value is determined as a function of a deviation between the estimated load variable and the detected load variable. To implement a diagnosis, diagnosis switching cycle(s) are controlled, in which the shut-off valve is set to a closed switched position for a first time and set to an open switched position for a second time. A diagnosis value representative of a shut-off valve being in a correct or incorrect state is determined based on a change to the corrective value in response to the one or the plurality of diagnosis switching cycles.

Abstract translation: 内燃机具有曲轴箱和具有可切换截止阀的曲轴箱通风系统，以及检测发动机的不同运行参数的传感器，包括发动机的负载变量。 基于使用动态模型的不同的检测到的操作参数来确定估计的负载参数，并且根据估计的负载变量和检测到的负载变量之间的偏差确定特征值的校正值。 为了实施诊断，控制诊断切换循环，其中截止阀首次被设置为闭合切换位置并且被设置为打开的切换位置第二次。 基于响应于一个或多个诊断切换循环对校正值的改变来确定表示处于正确或不正确状态的截止阀的诊断值。