公开(公告)号：US20190101047A1

公开(公告)日：2019-04-04

申请号：US16144006

申请日：2018-09-27

Applicant: IFP Energies nouvelles

Inventor： Didier AMBRAZAS ,  Sebastien CHARMASSON ,  Xavier GAUTROT ,  Christophe LECHARD ,  Julien TROST ,  Pierre VIOT

IPC: F02B23/10 ,  F02F1/24 ,  F02F1/18

Abstract: The present invention relates to an internal-combustion engine comprising at least two cylinders wherein a piston in connection with a combustion chamber moves. Said combustion chamber comprises a single intake valve (SA), a single exhaust valve (SE), a single fuel injector (ID), two spark plugs (Al) and means for creating a swumble flow in said chamber.

公开(公告)号：US20190093592A1

公开(公告)日：2019-03-28

申请号：US16087053

申请日：2016-11-25

Applicant: Mazda Motor Corporation

Inventor： Kota Matsumoto ,  Tomonori Urushihara ,  Atsushi Inoue ,  Yusuke Kawai ,  Toru Miyamoto ,  Yudai Koshiro

IPC: F02D41/40 ,  F02D41/00 ,  F02B1/08 ,  F02B23/10 ,  F02B23/06

Abstract: A combustion control device for a compression autoignition engine includes an engine, a state quantity setting device, a spark plug, a controller, and a sensor. The spark plug receives a control signal from the controller and ignites air-fuel mixture at predetermined ignition timing such that the ignited air-fuel mixture is combusted by flame propagation and then unburned air-fuel mixture in a combustion chamber is combusted by autoignition. The controller outputs a control signal to an injector such that, in a compression stroke, fuel is injected at specific timing at which a line obtained by extending an axis of each hole of the injector overlaps with a specific portion including an opening edge of a cavity in an upper surface of a piston.

公开(公告)号：US10202891B2

公开(公告)日：2019-02-12

申请号：US14418915

申请日：2013-09-19

Applicant: Mitsubishi Heavy Industries, Ltd.

Inventor： Yuji Oda ,  Kengo Tanaka ,  Akihiro Yuuki

IPC: F02B19/18 ,  F02B19/12 ,  F02D19/02 ,  F02B23/10

Abstract: An object is to provide a precombustion-chamber gas engine in which occurrence of knocking is restricted. The precombustion-chamber gas engine includes: a cylinder; a cylinder head; a piston delimiting a main combustion chamber with the cylinder head; a precombustion-chamber cap delimiting a precombustion chamber inside thereof and including a plurality of nozzle holes through which the precombustion chamber is in communication with the main combustion chamber; an intake valve for opening and closing an intake port that opens on the cylinder head; and an exhaust valve for opening and closing an exhaust port that opens on the cylinder head. In a planar view where the cylinder head is seen from below, there are at least one intake-side nozzle hole and at least one exhaust-side nozzle hole, and a total nozzle-hole area of the at least one intake-side nozzle hole is larger than that of the at least one exhaust-side nozzle hole.

公开(公告)号：US10094303B2

公开(公告)日：2018-10-09

申请号：US15287580

申请日：2016-10-06

Applicant: O. Paul Trentham

Inventor： O. Paul Trentham

IPC: F02B75/04 ,  F01L7/08 ,  F02D15/04 ,  F01L7/02 ,  F02B23/10 ,  F02B75/18 ,  F02F1/24 ,  F02F3/28

Abstract: A reciprocating engine includes an engine body presenting an internal chamber and a fluid intake that supplies intake fluid to the internal chamber. The engine also includes a piston that oscillates within the internal chamber during engine operation. The engine body includes a block and a head that form the internal chamber.

公开(公告)号：US09976491B2

公开(公告)日：2018-05-22

申请号：US14916638

申请日：2014-08-29

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Sachio Mori ,  Koshiro Kimura ,  Satoshi Tsuda

IPC: F02B31/00 ,  F02D9/02 ,  F02B23/10 ,  F02B31/08 ,  F01L3/06 ,  F02B31/06 ,  F02D41/00 ,  F02P13/00 ,  F01L13/00 ,  F01L1/053 ,  F01L9/04

CPC classification number: F02D9/02 ,  F01L3/06 ,  F01L13/0015 ,  F01L2001/0537 ,  F01L2009/0411 ,  F02B23/104 ,  F02B31/06 ,  F02B31/085 ,  F02B2023/106 ,  F02B2275/48 ,  F02D41/0002 ,  F02D2009/023 ,  F02D2041/001 ,  F02P13/00 ,  Y02T10/125 ,  Y02T10/146

Abstract: Provided is an internal combustion engine including a sparkplug disposed in the vicinity of the center portion of an upper wall surface of a combustion chamber. Tumble flow generated during lean burn operation is controlled such that the tumble flow shape changes according to the engine rotation speed between a first tumble shape (usual tumble shape) in which the flow direction of a gas around the sparkplug at the time of ignition is direction from an intake valve side toward an exhaust valve side in a latter half of a compression stroke, and a second tumble shape (ω tumble shape) in which the flow direction of the gas is reversed in the latter half of the compression stroke from the direction from the intake valve side toward the exhaust valve side to the direction from the exhaust valve side toward the intake valve side.

公开(公告)号：US09938927B2

公开(公告)日：2018-04-10

申请号：US15257778

申请日：2016-09-06

Applicant: Fuji Jukogyo Kabushiki Kaisha

Inventor： Koki Ando ,  Yuichi Katakura

IPC: F02F3/28 ,  F02F1/24 ,  F02B17/00 ,  F02B23/10

CPC classification number: F02F3/285 ,  F02B17/005 ,  F02B23/104 ,  F02B2023/103 ,  F02B2275/40 ,  F02F1/242 ,  Y02T10/12 ,  Y02T10/125

Abstract: A piston is used for an engine including: an ignition plug disposed in the vicinity of a central axis of a cylinder; intake and exhaust ports disposed at positions where the ignition plug is interposed therebetween; and an injector disposed at a position offset from the ignition plug toward the intake port to inject fuel sprays toward a crown surface of the piston. The piston includes: a recess formed by recessing the crown surface of the piston with respect to other portions of the crown surface, in which the recess includes a step on an outer peripheral edge over the entire circumference thereof with respect to the other portions, and a pair of lateral sides formed straightly so as to extend substantially in parallel to a straight line connecting the injector and the ignition plug when seen in a direction of the cylinder axis.

公开(公告)号：US09915231B2

公开(公告)日：2018-03-13

申请号：US14746496

申请日：2015-06-22

Applicant: Ford Global Technologies, LLC

Inventor： Douglas Raymond Martin ,  Kenneth James Miller

IPC: F02M27/06 ,  F02P23/04 ,  F02B23/10 ,  F02M31/18 ,  F02D41/04 ,  F02D41/06 ,  F02N19/04 ,  F02D13/02 ,  F02D19/08 ,  F02B75/12

CPC classification number: F02M27/06 ,  F02B23/104 ,  F02B2075/125 ,  F02D13/0207 ,  F02D13/0219 ,  F02D19/084 ,  F02D41/047 ,  F02D41/064 ,  F02D2200/0606 ,  F02D2250/02 ,  F02M31/18 ,  F02M31/183 ,  F02N19/04 ,  Y02T10/123 ,  Y02T10/125 ,  Y02T10/126 ,  Y02T10/36

Abstract: A method for vaporizing fuel is provided. The method comprises heating the fuel in a cylinder of an engine via radiation to vaporize the fuel without ignition. In this way, the fuel may be heated to increase vaporization efficiency prior to ignition.

公开(公告)号：US20180010510A1

公开(公告)日：2018-01-11

申请号：US15637757

申请日：2017-06-29

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Keisuke HAYASHI

IPC: F02B23/10 ,  F01N3/20 ,  F01N3/26 ,  F02P13/00

CPC classification number: F02B23/10 ,  F01N3/2006 ,  F01N3/26 ,  F02B2023/103 ,  F02D37/02 ,  F02P5/045 ,  F02P5/1502 ,  F02P9/002 ,  F02P13/00 ,  Y02T10/125

Abstract: An upper part of FIG. 7 represents a catalyst warming-up control when a normal fuel is used, and a lower part of FIG. 7 represents the catalyst warming-up control when a heavy fuel is used. As understood from a comparison between the upper part and the lower part of FIG. 7, the start timing of the ignition period and the total injection amount of the injector in each cycle when the heavy fuel is used are the same as those when the normal fuel is used, though the ratio of the intake stroke injection and the expansion stroke injection to the total injection amount of the injector is changed to increase the fuel amount of the expansion stroke injection as compared with the case where the normal fuel is used.

公开(公告)号：US09863350B2

公开(公告)日：2018-01-09

申请号：US14787739

申请日：2014-04-24

Applicant: Mazda Motor Corporation

Inventor： Yoshihisa Nakamoto ,  Kota Maekawa

IPC: F02D41/00 ,  F02D41/06 ,  F02B1/12 ,  F02D41/04 ,  F02D41/30 ,  F02N11/08 ,  F02N99/00 ,  F02B23/10 ,  F02N19/00 ,  F02D41/38

CPC classification number: F02D41/062 ,  F02B1/12 ,  F02B23/101 ,  F02D41/009 ,  F02D41/042 ,  F02D41/065 ,  F02D41/3035 ,  F02D2041/0095 ,  F02D2041/389 ,  F02N11/0814 ,  F02N19/005 ,  F02N99/006 ,  Y02T10/128 ,  Y02T10/48

Abstract: When a predetermined restart condition is satisfied after an engine is automatically stopped, whether or not a piston of a stopped-in-compression-stroke cylinder which is in a compression stroke falls within a specific range set at a bottom dead center side of a predetermined upper limit position is determined. When the piston of the stopped-in-compression-stroke cylinder falls within the specific range, a first compression start is executed in which fuel is injected from an injector into the stopped-in-compression-stroke cylinder for the first time and is then self-ignited. In the first compression start, a start timing of a first fuel injection operation with respect to the stopped-in-compression-stroke cylinder is set to be earlier as a stop position of the piston of the cylinder gets closer to the bottom dead center within the specific range.

公开(公告)号：US09851220B2

公开(公告)日：2017-12-26

申请号：US14441255

申请日：2013-11-07

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Osamu Hikiji ,  Stefan Born

IPC: G01M15/02 ,  G01D5/14 ,  F02M35/104 ,  F02D9/10 ,  F02B31/06 ,  G01D11/24 ,  F02B23/10

CPC classification number: G01D5/14 ,  F02B31/06 ,  F02B2023/106 ,  F02D9/105 ,  F02D9/1095 ,  F02M35/104 ,  G01D5/145 ,  G01D11/245 ,  Y02T10/146

Abstract: An assembly structure of a nonmagnetic member to which a position sensor arranged to to sense a rotation position of the rotation member, includes: a nonmagnetic member including a hollow portion; a cover which is fixed to an opening end portion of the hollow portion; and a retaining portion which is provided on an outer circumference portion of the hollow portion of the nonmagnetic member, and to which the position sensor is assembled from the opening end portion's side to be slid in a rotation axis direction, the cover restricting movements of the magnet holding portion and the position sensor in the rotation axis direction in a case where the cover is fixed to the nonmagnetic member in a state where the magnet holding portion and the position sensor are assembled to the nonmagnetic member.