公开(公告)号：US20210079818A1

公开(公告)日：2021-03-18

申请号：US16963688

申请日：2018-02-05

Applicant: VOLVO TRUCK CORPORATION

Inventor： Arne ANDERSSON ,  Bengt LASSESSON

IPC: F01L9/02 ,  F01M1/08 ,  F01M11/02 ,  F02D13/02

Abstract: The present invention relates to a method for controlling lubrication of a connecting rod bearing of an internal combustion engine arrangement. The method comprises the steps of controlling an inlet valve to be maintained in the closed position during a movement of the reciprocating piston from the top dead center during an intake stroke for a predetermined number of crank angle degrees; and positioning the inlet valve in the open position when the reciprocating piston has traveled the predetermined number of crank angle degrees from the top dead center, wherein lubricating medium is provided to the connecting rod bearing within a predetermined time period before the inlet valve is arranged in the open position.

公开(公告)号：US20200291818A1

公开(公告)日：2020-09-17

申请号：US16353331

申请日：2019-03-14

Applicant: United Technologies Corporation

Inventor： Todd A. Davis ,  Gianna E. Sabino

IPC: F01D25/20 ,  F02C7/06 ,  F01M1/08 ,  F01M11/02

Abstract: A rotating structure provides a first annular array of first radial scoops and a second annular array of second radial scoops arranged axially with respect to the first annular array of first radial scoops. A first component is arranged in an axially forward direction relative to the first annular array of first radial scoops. A second component is arranged in an axially aft direction relative to the second annular array of second radial scoops. A lubrication system includes at least one nozzle aimed at the first and second annular arrays of first and second radial scoops. A first lubrication delivery path fluidly connects the first annular array of first radial scoops to the first component along the axially forward direction. A second lubrication delivery path fluidly connects the second annular array of second radial scoops to the second component along the axially aft direction.

公开(公告)号：US10677245B2

公开(公告)日：2020-06-09

申请号：US15547958

申请日：2016-01-27

Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

Inventor： Atsushi Naganuma

IPC: F04C14/22 ,  F01M1/16 ,  F01M1/02 ,  F04C2/344 ,  F04C13/00 ,  F04C15/00 ,  F01M1/08

Abstract: A variable displacement pump includes: a pump constituting section; a movable member; a first control hydraulic chamber; a second control hydraulic chamber; a control mechanism arranged to be actuated by receiving a control hydraulic pressure which is the discharge pressure on a downstream side of the discharge portion, through a single control passage formed within the engine, and to control a supply and a discharge of the discharge pressure with respect to the second control hydraulic chamber; and a switching mechanism arranged to switch a connection and a disconnection between the control passage and the control mechanism.

公开(公告)号：US20190353057A1

公开(公告)日：2019-11-21

申请号：US16479354

申请日：2018-01-19

Applicant: DOOSAN INFRACORE CO., LTD.

Inventor： Jong-young KIM

IPC: F01L1/14 ,  F01M1/08 ,  F01M9/10 ,  F01P3/08

Abstract: An adapter for a roller tappet of an engine may include a body and a support. The body may be combined with a cylinder block of the engine. The body may include oil inlet connected to main gallery of the cylinder block to receive an oil from the main gallery. The support may be extended from one end of the body to support the roller tappet. The support may include a first oil passageway connected to the oil inlet. The first oil passageway is formed through the body and the support to supply the oil supplied from the oil inlet to the roller tappet. Thus, the oil may be supplied from the main gallery to the roller tappet through the oil passageway so that it may not be required to form an additional oil passageway, which may supply the oil to the roller tappet, in the cylinder block.

公开(公告)号：US10451175B2

公开(公告)日：2019-10-22

申请号：US15304094

申请日：2015-04-17

Applicant: BorgWarner Inc.

Inventor： Kunihiko Mishima

IPC: F16H57/05 ,  F01M1/06 ,  F01M1/08 ,  F01M9/10 ,  F16H7/08 ,  F16H57/04 ,  F16H7/18 ,  F01L1/02 ,  F01L1/46 ,  F16H7/10 ,  F02B67/06

Abstract: The problem to be solved by the present invention lies in making it possible to reduce costs and to reduce the size of an oil pump, without impeding the degree of freedom in chain layout. An oil jet 1 is constructed in order to supply lubricating oil to a tension-side span of a chain C while also causing a tensioning force to act on a slack-side span of the chain C. The oil jet arm 1 is provided with a pivoting-side part 2A, and a tip-end side part 2B which is provided in such a way as to be pivotable about the pivoting-side part 2A and is acted on by a pressing force from a piston 41 of a hydraulic tensioner 4, and an oil ejection hole 22a for ejecting to the outside oil supplied from an oil discharge hole 41a in the piston 41 is formed in the tip-end side part 2B. Oil ejected from the oil ejection hole 22a is supplied to a portion E on the meshing start side with a sprocket 100 on the tension-side span of the chain C.

公开(公告)号：US10309290B2

公开(公告)日：2019-06-04

申请号：US15480666

申请日：2017-04-06

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Akira Yamashita

IPC: F01M1/08 ,  F01P3/08 ,  F01P3/10 ,  F01P5/10 ,  F01P5/12 ,  F01P7/14 ,  F02F3/00 ,  F02F3/22

Abstract: A cooling cavity is provided inside a piston of an internal combustion engine. Inlet/outlet holes of the cooling cavity are provided in a bottom surface of the piston. A first oil jet that sprays oil toward the inlet/outlet hole, a second oil jet that sprays oil toward a part different from the inlet/outlet hole are included. The first oil jet is caused to spray oil in preference to the second oil jet.

公开(公告)号：US10180090B2

公开(公告)日：2019-01-15

申请号：US14777597

申请日：2013-12-12

Applicant: YANMAR CO., LTD.

Inventor： Toru Nakazono ,  Khandoker Abu Raihan ,  Hiroyuki Okada

IPC: F01M5/00 ,  F01M1/08 ,  F01P7/16 ,  F01P11/08

Abstract: An internal combustion engine, which can improve an annual energy consumption efficiency, is provided. A gas engine 1 includes: an oil cooler 11 having a passage via which heat is exchanged between engine cooling water and lubricating oil; and a control unit 12 configured to control a temperature of the engine cooling water to a constant temperature so as to cool the lubricating oil during high load operation and to heat the lubricating oil during low to medium load operation. The control unit 12 increases the temperature of the engine cooling water during low to medium load operation compared with the temperature of the engine cooling water during high load operation. An oil jet 18a, which is configured to inject the lubricating oil into a rear surface of a piston 17, is provided.

公开(公告)号：US20180306096A1

公开(公告)日：2018-10-25

申请号：US15569910

申请日：2016-03-29

Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

Inventor： Keitarou SHISHIDO

IPC: F01P3/08 ,  F01M1/08

CPC classification number: F01P3/08 ,  B05B1/02 ,  F01M1/08 ,  F01P2003/006

Abstract: An oil jet (23) has an injection nozzle (32) that injects engine oil supplied from an oil supply passage of the internal combustion engine toward a piston. The injection nozzle (32) has a first pipe (36) having a supply port (35) communicating with an oil supply passage side and a second pipe (38) having an injection orifice (37) that injects the engine oil. The first pipe (36) and second pipe (38) are joined together with their axes forming a predetermined angle. The injection orifice (37) is formed such that a cross section of the injection orifice (37) is greater than a minimum radial direction cross section of the first pipe (36).

公开(公告)号：US10087881B2

公开(公告)日：2018-10-02

申请号：US14928033

申请日：2015-10-30

Applicant: Federal-Mogul Corporation

Inventor： Andrew J. Miller ,  Bruce Inwood ,  Marc Brandt

IPC: F01P3/06 ,  F02F3/28 ,  F02F3/00 ,  F02F3/22 ,  F02F3/20 ,  F01M1/08 ,  F01P3/08

Abstract: A ferrous piston for gasoline powered engines having dimensions which achieve reduced mass and improved performance is provided. The piston crown has a thickness of less than 4 mm and includes valve pockets with an axial clearance between the valve pockets and an uppermost ring groove of less than 1.5 mm. The pin bosses have an axial thickness of less than 3.7% of a bore diameter, which is the largest outer diameter of the piston, measured between a pin bore and the crown at 1 mm from an inner face forming the pin bore. Each pin boss has a radial thickness of less than 3% of the bore diameter measured between the pin bore and a lower end of the pin boss. An undercrown surface presents a projected area of less than 45% of a total piston bore area, wherein the total piston bore area is πBD2/4, BD being the bore diameter.

公开(公告)号：US20180163585A1

公开(公告)日：2018-06-14

申请号：US15682027

申请日：2017-08-21

Applicant: HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

Inventor： Byung Hyun LEE

IPC: F01M1/16 ,  F01M11/02 ,  F01M1/08

CPC classification number: F01M1/16 ,  F01M1/08 ,  F01M11/02 ,  F01M2001/083 ,  F01M2011/022

Abstract: A piston cooling apparatus for a vehicle, includes: a first gallery that is formed at one side of a cylinder block in a length direction, and receives an oil from an oil pump; a second gallery that is formed at the other side of the cylinder block in a length direction, and supplies the oil into piston cooling jets; and a solenoid valve that is disposed at one side of a hydraulic line of the second gallery. In particular, the solenoid valve bypasses the oil supplied from the first gallery and selectively supplies the oil to the second gallery.