公开(公告)号：US20210087952A1

公开(公告)日：2021-03-25

申请号：US17113529

申请日：2020-12-07

Applicant: BorgWarner Inc.

Inventor： Young Taek Sun

IPC: F01L1/348 ,  F01L1/02

Abstract: An engine system includes a first camshaft, a second camshaft, a first camshaft phaser, and a second camshaft phaser. The first camshaft phaser has a first camshaft sprocket, and the second camshaft phaser has a second camshaft sprocket. The engine system also includes a crankshaft spaced from the first and second camshafts, and a crankshaft sprocket coupled to the crankshaft. The engine system further includes a timing chain coupled to the first and second camshaft sprockets, and the crankshaft sprocket. The timing chain is configured to transmit torque from the crankshaft sprocket to the first and second camshaft sprockets upon rotation of the crankshaft. The engine system further includes a biasing member extending from a first end portion coupled to the first camshaft phaser to a second end portion coupled to the second camshaft phaser to maintain tension on the timing chain between the first and second camshaft phasers.

公开(公告)号：US20210003043A1

公开(公告)日：2021-01-07

申请号：US17028028

申请日：2020-09-22

Applicant: LSE R&D ENGINEERING, LLC

Inventor： Allen Eugene Looney

IPC: F01L1/26 ,  F01L7/06 ,  F01L7/14 ,  F01L1/02 ,  F01L1/12 ,  F02F1/22

Abstract: Apparatus for controlling valve timing in an internal combustion engine locates a first valve port in a first side of the engine cylinder and a second valve port in a second side of the engine cylinder. A first rotating valve disc and a second rotating valve disc are respectively disposed next to the first and second valve port. Each rotating valve disc includes a valve port. Each disc rotates in synchronism with the crankshaft to align its' port with the respective first and second valve ports. A variety of intake devices coupled to the first rotating valve disc control intake air flow into the engine cylinder, and a variety of exhaust devices coupled to the second rotating valve disc control exhaust gas flow from the engine cylinder.

公开(公告)号：US10883391B2

公开(公告)日：2021-01-05

申请号：US16518716

申请日：2019-07-22

Applicant: Ford Global Technologies, LLC

Inventor： Paul Nigel Turner ,  Kevin John Maile ,  Chris Michael Raines

IPC: F01P3/12 ,  F02M26/25 ,  F01L1/02 ,  F01M1/02 ,  F16H7/14 ,  F01L1/053 ,  F16H7/08

Abstract: Methods and systems are provided for a cam drive system of an engine. In one example, a front end of an engine includes an idler gear assembly including an idler gear and idler pulley, the idler gear in meshing engagement with a first end of a crankshaft and the idler pulley coupled to and sharing a rotational axis with the idler gear. The front end of the engine may further include first and second camshaft pulleys positioned vertically above the idler gear assembly and a cam drive belt contacting each of the first and second camshaft pulleys and the idler pulley.

公开(公告)号：US10787938B2

公开(公告)日：2020-09-29

申请号：US16344547

申请日：2016-10-28

Applicant: Mazda Motor Corporation

Inventor： Toshiaki Nishimoto ,  Keiji Araki

IPC: F01L1/34 ,  F01L1/344 ,  F02B63/06 ,  F02B67/04 ,  F01L1/24 ,  F01L1/02 ,  F01L1/18 ,  F01L1/047 ,  F01L1/053 ,  F01L13/00

Abstract: The number of advance chambers is larger than the number of retard chambers in an intake variable valve timing (VVT), whereas the number of retard chambers is larger than the number of advance chambers in an exhaust VVT. Accordingly, with limitation of an oil pressure that can be used by the VVTs, a pumping loss in a transition period in which a valve overlap amount is changed by advancing or retarding a valve timing can be reduced.

公开(公告)号：US10760635B2

公开(公告)日：2020-09-01

申请号：US16304756

申请日：2017-05-26

Applicant: Scherdel Innotec Forschungs-und Entwicklungs-GmbH

Inventor： Thomas Rausch ,  Georg Hannig ,  Christoph Angermann

IPC: F01L1/34 ,  F16F3/06 ,  F01L1/344 ,  F16F1/02 ,  F16F1/04 ,  F16H7/12 ,  F01L1/02 ,  F01L1/46 ,  F01L1/00 ,  F16H7/08

Abstract: A torsion spring assembly according to the invention includes a torsion spring having a cylindrical spring body of wound spring wire and with a plurality of torsion spring windings, and having first and second torsion spring ends for taking up forces in a direction of rotation, and a damping spring abutting the torsion spring on the inner side and having a cylindrical spring body of wound spring wire and with a plurality of damping spring windings, and having first and second damping spring wire ends, wherein the damping spring windings have their outer sides extending partially into the space formed between two respectively adjacent torsion spring windings and abutting in particular rounded, round or beveled inner abutment areas of respectively adjacent torsion spring windings with substantially radially outwardly directed bias.

公开(公告)号：US10738661B2

公开(公告)日：2020-08-11

申请号：US16331932

申请日：2017-09-08

Applicant: William Cullen Chapman, Jr.

Inventor： William Cullen Chapman, Jr.

IPC: F01L1/18 ,  F01L1/02 ,  F01L1/053 ,  F01M9/10 ,  F01M11/02

Abstract: A gearbox comprising an input shaft fixed with a first gear, an output shaft fixed with a second gear, and a rim gear without a web or hub rotatably mounted on a shaft having a hollow space. A lubrication line extends from within the shaft to a lubrication space disposed between an inner surface of the rim gear and an outer surface of the shaft. The rim gear is held in place on the shaft by a first interior surface of a first chamber member and a second interior surface of a second chamber member.

公开(公告)号：US20200248593A1

公开(公告)日：2020-08-06

申请号：US16775599

申请日：2020-01-29

Applicant: DENSO CORPORATION

Inventor： Soichi KINOUCHI ,  Kenji TADA ,  Makoto OTSUBO

IPC: F01L1/344 ,  F01L1/02 ,  F01L1/047

Abstract: A valve timing adjustment device includes: a first rotatable body that is rotated about a rotational axis synchronously with one of a drive shaft and a driven shaft of an engine; and a second rotatable body that is rotated about the rotational axis synchronously with the other one of the drive shaft and the driven shaft. The first rotatable body includes: a fastening portion, a slide portion and a bearing portion. The fastening portion is fastened to the one of the drive shaft and the driven shaft. The bearing portion includes an outer peripheral surface that is opposed to an inner peripheral surface of the second rotatable body, and the bearing portion rotatably supports the second rotatable body. The fastening portion projects on one axial side of the slide portion and the bearing portion in an axial direction toward the one of the drive shaft and the driven shaft.

公开(公告)号：US10677173B2

公开(公告)日：2020-06-09

申请号：US16159881

申请日：2018-10-15

Applicant: Amadeo Perez Fernandez

Inventor： Amadeo Perez Fernandez

IPC: F01L1/34 ,  F02D13/02 ,  F01L1/053 ,  F01L1/02 ,  F02D41/00 ,  F01L9/02 ,  F02B75/02

Abstract: A control system for internal combustion engines having four valves per cylinder. An inlet valve and an exhaust valve are controlled by a basic camshaft. Another inlet valve and another exhaust valve are controlled by a control camshaft. The two camshafts are connected to a crankshaft and engine torque is managed by an electronic control unit. The system comprises a motor/generator unit, connected to the control camshaft; a differential, connected to the crankshaft and to the control camshaft; a control shaft, connected to the differential; an actuator, connected to the control shaft; a one-way restrictor valve connected to a shut-off valve and to the actuator; an oil circuit, connected to the actuator by means of the shut-off valve and a control solenoid that acts on the shut-off valve.

公开(公告)号：US10648374B2

公开(公告)日：2020-05-12

申请号：US15746137

申请日：2016-08-11

Applicant: CUMMINS INC.

Inventor： Philipe F. Saad ,  Edward J. Lyford-Pike ,  Milan K. Visaria ,  Agneya Turlapati ,  Anamitra Bhattacharyya ,  Jason R. Griffin ,  Brendan C. Norton

IPC: F01L1/34 ,  F01L1/344 ,  F02B29/04 ,  F02D13/02 ,  F02D19/02 ,  G06F13/00 ,  F01L1/02 ,  F01L1/14 ,  F01L1/047

Abstract: A spark-ignited gas engine system comprises a combustion chamber defined by a piston, a head with a spark plug mechanism, and a cylinder having an associated intake valve and an associated exhaust valve, into which a mixture of combustible gas and air is entered via an intake manifold of the engine to drive a crankshaft. The system further comprises at least one turbocharger to compress the mixture. The system further comprises at least one camshaft, driven by the crankshaft via a gear assembly connected to the crankshaft, that comprises at least one cam that actuates the intake valve and the exhaust valve, at least one camphaser, coupled to the crankshaft via the gear assembly, and a controller to adjust a cam angle operation of the intake valve and the exhaust valve by adjusting the camphaser to a desired phase position to meet a target rotational phase of the camshaft.

公开(公告)号：US10550911B2

公开(公告)日：2020-02-04

申请号：US15743594

申请日：2016-07-22

Applicant: Francis A Nardella

Inventor： Francis A Nardella

IPC: F16F15/10 ,  B64D27/04 ,  F01L1/02 ,  F02B61/04 ,  F01L1/047 ,  F16F15/20 ,  F16F15/00 ,  F02B9/02 ,  F02B75/24 ,  F02B75/18

Abstract: An internal combustion engine for use with a propeller driven aircraft includes a camshaft adapted to function as an output shaft that rotates a propeller to provide propulsive thrust. A gear set is configured to transfer rotational power from the crankshaft to the camshaft and to rotate the camshaft at a velocity that is proportional to the rotational velocity of the crankshaft. The gear set is disposed rearward of the engine housing rearward wall and is configured to rotate the camshaft in a direction opposite the crankshaft rotation. The length of the camshaft reduces engine torsional vibration. In one embodiment, the engine is a six-cylinder compression ignition engine having a boxer configuration and can generate a peak output power within a range from about 300 horsepower to about 350 horsepower.