公开(公告)号：US20220398875A1

公开(公告)日：2022-12-15

申请号：US17346133

申请日：2021-06-11

Applicant: Honda Motor Co., Ltd.

Inventor： Kaleb Stephens ,  John Michael Scelsi

IPC: G07C5/08 ,  G01L5/00 ,  G01M15/04 ,  F01L1/047 ,  F01L9/20 ,  F01L1/08

Abstract: An apparatus is provided to test valves. The apparatus includes a sensor and a driving mechanism. The driving mechanism is configured to control an external camshaft that is coupled to a valve train of an engine head. The apparatus controls the driving mechanism to control a rotation of the external camshaft that further controls an activation of each valve of the valve train associated with the engine head. The apparatus further controls the sensor to acquire information associated with the activation of each valve of the valve train based on the rotation of the external camshaft. The apparatus further compares the acquired information with pre-stored information, to determine an abnormality in each valve of the valve train, and generates a notification based on the comparison.

公开(公告)号：US20220333509A1

公开(公告)日：2022-10-20

申请号：US17233271

申请日：2021-04-16

Applicant: Ford Global Technologies, LLC

Inventor： Rani Kiwan ,  Chris Paul Glugla ,  Brad VanDerWege

IPC: F01L1/344 ,  F01L1/08 ,  F01L13/00 ,  F02D13/02 ,  F02D41/06 ,  F02D13/06

Abstract: Methods and systems are provided for providing secondary air to an exhaust system during catalyst warm-up. In one example, a method may include, during a cold start condition, operating an engine with a first number of cylinders unfired and a remaining number of cylinders fired during an engine cycle, opening an intake valve of an unfired cylinder of the first number of cylinders during an expansion stroke of the unfired cylinder, and opening an exhaust valve of the unfired cylinder during a compression stroke of the unfired cylinder. In this way, the unfired cylinders may provide the secondary air to the exhaust system during a stroke that increases mixing of the secondary air with burned exhaust gas from fired cylinders, thus increasing exotherm production in the exhaust system to increase a temperature of the catalyst.

公开(公告)号：US11473459B2

公开(公告)日：2022-10-18

申请号：US16922638

申请日：2020-07-07

Applicant: Ford Global Technologies, LLC

Inventor： Brad Alan VanDerWege ,  Michael Shelby

IPC: F01L13/08 ,  F02N11/08 ,  F01L13/00 ,  F01L1/08 ,  F01L9/10

Abstract: Methods and systems are provided for providing compression release during a stop/start event in an engine. In one example, a method includes: responsive to a request for a stop/start event in an engine with a continuously variable valve lift (CVVL) system including a compression release hydraulic valve actuator coupled to a valve of a first cylinder, determining a desired stop position of the engine; and prior to restarting the engine during the stop/start event, adjusting the compression release hydraulic valve actuator to open the valve during a compression stroke of the first cylinder. In this way, an amount of torque used to restart the engine may be reduced.

公开(公告)号：US11466595B2

公开(公告)日：2022-10-11

申请号：US16639172

申请日：2018-08-09

Applicant: THYSSENKRUPP PRESTA TECCENTER AG ,  thyssenkrupp AG

Inventor： Rene Kargl

IPC: F01L1/047 ,  F01L13/00 ,  F01L1/08

Abstract: A slide element for displacement of a cam segment in an axial direction along a camshaft may include a slide sleeve, which has a longitudinal toothing formed at least sectionally along an inner wall of the slide sleeve and has a latching section formed on the inner wall and serving for interaction with a latching means. The latching section comprises a latching means receiving part, which comprises at least two latching grooves formed adjacently in an axial direction and at least one latching elevation formed between the latching grooves of the latching means receiving part and directed inward. The latching elevation may be partially hardened exclusively in a latching means transfer region.

公开(公告)号：US20220220906A1

公开(公告)日：2022-07-14

申请号：US17416007

申请日：2019-12-09

Applicant: Doosan Infracore Co., Ltd.

Inventor： Jayun CHO ,  Youngdeok HAN ,  Dockoon YOO ,  Dongmyung KANG ,  Wook JUNG ,  Jungho KIM ,  Jongwook BYUN ,  Younghoon LEE ,  Taesub KIM

IPC: F02D13/02 ,  F01L1/08

Abstract: Provided is a valve control apparatus for an engine that opens and closes an exhaust valve and intake value of the engine while rotating in conjunction with a crankshaft of the engine, the valve control apparatus including an exhaust valve opening and closing device opening and closing the exhaust valve during a first exhaust valve opening period and an intake valve opening and closing device opening and closing the intake valve during a first intake valve opening period.

公开(公告)号：US11313334B2

公开(公告)日：2022-04-26

申请号：US17068032

申请日：2020-10-12

Applicant: Volvo Car Corporation

Inventor： Mats Morén

IPC: F02M39/02 ,  F01L1/053 ,  F01L1/08

Abstract: A force transfer arrangement for transferring a force from a rotating camshaft to an output device, that is able to reduce the transversal force on the camshaft. The proposed connection device force transfer arrangement is configured to cause forces to act on the camshaft from substantially opposite directions which effectively produces a resultant force on the camshaft to be close to zero, or at least be reduced compared to prior art force transfer solutions. Thus, the transverse forces on the camshaft and therefore on e.g. bearings supporting the camshaft are reduced thereby the lifetime of the bearings is prolonged.

公开(公告)号：US11306624B2

公开(公告)日：2022-04-19

申请号：US16930886

申请日：2020-07-16

Applicant: Caterpillar Inc.

Inventor： John Stephen Pipis, Jr. ,  Selvaganpathi Ganesan

IPC: F01L1/14 ,  F01L1/08 ,  F01L1/46 ,  F01L1/18 ,  F01M9/10 ,  F02M59/10 ,  F02M59/02 ,  F01L1/26 ,  F01L1/20

Abstract: A valve actuation system for an engine includes a rotatable camshaft, an injector actuation linkage, and a valve actuation linkage. The valve actuation linkage includes a valve lifter, a valve pushrod, and a rocker arm. At least one of a rocker arm center plane defined by the valve rocker arm or a lifter roller center plane defined by the valve lifter is spaced an offset distance from a pushrod axis, providing an increased contact width between an injector roller in the injector actuation linkage and one of a plurality of cam lobes of the camshaft. The valve lifter includes a fork defining a center plane spaced an offset distance from a center axis of the valve lifter. A rocker arm includes a screw bore offset relative to a rocker arm center plane.

公开(公告)号：US20220065139A1

公开(公告)日：2022-03-03

申请号：US17416020

申请日：2018-12-19

Applicant: JAGUAR LAND ROVER LIMITED

Inventor： Roger STONE ,  Richard TYRRELL ,  David KELLY

IPC: F01L1/08 ,  F01L9/22 ,  F01L9/40

Abstract: An electromagnetic valve actuator (100) and method of control thereof. The electromagnetic valve actuator is for at least one valve (300) of an internal combustion engine (40), the electromagnetic valve actuator comprising: a rotor (102); a stator (101) for rotating the rotor; output means (104, 106) for actuating the valve in dependence on rotation of the rotor; mechanical energy storage means (108, 110, 116, 118) arranged to store energy in dependence on rotation of the rotor and release the energy to assist rotation of the rotor; and phase varying means (400) for varying a phase between the mechanical energy storage means and the output means.

公开(公告)号：US20220018266A1

公开(公告)日：2022-01-20

申请号：US16930886

申请日：2020-07-16

Applicant: Caterpillar Inc.

Inventor： John Stephen Pipis, JR. ,  Selvaganpathi Ganesan

IPC: F01L1/14 ,  F01L1/08 ,  F01L1/46 ,  F01L1/18 ,  F01L1/20 ,  F01M9/10 ,  F02M59/10 ,  F02M59/02 ,  F01L1/26

Abstract: A valve actuation system for an engine includes a rotatable camshaft, an injector actuation linkage, and a valve actuation linkage. The valve actuation linkage includes a valve lifter, a valve pushrod, and a rocker arm. At least one of a rocker arm center plane defined by the valve rocker arm or a lifter roller center plane defined by the valve lifter is spaced an offset distance from a pushrod axis, providing an increased contact width between an injector roller in the injector actuation linkage and one of a plurality of cam lobes of the camshaft. The valve lifter includes a fork defining a center plane spaced an offset distance from a center axis of the valve lifter. A rocker arm includes a screw bore offset relative to a rocker arm center plane.

公开(公告)号：US11035263B2

公开(公告)日：2021-06-15

申请号：US16424891

申请日：2019-05-29

Applicant: Cummins Inc.

Inventor： Samuel C. Geckler ,  Vivek Anand Sujan ,  Adam C. Cecil ,  Anthony Kyle Perfetto

IPC: F01L13/00 ,  F01L1/344 ,  F02D13/02 ,  F01L13/08 ,  F02D9/06 ,  F01L1/26 ,  F01L13/06 ,  F01L1/18 ,  F02D13/04 ,  F01L1/047 ,  F01L1/053 ,  F01L1/20 ,  F01L1/08 ,  F01L9/20

Abstract: Systems, apparatuses and methods are disclosed that include an internal combustion engine including a plurality of cylinders operable by a valve actuation mechanism including a lifting mechanism having a compression brake valve profile configured to selectively lift the exhaust valves on a downstroke of the cylinders in response to a cranking condition of the internal combustion engine, wherein the compression braking valve profile is phased to the upstroke of the pistons.