公开(公告)号：US12098662B2

公开(公告)日：2024-09-24

申请号：US17780041

申请日：2020-09-02

Applicant: Schaeffler Technologies AG & Co. KG

Inventor： Branimir Karic

IPC: F01L1/344

CPC classification number: F01L1/3442 ,  F01L1/344 ,  F01L2001/34426 ,  F01L2001/3445 ,  F01L2001/34453

Abstract: The disclosure relates to a vane type camshaft adjuster for a motor vehicle drive train. The camshaft adjuster having a stator, a rotor arranged such that it can rotate relative to the stator, working chambers formed between the stator and the rotor, each working chamber being divided into two sub-chambers by a radially projecting blade of the rotor, and a reservoir connected to the sub-chambers for storing hydraulic medium. The sub-chambers can be connected to a pump or a tank according to a switch position of a control valve of the camshaft adjuster. The control valve has a switch position in which a first sub-chamber of the two sub-chambers is connected to the tank and a second sub-chamber of the two sub-chambers is blocked from the pump.

公开(公告)号：US12012875B2

公开(公告)日：2024-06-18

申请号：US18193181

申请日：2023-03-30

Applicant: SUZUKI MOTOR CORPORATION

Inventor： Hisashi Ozeki

IPC: F01L1/344

CPC classification number: F01L1/344

Abstract: There is provided a variable valve device provided in a cylinder head and capable of changing a valve lift amount, including: a camshaft on which a plurality of cams with different valve lift amounts are formed; a switching mechanism configured to switch a cam for moving a valve among the plurality of cams; and an oil control valve configured to control an oil pressure for the switching mechanism. Oil starts to be supplied from the oil control valve to the switching mechanism at an end timing of a valve lift or in a zero range in which no valve lift occurs.

公开(公告)号：US11939892B2

公开(公告)日：2024-03-26

申请号：US17194801

申请日：2021-03-08

Applicant: DENSO CORPORATION

Inventor： Takahito Kamiya

IPC: F01M1/10 ,  F01L1/344 ,  F01L1/352 ,  F01M1/06

CPC classification number: F01M1/10 ,  F01L1/344 ,  F01L1/352 ,  F01M1/06 ,  F01L2810/02 ,  F01M2001/064 ,  F01M2001/105

Abstract: A valve timing adjustment device includes: a driving rotating body that rotates with a crankshaft; a driven rotating body that rotates with a camshaft; a reduction mechanism configured to change a relative rotation phase of the driving rotating body and the driven rotating body by a driving force of an actuator; and a filter unit capable of capturing a foreign matter contained in lubricating fluid supplied into the reduction mechanism. The reduction mechanism includes: an internal gear portion having internal teeth formed inward in a radial direction, and an external gear portion having external teeth formed outward in the radial direction to mesh with the internal teeth. The driven rotating body has a supply hole penetrating in an axial direction. The filter unit has holes penetrating in the axial direction, and the holes are arranged in a flow path of the lubricating fluid connected to the supply hole.

公开(公告)号：US11905861B2

公开(公告)日：2024-02-20

申请号：US17537975

申请日：2021-11-30

Applicant: Schaeffler Technologies AG & Co. KG

Inventor： Brian Lee

IPC: F01L1/344

CPC classification number: F01L1/344 ,  F01L1/3442 ,  F01L2001/3445

Abstract: A camshaft phaser arrangement configured for adjusting a phase between a first camshaft element and a second camshaft element is disclosed. The arrangement includes a rotor configured to be drivably connected to the first camshaft element. The rotor is configured to be selectively rotationally driven via hydraulic fluid such that rotation of the rotor phases the first camshaft element. A phasing adjuster is configured to pivot based on rotation of the rotor. The phasing adjuster includes a first engagement element configured to engage with a second engagement element on the second camshaft element, such that rotation of the rotor is configured to phase the second camshaft via the phasing adjuster.

公开(公告)号：US11643950B2

公开(公告)日：2023-05-09

申请号：US17319185

申请日：2021-05-13

Applicant: BorgWarner Inc.

Inventor： Andrew Morris ,  Jiju Alexander ,  Daniel Brown

IPC: F01L9/20 ,  F01L1/344 ,  F02D13/08 ,  F01L1/352

CPC classification number: F01L9/20 ,  F01L1/344 ,  F02D13/08 ,  F01L1/352 ,  F01L2800/01 ,  F01L2820/032 ,  F01L2820/041 ,  F01L2820/044

Abstract: A method includes determining a value of an operational motor current limit and setting a value of a startup current limit equal to a predetermined value in excess of the value of the operational motor current limit if a set of predetermined conditions is satisfied. The method includes determining that operation of the engine has been interrupted, operating the electric motor of the variable valve timing mechanism with a current having a magnitude that is less than or equal to the startup current limit after determining that operation of the engine has been interrupted, determining that operation of the engine has resumed, and operating the electric motor of the variable valve timing mechanism with a current having a magnitude that is less than or equal to the operational motor current limit after determining that operation of the engine has resumed.

公开(公告)号：US20190249607A1

公开(公告)日：2019-08-15

申请号：US16249662

申请日：2019-01-16

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tomohiro NAKANO

IPC: F02D13/06 ,  F01L13/00 ,  F02D13/02

CPC classification number: F02D13/06 ,  F01L1/344 ,  F01L13/0005 ,  F01L2013/001 ,  F02D13/0203 ,  F02D17/02 ,  F02D41/0087 ,  F02D2041/0012

Abstract: An engine controller includes a cylinder deactivation control unit and a valve stopping control unit. When performing the valve stopping control, the valve stopping control unit, in a case in which the cylinder deactivation control unit executes the cylinder deactivation with the deactivated cylinder fixed, stop the operation for opening and closing the exhaust valve of the deactivated cylinder from a first combustion cycle after starting the cylinder deactivation and stop the operation for opening and closing the intake valve of the deactivated cylinder from a second combustion cycle after starting the cylinder deactivation. The valve stopping control unit, in a case in which the cylinder deactivation control unit executes the cylinder deactivation without fixing the deactivated cylinder, stop the operation for opening and closing both the intake valve and the exhaust valve of the deactivated cylinder from the first combustion cycle after starting the cylinder deactivation.

公开(公告)号：US20190249606A1

公开(公告)日：2019-08-15

申请号：US16333249

申请日：2016-10-06

Applicant: VOLVO TRUCK CORPORATION

Inventor： Anders MOHLIN

IPC: F02D13/04 ,  F02D9/06 ,  F02D13/02 ,  F02D41/00 ,  F02D9/02 ,  F01L1/08 ,  F01L1/18 ,  F01L1/344 ,  F01L13/06

CPC classification number: F02D13/04 ,  F01L1/08 ,  F01L1/181 ,  F01L1/34 ,  F01L1/344 ,  F01L13/065 ,  F01L2013/105 ,  F01L2105/00 ,  F01L2800/00 ,  F01N13/107 ,  F01N2240/36 ,  F01N2590/08 ,  F02D9/02 ,  F02D9/06 ,  F02D13/0249 ,  F02D13/0276 ,  F02D41/0007 ,  F02D41/12 ,  F02D2009/0242 ,  F02D2700/04

Abstract: An internal combustion engine includes a cylinder including a piston connected to a rotatable crankshaft, an air guide arranged to guide an air flow to the cylinder an adjustable air flow restriction element arranged to restrict the How through the air guide, an exhaust guide being arranged to guide a gas flow from the cylinder, an adjustable exhaust flow restriction element arranged to restrict the flow through the exhaust guide, an exhaust valve arranged to control a communication between the cylinder and the exhaust guide, and an exhaust valve actuation assembly for actuating the exhaust valve so as to perform in each of a plurality of cycles of the cylinder an exhaust valve actuation sequence, wherein the exhaust valve actuation assembly is adapted to control the commencement of the exhaust valve actuation sequence to occur selectively at any crankshaft angle within a non-zero crankshaft angle interval.

公开(公告)号：US20180371962A1

公开(公告)日：2018-12-27

申请号：US15633039

申请日：2017-06-26

Applicant: Schaeffler Technologies AG & Co. KG

Inventor： André Vieira de Miranda ,  Dan Zehan

IPC: F01L1/344 ,  F16F15/126 ,  F01L1/047

CPC classification number: F01L1/344 ,  F01L1/022 ,  F01L1/047 ,  F01L1/0532 ,  F01L1/143 ,  F01L1/34403 ,  F01L13/0036 ,  F01L2001/34496 ,  F01L2103/00 ,  F01L2810/03 ,  F01L2820/041 ,  F16F15/126 ,  F16F15/145

Abstract: A variable cam phaser system including a variable cam phaser and a vibration damper fixed to the variable cam phaser is disclosed. A method for damping vibration for a variable cam phaser is also disclosed. The method includes providing a variable cam phaser, providing a vibration damper, and fixing the vibration damper to the variable cam phaser.

公开(公告)号：US20180355811A1

公开(公告)日：2018-12-13

申请号：US15618881

申请日：2017-06-09

Applicant: GM Global Technology Operations LLC

Inventor： Zhaojian Li ,  Julian R. Verdejo ,  Michael E. Deffenbaugh

IPC: F02D41/14 ,  F02D41/00 ,  F02M26/52 ,  F01L1/344

CPC classification number: F02D41/1401 ,  F01L1/344 ,  F02D41/0007 ,  F02D41/1406 ,  F02D41/1497 ,  F02D2041/1412 ,  F02D2041/1433 ,  F02D2200/101 ,  F02M26/52

Abstract: An engine control system for a vehicle, includes a model predictive control (MPC) module that identifies sets of possible target values based on an engine torque request, determines predicted operating parameters for the sets of possible target values, determines cost values for the sets of possible target values, selects one of the sets of possible target values based on the cost values; and sets target values based on the possible target values of the selected one of the sets; and a first actuator module that controls a first engine actuator based on a first one of the target values. The MPC module determines at least one of the predicted operating parameters at a future point in time based on a predicted value of engine rpm, which is determined based on a plurality of recent engine rpm measurements.

公开(公告)号：US20180340465A1

公开(公告)日：2018-11-29

申请号：US15580828

申请日：2016-06-16

Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

Inventor： Kentaro MIKAWA

IPC: F02B33/18

CPC classification number: F02B33/18 ,  F01L1/344 ,  F01L2001/0537 ,  F01L2250/02 ,  F01L2800/01 ,  F01L2820/032 ,  F02D13/02 ,  F02D41/009 ,  F02D41/062 ,  F02D2041/001 ,  F02D2041/0092

Abstract: The present invention has: a crank angle sensor 4 that outputs a crank angle signal in response to rotation of a crankshaft 2, the crank angle signal being preset to indicate reference positions; a cam sensor 5 that outputs cam signal pulses in response to rotation of an intake camshaft 3 for opening and closing an engine valve; an electric motor 6 that relatively rotates intake camshaft 3 with respect to crankshaft 2, so that electric motor 6 can change a rotational phase angle of intake camshaft 3 with respect to crankshaft 2; and an electronic control unit 7 that computes an actual rotational phase angle of intake camshaft 3 based on a first cam signal pulse detected after start of cranking and a first reference position of the crank signal detected thereafter, to calculate an absolute position of a variable valve timing mechanism 14.