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公开(公告)号：US11725548B2
公开(公告)日：2023-08-15
申请号：US17847160
申请日：2022-06-22
发明人： Murtuza Gunderwala
CPC分类号： F01L9/16 , F01L9/40 , F02D13/0253 , F01L2201/00 , F01L2820/031 , F01L2820/034 , F01L2820/042
摘要： The present disclosure relates to a camless engine in which a camless system is configured for controlling one or more engine valves of an internal combustion engine is disclosed. The system comprises a pneumatic accumulator configured to store compressed air, and at least one pneumatic actuator having a piston rod. The pneumatic actuator is configured for abutment with the engine valves of the internal combustion engine. The system further comprises at least one pneumatic control valve fluidly connected between the pneumatic accumulator and the pneumatic actuator, a sensor configured to sense an engine parameter and to transmit a signal to actuate the pneumatic control valves and an electronic control unit configured to control the pneumatic valves based on the signal received from the sensor.
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2.发明公开公开(公告)号：US20240035400A1
公开(公告)日：2024-02-01
申请号：US18268876
申请日：2019-12-20
摘要： In order to provide a more reliable configuration for a hydraulic drive for accelerating and braking in particular a gas exchange valve (20) of internal combustion engines or other reciprocating engines, in particular if the occurring maximum travel of the moving mass can deviate considerably from an expected setpoint position, it is proposed that the drive piston (23) has at least one control edge (31) corresponding to an inflow opening (33), which, when a defined travel hab has been attained, prevents the inflow of drive pressure p1 into the drive chamber (27) and/or prevents the low-loss outflow of pressure medium from the brake chamber (29) to the basic pressure level (40), wherein the remaining hydraulic drive force vanishes, becomes small or changes its sign when said travel hab is attained.
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公开(公告)号：US20230406285A1
公开(公告)日：2023-12-21
申请号：US17825676
申请日：2022-05-26
申请人： Ben T Dean , Michael A Barkey
发明人： Ben T Dean , Michael A Barkey
IPC分类号： B60W20/16 , B60W10/06 , F01N3/023 , F02D41/02 , B60W10/08 , F02D41/12 , F01L13/00 , F02D13/06 , F01L9/10 , F01L9/20 , F01L9/40
CPC分类号： B60W20/16 , B60W10/06 , F01N3/023 , F02D41/029 , B60W10/08 , F02D41/12 , F01L2013/001 , F02D13/06 , F01L9/10 , F01L9/20 , F01L9/40 , B60W2540/10 , F01L13/0005
摘要： Hybrid powertrain control techniques include determining whether a regeneration event of a gasoline particulate filter (GPF) is necessary using a GPF loading model, commanding a full cylinder deactivation system to temporarily disable all of the cylinders of the engine instead of performing a deceleration fuel shutoff (DFSO) event of the engine and disabling fueling to the engine when the GPF regeneration event is not necessary, commanding the full cylinder deactivation system to keep all of the cylinders of the engine open and disabling fueling to the engine to perform the DFSO event when the GPF regeneration event is necessary, and controlling an electric propulsion motor to supply a requested drive torque, wherein keeping all of the cylinders of the engine open to perform the DFSO of the engine mitigates or eliminates insufficient regeneration of the GPF to thereby increase or extend its useful life.
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公开(公告)号：US11788442B2
公开(公告)日：2023-10-17
申请号：US17886699
申请日：2022-08-12
发明人： Roger Stone , Richard Tyrrell , David Kelly
CPC分类号： F01L9/40 , F01L9/22 , F01L1/30 , F02D2013/0296
摘要： An electromagnetic valve actuator and method of control thereof. The electromagnetic valve actuator is for at least one valve of an internal combustion engine, the electromagnetic valve actuator comprising: a rotor; a stator for rotating the rotor; output means for actuating the valve in dependence on rotation of the rotor; mechanical energy storage means 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 for varying a phase between the mechanical energy storage means and the output means.
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公开(公告)号：US11788441B2
公开(公告)日：2023-10-17
申请号：US17790701
申请日：2020-12-29
发明人： Lifeng Wang , Xiuqiang Wang
摘要： A fully variable electro-hydraulic valve system having a buffering function, comprising: a camshaft (101), a valve assembly (106), a sliding sleeve (103), a spiral shaft (102), a piston (105), and a position restoring spring (104). The sliding sleeve (103) is fixed relative to an engine, the piston (105) abuts against the valve assembly (106), and the spiral shaft (102) is controlled by a cam surface of the camshaft (101) in the axial direction. sliding sleeve (103) is provided with a buffering oil hole (123) that communicates with a buffering cavity (R) and with a low-pressure oil circuit of the engine by means of a throttling device (124). When a valve is going to be seated, the piston collides with a buffering ring (121), and due to the effect of the throttling device, engine oil within the buffering cavity has a damping effect on the movement of the buffering ring.
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公开(公告)号：US12123369B2
公开(公告)日：2024-10-22
申请号：US18107352
申请日：2023-02-08
CPC分类号： F02D41/402 , F01L1/267 , F01L9/40 , F02D13/0203 , F02D13/0265 , F02D41/0255 , F01L2009/4084
摘要： An internal combustion engine system and methods of use are provided. The internal combustion engine system may comprise an engine chamber with a piston, and one or more of the following, configured to enable a negative valve overlap (NVO) mode of operation in which an intake valve opening (IVO) timing is later than an exhaust valve closing (EVC) timing: a continuously variable valve duration (CVVD) mechanism for both an intake valve and an exhaust valve; a dual CVVD and continuously variable valve timing (CVVT) mechanism for both the intake valve and the exhaust valve; and a cam system. The internal combustion system may comprise a fuel delivery system comprising one or more of a direct injector and a port fuel injector; and may comprise an ignition system.
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公开(公告)号：US20240263597A1
公开(公告)日：2024-08-08
申请号：US18107352
申请日：2023-02-08
CPC分类号： F02D41/402 , F01L1/267 , F01L9/40 , F02D13/0203 , F02D13/0265 , F02D41/0255 , F01L2009/4084
摘要： An internal combustion engine system and methods of use are provided. The internal combustion engine system may comprise an engine chamber with a piston, and one or more of the following, configured to enable a negative valve overlap (NVO) mode of operation in which an intake valve opening (IVO) timing is later than an exhaust valve closing (EVC) timing: a continuously variable valve duration (CVVD) mechanism for both an intake valve and an exhaust valve; a dual CVVD and continuously variable valve timing (CVVT) mechanism for both the intake valve and the exhaust valve; and a cam system. The internal combustion system may comprise a fuel delivery system comprising one or more of a direct injector and a port fuel injector; and may comprise an ignition system.
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公开(公告)号：US20240175403A1
公开(公告)日：2024-05-30
申请号：US18524380
申请日：2023-11-30
CPC分类号： F02D41/042 , F01L9/10 , F01L9/40 , F01L13/0005 , F02D13/0203 , F02D13/06 , F02D41/0087 , F01L2009/4094
摘要： Control of engine shutdown of an internal combustion engine comprising a plurality of cylinders and, for each of the plurality of cylinders, a hydraulically controlled lost motion component operatively connected to an engine valve corresponding to the cylinder, is achieved when an engine controller determines that shutdown of the internal combustion engine has been requested. Responsive to the request for shutdown, the engine controller initiates or continues cylinder deactivation operation for each of at least one cylinder of the plurality of cylinders. The initiation or continuation of the cylinder deactivation operation for each of the at least one cylinder comprises, for an input to the hydraulically controlled lost motion component for each of at least one engine valve corresponding to the cylinder, operating the input to provide the cylinder deactivation operation for a duration at least long enough to complete shutdown of the internal combustion engine.
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公开(公告)号：US12006851B2
公开(公告)日：2024-06-11
申请号：US17435228
申请日：2020-02-25
申请人： FREEVALVE AB
发明人： Urban Carlson , Rowhan Toi Neilson
CPC分类号： F01L9/16 , F01L9/40 , F01P5/10 , F15B1/04 , F25B45/00 , G05D16/208 , F25B2345/006 , F25B2400/19 , F25B2600/2523
摘要： A pressure fluid handling system includes a closed pressure fluid circuit. The pressure fluid circuit includes, connected in series, a compressor and a pressure sink and a primary pressure fluid route from the compressor to the pressure sink and a secondary pressure fluid route from the pressure sink to the compressor. The pressure fluid handling system further includes a pressure fluid accumulator connected to the pressure fluid circuit via a first pressure fluid accumulator conduit. The first pressure fluid accumulator conduit includes a pump configured to pump pressure fluid from the pressure fluid circuit to the pressure fluid accumulator to lower the pressure levels in the pressure fluid circuit, and in that the pressure fluid handling system includes a controllable component for returning the pressure fluid from the pressure fluid accumulator to the pressure fluid circuit to increase the pressure levels in the pressure fluid circuit.
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10.发明公开公开(公告)号：US20240183291A1
公开(公告)日：2024-06-06
申请号：US18528560
申请日：2023-12-04
CPC分类号： F01L13/0005 , F01L9/10 , F01L9/40 , F01L13/06 , F02D13/0203 , F02D13/04 , F02D13/06 , F01L2760/00
摘要： A valve actuation system comprises a cylinder deactivation controller operatively connected to and in fluid communication with intake and exhaust deactivators for at least one cylinder. The valve actuation system further comprises an engine braking controller operatively connected to and in fluid communication with the engine braking actuators for the at least one cylinder. A braking-dependent deactivator controller is disposed between and in fluid communication with the cylinder deactivation controller and the intake deactivators, and in fluid communication with the engine braking controller via a control input. The braking-dependent deactivator controller is configured, in a first state based on its control input, to permit hydraulic fluid flow in hydraulic fluid control passages for the intake deactivators when in a non-1.5-stroke engine braking mode and, in a second state, to vent the hydraulic fluid control passages for the intake deactivators when in a 1.5-stroke engine braking mode.
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