公开(公告)号：US11536168B2

公开(公告)日：2022-12-27

申请号：US17328138

申请日：2021-05-24

Applicant: Eaton Intelligent Power Limited

Inventor： Majo Cecur ,  Andrei Radulescu ,  Michael J. Campbell ,  Mark Van Wingerden

IPC: F01L13/06 ,  F01L1/46 ,  F01L13/00 ,  F01L1/26 ,  F01L1/24 ,  F01L1/18

Abstract: A type II valve train assembly that selectively opens first and second intake valves and first and second exhaust valves is provided. The valve train assembly includes an intake rocker arm assembly and an exhaust rocker arm assembly. The valve train assembly is configurable for operation in any combination of activated and deactivated states of engine braking and cylinder deactivation. The exhaust rocker arm assembly includes a first exhaust rocker arm, a second exhaust rocker arm and an engine brake exhaust rocker arm. A first exhaust HLA is associated with the first exhaust rocker arm. A second exhaust HLA is associated with the second exhaust valve. An exhaust actuation assembly selectively actuates to alter travel of the first and second exhaust HLAs to change a state of cylinder deactivation between activated and deactivated.

公开(公告)号：US20220381164A1

公开(公告)日：2022-12-01

申请号：US17878165

申请日：2022-08-01

Applicant: LSE R&D ENGINEERING LIMITED

Inventor： Allen Eugene Looney

IPC: F01L7/18 ,  F01L1/02 ,  F01L1/12 ,  F01L1/26 ,  F16H1/06 ,  F02F1/22 ,  F01L7/06 ,  F01L7/14 ,  F02F7/00

Abstract: A valve system/method suitable for an internal combustion engine (ICE), compressor pump, vacuum pump, and/or reciprocating mechanical device is disclosed. The system/method is optimized for construction of a four-stroke ICE. The rudimentary system incorporates a unitized intake and exhaust engine block cover (UEC) that enclose an intake rotary valve cylinder (IVC) and exhaust rotary valve cylinder (EVC) that control intake/exhaust flow through a respective intake rotary valve port (IVP) and an exhaust rotary valve port (EVP) into and out of a combustion cylinder that provides power to a piston and crankshaft. An intake multi-staged valve (IMV) and exhaust multi-staged valve (EMV) provide intake and exhaust flow control for the IVC/IVP and EVC/EVP. An enhanced system may include a variety of intake/exhaust port seals (IPS/EPS), forced induction (FIN), forced discharge (FID), centrifugal advance (CAD), and/or cooling channel spool (ICS/ECS).

公开(公告)号：US20220364484A1

公开(公告)日：2022-11-17

申请号：US17875856

申请日：2022-07-28

Applicant: LSE R&D ENGINEERING LIMITED

Inventor： Allen Eugene Looney

IPC: F01L7/18 ,  F01L1/02 ,  F01L1/12 ,  F01L1/26 ,  F16H1/06 ,  F02F1/22 ,  F01L7/06 ,  F01L7/14 ,  F02F7/00

Abstract: A valve system/method suitable for an internal combustion engine (ICE), compressor pump, vacuum pump, and/or reciprocating mechanical device is disclosed. The system/method is optimized for construction of a two-stroke ICE. The rudimentary system incorporates an intake engine block cover (IEC) and exhaust engine block cover (EEC) that enclose an intake rotary valve cylinder (IVC) and exhaust rotary valve cylinder (EVC) that control intake/exhaust flow through a respective intake rotary valve port (IVP) and an exhaust rotary valve port (EVP) into and out of a combustion cylinder that provides power to a piston and crankshaft. Intake/exhaust multi-staged valves (IMV/EMV) provide intake/exhaust flow control for the IVC/IVP and EVC/EVP. An enhanced system may include a variety of intake/exhaust port seals (IPS/EPS), forced induction/discharge (FIN/FID), centrifugal advance (CAD/ICA/ECA), and/or cooling channel spool (ICS/ECS).

公开(公告)号：US11480076B1

公开(公告)日：2022-10-25

申请号：US17545749

申请日：2021-12-08

Applicant: Hyundai Motor Company ,  Kia Corporation

Inventor： Jae Hee Jeon ,  Woong Na

IPC: F01L13/06 ,  F01L1/24 ,  F01L1/26 ,  F01L1/46 ,  F01L1/18

Abstract: A compression release type engine brake includes a first opening unit and a second opening unit each including an exhaust rocker arm, an adjusting screw provided at an end portion of the exhaust rocker arm, a brake module in which brake oil is selectively and a brake piston mount portion is formed therein, a brake piston which is selectively protruded according to the oil supply inside the brake module, a reset member selectively exhausting the oil in the brake module, and a valve bridge connected to the brake piston and provided with an exhaust valve, and wherein a rocker arm protrusion is formed in the exhaust rocker arm of at least one of the first opening unit and the second opening unit, and the shaft spring presses the rocker arm protrusion and adjusts a distance between the first opening unit and the second opening unit.

公开(公告)号：US20220307392A1

公开(公告)日：2022-09-29

申请号：US17703361

申请日：2022-03-24

Applicant: Pacbrake Company

Inventor： Kody TAYLOR ,  James BALDWIN ,  Peter STEC

IPC: F01L13/06 ,  F01L1/46 ,  F01L1/18 ,  F01L1/26 ,  F01L9/10 ,  F01L9/40 ,  F01L1/22 ,  F02D13/04

Abstract: A compression-release engine brake system operating an exhaust valve of an engine during a compression-release engine braking operation. The compression-release brake system comprises an exhaust rocker arm and a brake reset device disposed in a reset bore formed in the exhaust rocker arm. The brake reset device comprises a reset check valve, a slider-piston slidably disposed in the reset bore and an external slider bias spring biasing the piston foot away from the brake reset device. The external slider bias spring is disposed outside the reset bore and around the piston-slider. The brake reset device permits pressurized hydraulic fluid to flow from a supply conduit to a reset conduit to supply a brake actuation piston when the reset check valve is open. The actuation piston extends and engages the exhaust valve toward the end of a compression stroke of the internal combustion engine, and the brake reset device resets.

公开(公告)号：US11408310B2

公开(公告)日：2022-08-09

申请号：US17247481

申请日：2020-12-12

Applicant: Jacobs Vehicle Systems, Inc.

Inventor： Justin D Baltrucki ,  G. Michael Gron, Jr.

IPC: F01L13/00 ,  F01L1/46 ,  F01L13/06 ,  F01L1/14 ,  F01L1/18 ,  F01L1/26 ,  F01L1/24 ,  F01L1/245 ,  F01L1/047

Abstract: A valve actuation system comprises a valve actuation motion source configured to provide a main valve actuation motion and an auxiliary valve actuation motion for actuating at least one engine valve via a valve actuation load path. A lost motion subtracting mechanism is arranged in the valve actuation load path and configured, in a first default operating state, to convey at least the main valve actuation motion and configured, in a first activated state, to lose the main valve actuation motion and the auxiliary valve actuation motion. Additionally, a lost motion adding mechanism configured, in a second default operating state, to lose the auxiliary valve actuation motion and configured, in a second activated state, to convey the auxiliary valve actuation motion, wherein the lost motion adding mechanism is in series with the lost motion subtracting mechanism in the valve actuation load path at least during the second activated state.

公开(公告)号：US20220205373A1

公开(公告)日：2022-06-30

申请号：US17655209

申请日：2022-03-17

Applicant: Cummins Inc.

Inventor： Dixon Malcolm Correa

IPC: F01L13/06 ,  F01L1/18 ,  F01L1/24 ,  F01L1/26

Abstract: An exhaust valve opening apparatus such as for an engine compression braking system includes a rocker shaft for supplying control fluid to an controllable valve and for distributing the control fluid to a primary and second piston arrangement that selectively opens an exhaust valve in response to the control fluid being pressurized.

公开(公告)号：US11326482B2

公开(公告)日：2022-05-10

申请号：US16673837

申请日：2019-11-04

Applicant: Ford Global Technologies, LLC

Inventor： Michael Shelby

IPC: F01L1/34 ,  F01L1/26 ,  F02B75/20 ,  F01L1/344 ,  F02B75/18

Abstract: Methods and systems are provided for a valve system for actuating two cylinder valves in an engine. In one example, the valve system may include a single pump and a solenoid valve capable of non-concurrently actuating the two cylinder valves coupled to separate cylinders.

公开(公告)号：US11313254B2

公开(公告)日：2022-04-26

申请号：US16979591

申请日：2019-03-19

Applicant: FPT MOTORENFORSCHUNG AG

Inventor： Harald Fessler

IPC: F01L1/18 ,  F01L1/26 ,  F01L1/24 ,  F01L1/344 ,  F01L13/00

Abstract: The present invention provides for Variable Valve Actuation comprising a cam, a valve suitable to displace between a closed position and an open condition caused by said cam, and further comprising a main rocker arm suitable to swing over a fulcrum, mechanically interacting with said valve, by means of a guide profile, and wherein said cam interacts with said main rocker arm causing said valve displacement as a consequence of said main rocker arm swinging. The target is to prevent a valve brake due to the guide profile and enable higher system stiffness. Accumulator less designs are feasible with this system.

公开(公告)号：US11300061B2

公开(公告)日：2022-04-12

申请号：US17251972

申请日：2019-06-11

Applicant: Eaton Intelligent Power Limited

Inventor： James E. McCarthy, Jr. ,  Dale Arden Stretch ,  Mihai Dorobantu

IPC: F02D13/02 ,  F01L13/06 ,  F02D13/04 ,  F01L13/00 ,  F01L1/26 ,  F01L1/46 ,  F01L1/18 ,  F01L1/24

Abstract: A method for engine braking on a type III valvetrain diesel engine comprises, on a first downstroke of a reciprocating piston, deactivating a normal intake lift profile on a first intake valve to implement a deactivated intake profile. Before a first upstroke of the reciprocating piston completes, a late intake valve closing lift profile is actuating on a second intake valve and beginning an engine brake lift profile on a first exhaust valve. On a second downstroke of the reciprocating piston, the engine brake lift profile on the first exhaust valve is completing and a normal exhaust lift profile is deactivating on a second exhaust valve to implement a deactivated exhaust profile on the second exhaust valve. Before a second upstroke of the reciprocating piston completes, a second engine brake lift profile is beginning on the first exhaust valve.