US 12,392,309 B2Granted

Exhaust gas recirculation valve assembly

AssigneePower Packer North America, Inc.

InventorsMark Jason Boswell, Timothy Garritt House

Life of this patent

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Abstract

An exhaust gas recirculation (EGR) valve assembly includes a valve housing with a wall defining a flow passage. The valve housing defines a bore communicating with the flow passage. A shaft is supported in the bore and extends into the flow passage. A flap is supported on the shaft in the flow passage. The flap is movable relative to the flow passage between a closed position and an open position. A sealing member projects from the wall into the flow path. The sealing member has a sealing surface that interacts with the flap in the closed position to inhibit gas flow through the flow passage, an opposite surface tapering toward the wall, and a circumferential end surface proximate and tapered away from the bore. The flap is coined against the sealing surface. A spider assembly is positioned between the shaft and a drive shaft of an actuator assembly.

Claims28

Dependent claims

An exhaust gas recirculation (EGR) valve assembly comprising:

a valve housing including a body with a wall defining a flow passage along a flow path between an inlet and an outlet, the valve housing further defining a bore communicating with the flow passage and extending transverse to the flow path;
a shaft supported in the bore and extending into the flow passage, the shaft including a first end proximate an actuator and a second end distal from the actuator;
a first bearing assembly supporting the shaft at the first end of the shaft, the first bearing assembly spaced apart from the flow passage;
a second bearing assembly supporting the shaft at the second end of the shaft, the second bearing assembly spaced apart from the flow passage;
a flap supported on the shaft in the flow passage, the flap being movable relative to the flow passage between a closed position and an open position, the flap positioned between the first bearing assembly and the second bearing assembly in a direction along a length of the shaft;
and
a sealing member connected to and projecting from the wall into the flow path, the sealing member having a sealing surface configured to interact with the flap in the closed position to inhibit gas flow through the flow passage, an opposite surface facing away from the sealing surface and tapering toward the wall, and a circumferential end surface proximate the bore, the end surface being tapered away from the bore.

4 more elements

An exhaust gas recirculation (EGR) valve assembly comprising:

a valve housing including a body with a wall defining a flow passage along a flow path between an inlet and an outlet;
a shaft supported by the valve housing and extending into the flow passage, the shaft extending along and being pivotable about a shaft axis;
a flap supported on the shaft in the flow passage, the flap being movable relative to the flow passage between a closed position, in which flow of gas through the flow passage is inhibited, and an open position;
an actuator assembly including a drive shaft extending along and pivotable about a drive axis;
and
a spider assembly configured to drivingly connect the drive shaft and the shaft, the spider assembly including:
a spider member defining a first slot facing toward the drive shaft and extending along a first slot axis and a second slot facing toward the shaft and extending along a second slot axis, the second slot axis being transverse to the first slot axis,
a first sliding member connectable to the drive shaft and positionable in the first slot, the first sliding member being configured to slide in the first slot and along the first slot axis, the first slot restraining movement of the first sliding member in a direction perpendicular to the first slot axis, and
a second sliding member connectable to the shaft and positionable in the second slot, the second sliding member being configured to slide in the second slot and along the second slot axis, the second slot restraining movement of the second sliding member in a direction perpendicular to the second slot axis.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/416,117Filed 18 Jan 2024 · us provisional application
Priority: 17 Feb 2023
Published: US 2024/0280071 A122 Aug 2024
Granted: 19 Aug 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

F02M 26/70
Constructional details of EGR valves: flap valves; Rotary valves; Sliding valves; Resilient valves
F02M 26/11
Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR]…
F02M 26/54
Using electric actuators, e.g. solenoids: rotary actuators, e.g. step motors
F02M 26/21
In relation to the intake system: with EGR valves located at or near the connection to the intake system