Cost optimized electric EGR valve
First Claim
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1. An emission control valve assembly for controlling the flow of exhaust gases comprising:
- a valve housing defining a flow path for exhaust gases;
a valve element movable within the valve housing for controlling the flow of exhaust gases through the valve housing;
a calibration plug attached to the valve element; and
an actuator for selectively driving the valve element including an armature attached to the calibration plug.
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Abstract
An exhaust gas recirculation (EGR) valve includes an actuator mountable to a valve assembly such that a single actuator design can be utilized for different valve assemblies. The actuator is linked to the valve assembly through a calibration plug that provides for the calibration of an actuator armature position to a desired valve element position. The interface between the armature and valve element with the calibration plug provide adjustment and calibration to tailor operation of the actuator to a desired operation of the valve assembly.
67 Citations
23 Claims
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1. An emission control valve assembly for controlling the flow of exhaust gases comprising:
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a valve housing defining a flow path for exhaust gases;
a valve element movable within the valve housing for controlling the flow of exhaust gases through the valve housing;
a calibration plug attached to the valve element; and
an actuator for selectively driving the valve element including an armature attached to the calibration plug. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of assembling an exhaust gas recirculation device comprising the steps of:
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a) defining a gas flow path through a valve housing;
b) supporting a valve element within the valve housing;
c) attaching an actuator to the valve housing; and
d) positioning an armature of the actuator relative to the valve element in a desired relative orientation to calibrate operation of the valve element with operation of the actuator. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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Specification