1. A modulating bypass valve comprising:
a valve housing defining a modulating fluid passageway and a bypassing fluid passageway through the housing;
a throttle plate assembly inserted through the valve housing and having a rotating shaft on an axis that is generally perpendicular to the modulating fluid passageway and the bypassing fluid passageway;
a modulating throttle plate attached to the shaft and located within the modulating fluid passageway;
a bypassing throttle plate attached to the shaft and located within the bypassing fluid passageway; and
an actuator for rotating the shaft.
2. The valve of claim 1 wherein the modulating fluid passageway and the bypassing fluid passageway are generally parallel.
3. The valve of claim 1 wherein the shaft further comprises a modulator shaft and a bypassing shaft that are coupled together with a clutch driver.
4. The valve of claim 3 further comprising a housing pocket defined by the valve housing, wherein the housing pocket is an opening in the valve housing that is parallel to the modulating fluid passageway and located between the modulating fluid passageway and the bypassing fluid passageway.
5. The valve of claim 3 wherein the clutch driver is one of mechanical, electric, hydraulic, magnetic, and pneumatic.
6. The valve of claim 1 wherein the modulating throttle plate is a disk that is sized and shaped to be generally the same size and shape as a cross-section of the modulating fluid passageway.
7. The valve of claim 1 further comprising a return spring disposed around the shaft for rotating the shaft to a default position when the actuator is not actuated.
8. The valve of claim 1 wherein the modulating throttle plate and the bypassing throttle plate are rotationally offset from each other on the axis.
9. A modulating bypass valve comprising:
a valve housing defining a modulating fluid passageway and a bypassing fluid passageway through the valve housing;
a throttle plate assembly inserted through the valve housing and having a modulator shaft on an axis that is generally perpendicular to the modulating fluid passageway, and a bypassing shaft on an axis that is generally perpendicular to the bypassing fluid passageway;
a modulating throttle plate attached to the modulator shaft and located within the modulating fluid passageway;
a first actuator for rotating the modulator shaft and the modulating throttle plate within the modulating fluid passageway;
a bypassing throttle plate attached to the bypassing shaft and located within the bypassing fluid passageway; and
a second actuator for rotating the bypassing shaft and the bypassing throttle plate within the bypassing fluid passageway.
10. The valve of claim 9 wherein the modulator shaft and the bypassing shaft define the same axis.
11. The valve of claim 9 further comprising a return spring disposed around the modulator shaft for rotating the modulator shaft to a default position when the first actuator is not actuated, and a second return spring disposed around the bypassing shaft for rotating the bypassing shaft to a default position when the second actuator is not actuated.
12. A method of modulating and bypassing EGR fluid flow in a valve of an EGR system, the method comprising the steps of:
providing a valve housing defining a modulating fluid passageway and a bypassing fluid passageway through the valve housing;
rotating a modulating throttle plate within the modulating fluid passageway to selectively open and close the modulating fluid passageway;
rotating a bypassing throttle plate within the bypassing fluid passageway to selectively open and close the bypassing fluid passageway; and
fluidly communicating EGR fluid flow through at least one of the modulating fluid passageway and the bypassing fluid passageway.
13. The method of claim 12 further comprising actuating the rotation of the modulating throttle plate and the bypassing throttle plate with at least one actuator.
14. The method of claim 12 further comprising fluidly communicating EGR fluid through the modulating fluid passageway to an EGR cooler when the modulating throttle plate is at least partially open.
15. The method of claim 12 further comprising fluidly communicating EGR fluid through the bypassing fluid passageway to bypass an EGR cooler when the bypassing throttle plate is at least partially open.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A compound selected from the group consisting of:
2. The compound of claim 1, wherein said compound is
3. The compound of claim 1, wherein said compound is
4. The compound of claim 1, wherein said compound is
5. The compound of claim 1, wherein said compound is
6. The compound of claim 1, wherein said compound is
7. The compound of claim 1, wherein said compound is
8. The compound of claim 1, wherein said compound is
9. An organic light emitting device, comprising:
an anode;
a cathode; and
an emissive layer, wherein the emissive layer comprises a compound selected from the group consisting of:
10. The organic light emitting device of claim 9, wherein said compound is
11. The organic light emitting device of claim 9, wherein said compound is
12. The organic light emitting device of claim 9, wherein said compound is
13. The organic light emitting device of claim 9, wherein said compound is
14. The organic light emitting device of claim 9, wherein said compound is
15. The organic light emitting device of claim 9, wherein said compound is
16. The organic light emitting device of claim 9, wherein said compound is
17. A formulation comprising a compound selected from the group consisting of: