Air induction system and assembly method for an intake manifold with a single shaft and sensor for activating air control valves
View Patent ↗The present invention utilizes a single shaft with cam-actuated control valves and one linear solenoid for control of air flow control vales in the air induction system for a V-type engine. According to various exemplary embodiments of the present invention, the single shaft and one sensor are utilized to activate all control valves. Additionally, the present invention can also be used in in-line engines. Advantageously, the present invention utilizes one moving shaft and sensor to activate all control valves on both sides of the intake manifold without restricting air flow by locating the shaft in the middle of the manifold—lower housing. Further, the control valves are not attached with screws, thus eliminating a tolerance stack-up at assembly problem. The air induction sub-system can be manufactured with metals or plastic, or any combination thereof.
1. An air induction system of an intake manifold of an internal combustion engine utilizing a single shaft and sensor to activate all air control valves comprising:
a stationary tube shaft comprising a plurality of slot openings;
one or more control valves each comprising a base with an opening and a flap connected to the base, wherein the stationary tube shaft fits within the opening of each of the one or more control valves;
a moveable center shaft disposed and configured to move linearly within the stationary tube shaft; and
a plurality of dowel pins attached to the moveable center shaft and extending through the plurality of slot openings, wherein linear motion of the moveable center shaft engages the dowel pins in an angled cam groove in the base of each of the one or more control valves to activate the one or more control valves.
2. The air induction system of claim 1 , wherein the angled cam groove comprises radii at sharp edges allowing one of the plurality of dowel pins to slide through the angled cam groove to translate linear motion from the moveable center shaft to activate the control valve.
3. The air induction system of claim 2 , wherein the radii at sharp edges are oriented accordingly to translate linear motion from the moveable center shaft to activate the one or more control valves.
4. The air induction system of claim 1 , wherein the moveable center shaft is operable to activate the one or more control valves located on both sides of the intake manifold.
5. The air induction system of claim 4 , wherein the air induction system is utilized in a ‘V’-type engine.
6. The air induction system of claim 1 , wherein the stationary tube shaft is fixed to a lower housing of the intake manifold with one or more roll pins.
7. The air induction system of claim 1 , wherein one or more control valves are manufactured with one or more of metal, plastic, and combinations thereof.
8. The air induction system of claim 7 , wherein the base and the flap are physically attached as a single unit.
9. The air induction system of claim 1 , wherein the one or more control valves are configured to restrict air flow through an intake port in the intake manifold when the moveable center shaft is in a first position and configured to allow air flow through an intake port in the intake manifold when the moveable center shaft is in a second position.
10. The air induction system of claim 1 , further comprising:
a motor configured to selectively move the moveable center shaft to a first position to engage all of the one or more control valves and to a second position to disengage all of the one or more control valves; and
a position sensor operable to determine the position of the moveable center shaft.
11. The air induction system of claim 10 , wherein the motor comprises one of a linear induction motor and a rotating motor with an arm connected to the moveable center shaft.
12. The air induction system of claim 10 , wherein the sensor comprises a Hall Effect sensor.
13. The air induction system of claim 1 , wherein the air induction system is utilized in an in-line engine.
14. The air induction system of claim 1 , wherein the one or more control valves are not attached with screws, thus eliminating a tolerance stack-up at assembly problem.