Variable intake system monitoring apparatus
First Claim
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1. A variable intake system monitoring apparatus, comprising:
- a variable intake valve shaft comprising a plurality of flaps;
a potentiometer that measures the pivot amount of the variable intake valve shaft;
a pneumatic actuator that pivots the variable intake valve shaft;
a vacuum line connecting a surge tank and the pneumatic actuator to provide operational pressure of the pneumatic actuator;
a Manifold Absolute Pressure (MAP) sensor positioned proximate to the surge tank connected with the vacuum hose;
a Throttle Position Sensor (TPS) located at a throttle body; and
a controller that detects the operation state of the variable intake valve shaft by receiving signals from the potentiometer, MAP sensor, and TPS.
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Abstract
Variable intake systems are provided that include a variable intake valve shaft, potentiometer, pneumatic actuator, Manifold Absolute Pressure sensor, Throttle Position Sensor and controller. Preferred systems of the invention can monitor whether valves of a variable intake system are properly working, thereby stabilizing the operation of the variable intake system in a simplified manner and at low costs.
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Citations
6 Claims
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1. A variable intake system monitoring apparatus, comprising:
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a variable intake valve shaft comprising a plurality of flaps;
a potentiometer that measures the pivot amount of the variable intake valve shaft;
a pneumatic actuator that pivots the variable intake valve shaft;
a vacuum line connecting a surge tank and the pneumatic actuator to provide operational pressure of the pneumatic actuator;
a Manifold Absolute Pressure (MAP) sensor positioned proximate to the surge tank connected with the vacuum hose;
a Throttle Position Sensor (TPS) located at a throttle body; and
a controller that detects the operation state of the variable intake valve shaft by receiving signals from the potentiometer, MAP sensor, and TPS. - View Dependent Claims (2, 3, 5)
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4. A variable intake system monitoring apparatus, comprising:
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a variable intake valve shaft comprising a plurality of flaps;
a potentiometer that can measure the pivot amount of the variable intake valve shaft;
a pneumatic actuator that can pivot the variable intake valve shaft;
a Manifold Absolute Pressure sensor;
a Throttle Position Sensor located at a throttle body; and
a controller that detects the operation state of the variable intake valve shaft by input from one or more of the potentiometer, Manifold Absolute Pressure sensor, or Throttle Position Sensor. - View Dependent Claims (6)
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Specification