Active noise cancellation system

• US 20010036279A1
• Filed: 02/26/2001
• Published: 11/01/2001
• Est. Priority Date: 05/08/2000
• Status: Abandoned Application

• Current Assignee: Siemens Canada Limited (Siemens AG)
• Original Assignee: Siemens Canada Limited (Siemens AG)
• Inventors: Daly, Paul D.
• Application Number:
  US09/792,956
• Publication Number:
  US 20010036279A1
• Time in Patent Office: Days
• US Class Current: 381/71.4
• CPC Class Codes: F02M 35/125 by using active elements, e.g. speakers
• CPC Class Codes: G10K 11/1783 handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions
• CPC Class Codes: G10K 11/17883 the reference signal being derived from a machine operating condition, e.g. engine RPM or vehicle speed
• CPC Class Codes: G10K 2210/121 Rotating machines, e.g. engines, turbines, motors; Periodic or quasi-periodic signals in general
• CPC Class Codes: G10K 2210/3031 Hardware, e.g. architecture
• CPC Class Codes: G10K 2210/3039 Nonlinear, e.g. clipping, numerical truncation, thresholding or variable input and output gain

Abstract

The air induction system comprises an air intake and speaker disposed about the air intake. A control unit is in communication with the speaker. At least one receiver permits communication between the control unit and at least one powertrain input. An engine computer may communicate the powertrain input to the receiver and prevent such communication at a predetermined threshold based on engine load.

Claims

1. An air induction system comprising:

an air intake;

a speaker disposed about said air intake;

a control unit in communication with said speaker; and

a non-hardwired receiver in communication with said control unit.

2. The air induction system of

claim 1

wherein said non-hardwired receiver receives at least one powertrain input.

3. The air induction system of

claim 2

wherein said at least one powertrain input is crank position data.

4. The air induction system of

claim 2

wherein said at least one powertrain input is fuel injection data.

5. The air induction system of

claim 2

wherein said at least one powertrain input is ignition data.

6. The air induction system of

claim 1

further including a sensor monitoring said at least one powertrain input and in communication with said non-hardwired receiver.

7. The air induction system of

claim 6

farther including a transmitter in communication with said sensor and in communication with said non-hardwired receiver.

8. The air induction system of

claim 1

further including a microphone in communication with said control unit.

9. The air induction system of

claim 2

further including an engine computer communicating said at least one powertrain input to said non-hardwired receiver.

10. The air induction system of

claim 9

wherein said engine computer communicates said at least one powertrain input at a predetermined threshold.

11. An air induction system comprising

an air intake;

a speaker disposed about said air intake;

a control unit in communication with said speaker; and

an engine computer in communication with said control unit and at least one powertrain input, communicating said at least one powertrain input to said control unit at a predetermined threshold.

12. The air induction system of

claim 11

wherein said predetermined threshold is based on engine load.

13. The air induction system of

claim 11

wherein said at least one powertrain input is engine crank position data.

14. The air induction system of

claim 11

wherein said at least one powertrain input is fuel injection data.

15. The air induction system of

claim 11

wherein said at least one powertrain input is ignition data.

16. The air induction system of

claim 11

further including at least one non-hardwired receiver in communication with said control unit wherein said non-hardwired receiver receives said at least one powertrain input.

17. An air induction system comprising:

an air intake;

a speaker disposed about said air intake;

a control unit in communication with said speaker;

at least one non-hardwired receiver in communication with said control unit and in reception of at least one powertrain input; and

an engine computer communicating said at least one powertrain input to said non-hardwired receiver at a predetermined threshold based on engine load.

18. The air induction system of

claim 17

wherein said at least one powertrain input is engine crank data.

19. The air induction system of

claim 17

wherein said at least one powertrain input is fuel injection data.

20. The air induction system of

claim 17

wherein said at least one powertrain input is ignition data.