×

Method and apparatus for indicating air filter maintenance is required

  • US 20050240338A1
  • Filed: 04/23/2004
  • Published: 10/27/2005
  • Est. Priority Date: 04/23/2004
  • Status: Active Grant
First Claim
Patent Images

1. A system for indicating required maintenance of an air filter used with an internal combustion engine, such engine including a throttle plate for adjusting an amount of air flow passing into cylinders of the engine, such system comprising:

  • a throttle plate position sensor;

    a processor responsive to a throttle plate position signal produced by the throttle plate sensor, for determining, as a function of such throttle plate position signal, whether the air filter is in need of maintenance.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×