×

CONTROLLER FOR INTERNAL COMBUSTION ENGINE

  • US 20200132007A1
  • Filed: 10/22/2019
  • Published: 04/30/2020
  • Est. Priority Date: 10/26/2018
  • Status: Abandoned Application
First Claim
Patent Images

1. A controller for an internal combustion engine, wherein the internal combustion engine includes a fuel injection valve, a catalyst provided in an exhaust passage and capable of storing oxygen, and an air-fuel ratio sensor provided downstream of the catalyst in the exhaust passage, the controller comprising processing circuitry, whereinthe processing circuitry is configured to execute an inflow process when an oxygen storage amount of the catalyst is greater than or equal to a predetermined amount,the inflow process includes operating the fuel injection valve to cause a fluid containing oxygen and unburned fuel to flow into the catalyst,an amount of the unburned fuel is greater than or equal to an ideal amount of unburned fuel that reacts with all of the oxygen, andthe processing circuitry is configured to execute, based on a detection value of the air-fuel ratio sensor obtained during an execution of the inflow process, a deviation amount calculation process that calculates a deviation amount indication value that indicates a deviation amount of a detection value of the air-fuel ratio sensor.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×