×

Method for controlling an engine with an EGR system

  • US 6,820,600 B1
  • Filed: 10/15/2003
  • Issued: 11/23/2004
  • Est. Priority Date: 09/19/2002
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method for controlling an internal combustion engine, the engine including an engine block defining a plurality of cylinders, an intake manifold for supplying air to the plurality of cylinders, a controller, and an exhaust gas recirculation (EGR) system, the EGR system introducing a metered portion of exhaust gases to the intake manifold, the controller communicating with the EGR system to control the engine, the method comprising:

  • determining an air mass flow rate through the intake manifold at a location upstream of the exhaust gas introduction;

    determining an engine speed;

    determining an intake manifold air density;

    determining an engine volumetric efficiency based on the engine speed and the intake manifold air density;

    determining an EGR flow rate based on the volumetric efficiency, the intake manifold air density, an engine displacement volume, the engine speed, and the intake manifold air mass flow rate; and

    controlling the engine based on the EGR flow rate.

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