×

Direct injection engine system and method

  • US 6,244,242 B1
  • Filed: 10/18/1999
  • Issued: 06/12/2001
  • Est. Priority Date: 10/18/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for controlling an engine during a cylinder air/fuel ratio change from a first cylinder air/fuel ratio to a second cylinder air/fuel ratio, the method comprising the steps of:

  • determining a first number of cylinders to enable to perform combustion so that the cylinder air/fuel ratio change can occur without a disturbance in engine torque; and

    enabling said first number of cylinders and changing the cylinder air/fuel from the first cylinder air/fuel ratio to the second cylinder air/fuel ratio when said number of cylinders are currently disabled.

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