×

Cylinder and valve mode control for an engine with valves that may be deactivated

  • US 7,066,121 B2
  • Filed: 03/19/2004
  • Issued: 06/27/2006
  • Est. Priority Date: 03/19/2004
  • Status: Active Grant
First Claim
Patent Images

1. A control method for selecting valve actuating modes in a multi-valve engine having at least an electromechanically actuated valve, the method comprising:

  • determining an operating condition of said electromechanically actuated valve;

    operating the engine in at least a first and second cylinder configuration when said operating condition indicates acceptable performance of said electromechanical valve, said first configuration including engine operation where at least said valve operates and said second configuration including engine operation where at least said valve is deactivated; and

    restricting operation in said first configuration and operating the engine at least in said second configuration, when said operating condition indicates a condition of degraded performance of said electromechanical valve.

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