Method of correcting valve timing in engine having electromechanical valve actuation

A system comprising:

• an electrically actuated valve of an internal combustion engine;
• a computer storage medium having instructions encoded therein for controlling said electrically actuated valve, said medium comprising:
• code for determining a desired valve condition for a cylinder cycle;
• code for determining an actual valve condition occurring during said cylinder cycle;
• code for determining an error between said desired valve condition and said actual valve condition for said cylinder cycle;
• code for adjusting a desired valve condition of a subsequent cylinder cycle based on said determined error;
• and
• code for storing said error as a function of engine coolant temperature.

A system comprising:

• a computer storage medium having instructions encoded therein for controlling electric valve actuation of an internal combustion engine, said medium comprising:
• code for determining a desired valve condition;
• code for reading a sensor measuring said valve conditions;
• code for determining an error between said desired valve condition and said measured valve condition;
• and
• code for storing said determined error in keep alive memory as a function of at least engine coolant temperature, wherein said determined error is used to adjust said desired valve condition.

A system comprising:

• an electrically actuated valve of an internal combustion engine;
• a computer storage medium having instructions encoded therein for controlling said electrically actuated valve, said medium comprising:
• code for determining a desired valve opening and closing timing for a cylinder cycle;
• code for determining an actual valve opening and closing timing occurring during said cylinder cycle;
• code for determining a first error between said desired valve opening timing and said actual valve opening timing and a second error between said desired valve closing timing and said actual valve closing timing for said cylinder cycle;
• code for adjusting a desired valve opening timing and a desired valve closing timing of a subsequent cylinder cycle based on said first and second determined errors;
• and
• storing said first error as a function of desired valve opening timing and temperature, and storing said second error as a function of desired valve closing timing and temperature.