Variable valve apparatus for internal combustion engine

A method for a variable valve apparatus for an internal combustion engine comprising a cylinder set comprising a plurality of cylinders, the variable valve apparatus comprising:

• a control shaft adapted for movement;
• a valve actuating mechanism provided for each cylinder of the cylinder set and adapted to vary a valve lift characteristic of an engine valve of each cylinder of the cylinder set in accordance with a position of the control shaft;
• and a valve lift adjusting mechanism provided for each cylinder of a first subset of the cylinder set and adapted to correct an error in adjust the valve lift characteristic of the engine valve of each cylinder of the first subset, the method comprising:
• determining a standard valve lift characteristic in accordance with the valve lift characteristic of the engine valve of each cylinder of a second subset of the cylinder set;
• correcting an error in the valve lift characteristic of the engine valve of each cylinder of the first subset in accordance with the standard valve lift characteristic;
• and
• adjusting a standard position of the control shaft in such a manner to vary the standard valve lift characteristic in accordance with a desired valve lift characteristic.