March 14, 2006

A requested volume flow ratio calculated based on a requested torque, an amount of two times a spit-back gas amount at the valve overlap time calculated based on a requested residual gas rate, and a spit-back gas amount of the time when an intake valve is closed are added together, to set a requested valve passing gas amount of the intake valve, thereby determining a target operating characteristic of the intake valve based on the requested valve passing gas amount.

9

March 14, 2006

10/716,532

November 20, 2003

701/103   123/347

B60T   7/12   (20060101)  

Dec 02, 2002 [JP] 2002-350276 Dec 02, 2002 [JP] 2002-350277

123/316   123/347   123/348  

7386390 - Variable valve control apparatus for internal combustion engine and method thereof - Owned by Hitachi, Ltd. (Tokyo,JP) A requested volume flow ratio calculated based on a requested torque, an amount of two times a spit-back gas amount at the valve overlap time calculated based on a requested residual gas rate, and a spit-back gas amount of the time when an intake valve is closed are added together, to set a requested valve passing gas amount of the intake valve, thereby determining a target operating characteristic of the intake valve based on the requested valve passing gas amount.