| 摘要 |
PROBLEM TO BE SOLVED: To provide a variable cam timing system to perform the control based on the switching value. SOLUTION: The method according to the present invention to control the variable cam timing system for an internal combustion engine, works with a process to determine the measuring angle phase between a cam shaft and a crank shaft using measuring pulses, a process to determine the switching value equivalent to the difference between the set point and the measuring angle phase, and a process to control an on-off solenoid on the basis of the switching value. If the switching value is larger than zero, the on-off solenoid is turned on to allow the fluid to flow in the first direction between a plurality of chambers, and if smaller than zero, the solenoid is turned off to allow the fluid to flow in the second direction opposite the first direction between the chambers. COPYRIGHT: (C)2006,JPO&NCIPI
|
