COMPRESSION RATIO VARIABLE MECHANISM OF INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To provide a compression ratio variable mechanism of an internal combustion engine for highly accurately and variably controlling the compression ratio, while minimizing a specification change in an engine, without installing an angle sensor for detecting an angle position of a control shaft in an external part of an actuator. SOLUTION: An electric motor 39 is incorporated with a driving Hall IC 63 for driving and controlling rotation of a motor pinion shaft 41. The driving Hall IC 63 is used as a detecting means for detecting a rotating speed (a moving distance of the actuator) of the electric motor 39. The compression ratio is variably controlled by linear feedback control on the basis of sensor output by this driving Hall IC 63. COPYRIGHT: (C)2006,JPO&NCIPI