Patent ID: 8881695
Filing Date: 2014-11-11
Classification: F02B

Abstract:
1. A variable compression ratio internal combustion engine comprising: a variable compression ratio mechanism configured to vary an engine compression ratio according to a rotational position of a first control shaft; an actuator configured to vary and maintain the rotational position of the first control shaft; and a linking mechanism linking the actuator to the first control shaft, the linking mechanism including a second control shaft and a lever, the second control shaft being selectively turned by the actuator and disposed parallel to the first control shaft, the lever linking the second control shaft to the first control shaft such that transference of vibration of the first control shaft to the second control shaft is suppressed by the first control shaft being pivotally linked to a first end of the lever by a first linking pin coupled to a distal end of a first arm that extends outward in a radial direction from the first control shaft, and the second control shaft being pivotally linked to a second end of the lever by a second linking pin coupled to a distal end of a second arm that extends outward in a radial direction from the second control shaft.