公开(公告)号：US3796939A

公开(公告)日：1974-03-12

申请号：US3796939D

申请日：1972-12-04

Applicant: ASS ENG LTD

Inventor： NODDINGS J ,  RAGGI L ,  PARKER D

IPC: G05D3/12 ,  F01L1/344 ,  F01L1/356 ,  F02D41/34 ,  F16H35/02 ,  G05D3/18 ,  G05B11/28 ,  F01L1/34

CPC classification number: F02D41/009 ,  F01L1/34413 ,  F01L1/356 ,  F01L2820/035 ,  G05D3/18

Abstract: A cam is capable of angular movement on a cam shaft. A disc eccentrically mounted on the shaft is driven from the shaft via a pin connection and drives the cam by a similar connection. The degree of eccentricity of the disc, which is adjustable, determines the acceleration and deceleration given to the cam as it rotates. There is disclosed an electro-mechanical servo system, responsive to the speed of an engine incorporating the cam and cam shaft, for controlling the eccentricity of the disc in dependence on the speed. Also disclosed is an electronic servo system for the same purpose.