DEVICE FOR THE VARIABLE CONTROL OF THE VALVES OF INTERNAL COMBUSTION ENGINES, ESPECIALLY FOR THE CHOKELESS LOAD CONTROL OF FOUR-STROKE ENGINES

摘要

The invention relates to a device for the variable control of the valves of internal combustion engines, especially for the chokeless load control of four-stroke engines in which the mixture is metered by controlling the travel and opening time of the inlet valves (4a). The device consists of two camshafts (1a, 2a) rotating at the same speed, the cams of which act on suitably shaped detection units (7a, 8a) which are connected to a rocker (3a). The rocker (3a) transmits its movement to a conventional poppet valve (4a) spring-loaded in the closing direction. Characteristic features of the device are the advantageous design of such a valve drive, especially with respect to the selection of the direction of rotation of the two camshafts (1a, 2a) and the kinematic detection conditions with respect to especially favourable travel functions and the linkage of the rocker (3a) and a device for automatic valve clearance balance.