Hydraulic control device for valve trains of engine

摘要

A hydraulic control device for valve trains (VT) of an engine (E) having cylinders which are optionally deactivated by applying oil pressure to the valve train (VT) so as to suspend the operations of associated intake and exhaust valves (IV, EV), the hydraulic control device comprising a plurality of rocker shafts (31, 31') which are arranged in line, and each of which is provided with hydraulic passages (59a, 59b) therein for applying oil pressure to each of the valve trains (VT) so as to activate and deactivate the cylinders, a plurality of sets of hydraulic circuits (34, 35; 34', 35'), which are provided to the rocker shafts (31, 31'), respectively, for applying oil pressure to each of the rocker shafts (31, 31'), and oil pressure measuring sections (S1, S1') provided to the hydraulic circuits (35, 35'), respectively, for measuring oil pressure in each of the hydraulic circuits (35, 35').