Patent ID: 6994069

Claim:
A hydraulic control device for valve trains of an engine installed in a hybrid vehicle which comprises a motor in addition to the engine as power sources, and in which the power of at least one of the engine and the motor is transmitted to an output shaft via a transmission for driving the hybrid vehicle, and the engine having cylinders which are optionally deactivated by applying oil pressure to the valve trains so as to suspend the operations of associated intake and exhaust valves, the hydraulic control device comprising: a plurality of rocker shafts which are arranged in line, and each of which is provided with hydraulic passages therein for applying oil pressure to each of the valve trains so as to activate and deactivate the cylinders; and oil pressure control sections which are connected to the rocker shafts, respectively, for applying oil pressure to each of the rocker shafts; wherein the oil pressure control sections are adapted such that when any of the oil pressure control sections fail, the remaining oil pressure control sections apply oil pressure to the rocker shafts corresponding to the failed oil pressure control sections.