REMOTE ELECTROHYDRAULIC DRIVE FOR INTERNAL COMBUSTION ENGINE Russian patent published in 2012 - IPC F02D1/12 F15B9/03 

FIELD: engines and pumps.

SUBSTANCE: drive includes the main control channels made in the form of logic unit connected to the main electrohydraulic distributor; spare channels; at least one of spare channels is made in the form of pushbutton contactor; spare power source, spare electrohydraulic distributor, OR logic element and storage unit with interlocking AND logic elements. Drive is provided with a channel protecting against chain interruption of setting device and transmitter of feedback, which contains in-series connected AND logic element and storage unit. Outputs of setting device and transmitter of feedback are parallel connected to inputs of AND element of the protection channel. Output of AND element is connected to direct inputs of interlocking AND elements of the main control channels. Output of storage unit is connected to alarm system. Reset input of storage unit is connected to spare electric power source by means of a discrete command cancellation element. Hydraulic actuator is installed immediately on the engine and connected through stiff kinematic connection to the engine speed control element, and through flexible kinematic feedback to electric feedback sensor installed outside the engine. Flexible kinematic feedback is made in the form of a rope arranged inside flexible guide casing fixed with its ends on the engine in installation place of the actuator and outside the engine; in installation place of feedback sensor. Each of the main control channels in the logic unit is equipped with automatic corrector of actuator adjustment, which contains in-series connected storage unit, AND logic element and time delay unit; at that, output of comparison element in each channel is connected in the corrector to recording input of storage unit and to inverting input of AND element, and parallel with output of AND element of the corrector through OR element to input of the corresponding interlocking AND element, and output of AND element of corrector is connected in corrector through the time delay unit to reset input of storage unit; at that, time delay value corresponds to adjustment of actuator by the value that is higher than the value of dead zone of the main channel, and can be adjusted.

EFFECT: invention allows improving the adjustment accuracy of remote electrohydraulic drive and providing accurate positioning in the space of the object on which an internal combustion engine is installed.

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