TRAILER-TRAIN ANTILOCKING BRAKE SYSTEM Russian patent published in 1995 - IPC

FIELD: transport. SUBSTANCE: trailer-train antilocking brake system has antilocking brake systems of truck-tractor and trailer, each including electronic control units and switching unit with switches connecting electronic control units to supply source by separate circuits through first supply input; it has also delay unit connected by control input with engine starter switch, switch control circuits being supplied from supply source through ignition switch (instrument switch); other supply input and information output of switching unit are connected with Failure warning lamp. Each electronic control unit has two control parts. Connected to input of each control part is angular velocity pickup of corresponding wheel, and to output, control input of corresponding wheel brake drive pressure modulator; outputs of protective parts installed in one control unit are connected to control input of switch in circuit of indicated unit. Moreover, connected to inputs and outputs of each electronic control unit are pickups and pressure modulators belonging to wheels of one axle. CHECK switch is introduced into brake system of trailer-train. Placed between supply source and electronic switching units of truck-tractor and trailer systems is switch whose control input is connected to truck-tractor instrument switch. Delay unit in electronic switching units of each system has additional circuit to connect control input of indicated unit to engine starter switch or to CHECK switch in truck-tractor system and to current supply circuit of electronic control units in trailer system. Antilocking brake system of trailer-train has additional information-and- switching unit which has switch, information signal shaper and two current sensors. Switch is installed before switching unit of trailer system in current supply circuit of electronic control units of this system and is connected by control input to engine starter switch and to CHECK switch in trailer-train antilocking brake system. Information signal shaper is connected by control inputs to information inputs of current sensors, one of which is installed before trailer system switching unit in supply circuit of switch control circuit of indicated switching unit; other current sensor is installed between truck-tractor stop light switch and trailer stop light lamp in stop light circuit. Output of information signal shaper is connected with FAILURE information output of trailer system switching unit and is connected to signal lamp indicating condition and mode of operation of trailer antilocking brake system. EFFECT: enhanced reliability of operation. 5 dwg