Abstract: Exemplary embodiments relate to controlling a swing body of construction equipment. Disclosed methods may include selecting a representative signal vs. speed curve, receiving an operating signal value from the operating input device, obtaining a reference speed value by applying said operating signal value to the selected curve, transmitting a command for rotational speed equivalent to said reference speed to the swing motor making the swing body rotate, obtaining rotational speed of said motor, determining whether a value obtained by subtracting rotational speed from reference speed exceeds the maximum permissible errors, obtaining a new signal vs. speed curve equivalent to rotational speed when a value obtained by subtracting rotational speed from reference speed exceeds the maximum permissible errors, obtaining a new reference speed value from an operating signal value using said new curve, and transmitting a new command for rotational speed equivalent to said new reference speed to said motor.

Abstract: The present disclosure relates to a method and an apparatus for controlling an engine of a wheel loader, and the apparatus includes: a sensor unit, configured to sense vehicle information and working machine information; a vehicle control unit configured to select a working condition according to a priority of the vehicle information and the working machine information, select an engine mode corresponding to the selected working condition, and output an engine mode signal representing the selected engine mode; and an engine control unit configured to control the engine output according to the engine mode signal output from the vehicle control unit. Accordingly, the present disclosure provides the method and the apparatus for controlling an engine according to a working condition of a wheel loader, thereby smoothly maintaining performance of equipment without requiring a separate manipulation by a worker, and thus achieving an effect of improving fuel efficiency.

Abstract: The present disclosure provides a bed for use with a turning center assembled with a main shaft housing in which a work piece is chucked, a turret and a tool table configured to process the work piece by a tool, and a transfer apparatus configured to transfer the turret and the tool table. The bed includes: a rib including a plurality of rib elements, in which the rib element includes a first rib element positioned at a lower portion of the bed where the main shaft housing is assembled, and a second rib element positioned at a lower portion of the bed where the transfer apparatus is assembled.

Abstract: An exemplary embodiment suggested in the present disclosure relates to an apparatus and a method of controlling a work machine of a work vehicle. The apparatus for controlling a work machine of a work vehicle suggested in the present disclosure measures a speed of a work vehicle, converts an input signal of a joystick into an output current for controlling a proportional valve (P/V) for operating a work machine (for example, a boom and a bucket), compares the speed of the work vehicle with a reference speed, and advances or delays an end time point or an operation time point of the work machine, thereby controlling an impact applied to the work vehicle.

Abstract: According to the present disclosure, there is provided a system for providing information about fuel efficiency of construction machinery, including: a TMS controller obtaining information about reference fuel efficiency through a communication network from a server, and providing the information about the reference fuel efficiency as display information; and an equipment controller calculating information about current fuel efficiency by analyzing operations of constituent elements of the construction machinery.

Abstract: The present disclosure relates to a hydraulic system for a construction machine which uses an electric hydraulic pump, and more particularly, to a hydraulic system including an emergency control unit for temporarily driving the construction machine when an electronic control unit controlling the electric hydraulic pumps fails to operate.

Abstract: The present disclosure relates to an emergency stop method for hybrid construction equipment and a brake control device, and more particularly, to an emergency stop method for hybrid construction equipment and a brake control device, which may confirm a failure occurrence location of the hybrid construction equipment, absorb inertial energy of the swing body using several functions for each generated failure location so as to stably stop the swing body in an emergency manner, and when the failure occurs in the hybrid construction equipment, create the brake pattern by using the swing speed or the front information, control a brake of the swing body by controlling a voltage control valve or a hydraulic valve in accordance with the created brake pattern, such that a user may smoothly stop the swing body in accordance with a desired stop speed profile.

Abstract: The present disclosure relates to a method for controlling regeneration of diesel particulate filter in construction machinery. The regeneration controlling method for the diesel particulate filter of construction machinery according to the present disclosure includes: a first active generation operation of actively regenerating a diesel particulate filter (DPF) according to a predetermined first active regeneration schedule when a quantity of soot inside the DPF within is a predetermined allowance section; and a second active regeneration operation of actively regenerating the diesel particulate filter according to a second active regeneration schedule, which is different from the first active regeneration schedule, according to the quantity of soot when the quantity of soot exceeds the allowance section.

Abstract: The present disclosure relates to a system and method of controlling a vehicle of construction equipment, which calculate a target engine torque from compensation torque information using torque information generated in a hydraulic pump and an engine speed error and transmit the calculated target engine torque, thereby more stably performing engine control while responding to a rapid load variation of the hydraulic pump.

Abstract: The present disclosure relates to a method for controlling an exhaust gas recirculation apparatus for heavy construction equipment, and more particularly, to a method for controlling an exhaust gas recirculation apparatus for heavy construction equipment, capable of controlling exhaust gas at an appropriate pressure at an appropriate step when making exhaust gas discharged from an engine flow into the engine together with fresh gas.

Abstract: The present disclosure relates to a tool carrier for an automatic tool changer. A tool carrier for an automatic tool changer according to the present disclosure includes: a base plate at which a center shaft is installed; a carrier unit installed at the center shaft to turn around the center shaft; a rotating pocket unit installed at the carrier unit to rotate and having a pin installed to protrude outward; a first cam block installed at the base plate and configured to perform a cam action with the pin to allow the pocket unit to rotate when the carrier unit turns from an initial position to the target position; and a second cam block installed at the base plate and configured to perform a cam action with the pin to allow the pocket unit to rotate when the carrier unit turns from the target position to the initial position.

Abstract: The present disclosure relates to an exhaust gas after-treatment apparatus and an exhaust gas after-treatment method including a selective catalytic reduction (SCR) process, and more particularly, to an exhaust gas after-treatment apparatus having improved durability and an exhaust gas after-treatment method, which selectively determine to operate a selective catalyst reducing part and an ammonia oxidation catalyst (AOC) part on the basis of a generated amount and a rate of change of a nitrogen compound (NOx) in exhaust gas.

Abstract: A method of controlling a flow rate of an attachment for construction equipment of the present disclosure, in which an engine and a pump are connected to a control device to which various control information according to equipment characteristics, user setting information from an instrument panel, engine rpm adjustment information through an engine control dial, or the like is inputted, and an attachment is connected to the pump so as to perform specific work, includes selecting, on the instrument panel, an attachment to perform work and an optimum engine rpm according to the attachment; adjusting the flow rate by controlling an angle of a swash plate of the pump; and adjusting additionally a supply flow rate of the attachment by resetting an engine rpm when adjustment to the flow rate is necessary while performing the attachment work.

Abstract: An integrated control apparatus for an engine system including an engine, a hydraulic pump driven by the engine, a control valve for controlling hydraulic oil discharged from the pump and a hydraulic actuator operated by the oil from the control valve. The apparatus includes a power mode determiner calculating an auto mode change index as a function of a first state value representing a work load of the pump and a second state value representing a work speed required by an operator to determine whether a current power mode of the pump is to be changed, a pump power determiner determining a power mode of the pump based on a result of whether the current power mode of the pump is to be changed, and an engine speed determiner determining an engine speed based on the result of whether the current power mode of the pump is to be changed.

Abstract: An active regeneration control device for a diesel particulate filter (DPF) according to the present disclosure includes: an active regeneration determining unit judging an active regeneration time of the (DPF); an active regeneration signal generating unit generating an active regeneration signal according to the decision of the active regeneration determining unit; and an active regeneration inducing unit. The active regeneration inducing unit induces the active regeneration when the active regeneration is not performed after the active regeneration signal is generated.

Abstract: The present disclosure relates to a cylinder having an inner wall formed with fine uneven patterns to improve durability. The fine uneven patterns according to the present disclosure increases oil film pressure between a piston ring and an inner wall of the cylinder, and smoothly supplies engine oil to where the engine oil is insufficient, thereby reducing abrasion between the piston ring and the inner wall of the cylinder.

Abstract: The present disclosure relates to a tool carrier unit of a tool magazine. The tool carrier unit of a tool magazine according to the present invention includes: a body frame installed across a first tool magazine and a second tool magazine; a clamping unit disposed at one side of the body frame and configured to clamp a tool accommodated in any one of the first tool magazine and the second tool magazine; an LM unit (liner motion unit) disposed at one side of the body frame and configured to guide a movement of the clamping unit; an actuator disposed at one side of the body frame and configured to move the clamping unit; and an unclamping unit disposed at the body frame and configured to unclamp the tool when the clamping unit reaches the first tool magazine or the second tool magazine.

Abstract: Disclosed is a combustion chamber of a diesel engine provided with a bowl having a concave shape so that fuel injected from an injector creates a swirl or squishing flow to be mixed with air, and the combustion chamber of the diesel engine includes: a pip protruding from a center of a lower surface of the bowl toward the injector; a lip part protruding from a side surface of the bowl toward the injector; and a main combustion chamber provided on a lower portion of the lip part and a sub combustion chamber provided on an upper portion of the lip part, with the lip part interposed therebetween, in which a surface of the sub combustion chamber is formed in a flat shape or a concave bowl shape to have a depth of the sub combustion chamber of 0.8 mm or lower.

Abstract: The present disclosure relates to a hydraulic system for a construction machine having an electronic hydraulic pump, and more particularly, to a hydraulic system which temporarily drives the construction machine when an operation of an electronic control unit controlling an electronic hydraulic pump is abnormal, particularly, when the electronic control unit is not able to perform a control because an operative amount of a joystick input to the electronic control unit is not normally transmitted to the electronic control unit.