Abstract: A call sharing system for a construction work includes an administrator terminal configured to display a working drawing of a construction site on an administrator screen and to transmit a work request signal including a work area designated on the working drawing, a plurality of worker terminals configured to display the working drawing on each worker screen, each worker terminal being configured to receive the work request signal and to transmit a response signal in response to the work request signal, and a server configured to transmit and receive data between the administrator terminal and the worker terminals and to select the worker terminals for receiving the work request signal according to a work detail.

Abstract: In a method of removing particles in an injector of a diesel engine, a stop of the diesel engine may be recognized. An injection signal may be inputted into the injector of the stopped diesel engine. A control valve of the injector may be moved in a low-pressure passage by the injection signal to remove the particles accumulated on an inner wall of the low-pressure passage. Thus, a malfunction of the control valve caused by the particles may be previously prevented.

Abstract: Disclosed is a lamp module for an industrial vehicle. The lamp module for an industrial vehicle according to an embodiment of the present utility model can be installed inside a counterweight, unlike the conventional method of embedding in the counterweight, thereby improving workability and assemblability of the operator and improving visibility.

Abstract: An exhaust gas after-treatment system includes a first reactor installed in an exhaust flow path, a second reactor disposed at a downstream side from the first reactor, a first reducing agent injection unit and a second reducing agent injection unit configured to respectively inject a reducing agent toward the exhaust gas to be introduced into the first reactor and the second reactor, a first temperature sensor and a second temperature sensor configured to respectively measure a temperature of the exhaust gas to be introduced into the first reactor and the second reactor, and a control device configured to control whether to inject the reducing agent from the first and second reducing agent injection units and the amount of reducing agent to be injected on the basis of temperature information provided by the first and second temperature sensors.