ISG control system for construction machine and ISG control method for construction machine

An ISG (Idle Stop and Go) control system for a construction machine, comprising:

• a surrounding environment determinator configured to determine surrounding environment of the construction machine;
• and
• a vehicle controller configured to determine whether the construction machine is in a working state or a traveling state based on a determination result from the surrounding environment determinator,
• wherein the vehicle controller controls an engine based on a preset work ISG condition when it is determined that the construction machine is in the working state,
• wherein the vehicle controller controls the engine based on a preset travel ISG condition when it is determined that the construction machine is in the traveling state, and
• wherein the vehicle controller determines that an engine auto-stop entry condition of the work ISG condition is satisfied under conditions that the construction machine is in the working state,
• an ISG cut-off switch of the construction machine is in an off state,
• the engine is maintained at 800 rpm or more for at least 10 seconds,
• a temperature of an engine coolant of the construction machine is greater than 60 degrees Celsius,
• a battery charge amount of the construction machine is greater than 75%,
• a battery temperature of the construction machinery is greater than 0 degrees Celsius and less than 55 degrees Celsius, and
• a temperature in a cab of the construction machine is greater than 15 degrees Celsius and less than 27 degrees Celsius.

A method of controlling ISG of a construction machine, the method comprising:

• determining surrounding environment of the construction machine;
• and
• determining whether the construction machine is in a working state or a traveling state based on a determination result of the surrounding environment,
• wherein the vehicle controller controls an engine based on a preset work ISG condition when it is determined that the construction machine is in the working state, and
• wherein the vehicle controller controls the engine based on a preset travel ISG condition when it is determined that the construction machine is in the traveling state,
• wherein the determining surrounding environment of the construction machine comprises photographing the surrounding environment of the construction machine and transmitting image information of the photographed surrounding environment to the vehicle controller,
• when the image information includes a lane around the construction machine, the vehicle controller determines that the construction machine is currently in the traveling state
• wherein the vehicle controller determines that an engine auto-stop entry condition of the work ISG condition is satisfied under conditions that the construction machine is in the working state,
• an ISG cut-off switch of the construction machine is in an off state,
• the engine is maintained at 800 rpm or more for at least 10 seconds,
• a temperature of an engine coolant of the construction machine is greater than 60 degrees Celsius,
• a battery charge amount of the construction machine is greater than 75%,
• a battery temperature of the construction machinery is greater than 0 degrees Celsius and less than 55 degrees Celsius, and
• a temperature in a cab of the construction machine is greater than 15 degrees Celsius and less than 27 degrees Celsius.