Construction Machine ISG Control for Working-State Fuel Saving
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Solution Overview
Problem
Conventional ISG systems for construction machines do not consider the working state and only provide control over driving or traveling, leading to unnecessary fuel consumption during operations.
Innovation Solution
An ISG control system and method for construction machines that determine the working or traveling state and apply specific engine stop and restart conditions based on various environmental and operational parameters, including location, speed, temperature, and load conditions, to minimize fuel consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional ISG systems only control driving or traveling states, then the system complexity is reduced, but fuel consumption during working operations cannot be minimized
Solution Approach 1:
The ISG control system dynamically adapts its control strategy based on the detected operational state (traveling vs. working). The controller determines the current state using sensors and environmental data, then applies appropriate ISG control parameters for each state, enabling fuel savings during working operations without requiring a completely separate control system
Solution Approach 2:
The ISG control system is designed to handle multiple operational states (both traveling and working) using a single unified control architecture. The system universally applies ISG control across different machine states by detecting state transitions and adjusting control parameters accordingly, eliminating the need for separate control systems for different operations
2Loss of energy
If ISG control is applied during working state, then fuel consumption is reduced, but the reliability of work operation may be compromised
Solution Approach 1:
The control system continuously monitors operational parameters including hydraulic pump status, attachment position, and machine state through sensors. This feedback mechanism ensures that ISG control actions are taken only when work operations are not actively required, maintaining reliability while achieving fuel savings during idle working periods
Solution Approach 2:
The system determines the operational state in advance using environmental determinators and sensor data before applying ISG control. By preliminarily assessing whether the machine is in a working or traveling state, the system can proactively apply appropriate control strategies that ensure work reliability is maintained before fuel saving actions are executed
Data Source
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AI summary
The present disclosure relates to an ISG control system and an ISG control method for a construction machine capable of controlling ISG even in a working state of a construction machine, the ISG control system including: 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, 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.