Compressor Control via Slope and Temperature Compensation
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Solution Overview
Problem
Conventional compressor control systems fail to optimize air conditioning performance and power performance, particularly when a vehicle climbs a hill, leading to deteriorated performance and increased fuel consumption.
Innovation Solution
A compressor control apparatus and method that detects vehicle speed, engine speed, and accelerator pedal location, using these inputs to determine oscillation and passing acceleration conditions, and adjusts the compressor's operation rate based on slope way and air temperature compensation constants, ensuring optimal performance during hill climbing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the compressor operation rate is increased to improve air conditioning performance during hill climbing, then the air conditioning performance is improved, but the power performance deteriorates and fuel consumption increases
Solution Approach 1:
The compressor control system dynamically adjusts the compressor operation rate based on real-time detection of vehicle speed, engine speed, accelerator pedal location, and slope way measurement values. The controller selectively applies different constants (basic operation rate constant, slope way constant, air temperature compensation constant) according to the detected running state, enabling the system to optimize compressor operation for both air conditioning performance and power performance under varying conditions including hill climbing.
2Reliability
If the compressor operation rate is increased to improve air conditioning performance, then the air conditioning performance is improved, but the fuel consumption increases
Solution Approach 1:
The system dynamically adjusts compressor operation rate based on detected vehicle running state parameters. By selectively applying the basic operation rate constant, slope way constant, and air temperature compensation constant according to real-time conditions, the system optimizes compressor operation to maintain air conditioning performance while minimizing unnecessary energy consumption during various driving scenarios including hill climbing.
Solution Approach 2:
The control system changes operational parameters (compressor operation rate) based on detected running state conditions. The controller selectively applies different constants to adjust the compressor operation rate according to vehicle speed, engine speed, accelerator pedal location, and slope way measurement values, thereby optimizing the balance between air conditioning performance and fuel consumption.
3Device complexity
If conventional compressor control is used regardless of running state, then the control system is simple, but the air conditioning performance deteriorates during hill climbing
Solution Approach 1:
The control system dynamically adjusts compressor operation based on detected vehicle running state. The controller receives input signals for vehicle speed, engine speed, accelerator pedal location, and slope way measurement values, then selectively applies appropriate constants to determine the optimal compressor operation rate, ensuring reliable air conditioning performance during hill climbing and other varying driving conditions.
Solution Approach 2:
The control system uses feedback from detected running state parameters (vehicle speed, engine speed, accelerator pedal location, slope way measurement values) to adjust compressor operation rate. The controller selectively applies basic operation rate constant, slope way constant, and air temperature compensation constant based on the detected conditions, creating a closed-loop control system that maintains optimal air conditioning performance.
Data Source
AI summary
A compressor control apparatus may include a data detector detecting status data including at least one of vehicle speed, engine speed, accelerator pedal location value, and slope way measurement value; and controller that determines whether engine speed and accelerator pedal location value of the status data satisfy oscillation acceleration entering condition, if the vehicle speed exists in predetermined range and that sets basic operation rate of compressor according to the engine speed and the accelerator pedal location value, if engine speed and accelerator pedal location value of the status data satisfy oscillation acceleration entering condition and that generates final operation rate of the compressor using the basic operation rate, slope way constant according to the slope way measurement value, and air temperature compensation constant according to air temperature and that controls operation of the compressor based on the final operation rate.