Work Vehicle Radiator Cleaning via Temperature Feedback
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Solution Overview
Problem
Agricultural vehicle radiators often accumulate contaminants, leading to reduced thermal exchange and overheating due to inefficient or irregular cleaning operations, which existing systems fail to address effectively.
Innovation Solution
A control system for work vehicles that includes a variable-pitch fan and temperature sensors to automatically adjust cleaning intervals based on detected temperatures, ensuring efficient and safe cleaning operations without risking overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fan performs forced cleaning airflow regularly at predetermined time intervals, then the radiator is cleaned to remove contaminants, but the cleaning may occur too frequently or not frequently enough, reducing efficiency
Solution Approach 1:
The control system uses temperature sensors to continuously monitor the temperature of cooled parts and radiator surface temperature to determine when cleaning is actually needed. This feedback mechanism replaces fixed time-interval cleaning with condition-based cleaning, ensuring cleaning occurs only when thermal exchange efficiency degrades below acceptable thresholds, thereby optimizing both reliability and time efficiency.
Solution Approach 2:
The system enables the radiator cleaning process to be automatically controlled by the vehicle's own temperature monitoring system. The control unit autonomously activates the fan for cleaning operations when temperature thresholds are exceeded, without requiring external scheduling or manual intervention, making the cleaning process self-regulating based on actual thermal conditions.
2Reliability
If the fan generates forced airflow for extended cleaning operations, then thorough cleaning is achieved, but the heat exchange efficiency of the radiator is significantly affected, risking overheating of vehicle components
Solution Approach 1:
The control system implements periodic cleaning cycles with alternating periods of forced airflow (cleaning mode) and normal cooling airflow (cooling mode). The fan is activated for cleaning only when temperature thresholds are exceeded, and deactivated when temperature returns to acceptable levels. This periodic alternation ensures thorough cleaning while preventing extended cleaning operations that would cause overheating.
Solution Approach 2:
The system dynamically adjusts the fan operation mode between cleaning and cooling based on real-time temperature feedback. The control unit monitors temperature continuously and transitions the fan between cleaning airflow generation and normal cooling airflow based on thermal conditions, making the cleaning operation duration and intensity adaptive rather than fixed, thereby balancing cleaning thoroughness with overheating prevention.
3Ease of operation
If manual control of cleaning operations is used, then user flexibility is maintained, but the risk of improper cleaning frequency and duration control increases
Solution Approach 1:
The control system incorporates temperature sensors that continuously monitor thermal conditions and provide feedback to the control unit. This automated feedback loop determines the optimal timing and duration of cleaning operations based on actual radiator and component temperatures, replacing manual user judgment with objective thermal data to ensure reliable and optimized cleaning frequency and duration.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system efficiently and automatically manages radiator cleaning, preventing overheating by varying airflow direction and duration in response to temperature thresholds, thereby maintaining optimal cooling performance.
Implementation Method 1
the fan of the work vehicles may be adapted to generate and orient a forced cleaning airflow towards the radiator. The forced airflow allows cleaning of the parts of the radiator that are exposed to the contaminants
Implementation Method 2
the tubes are impinged externally by an air flow due, by way of example, to the relative motion between the work vehicle and the air surrounding it, or the action of a fan positioned in proximity to the radiator(s). The airflow absorbs heat from the coolant flowing inside the tubes
Data Source
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AI summary
Control system for a work vehicle (10; 10') comprising a radiator (20), a fan (21) for generating an air flow directed towards the radiator (20) to perform a cleaning operation thereof, a temperature sensor (22; 22', 23') adapted to detect a temperature (T) of a portion of the work vehicle (10). The control system (1; 1') comprises a control unit (2) operatively connected to the temperature sensor (22; 22', 23') and the fan (21). The control unit (2) is configured to command the fan (21) to perform the cleaning operation for a cleaning time interval, the duration of which is dependent on the detected temperature (T).