Engine Temperature Sensor Diagnostics via Energy Estimation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Diagnostic routines for engine material temperature sensors often fail to accurately assess the rationality of temperature readings, leading to potential misinterpretation of thermal dynamics and inefficient cooling processes in internal combustion engines.
Innovation Solution
A computer-implemented diagnostic module that monitors coolant flow and operational states of the engine to estimate accumulated energy, comparing this energy to thresholds to determine the rationality of temperature sensor readings, ensuring accurate temperature monitoring and timely cooling interventions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional diagnostic routines are used to monitor temperature sensors, then the system structure remains simple, but the accuracy of temperature reading assessment deteriorates
Solution Approach 1:
The patent introduces an intermediary energy estimation mechanism that mediates between the temperature sensor readings and the diagnostic assessment. Instead of directly validating temperature readings against fixed thresholds, the system estimates accumulated engine energy and uses this intermediary parameter to dynamically assess whether temperature readings are rational, thereby improving measurement precision without requiring overly complex diagnostic algorithms
Solution Approach 2:
The system implements feedback by continuously monitoring coolant flow and engine operational states to update the accumulated energy estimate, which then feeds back into the temperature reading validation process. This feedback loop allows the diagnostic routine to adapt to changing engine conditions, improving the accuracy of temperature assessment while maintaining reasonable system complexity through iterative refinement rather than complex static rules
2Reliability
If temperature sensors monitor material temperature continuously, then real-time cooling control is improved, but false alarms and missed detections increase due to irrational readings
Solution Approach 1:
The patent changes the parameter used for temperature validation from fixed absolute thresholds to dynamic thresholds based on accumulated energy estimates. By adjusting the validation criterion according to the engine's thermal state and coolant flow conditions, the system reduces false alarms and missed detections, thereby improving cooling control reliability while preserving valid temperature data through more intelligent filtering
Solution Approach 2:
The system performs preliminary estimation of accumulated energy before validating temperature readings. This preliminary action establishes an expected thermal state baseline that is used to pre-filter potentially irrational temperature readings, preventing false alarms and missed detections before they can affect cooling control decisions
3Measurement precision
If the diagnostic module monitors multiple engine parameters, then the accuracy of energy estimation is improved, but the computational load and system complexity increase
Solution Approach 1:
The patent segments the energy estimation process into discrete, manageable components based on separate monitoring of coolant flow and engine operational states. Rather than attempting to compute total engine energy from all possible parameters simultaneously, the system divides the estimation into modular contributions from individual sensors and operational modes, improving measurement precision while maintaining computational efficiency through structured processing
Data Source
AI summary
A diagnostic system for performing engine material temperature sensor diagnostics includes a coolant flow sensor configured to provide an indication of coolant flow within a coolant system; an engine state sensor configured to provide an indication of an operational state of an internal combustion engine; and a diagnostic module in communication with the coolant flow sensor and engine state sensor. The diagnostic module is configured to use the indication of coolant flow and the indication of an operational state of the internal combustion engine to estimate an amount of accumulated energy within the internal combustion engine.