Gas Quantity Detection via Exhaust Temperature Disturbance
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Solution Overview
Problem
Current methods do not allow for direct monitoring or equalization of gas quantity supplied to the antechambers of internal combustion engines, making it difficult to assess the functional state of individual gas supply devices without measuring the gas quantity.
Innovation Solution
The method involves comparing changes in exhaust gas temperature resulting from targeted disturbances to determine the gas quantity supplied, using a theoretical model or measurements to relate exhaust gas temperature to gas quantity, and adjusting the gas supply via control units to maintain equalization across antechambers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If direct measurement of gas quantity is implemented, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent uses exhaust gas temperature as an intermediary parameter to indirectly determine the quantity of gas supplied to the antechamber. Instead of directly measuring gas quantity, the system measures exhaust gas temperature changes resulting from disturbances in gas supply, which correlates with the gas quantity. This intermediary approach avoids complex direct measurement while maintaining sufficient measurement precision for monitoring and equalization purposes.
2Reliability
If gas supply monitoring is implemented for each antechamber, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent employs a universal monitoring approach where exhaust gas temperature measurements from the combustion chamber serve multiple purposes: they indicate the functional state of the gas supply device to the antechamber, enable equalization of gas supply across multiple antechambers, and provide information for controlling the gas supply device. This multi-functional use of existing temperature measurements achieves reliable monitoring without adding dedicated complex monitoring equipment for each antechamber.
3Ease of operation
If equalization of gas quantity across antechambers is achieved, then homogeneity is improved, but control complexity increases
Solution Approach 1:
The patent implements feedback control for gas supply equalization by continuously comparing exhaust gas temperature changes from disturbances in different antechambers and adjusting gas supply to achieve equalization. The control unit uses the temperature differential as feedback to modify gas supply quantities, creating a closed-loop system that automatically equalizes gas distribution across antechambers without requiring complex direct gas quantity measurements or manual adjustment.
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
This approach enables indirect determination of gas quantity without direct measurement, allowing for monitoring and equalization of gas supply to antechambers, ensuring optimal engine operation and automatic correction of deviations.
Implementation Method 1
for each combustion chamber (2), there is a temperature sensor (6) for measuring an exhaust gas temperature T of an exhaust gas generated in the combustion chamber (2)
Implementation Method 2
an exhaust gas generated in a combustion chamber (2)
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A method for detecting the quantity of gas (m) which is supplied by means of a gas supply device (4) to an antechamber (3) of an internal combustion engine (1), whereby a targeted disturbance (Au) of the gas quantity (m) supplied by the gas supply device (4) is performed and a change (AT) resulting from the target disturbance (Au) in an exhaust gas temperature (T) of an exhaust gas generated in a combustion chamber (2) connected to the antechamber (3) is measured, whereby, by comparison with a target value of the change (ATtarget) of the exhaust gas temperature (T), the gas quantity (m) supplied by means of the gas supply device (4) is deduced.