Engine Speed Sensing Anomaly Detection Using Torque Validation
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Solution Overview
Problem
Existing methods fail to detect short-lived or abrupt speed sensing anomalies in internal combustion engines, which can lead to engine damage or performance reduction, and distinguish between real and apparent speed deviations.
Innovation Solution
A detection method involving a sensor health check, engine speed deviation detection, and a torque deviation check to identify whether a speed deviation is due to a short-lived sensing anomaly, using a control unit to perform these checks and activate protective actions if necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If engine speed sensing is used to detect abnormal combustion phenomena, then abnormal combustion can be detected, but short-lived or abrupt speed sensing anomalies cannot be distinguished from real speed deviations
Solution Approach 1:
The detection method is segmented into multiple independent checks: sensor health check, speed deviation detection, torque deviation check, and anomaly identification. Each check focuses on a specific aspect, allowing the system to distinguish between sensor failures and real speed deviations by evaluating multiple dimensions separately rather than relying on a single speed signal
Solution Approach 2:
The torque deviation check serves as an intermediary validation mechanism. Instead of directly trusting the speed sensor signal, the system uses torque measurements as an intermediate indicator to verify whether speed deviations are real. Since torque and speed are physically related but measured independently, this intermediary check helps distinguish sensor anomalies from actual engine conditions
2Reliability
If monitoring methods are added to detect short-lived anomalies, then detection capability is improved, but system complexity increases
Solution Approach 1:
The control unit performs multiple functions using existing sensors: it monitors speed, performs sensor health checks, detects deviations, and validates torque. By making the control unit multi-functional rather than adding dedicated hardware for each function, the system achieves comprehensive anomaly detection without proportionally increasing device complexity
Solution Approach 2:
The system uses its own existing sensors and control unit to perform self-diagnosis and anomaly detection. The control unit monitors its own sensor inputs and validates data consistency without requiring external monitoring equipment, allowing the system to detect its own anomalies using resources already present in the engine control architecture
Data Source
AI summary
The present invention pertains to a detection method for detecting a short-lived speed sensing anomaly of an internal combustion engine. The detection method comprises the steps of performing a sensor health check, detecting an engine speed deviation, performing a torque deviation check and identifying whether the detected engine speed deviation refers to a short-lived speed sensing anomaly based on the sensor health check and the torque deviation check. Furthermore, a device suitable for carrying out the detection method according to the present disclosure may be provided, comprising a control unit configured to perform the detection method according to the invention.