Burnout Detection via Wheel Speed and Engine RPM Comparison
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Solution Overview
Problem
Existing systems fail to effectively detect and prevent driven wheel spin in motor vehicles, leading to increased wear on the drive train and potential damage, especially when anti-slip control is deactivated.
Innovation Solution
A method that detects a burnout state by comparing the rotational wheel speeds, vehicle speed, and engine rotational speed with predefined constants, and reduces engine power to prevent further spinning, incorporating additional parameters like accelerator pedal position, parking brake status, and anti-slip control activation to accurately identify and mitigate wheel spin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If anti-slip control is deactivated to allow normal operation on slippery surfaces, then driver freedom and normal operation are improved, but driven wheel spin and drive train wear increase
Solution Approach 1:
The system continuously monitors wheel speeds, vehicle speed, and engine rotational speed to detect burnout conditions. When a burnout is detected (wheel speed exceeds first constant, vehicle speed below second constant, engine speed above third constant), the system provides feedback by reducing engine power to prevent drive train damage while allowing the driver to maintain operational freedom on slippery surfaces.
Solution Approach 2:
The system changes engine power parameters dynamically based on detected conditions. By adjusting engine power output in response to burnout detection, the system protects the drive train from excessive wear while maintaining driver control and normal operation capabilities on slippery surfaces.
2Reliability
If engine power is reduced to prevent wheel spin, then drive train wear is minimized, but vehicle mobility and driver control are restricted
Solution Approach 1:
The system dynamically adjusts engine power based on real-time detection of burnout conditions rather than applying static restrictions. Engine power is reduced only when specific conditions are met (wheel speed ≥ first constant, vehicle speed ≤ second constant, engine speed ≥ third constant), allowing full mobility and driver control during normal operation while protecting the drive train during burnout events.
Solution Approach 2:
The system applies partial engine power reduction rather than complete power cutoff when burnout is detected. This partial action is sufficient to prevent drive train damage from excessive wheel spin while maintaining enough power to preserve vehicle mobility and driver control on slippery surfaces.
3Measurement precision
If multiple parameters are monitored to accurately detect burnout, then detection precision is improved, but system complexity increases
Solution Approach 1:
The system uses a multi-functional control unit that monitors multiple parameters (wheel speeds, vehicle speed, engine rotational speed, accelerator pedal position, parking brake status, ESP status) through integrated sensors and processing. This universal approach improves burnout detection accuracy by considering multiple conditions simultaneously while managing system complexity through consolidation in a single control unit.
Data Source
AI summary
A method for detecting a burnout state during which driven wheels of a motor vehicle are caused to spin is provided. The method includes detecting a rotational wheel speed of a first driven wheel and a rotational wheel speed of a second driven wheel and comparing the rotational wheel speed of the faster turning wheel with a first constant. A vehicle speed is detected and compared with a second constant. An engine rotational speed is detected and compared with a third constant. The burnout state is detected when the rotational wheel speed of the faster turning wheel is greater than the first constant, the vehicle speed is less than the second constant, and the engine rotational speed is greater than the third constant.