Motorcycle Electronic Throttle Control Abnormality Detection
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Solution Overview
Problem
Existing electronic throttle control systems in motorcycles are hindered by the need for compact drive motor placement, leading to interference with fuel injection valves, and struggle with distinguishing between instantaneous noise signals and actual abnormalities, causing potential vehicle behavior changes during abnormality detection and recovery.
Innovation Solution
A dual-throttle sensor system with a predetermined abnormality detection period and switching between primary and secondary abnormality processing, where primary processing involves cutting throttle valve drive and secondary processing adjusts fuel injection and ignition timing, ensuring normal feedback control and minimizing vehicle behavior changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a determination delay time period is provided to exclude instantaneous abnormal signal detection, then false abnormality detections due to noise are reduced, but control of the throttle valve based on abnormal output continues until elapse of the determination delay time period causing vehicle behavior changes
Solution Approach 1:
The patent implements dynamic control strategy by switching between normal feedback control and tentative abnormality control based on abnormality detection status. During the determination delay time period, the system dynamically adjusts throttle control to maintain vehicle behavior stability while still providing abnormality detection capability.
Solution Approach 2:
The patent changes the control parameter of throttle opening degree to a predetermined value during tentative abnormality control, rather than maintaining normal feedback control. This parameter change ensures that even during the determination delay period, vehicle behavior remains stable and predictable.
2Volume of moving object
If the drive motor for controlling throttle valve opening degree is arranged compactly, then space constraints are satisfied, but interference with fuel injection valve arranged at intake path occurs
Solution Approach 1:
The patent resolves the spatial conflict by changing the arrangement dimension of the drive motor and fuel injection valve. Instead of arranging them in the same plane where interference occurs, the system positions components in different spatial dimensions or orientations, allowing compact packaging without interference.
Data Source
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AI summary
The present invention relates to an apparatus for controlling a drive force generated by a drive source of a riding type vehicle, comprising means for detecting an abnormality of the drive force control apparatus configured to detect the abnormality of the drive force control apparatus at a predetermined abnormality detecting period, wherein the drive force control apparatus is configured to execute a primary abnormality processing of the drive force control apparatus when the abnormality of the drive force control apparatus is detected, wherein the drive force control apparatus is further configured to release the primary abnormality processing and to execute a normal electronic control of the drive force control apparatus when the abnormality is not detected, and wherein the drive force control apparatus is configured to shift the primary abnormality processing to a secondary abnormality processing, when an abnormality detecting signal detected by the abnormality detecting portion continues even after an elapse of a predetermined abnormality determining time period, wherein the primary abnormality processing is executed at least by cutting to drive a throttle valve.