Motorcycle Oil Pump Control for Transmission and Clutch Protection
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Solution Overview
Problem
Motorcycles often lack an electric oil pump, leading to potential damage to the transmission and clutch due to insufficient oil supply during startup, which existing technologies have not adequately addressed.
Innovation Solution
A motorcycle equipped with a drive motor that drives a mechanical oil pump, controlled by an ECU using sensors to detect neutral gear position, clutch state, and accelerator operation, ensuring oil supply to the transmission and clutch under specific conditions to prevent damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a mechanical oil pump driven by the drive motor is used instead of an electric oil pump, then cost and size are reduced, but the transmission and clutch may suffer from oil supply delay causing damage
Solution Approach 1:
The control portion drives the drive motor to rotate the mechanical oil pump before power transmission begins, ensuring oil is supplied to the transmission and clutch in advance. This preliminary action prevents oil supply delay and protects the transmission and clutch components from damage.
Solution Approach 2:
The control portion monitors the operational state of the drive motor and transmission through sensors, and based on this feedback, controls the drive motor to rotate the oil pump at appropriate times. This feedback mechanism ensures oil supply is synchronized with transmission needs while maintaining cost-effectiveness.
2Reliability
If the drive motor is driven to supply coolant during neutral or clutch disconnect states, then oil supply reliability is improved, but unnecessary energy consumption may occur
Solution Approach 1:
The control portion drives the drive motor to rotate the oil pump in advance during neutral or clutch disconnect states, before actual power transmission begins. This ensures coolant is supplied to critical components before they start operating, preventing damage without requiring continuous motor operation.
Solution Approach 2:
The drive motor is operated periodically rather than continuously - specifically during neutral or clutch disconnect states when no power transmission occurs. This periodic operation ensures reliable coolant supply while minimizing energy consumption by keeping the motor off during active transmission periods.
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
The solution effectively inhibits a lack of oil in the drive motor and transmission, enhancing their durability by ensuring timely coolant supply, particularly during startup and stationary conditions.
Implementation Method 1
a mechanical oil pump that is driven by the drive motor to supply a coolant to the drive motor and the transmission
Implementation Method 2
supply a coolant to the drive motor and the transmission
Implementation Method 3
supply a coolant to the drive motor and the transmission
Data Source
AI summary
A motorcycle that inhibits damage to a transmission and a clutch. The motorcycle includes: a drive motor; a transmission; a clutch that connects or disconnects power transmission between the transmission and the drive motor; a mechanical oil pump that is driven by the drive motor to supply a coolant to the drive motor and the transmission; and a control portion that drives the drive motor to supply the coolant to the drive motor and the transmission if an accelerator operation is not detected and a neutral state is detected, or if an accelerator operation is not detected and a disconnected state of the clutch is detected.