Gearing Control TRIZ Cases
- Bistable Control Valve for Aircraft Parking Brake Pressure Maintenance
A bistable control valve maintains fluid pressure in an aircraft parking brake system, preventing disengagement caused by primary valve faults or leaks.
- Inferred Park Logic Controller for Automatic Vehicle Engagement
A controller-based system automatically engages a vehicle park mechanism upon ignition off or driver absence.
- Vehicle Controller Automatic Gear Shifting for Tight Turns
A vehicle controller monitors steering inputs to automatically downshift the transmission for tight turning maneuvers.
- Transmission Control System for Inhibiting High Speed Directional Shifts
A transmission control system selects speed thresholds to inhibit high speed directional shifts based on engine speed regulation status.
- Motorcycle Automatic Transmission Shock Reduction
Automatic transmission apparatus reduces engine torque before clutch disengagement to minimize drive force fluctuations.
- Hydrostatic Travel Drive Pressure Relief Valve
A valve device connects high-pressure flow paths to low pressure in hydrostatic travel drives, preventing stationary steering resistance.
- Freewheeling Engine Control for Fuel and Support Trade-off
A vehicle transmission control system switches the engine to freewheeling mode to interrupt fuel supply during safe driving intervals.
- Hydraulic Actuator Position Sensing via Pressure Differential
Throttle devices connect hydraulic chambers to generate pressure drops, enabling accurate piston position sensing without complex displacement sensors.
- Vehicle Mass and Road Slope Estimation Using Kalman Filter
A linear Kalman filter estimates road slope using wheel speed and longitudinal acceleration signals.
- Automatic Transmission Controller Shift Response via Pedal Speed
A controller interpolates accelerator pedal position signals to correct friction element hydraulic pressure during rapid acceleration events.
- Remote Vehicle Control via Throttle Position
A remote vehicle control system detects throttle position to engage the transmission.
- CVT Control System Zeroed-Out Wheel Slip Calculation
A CVT control system calculates zeroed-out wheel slip by subtracting theoretical turning speed differences from actual measured speeds.
- Vehicle Control System Using Dynamic Acceleration Weighting
A vehicle control system adjusts driving characteristics by weighting longitudinal acceleration detection values against driver operation parameters.
- Gearshift Lever Trigger with O-Ring Damping for Noise Reduction
Segmented trigger parts with elastomeric O-rings reduce reverse gear noise while lowering manufacturing complexity compared to integrated damping structures.
- Vehicle Control Device for Suppressing Input Shaft Overspeed
Increasing disengagement-side instructed pressure suppresses input shaft overspeed while preventing sudden driving force changes that degrade drivability.
- Noiseless Shifter Park Lock via Magnetic Biasing
Replacing noisy solenoids with electromagnetic interaction eliminates audible click noise while maintaining reliable vehicle park lock function.
- Powertrain Synchronizer Predicts Driver Actions
A powertrain synchronizer analyzes external condition data to predict driver actions and adjusts engine speed before gear engagement.
- Integrated PCB Transmission Indicator Illumination
A V-cut flexible lighting sheet guides light from an integrated PCB source to illuminate vehicle transmission characters.
- Torque Converter Lockup Clutch Pressure Modulation
A torque converter lockup clutch uses a pressure regulator to modulate apply pressure based on vehicle operating conditions.
- Shift Lever Hook Restriction Mechanism for Rattling Suppression
A shift lever hook projecting portion restricts pivot movement against a restricting body, suppressing rattling in the left-right direction.
- Joystick Control for Change Speed Gearbox
Resiliently biased detents between the support body and actuating members eliminate free play in the operating lever, ensuring precise gear engagement.
- Automatic Transmission Shift Cable Clip Design
Integrated two-segment clip secures shift cable to transmission housing, eliminating bulky brackets and reducing installation labor costs.
- Variable Charge Pump System for Hydrostatic Circuits
A charge pump system adjusts rotational speed via a planetary gear set to eliminate parasitic losses from fixed displacement pumps.
- Actuator Reference Position Initialization in Automated Manual Transmissions
A controller initializes actuator reference positions using Hall sensor signal comparison and controlled finger movements.
- Shift Control Device with Elastic Intermediary for Smooth Dog Engagement
An elastic intermediary mechanism absorbs impact during dog engagement, resolving slow shift speeds caused by complex feedback methods.
- Electric Motor Parking Torque Control for Sprag Alignment
An electric motor applies opposing torque to wheels during parking shifts to align the drive shaft fixing apparatus with the parking gear.
- Automatic Transmission Control Device Torque Transition
A control device gradually changes engagement torque during automatic transmission gear shifts to manage rotational speed transitions.
- Motor Vehicle Gear Selector Actuation Detection
Chronological sensor analysis blocks unsafe gear changes caused by passenger interference, eliminating complex optical detection systems.
- Lock-up Clutch Slip Control Torque Management
A lock-up clutch slip control method reduces engine torque below normal levels during engagement to prevent rotation peeling.
- Shift Finger Arrangement One-Piece Metal Forming
Collar drawing merges the finger and sleeve sections into one piece, eliminating joining errors to ensure high dimensional accuracy.
- Steering Column Shifter Mounting Bracket Decoupling
Bracket couples shifter to column moveable portion at two positions, reducing attachment stress and NVH on collapsible columns.
- CVT Reverse Rollback Control via Skew Angle Inversion
A continuously variable transmission control module adjusts planet axle skew angles to stabilize reverse operation.
- Variator Roller Control via Planet-Mediated Sun and Ring Actuation
A variator mechanism uses a planet gear to engage sun and ring components, preventing fouling issues while controlling roller inclination.