Gearing Control TRIZ Cases
- Hydrostatic Transmission Swashplate Control During Vehicle Deceleration
By adjusting swashplate angle from speed and hydraulic pressure, this case limits deceleration load and oil heating in hydrostatic transmissions.
- Integrated Shaft Blocking Mechanism With Low Actuation Force
An elastic preloaded locking element blocks a drivetrain shaft with movement clearance, cutting actuator force and packaging space in electric motor drive units.
- Hydrostatic Transmission Swash Plate Control for Smooth Gear Shifting
Dual servo control of pump and motor swash plates cuts shift shock and engine stall risk, helping work vehicles hold steady speed.
- Vehicle Parking Lock Engagement Using Speed and Auxiliary Power
An auxiliary-powered pawl engages only below speed or acceleration limits, reducing lock stress and preventing roll-away during power faults.
- Electric Transmission Shift Control for Tooth-to-Tooth Engagement
Segmented closed-loop control switches modes by shift-element position to cut force spikes, speed shifting, and reduce transmission wear.
- Transmission Shift Pre-Engagement for Multi-Input Gear Selection
Pre-engaging a transmission ratio while deferring final engagement helps handle multiple driver shift requests with less delay and fewer unnecessary operations.
- Capacitive Shift Panel Logic for Mid-Position Gear Selection
A dual-detector capacitive shift panel resolves PR mid-position ambiguity by prioritizing P over R for safer transmission range selection.
- HMT Transmission Clutch Switching for Smooth Speed Stage Shifts
Coordinated clutch overlap and HST speed adjustment smooth HMT stage shifts, reducing sudden speed changes and travel system load.
- Coupling and Parking Lock Actuation With a Single Vehicle Actuator
A single actuator drives both the clutch and parking lock to cut control complexity, weight, and delay in electric-drive vehicles.
- Mobile Working Machine Gearshift Control With Virtual Position Mapping
Virtual control position mapping keeps torque and speed continuous across gear shifts in mobile working machines while preserving full control resolution.
- Electric AMT Shift Control for Inertial Torque Disengagement
Target motor torque offsets AMT drag-induced inertial torque, improving gear disengagement smoothness while limiting power interruption.
- Rotary Reduction Actuator Output-Angle Sensing Against Gear Backlash
Output-end magnetic angle sensing bypasses gear backlash to improve rotary actuator position detection and shift control robustness.
- Push-Type Shifter Switch Sensing With Sensor Failure Voting
Multiple sensor readings are cross-checked before switch-state voting to identify failed sensors and avoid erroneous shifter position decisions.
- Working Machine Drive Ratio Control for Wheel Spin Prevention
A limited traction force curve and continuously adjusted gearbox ratio help graders prevent wheel spin under rising grading loads.