Gearing Control TRIZ Cases

Two independently controlled gear-wheel motors counter backlash and return flow, helping CVT pumps hold stable hydraulic pressure on 12V power.

Varying torque, actuation force, and differential speed establishes accurate shift-element sensor references for reliable engagement and disengagement.

Autonomous intention detection lets the gear select module give real-time haptic feedback before TCM response, reducing invalid shifts.

Rotor position sensing estimates hydraulic leakage while holding target pressure, improving actuator precision as wear changes the circuit.

A weakened plate with deformation zones clamps components against spacers for play-free mounting without extra clamping parts or overstress.

Grouped switch contacts share output circuits to identify sequential gear positions accurately while reducing sensor size and cost.

Hydraulic circuit changes raise transmission line pressure for heavy-duty use while bypassing computer pressure limits and preserving smooth shifts.

Slide-position feedback and motor power adjustment help an electric tool complete gear shifts smoothly while reducing shock and overload.

A single selector uses planar translational and rotational motion to simplify shift-by-wire gear selection while preserving feedback and position sensing.

When sport mode keeps engine speed above the allowed limit, a timed forced upshift protects against overspeed and stabilizes transmission operation.

When bucket load pressure rises suddenly, limiting hydraulic motor displacement helps balance travel force and lifting force to prevent skidding.

An electronic controller auto-shifts a recreational vehicle sub-transmission to park and blocks unsafe gear changes to protect the powertrain.

By calculating component speed changes and inertia torque, this case improves CVT input and output torque estimation during rapid acceleration.

Generator-mode motor torque unloads the shifting mechanism during gear changes, enabling clutchless shifts with smoother acceleration and lower emissions.

An integral seal on the magnet holder cuts rotary actuator parts and assembly steps while improving output axle sealing and angle sensing reliability.

Combining encoder motor angle with stepwise output shaft signals resolves ambiguous range detection for accurate shift switching and fail-safe monitoring.

A contactless distance sensor inside the shift housing detects rod travel to cut switch wear and simplify bidirectional gear shift signaling.

Ramp-actuated clutch pack synchronization enables load shifting, then a claw clutch carries torque with lower pressing force and energy use.

A pressure-responsive valve and seal ring separate clutch control and cooling flow, cutting torque converter complexity without losing lock-up control.

Two independently controlled electromagnetic actuators create three clutch positions, simplifying transmission shifting while preserving fail-safe operation.

A resilient engaging member and restricting portion limit over-pushing, preventing detachment and keeping shift position changes stable.

A compact pump-motor assembly controls hydraulic flow and pressure without separate valves, reducing damage risk, cavitation, and downtime.

A turbine shaft bleed passage vents trapped air from the hydraulic circuit, reducing fluid compressibility and improving shift actuation.

A dual-curvature shift finger reduces gear knob vibration by adding clearance in one engaged position without increasing shift stroke.

By estimating engine speed variation before mode switching, this case sets the initial CVT step ratio for smoother acceleration and less discomfort.

Reciprocating shift and control fingers sets rail-specific neutral positions, reducing shift errors, shocks, and incomplete gear engagement.

Controls sliding sleeve travel and idler gear rotation to align teeth at standstill, avoiding dog clutch impact in parallel shaft gearboxes.

Model-based valve control limits hydrostatic pump pressure without sensors, reducing vibration, complexity, and control-fluid energy loss.

Adaptive shift map thresholds suppress shift-up during acceleration, avoiding torque interruption shock and improving vehicle drivability.

A gear engagement block locks central and planetary gears together to stop gear-train rotation and hold a parked vehicle reliably.

Pre-adjusting travel motor displacement and compensating hydraulic flow reduces speed change shock during two-motor to one-motor switching.

A solenoid-driven lateral lock integrates lever blocking and shifting feel, cutting parts, assembly complexity, and cost in automatic shifters.

An actuator holds the shift drum between gears until speeds synchronize, reducing shift noise and improving comfort in sequential transmissions.

A single-stable gearbox lever uses hold time to switch between temporary and permanent manual shifting without extra buttons or paddles.

Slip-sign reversal before engaging a second shifting device reduces stick-slip, torque peaks, and gear tooth flank load changes during transmission shifts.

Hall sensors track selector shaft rotation to enable clutchless motorcycle shifting without spring-induced spongy feel or fatigue faults.

Pump flow is inferred from piston speed and known cylinder geometry, enabling transmission hydraulic fault detection without extra flow sensors.

Slowing CVT variator downshifts during engine torque-down suppresses inertia torque and preserves vehicle acceleration.

A coaxial drive drum with cam grooves and driven drums switches concentric transmission shafts while reducing radial size.

A sliding FFC layout limits bending stress and blocks liquid ingress in shift lever electrical connections, improving durability and reliability.

A cabin-accessible selector shaft and locking pin let drivers release park without power and avoid unsafe under-vehicle access.

Dynamic shift-threshold correction curbs repetitive CVT upshifting during kick-down, reducing engine noise and occupant discomfort.