Fluid Actuated Clutches TRIZ Cases

Mechanical clinching joins aluminum and ferrous rotating members in an automatic transmission while limiting axial growth and preserving strength.

Sequential opening of dual discharge valves controls pressure drop to avoid piston overshoot while preserving clutch disengagement response.

Dual-valve fluid control speeds clutch piston startup by overcoming spring hysteresis and filling delays during engagement switching.

Separate fluid channels formed by stacked clutch plates improve four-pass torque converter flow control, engagement reliability, and damping.

A single sensor tracks clutch piston speed and axial displacement to detect stack wear and predict remaining transmission clutch life.

A sensor-equipped bypass clutch lets a rotorcraft secondary engine feed the main rotor or accessories as power demand changes.

A pilot-operated failure response valve blocks clutch pressure in real time to prevent uncommanded machine motion while reducing transmission space and cost.

A two-chamber rotor pump with multiple pressure circuits lets one gearbox actuator independently shift several clutches and brakes while tolerating leakage.

A spring-biased movable end plate maintains balanced plate gaps in a wet clutch pack, cutting drag torque with fewer parts and simpler assembly.

Axial protrusions, seals, and flow holes balance hydraulic pressure in a drivetrain clutch to prevent premature engagement and uneven force.

Lubricant flow is varied by clutch temperature and input torque to cut stirring resistance and drag while protecting friction element durability.

A dual wet clutch strategy uses a responsive second clutch at launch, then shifts to a durable first clutch when drag torque rises in cold oil.

Clutch release and a mechanical stopper let the shift drum settle at a defined position, improving in-gear learning accuracy and avoiding dog hits.

A DLC-coated, FNC-backed armature prevents slide-bearing adhesion and material transfer, preserving clutch pressure control with lower power demand.

A plate-and-elastic-member return unit gives a torque converter lock-up piston proper separation force in tight axial space.

A reed cooling valve in the clutch balance dam blocks oil leakage at low pressure and opens under rotation to cool clutch plates.

Chip-less formed ridge openings and damming sections guide clutch oil to the discs while limiting drag torque and machining cost.

Uneven circumferential piston surfaces alter oil flow and use buoyancy to clear chamber bubbles, improving clutch hydraulic responsiveness.

Shared MR fluid circulation across multiple clutches cuts dissipation, stabilizes fluid properties, and supports compact fast-response actuation.

An integral annular pressing member with radial protrusions cuts clutch machining and assembly effort while preserving axial disc compression.

A passive centrifugal valve keeps parasitic loads disconnected at low flywheel speed, improving diesel cold starts without electronics.

A model-based VKP setting process improves hydraulic clutch pressure accuracy and learning speed across nonlinear control regions.

A back torque cam holds the weight and interlocking members in contact, stabilizing clutch plate engagement during engine braking.

A clutch-disconnected learning mode fixes the shift drum at defined positions to avoid dog hits and improve gear detection accuracy.

Oblique branched grooves guide cooling oil tangentially across an annular friction surface to improve heat dissipation and friction stability.

Stepwise PID stroke targets suppress piston overshoot and undershoot in pneumatic clutch actuators, reducing wear and damage.

Dual control valves raise clutch oil inflow and outflow during slip, preserving lubrication and cooling without starving the transmission.

An electric motor and spindle in the clutch pressure line automate opening and closing while preserving hydraulic operation and comfort.

A lubricant line routed inside the driven shaft reaches the drive-side bearing from the accessible end, enabling regular lubrication and longer bearing life.

An integrated clutch pack uses hydraulic actuation, vibration damping, and fan-assisted cooling to raise thermal capacity and simplify refurbishment.

A bypass check valve and pressure sensor keep a normally open hydraulic clutch engaged with fewer valves and lower pump power use.

A nested pneumatic-hydraulic piston layout cuts clutch actuator length while improving positioning sensitivity, damping, and air efficiency.

Independent hydraulic clutch actuation redistributes wheel torque to improve traction while mitigating trailer sway and oversteer during cornering.

An integrated speed sensor ring in the clutch pack enables accurate angular velocity measurement while preserving movement regulation in braking assemblies.

A replacement splined backing ring simplifies torque converter rebuilding while improving clutch fit, durability, and vibration control.

A larger annular piston area, rigid pressure plate, and revised clutch pack raise torque capacity while reducing slippage, distortion, and heat.

A lever-type lifter plate cuts manipulation force and component weight in an internal combustion engine friction clutch.

By fixing the support element to the inner plate carrier, this clutch layout limits inner-region deformation, cuts drag torque, and avoids damage.

A parallel one-way and mechanical clutch layout cuts drag torque, weight, and packaging limits while maintaining transmission torque capacity.

A compensation circuit and bidirectional seal separate charge and apply pressures to improve torque converter clutch response.

Pilot-assisted pressure control valves shorten discharge time, prevent line emptying, and improve transmission shift response in compact hydraulics.

An integrated retaining feature in a stamped clutch cover locks the retaining ring against axial pressure and centrifugal expansion.

Dynamic brake and clutch pressure control compensates drag torque, enabling continuous output speed from zero to full input speed.

Wedge surfaces limit piston back-travel in a torque converter lockup clutch, keeping liftoff clearance consistent as friction materials wear.

An automation unit splits the clutch hydraulic line for smooth automated starts while preserving manual pedal override in stop-and-go driving.

A lever-action disk spring boosts piston force at lower hydraulic pressure, cutting oil pump load and removing the canceller chamber.