Crankshafts TRIZ Cases

An offset centering region in the retaining plate secures and centers the crankshaft vibration damper while cutting interface complexity and space.

A polygonal ball-and-socket coupling uses wear plates, a spherical pivot, and seals to transmit high torque under misalignment with less vibration and wear.

A viscous dual-inertia damper combines flywheel and clutch functions to cut crankshaft vibration, weight, and drivetrain packaging space.

A segmented main bearing oil groove improves cold-start oil supply while limiting normal-operation oil loss and pump size.

A non-heat treated crankshaft steel uses controlled alloying plus sulfur and bismuth to raise fatigue strength while keeping machining loads low.

Increasing crankshaft plain bearing clearance while throttling the oil passage cuts friction without raising oil flow or pump work.

A semi-cylindrical, oleophobic counterweight cuts oil splash and emulsion in immersed crankshafts, preserving lubrication and engine efficiency.

A tandem forked-rod crank layout cuts crankshaft forces and improves mass balance in inline boxer engines without wide cylinder spacing.

Offset crankpins and nested connecting rods raise fracturing pump capacity within transport size limits while reducing shock and wear.

Mixed precipitation-hardened copper alloy particles form a strong bonded coating that improves wear and corrosion resistance in engine sliding members.

Spring-loaded Barkhausen sensors inspect rotating crankshaft journals in-engine, finding defects without teardown, downtime, or complex access.

Setting main bearing load-line intersections within the flange improves load distribution, resists external forces, and extends gear life.

A carrier recess stopper and sealing member block lubricant intrusion while holding the crankshaft axially for better reducer hermeticity.

Tapered spline joints replace weak welds in a baler packer crankshaft, improving torsion resistance, balance, and serviceability.

Intercritical heating and controlled quenching cut crankshaft journal residual stress while preserving hardness and fatigue resistance.

Riser angle and chill-controlled solidification cut crankshaft porosity while improving cast steel strength and manufacturing economy.

An integral crankshaft layout cuts bulk and joint stress while driving dual cutting implements with compact rotary-to-linear motion conversion.

Different counterweight radii reduce two-stroke crankcase volume to boost scavenging and power without fillers that harm lubrication.

A multi-layer polyamide-imide coating uses BaSO4, MoS2, and SiC particles to improve wear resistance while limiting friction and seizure.

A vertical rotating support column machines two elongate workpieces in one setup, improving access, stability, and loading efficiency.

High-energy acoustic beams at 10-30 kHz relax residual stress in large-scale crankshafts, reducing machining deformation and precision loss.

Funnel ports and internal crankpin passages use shaft rotation to move oil to rod bearing journals without a separate pump.

Over-molded tungsten-alloy counterweights metallurgically bond to crank arms to cut crankshaft mass while preserving balance and strength.

A tailored nodular iron composition raises crankshaft strength and stiffness while reducing machining issues, noise, and vibration.

Controlling crankshaft Pa and Rpk through two-stage lapping reduces undulations and peak heights to improve seizure resistance.

Lubrication fluid is routed through connecting rod and piston dome passages to improve piston cooling while retaining lubrication in reciprocating engines.

A variable-depth crank journal recess preserves bearing clearance under deformation, preventing wear while retaining lubrication with low-viscosity oil.

A perpendicular x-y tangent drive replaces complex crank linkage to cut friction losses, extend bearing life, and keep sinusoidal piston motion.

Multiple crank throws and a load transfer member extend the torque angle to reduce dead spots and improve engine torque conversion.

Moment measurement and coordinate compensation keep crankshaft pulley and flange center grooves collinear, cutting noise and durability loss.

Elongated spindle-shaped dimples suppress vortex-like oil turbulence, maintain oil film pressure, and reduce frictional resistance.

Placing the flywheel and gear train on the same crankshaft end cuts twist, torsional vibration, noise, and housing part count.

By shifting the crank hub fixing mechanism closer to bearing support, this loom drive layout reduces shaft bending and stabilizes tension roll motion.

Inner-heavier balance weights and stiffer outer joining sections damp crankshaft vibration without changing crankcase design.

A flow limiter cuts oil volume to crankshaft and big end bearings, maintaining hydrodynamic lubrication while enabling a smaller pump.

A synchronized XY-separating crank layout cuts piston side thrust, frictional loss, and vibration while preserving efficient motion conversion.

An internal high-modulus stiffening bar lets a hollow crankshaft cut mass and material cost while improving stress performance and reducing noise and vibration.

A fluidic control circuit keeps the crankshaft control element in continuous actuator contact, cutting wear, noise, and speed-sensitive inertia.

Multiple exclusion lips, a pumping lip, and internal chambers block debris ingress and lubricant leakage to extend crankshaft seal life.

Controlled impacts at crankshaft transition radii correct concentricity and length errors after hardening while limiting damage and cost.

Controlling where bearing load action lines meet the rotation axis improves thrust support, load distribution, and gear device life.

Varying hard-particle content across resin coating layers improves wear resistance while preserving seizure resistance and low friction.

Radial plug adjustment and an inclinable joining unit compensate shaft offset and tilt, cutting joining force and rework while improving runout.

A slotted crank piece expands for insertion, then restores for interference fit to stop rattling and strengthen rotary compressor assembly.

By moving the pulsar ring onto the crank web and integrating balance weight, this case preserves angle sensing while shrinking engine packaging.

A plunge stroke and counter-rotating deburring stroke pull inward burrs at the far bore opening, leaving smooth through-holes.

A segmented oil groove in a crankshaft main bearing limits oil leakage while clearing machining debris to protect slide surfaces and bearing life.

A mixed integral and separate counterweight layout improves crankshaft balance in asymmetric engines, cutting vibration and main bearing loads.

By separating intake and exhaust storage paths, this rotary engine limits exhaust reversion during intake and improves seal durability.