Connecting Rod Bearings TRIZ Cases

Non-circular wrist pin design maintains lubrication film while reducing contact pressure to minimize wear and noise in internal combustion engines.

Reshaping bearing coatings before fracture separation maintains precise fit in connecting rods.

Freezing and snapping the workpiece along a curved path increases engagement area to prevent fatigue failure.

Segmented oil groove design directs lubricating flow through specific bearing zones to maintain stable pressure and reduce leakage.

A drawn cup needle roller bearing outer ring achieves precise track surface geometry to ensure stable roller guidance.

Angled slots and tangs create a precision hard stop, resolving rough fracture-split surfaces that fail to prevent rotation.

Truncated arcuate outer surface allows short-shanked clevis engagement without machining stress concentrations.

A connecting rod closing system uses wedges to lock the cap and form a uniform force path.

Zinc sulfide and barium sulfate fillers in a resin binder increase peak load capacity, preventing rapid destruction of crankshaft bearings under high stress.

A C-shaped connecting rod big end slides onto a crankshaft journal, eliminating fasteners and reducing assembly time while maintaining structural integrity.

A connecting rod big end deforms straight bearing shells into a convex axial profile under clamp load.

A thrust washer substrate features a profiled polymer layer with oil distribution grooves for sliding bearing lubrication.

Zone-specific recesses guide oil flow to reduce turbulence and maintain pressure, preventing shaft contact.

A U-shaped clip stabilizes a slider within an aircraft clevis by maintaining contact with opposing sides.

Positioning the oil passage pin-side opening away from 90-degree angles alleviates stress concentration caused by torsional torque in a shortened crankthrow.

Axial projections on plain bearing shell end faces prevent circumferential rotation, avoiding costly welding and preserving dimensional accuracy.

A multi-layered bearing uses a bismuth wearing layer to reduce friction and wear.

Protrusions on the small end bushing define a specific contact zone to manage friction and wear at the piston interface.

Axial offset positioning of the crankpin journal prevents upper pin projection overlap, reducing deformation and maintaining a stable lubricating oil film.

Microtextured shafts with hard coatings reduce bearing wear and prevent seizure under high contact pressures.

A connecting rod bearing uses a cylindrical depression to direct high-pressure lubricating oil away from the slide surface.

A hand-operated tool with a matching shell element resets slipped bearing shells via radial pressure.

A multi-layer sliding layer applies polymeric material and iron oxide to a bearing substrate, preventing sagging and uneven thickness.

Inserting a bush bearing before final machining achieves precise stepped or concave forms without complex pre-shaping.

A servomotor-driven electro press splits connecting rods via a two-step actuation process that eliminates hydraulic energy consumption.

Optimized groove curvature and flexible sealing rings maintain reliability at high revolution speeds while preserving miniaturized dimensions.

Asymmetric thickness distribution in the titanium alloy connecting rod big end prevents deformation under stress while maintaining weight reduction.

A variable displacement reciprocating pump adjusts plunger stroke via rotating eccentric cams to control fluid flow and pressure.

A plain bearing shell features a convexly curved slide face at the apex that tapers toward the edges to maintain oil film integrity.

Segmented attachment member connects to piston rod via interlocking members, reducing repair costs when the mating feature breaks.

A corrugated bearing cage design utilizes hydrodynamic effects to actively move lubricant within rolling-element assemblies.

A crankshaft design enables induction hardening of the crank pin without moving coils radially.

Merging the retaining ring formation with piston manufacturing reduces complexity while ensuring reliable attachment of the eccentric rod.

Axial oil grooves in connecting rod bearings discharge contaminants while maintaining sufficient lubricant supply to prevent seizure.

Chamfering recess edges directs cutting blade contact to suppress burr formation, eliminating trimming steps and ensuring high flatness.

A U-profile groove on the piston slot wall holds a flat I-profile bearing ring to enable hydrodynamic lubrication.

Deformable pads absorb uneven bolt loading to protect precision bearings from deformation while simplifying assembly procedures.

An asymmetric bearing cap fastening arrangement secures the cylinder block to prevent gap formation at the offset cylinder center axis.

Adhesive bonding replaces mechanical fasteners in composite connecting rods, reducing weight and stress while maintaining connection durability.