Crankshafts TRIZ Cases

Asymmetric piston geometry reduces engine weight while optimizing air-fuel mixture management through non-cylinder cross-section design.

High shear mixing of polyamide-imide and polyamide resins creates a compatible binder that resolves cavitation resistance issues in plain bearings.

Hinged annular bridge and projection prevent reverse folding of the seal lip during installation under axial loads.

A functional shaft assembly device uses piezoelectric force measuring units to monitor insertion forces during component joining.

Rotating the workpiece while pivoting the machining head reduces positioning errors and simplifies programming for precise oil hole drilling.

Orthogonal cuts in a cylindrical piston pin form three sectors that generate torque at top dead center while preventing structural iron wire effects.

A phase adjuster modifies the coupling angle between an eccentric shaft and crankshaft, optimizing energy utilization across variable Atkinson cycles.

An elliptical pendulum absorber prevents torsional amplification and carrier contact across multiple frequencies.

A locating crankshaft with circumferential bearing bores and a locking nut secures the orbiting disk position.

A die forging method uses pre-formed excess portions on crank arms to bulge toward journals during trimming, thickening arm sides while removing flash.

Segmented bearing cartridge creates dedicated lubricant spaces between housing walls and the rotating member.

Single-unit filter module merges with jumper tube to trap debris, reducing wear and simplifying repair in gas turbine epicyclic gear systems.

A forged crankshaft manufacturing method uses a U-shaped die to bend excess projecting portions into recesses for weight reduction.

A thermal barrier coating in a shaft groove absorbs rotational heat, reducing non-uniform heating and synchronous vibration without lowering production speed.

Optimized chemical composition and hardness prevent surface cracking during straightening.

A tiltable sleeve member accommodates angular misalignment between a shaft and mounting device, reducing wear on roller bearings without precision machining.

Tilted shoulders resolve forging fill trade-offs for lightweight crankshafts.

A segmented crankshaft transition radius method uses strain hardening to enhance bearing capacity.

Fe-Mn-Si intermetallic compounds disperse in a single beta phase brass matrix to enhance hardness and tensile strength.

Heat pipes transfer thermal energy from shaft bearings to a primary cooling circuit, eliminating auxiliary systems and reducing fabrication costs.

Optimized oil groove depth in crankshaft main bearings ensures prompt lubricant supply to bearing clearances during cold engine starts.

Variable crank arm widths and strategic counterweights reduce moment of inertia while maintaining torsional rigidity for improved fuel efficiency.

A crankshaft fillet receives localized compressive residual stress to strengthen critical load-bearing regions without wasteful full-circumference processing.

Optimized chemical composition and controlled pro-eutectoid ferrite content deliver strength without vanadium or surface hardening treatments.

Three eccentric gears mesh at 120 degrees to reduce sliding loss and enhance durability in compact designs.

A crankshaft filler member simplifies assembly through a nested fitting and connecting design.

A cast hollow crankshaft uses nested cores with integrated oil ducts to form internal cavities while maintaining a solid outer contour.

A hydrodynamic journal bearing pad uses a curved interface to enhance mechanical stiffness and rigidity under heavy loads.

Thermal circuits manage differential expansion of bearing shells, reducing cooling energy consumption while maintaining precise sliding bearing clearance.

A forged crankshaft manufacturing apparatus uses guided tools to deform excess portions and thicken side portions of rough crank arms.

Targeted fluid inlets supply lubricant at high-pressure points, preventing seizure and wear in epicyclic gearboxes.

A double-link piston crank mechanism uses a thicker central crank pin bearing portion to enhance structural rigidity and support combustion loads.

Offset lubrication channels in automotive engine bearings reduce oil leakage at parting lines, maintaining pressure for connecting rod journals.

Segmented oil grooves reduce pressure load while enhancing cooling to prevent thermal expansion damage.

Stand tube channels excess fluid away from dynamic components via gravity, reducing aeration and wear in vehicular transmissions.

An integrated electric pump within a 3.5-gallon reservoir eliminates bulky external components, resolving spilling risks during fluid transfer.

A one-piece shaft integrates a radial groove and cavity to collect lubricant from the rolling bearing interface.

Non-uniform oil grooves balance fluid flow and structural strength to resolve lubrication wear in track undercarriages.

Segmented plain bearing shells with integrated circumferential slots replace grooved designs to cut pumping power and simplify engine block passageways.

Logarithmically curved split ring halves and toroidal rollers accommodate radial offsets to reduce friction and vibration in combustion engines.

A fluid-actuated rotary motor drives a crank shaft via spline engagement to control variable vanes in gas turbine engines.

A drain valve uses a displaceable element to progressively open a smooth bore run-off path for controlled liquid drainage.

A threaded fill pipe and drain plug assembly integrates sealing interfaces to reduce weight and corrosion risks in automotive transmissions.

Nested trigger wheels reduce engine length by shifting mass via apertures, while asymmetric teeth and counterweights prevent damage and maintain balance.

An automatic greasing device supplies lubricant to chuck sliding parts during rotary cutter replacement cycles.

Auxiliary wicks positioned at 4 and 8 o'clock extend the lubricated area, reducing unit loading and wear rates in railway traction motor bearings.