Machines/Engines TRIZ Cases

A wrap-around bellows duct balances out-of-plane bending flexibility with flow-direction stiffness to reduce stress and ease assembly.

A centrally bulged valve head with a flatter outer edge cuts wear and mass while preserving exhaust flow and combustion behavior.

A stepped two-stage press-fit stabilizes fuel injection valve coupling strength despite tolerance variation while reducing galling.

Threaded adjustable tie rods shift the bearing centerline in a turbine case to balance blade tip clearances and accommodate sag and distortion.

A hub-mounted sight glass, remote sensing port, and tapered sediment bowl improve oil level visibility and ferrous particle detection.

Wrapped bellows convolutes give a fluid duct broad bending flexibility while preserving flow-direction stiffness for easier assembly.

A partitioned dual cooling gallery keeps oil away from the hottest piston zones, reducing coking, weld debris exposure, and oil degradation.

Sensor feedback adjusts thrust chamber pressure to offset axial thrust in turbomachines, boosting gas bearing load capacity without oil lubrication.

A tuned Ni-based alloy composition helps engine valves resist oxidation and corrosion while retaining strength and weldability at high temperatures.

A single gasket seals both the male interface and the welded head-body joint, reducing parts while preventing leakage in plug-in connectors.

Compromised blade-root bushings are extracted, cavity surfaces reconditioned, and bonded inserts installed to restore load transfer and joint strength.

A bellows and constant-volume boot shift water laterally in a bi-level tank, cutting lift energy while preserving continuous level differential.

A drain plug that seals the housing opening during filter installation blocks dirty fuel backflow and enables automatic water draining.

A raised aperture and circumvention passage keep oil contaminants out of the valve body, improving oil pump valve stability.

Alternating loading and removable stem jigs form a hardened valve boss at a chosen stem location while preserving neck toughness.

Combining SMA wire contraction with electrostatic muscle holding boosts force and displacement while alignment aids simplify electrode positioning.

Dynamic arming and triggering thresholds help variable reluctance sensors separate noise from speed signals for precise turbine control.

A low-carbon Fe-Cr-Mo alloy balances hardness, wear resistance, and acid corrosion resistance for diesel valve seat inserts under EGR and high heat.

A dispatch server turns tank-nearly-full alerts into claimable runs, guiding drivers to suitable drop-off sites and cutting unnecessary trips.

A puncture cap, sealed housing, and guided flow path drain hot oil from filters with less spillage, cleanup, and burn risk.

Micronized hard phases in a Cu-Ni-Si-Fe-Mo-Al alloy suppress delamination and stress concentration in laser-clad valve sheets.

A diglycerol C12-C24 saturated fatty ester cuts gear friction while limiting foaming, water entrainment, and thermal instability.

An integrated hub, flat-view sight glass, and tapered sediment bowl improve fluid sampling accuracy and prevent sludge interference.

A C-shaped spring clip locks retaining pins in the injector cup to prevent dislodgment, cut rattle, and simplify high-pressure fuel injector assembly.

A displacement limiter restrains ring check valve expansion while preserving oil flow, reducing startup pressure loss and valve damage.

Gradual centrifuge pump ramping maintains lubricant flow during startup and shutdown, reducing rotor vibration, friction, and wear.

Axially adjustable tubular sleeves set fuel injector valve lift precisely, avoiding selective part pairing and improving consistency in dual valve arrangements.

A channeled removable oil cap holds a retention bag to contain drained oil, cutting leakage, cleanup, and strain in small-engine oil changes.

A lowered rotary fixture with radial slots increases EDM clearance and supports angled wire cuts on larger annular parts.

A blow-molded monolayer thermoplastic elastomer conduit maintains flexibility and elongation at break under sustained high temperatures.

A rotating shaft vents crankcase air through internal centrifuge passageways, returning separated oil to the crankcase and limiting seal damage.

A movable sleeve seals the oil filter housing before plunger actuation, reducing spillage and contamination during canister drainage.

Elastic clip segments absorb fuel injection loads and lock injector orientation, improving installation stability, fatigue durability, and assembly.

An angled in-compartment valve layout keeps hydraulic fluid off the exhaust system while improving hydraulic line routing in refuse vehicles.

A spool and one-way valves reroute excess hydraulic fluid between actuation chambers to reduce pump power and fluid consumption.

Measured laser ablation corrects armature tilt in a fuel injector control valve to achieve final air gap and parallelism with less debris.

Artificial muscle actuators replace bulky motors to rotate and tilt a camera platform quietly, reliably, and at lower cost.

A dual-phase Cu-Fe valve seat alloy improves wear resistance in laser cladding while limiting thermal damage and cracking in aluminum heads.

A pulsed carrier and staged actuator groups let one machine drill, insert, and squeeze rivets faster while avoiding complex robotic heads.

Press-fitted tubular sleeves set seating faces for accurate spool lift in dual fuel injector valve arrangements, reducing selective assembly waste.

Segmented full and partial circumferential folds let a pipe bend in tight spaces while maintaining pressure stability and reducing material use.

A PTFE-based switching film resists aggressive blow-by gases while bending at 1-250 mbar to maintain valve sealing and pressure regulation.

Modular jumper tubes let engineers service intake manifold and cylinder head seals individually while maintaining airtight airflow.

A hairpin-shaped flexible bearing support and plenum maintain bearing cavity pressure while absorbing thermal growth in a gas turbine engine.

Circumferential barbs and reinforcement rings create a compact fuel connector that seals and resists deformation without O-rings or clamps.

A movable securing element prevents cover plate rotation while simplifying filter assembly and disassembly, even with impurity buildup.

By switching oil pump pressure from outdoor and cooling water temperatures, this case cuts warm-up time and fuel use while preserving lubrication.

Compromised blade-root bushings are removed, cavity surfaces reconditioned, and bonded inserts restore wind turbine blade-hub joint strength.

By adjusting cylinder oil viscosity and TBN to liner temperature and load, this case improves two-stroke crosshead engine efficiency.

A temperature- and pressure-responsive valve group routes oil through or around a heat exchanger to avoid pressure-peak wear and keep engine oil in range.