Casings TRIZ Cases

An integrated ladderframe deflection surface redirects high-pressure oil from failed metal seals away from RTV seals and back to the sump.

Direct oil injection through the chain guide improves lubrication efficiency, reducing wear, friction loss, chain elongation, and noise.

An epicyclic gear train extends piston expansion beyond compression, improving combustion energy recovery without added turbocharging.

Offset shift fork boss lines from shared lead groove action points to preserve compact drum width while expanding transmission layout freedom.

An external oil reservoir and dual pumps extend small air-cooled engine oil life to 500 hours, cutting oil changes and downtime.

A one-piece silicone seal uses pressure-boosting protrusions to redirect oil from the mating surface and extend locomotive engine cover life.

Controlling diamond grain area in a thermally sprayed cylinder bore coating cuts wear on hard carbon piston rings while preserving surface finish.

Rotary intake and exhaust valve cylinders use multi-staged ports to improve gas flow, chamber sealing, fuel efficiency, and emissions.

A cast-in low-expansion reinforcement stabilizes shaft bores in aluminum engine housings to limit gear backlash, wear, and vibration.

Equal end-surface thickness in split sliding bearings removes inner steps, improving oil flow, oil film formation, and crankshaft coaxiality.

Low-starting-torque grease at the seal lip maintains lubrication below -30°C, reducing wear and leakage without changing engine fluid.

Varying split-bearing thickness prevents inner steps, preserving crankshaft coaxiality and smooth oil film formation during engine assembly.

By routing breather oil return through the bearing member and existing holes, this case avoids extra piping, added parts, and engine size growth.

Sectored conical rotary valve ports and multi-staged valves improve air-fuel atomization, exhaust expulsion, sealing, and emissions control.

A dual planetary gear layout extends the expansion stroke beyond compression to recover more combustion energy in a radial piston engine.

Deformed tabs in a seal channel hold gasket members without costly machining or assembly gels, improving sealing and leak detection.

Crankshaft-driven rotary port valves replace camshafts and poppet valvetrains to cut moving parts, wear, and maintenance in engines.

Orifices in the head gasket regulate coolant flow between block and head, creating turbulence to cool hot cylinder head zones more effectively.

Interdigitated slots create horizontal passages in a powder metal insert, easing bolt-hole drilling and avoiding specialized tooling.

Ferritic engine materials, tight bore clearance, and dry sump centrifuges cut oil loss and prevent combustion freezing during descent and restart.

Segmented groove-and-protrusion surfaces improve molten aluminum flow and insert bonding, reducing vibration deformation without spray coating.

A guide groove in the chain cover directs oil from a cylinder-block injection hole to the timing chain, cutting parts, precision needs, and cost.

A grooved cylinder liner holder and pivoting link guide the connecting rod past camshaft obstacles for faster crankshaft assembly.

Non-cylindrical bore bridge cooling passages extend deeper into hot spots to cut cylinder bore distortion and liner degradation.

Cast-in inlet and outlet passages let the oil pump mount on one back-end face, cutting external lines, assembly complexity, and pressure loss.

A cast-in reinforcement member with lower thermal expansion helps an aluminum engine housing hold gear backlash and reduce wear, vibration, and NVH.

Conical pins create alignment imprints between bearing cap and cylinder housings, cutting drilling steps while preserving crankshaft bearing accuracy.

Selective holes and grooves in intermediate crank caps let them deform under crankshaft load, cutting bearing friction without added machining cost.

An external oil reservoir with supply and return pumps extends small air-cooled engine oil life to 500 hours while reducing oil-change downtime.

A bearing holder and knock-guided concave tool align the half-thrust washer during camshaft assembly when visibility is poor.

A grooved holder and pivoting link guide the connecting rod around camshaft obstacles during cylinder liner and engine block assembly.

Gear-driven rotating ports replace camshafts and poppet valves to simplify engine valve timing, cut wear points, and reduce maintenance.

An integrated fastener forms and seals a high-pressure fluid conduit between engine block and head, cutting leakage, space use, and circuit complexity.

An S-shaped isolator and oil film gap cut main bearing vibration transfer and engine noise without adding significant weight.

An internal support structure bonded by HIP stiffens the cylinder head, cutting combustion chamber displacement, valve seat wear, and knock risk.