Valve Arrangements TRIZ Cases

An external port intersects the oil gallery to direct lubricant, reducing parasitic oil loss while ensuring consistent roller axle lubrication.

Segmented cam phase mechanisms increase angular differences between intake and exhaust cams, reducing pumping loss in internal combustion engines.

A rocker arm spool valve directs fluid through a single supply path to control hydraulic lash adjusters.

Dual retard valve timing adjustments improve low-speed torque and reduce noise, vibration, and harshness in Atkinson-cycle hybrid engines.

A socket structure uses a slidable sleeve to screw into a vessel thread, ensuring liquid drains back into the container upon detachment.

A liquid handling device uses a diaphragm part and discharge channel to direct fluid flow within microchannels.

A tapping sleeve gasket uses circumferential seal beads with varying radial thickness to conform tightly to pipe surfaces.

Segmented primary and secondary fuel injections control combustion pressure rise to reduce noise while maintaining high thermal efficiency.

Thermally formed sensor layers replace mechanical handles, resolving the trade-off between precise control and device complexity.

A split flow exhaust system directs high-pressure gases to a turbine and low-pressure gases to an intake manifold via independent valves.

A control method detects actuator fixation by analyzing movement responses to sequential commands.

Dual idle-stroke devices enable selective cam engagement for engine braking, resolving the trade-off between switching reliability and device complexity.

Mechanically activated electrical switch in fuel gauge circuit verifies proper line seating, preventing hydrocarbon emissions from unsealed connections.

Outlet valve timing controls gas flow between cylinders to enhance engine braking power while reducing thermodynamic losses during starting.

A variable phase mechanism uses a transverse yoke to adjust camshaft rotation angles relative to a drive member.

A roller tappet design channels lubricant to a remote cam surface via a dedicated fluid passage.

Pivoting the locking hole on a single cover eliminates separate inlet and outlet components, reducing manufacturing costs.

A dual lock pin phaser mechanism positions the camshaft rotor assembly via hydraulic detent switching.

A computer system calculates torsional vibration response to estimate engine component condition and residual lifetime.

Color-coded markings and tattletale pointers on handwheels prevent excessive torque damage to actuators.

Atomically thin graphene drums replace thick diaphragms to eliminate mechanical wear, maintain high vacuum, and enable precise fluid control.

An axial handle movement disengages a drive pin via a coupling element, preventing unauthorized actuation without complex mechanisms.

Temperature compensation modules adjust power delivery to MEMS microvalves, resolving rough shifting and clutch overheating in transmissions.

A rotary encoder system integrates a speed sensor to generate data for frequency analysis.

A dual feed hydraulic lash adjuster uses a separate fluid pressure separator to isolate low and high pressure chambers within the plunger assembly.

Centralizing the hydraulic lash adjustment mechanism reduces moment of inertia, improving engine valve operation smoothness.

A programmable logic controller automates grease delivery via a high flow manifold, reducing personnel exposure to hazards in the red zone.

Electric actuator drives push pins to lock levers, eliminating hydraulic galleries for faster valve lift switching.

An interlock unit shifts axially to engage specific cam portions, reducing component interference and simplifying the variable valve lift system.

Bearing sleeves decouple axle retention from rotation in a roller finger follower, preventing uneven wear caused by friction in out-of-round housing holes.

Segmented camshaft assembly uses interchangeable intermediate part and spacer adjustment to convert fuel types without replacing heavy sections.

Removable tube member isolates infrared emitter and receiver from feed dust, enabling maintenance without drop tube disassembly.

A plunger housing features a two-tiered inner structure with material thinning to accommodate larger rollers for higher load ratings.

A variable camshaft phaser leverages internal oil pressure fluctuations to control rotor position without increasing pump capacity.

A pivoting bracket assembly with reaction arms and a compliance member enables vertical actuation of latched devices.

A rotary engine uses double-concave blades and a gearbox to produce torque within a planar housing.

A hydraulic flow limiting valve divides total fluid volume into two branches with different resistances to supply distinct consumers.

Evaluating cylinder pressure interference signals determines valve train settings, eliminating complex position sensors and reducing device complexity.

A separate insulating guide maintains needle centring under pressure, preventing premature electrical contact and false timing signals.

Axially displaceable check valves within a piston control hydraulic fluid flow between working ports, simplifying assembly and reducing device complexity.

Differing valve lifts generate stratified charge to prevent flame off at low loads and control peak cylinder pressure at high loads.

A continuous variable valve lift system uses a spiral contact surface to adjust valve lift and opening duration.

Segmented sheet metal locking covers with raised collars reduce weight and production costs while maintaining structural stability under high oil pressures.

Integrates an anti-rotation device into the support element to orient the roller pin, eliminating separate components that complicate assembly.

A rotary pump uses a gear-driven planar housing to rotate blades opposite the rotor, reducing overall volume.

A continuous variable valve duration apparatus adjusts opening duration via a slider housing and eccentric plate mechanism.

A hydraulic lash assembly with a segmented lever arrangement compensates for thermal expansion variations, maintaining precise valve operation.

Cutout portion in front plate sleeve enables post-assembly torsion spring installation, eliminating labor-intensive pre-installation steps.