Valve Arrangements TRIZ Cases

Aligning the oil injection hole with the outlet only during cam nose contact maintains sufficient lubricating oil pressure at low engine speeds.

Rounded sections in the locking contour allow slight rotation, preventing slide jamming and reducing wear in switchable valve trains.

Sub-critical surface hardening deposits wear-resistant layers on lash adjuster bodies without altering functional geometry.

A cam journal with an asymmetric hollow bore deforms under load to release contact force with the bearing member.

A controller calculates expected air amount to determine optimal ignition timing for vehicle engines.

A deformable engagement portion secures an oil pressure sensor against gravity, resolving assembly positioning difficulties and preventing component damage.

A hollow piston valve uses a throttle point to regulate hydraulic fluid flow within an oscillating motor camshaft adjuster.

A docking station uses a cam actuator to open and close a valve in a liquid container throat plug assembly.

A guide element with fork-shaped legs absorbs tilting moments from axially divided cams to ensure uniform Hertzian pressure and reduce premature wear.

A hollow camshaft uses an inner shaft to axially displace cam segments and adjust valve timing.

A magnetostrictive sensor measures actuating element position via structure-borne sound waves.

A paraffin-based flexible film seals the electrolyte cavity in a fluidic actuator, preventing water vapor loss while allowing gas-induced deformation.

A camshaft adjustment device merges multiple tappets into a single unit to eliminate structural complexity and reduce installation space requirements.

Segmented inner walls in the latch pin vent to atmospheric pressure, reducing response time bottlenecks in high-speed rocker arm valvetrains.

An upward projection on the drip guides horizontal cutting to place ejection holes accurately, eliminating complex alignment requirements.

A variable valve actuation system coordinates with an exhaust restriction device to manage gas flow.

An eccentric control shaft slot adjusts the rocker pivot axis to vary valve lift without lost motion or timing delays in the engine.

One-piece plunger column hydraulic tappet eliminates split interfaces that cause clamping stagnation and inconsistent leakdown.

Interlocking arcuate jaws and a power tool driven tap pierce main lines rapidly while preventing leaks from loose mechanisms.

Engine control device prevents intermittent operation shutdown during foreign object removal to ensure reliable variable valve timing recovery.

An additional arm pivots on a rocker arm to house the hydraulic lash adjuster closer to the fulcrum.

Grouped MEMS flow guiding units enable precise fluid discharge by resolving the contradiction between miniaturized device size and transportation efficiency.

A ventilation member equipped to a communication hole permits vapor flow while restricting liquid entry into an electronic component accommodation space.

Feedforward control compensates for cam torque delay at engine start, allowing precise valve timing convergence before feedback loop stabilizes.

Wavelength detection measures bearing surface radius to sort rocker arms, reducing valve lift variation.

A diverter valve with an inwardly concave groove reduces side forces from hydraulic pressure to enable reliable sliding operation.

Axially movable cam segments intermesh with a splined inner bearing ring to distribute load evenly and reduce wear in tight installation spaces.

Dual-diameter plug segments enable pig passage through pipeline apertures, eliminating clogging hazards and downtime.

Elastic stopper provides progressive force to open check valve, preventing extended valve overlap during engine brake function.

A cylinder head hydraulic lash adjuster bore features a side wall with differentiated thickness to support the adjuster against mechanical stress.

A camshaft phaser locking bore features a radial and longitudinal passage network that routes hydraulic fluid to extract particles from the mechanism.

A camshaft adjustment system detects actual shaft positions based on valve actuation effects to calibrate phase shifts.

Detent mechanisms with inclined grooves shift the cam element, reducing camshaft length while maintaining switching reliability.

Segmented cam phasers enable independent valve timing control to resolve the trade-off between engine power output and combustion stability.

Bending the blow-by gas path between cam and push-rod chambers traps lubricant mist, reducing consumption.

Axially movable lobe packs on a base shaft enable variable valve lift adjustment, resolving the trade-off between engine adaptability and structural complexity.

A roller rocker lift mechanism with a sliding second rocker arm adjusts valve lift via motor control.

Axially sliding locking elements selectively couple secondary rocker arms to active arms via hydraulic pressure.

A valve timing control apparatus uses selective lock mechanisms to adjust relative rotation phase clearance angles for engine operation.

Mechanical pressing system replaces laser-based thermal control to enable reversible fluid flow without external energy sources.

Stamped rocker arm assembly uses hydraulic piston to resolve wear and friction in variable valve actuation.

Eccentric tappet seating on planar engagement surfaces reduces axis distances, resolving mechanical interference between adjacent actuator units.

Angular detecting protrusions on a lightweight sensor member prevent cracks and improve assembly efficiency.

Motor controller provides real-time camshaft position feedback during cranking to resolve measurement precision versus system complexity trade-offs.

Simplified fast intake valve structure reduces manufacturing costs and enhances durability by eliminating complex assembly steps.

Negative-pressure extraction removes trapped gases from deactivated cylinders, reducing pumping losses and improving fuel economy.

Ball joints with spherical contact surfaces compensate for angle offsets between concentric camshafts, reducing friction and wear.

A variable compression ratio mechanism adjusts mechanical compression to coordinate with intake valve timing changes.

Segmented sensor device detects actuator position via magnetic coupling between drive and transmission components.

A calculation apparatus corrects internal exhaust gas recirculation amounts using valve duration ratios to adjust backflow gas estimates.