Valve Arrangements TRIZ Cases

Variable valve timing increases positive overlap during cold engine start to improve exhaust gas recirculation and fuel evaporation.

A rocker arm assembly uses a hydraulic locking pin to secure the shaft position.

A locking pipe plug seals a main pipeline sidewall opening to enable pig traversal into cross-lines.

A fuel vapor discharge device uses a detector and blocking mechanism to release vaporous fuel from a high-pressure pump container.

Asymmetric magnet positioning holds ferromagnetic fluid to seal tubes, relieving high intraocular pressure while preventing excessive drainage.

Integrates a retaining portion into the valve timing housing to secure the bias spring, eliminating separate pin assembly and reducing part count.

A knock controller calculates background levels using minimum value detection to maintain accurate thresholds despite signal distortion.

Lock pin engages recess sections to hold valve timing at retardation angle, eliminating need for additional hydraulic pressure source.

A microfluidic valve gate film with a hydrophobic surface prevents adhesion to the valve seat, ensuring reliable opening and closing of the micro-flow path.

Impurity-diffused resistors on a semiconductor substrate measure thrust and torque while providing automatic temperature compensation.

Phasing mechanism adjusts eccentric shaft rotation to vary piston movement, resolving pumping loss versus adaptability trade-offs.

A multivalve system relocates the LPG fuel pump outside the pressurized tank to enable safe maintenance without depressurization.

Negative skewness and limited core roughness depth prevent peeling and pitching damage in engine cam followers.

Bowl-shaped mesh filter creates a lateral space between its outer circumference and the passageway wall to collect actuation debris.

Clamps secure filling bodies in hollow shafts during heat treatment, preventing position drift while reducing mass.

A capillary-stabilized liquid gating mechanism reversibly seals pores to create non-fouling fluid-lined channels.

Segmenting the transition range with a dedicated switchover model resolves torque neutrality issues while reducing computational overhead.

A fluid filter draining device uses a frictional engagement ring and threaded drill tip to penetrate the filter sidewall for controlled oil removal.

Axially shifting a cam carrier aligns radial oil holes with a single shaft passage to lubricate variable valve train lobes.

A control device for variable valve timing mechanisms calculates rotational phase using dual sensor inputs to maintain accurate camshaft positioning.

A micro flow channel chip uses a low glass transition temperature adhesive resin layer to bond a cover film over a base material groove.

Optimized valve timing controls intake and exhaust overlap to manage gas flow in compression ignition engines.

Inserting a double leg spring's V-shaped arm into a cylinder head groove eliminates screws, reducing assembly complexity and improving positioning accuracy.

An intermediary finger element secures the pin in a roller tappet, preventing plastic deformation and wear during insertion.

A valve bridge guide dampens uncontrolled motion via conformal surfaces, preventing engine damage from partial locking mechanism engagement.

Switchable cam follower couples primary and secondary cams via coupling bolts, eliminating complex hydraulic actuators.

A sleeve and plunger kit compresses wire lock rings to fit piston bores, reducing installation force and preventing component stress.

Offset pivot arms translate brake capsule reaction forces to prevent hydraulic lash adjuster pump-up during diesel engine braking.

A double-piston hydraulic drive device uses linked pistons to actuate exhaust valves in overhead cam engines.

A remote servicing manifold delivers lubricant to well components via a controlled fluid line.

Periodic oil supply aligns channels with rocker arm tips during valve opening, preventing flooding and reducing wear in locomotive engines.

Inject sealant through a pierced opening to create a fluid-tight seal, then cut the pipe to prevent hydrocarbon leakage during decommissioning.

The Online Valve Lifetime Counter system accumulates stress data to determine remaining valve life, eliminating costly shutdowns required for visual inspection.

Optimizes fuel injection timing during HCCI-to-SI transitions to prevent unstable combustion and reduce nitrogen oxide emissions.

A pressure accumulator stores fluid at low pressure to support phase adjustments in variable valve timing systems.

An adjustable camshaft merges identical circular segment sections to extend valve opening duration without lift discontinuities.

Dynamic cam phasing adjusts intake valve closure timing to reduce nitrogen oxide emissions while maintaining rapid torque response during load increases.

A segmented camshaft assembly uses a planetary gear system to rotate concentric portions in opposite directions, adjusting intake and exhaust valve timing.

A switchable roller finger follower uses a locking pin with adjustable flat height to set mechanical lash between inner and outer levers.

A cam follower roller uses a low-density body between axial portions to lower rotational inertia.

Automated optical imaging inspects viscous liquid positioning inside one-way degassing valves prior to installation.

A hydraulic camshaft adjuster reservoir maintains pressure medium coverage to supply the central locking mechanism during engine start-up.

Mechanical cam profile geometry synchronizes lost motion activation within one revolution, preventing high valve seating velocities during engine braking.

A combined actuator module uses shared high and low side switches to control inductor coils for both fuel injection and cylinder deactivation.

Voltage sensors detect three-phase AC power disruptions, enabling the microcontroller to inhibit motor operation and prevent hardware damage.

Integrated pipe socket enables internal welding, preventing water ingress and corrosion during subsea operations.

Projecting spikes penetrate oil filter walls to drain residual oil from internal chambers blocked by gravity and check valves.

A protective cap assembly uses a valve and vacuum pump to create negative pressure for secure positioning.