Valve Arrangements TRIZ Cases

A CVVT lock pin control method uses oil pressure to release the locking mechanism.

Decentralized hydraulic valve arrangement eliminates rotor boreholes to preserve structural integrity and reduce fabrication complexity.

A camshaft adjuster radial extension transmits drive moments through a crowned contact surface between coupling halves.

Segmented lock pins bias toward specific seats to resolve locking reliability versus device complexity in hybrid engine starts.

A camshaft with independently rotatable lobe regions enables variable valve timing control across multiple combustion chambers.

A tappet uses a press-fit alignment member secured between staked ends to constrain rotational motion.

Segmented fluidic modules process unpurified samples and transfer them to microfluidic analyzers, resolving volume incompatibility.

Axial pin actuation minimizes cylinder volume while maintaining complex variable valve gear functionality.

An ogival arch on the tappet lug displaces contact points radially outward, resolving installation precision trade-offs that cause concentrated edge wear.

A soft elastomeric diode uses pneumatic pressure to switch between bistable states, enabling mechanical logic operations without external energy.

Heating composite housing elements expands openings for easy shaft insertion, preventing cooling delays and misalignment during automotive engine assembly.

Segmented rocker arms and check valve actuators control individual exhaust valve opening distances to resolve precision versus complexity trade-offs.

Elastic membranes in a multicellular pump store mechanical energy to reduce electric power consumption during fluid delivery.

A positioning signal combines binary alarm states with continuous analog data over a single line to reduce hardware complexity.

Internal exhaust gas recirculation raises exhaust stream temperature to restore aftertreatment efficiency during cold starts without adding components.

A faucet switch unit integrates an angle detector and microprocessor to track cumulative water usage time.

Relocates locking components to the cam pack, eliminating bore distortion during hardening and simplifying engine assembly.

Applying specific current levels to electric VCT actuators prevents camshaft drift caused by friction drag when closed-loop feedback is unavailable.

Dual locking pistons in a power transmission device enable reliable two-stage valve lift switching while maintaining structural simplicity.

Integral push rod tubes enhance heat transfer from the cylinder head by eliminating complex seals and reducing thermal resistance.

Asymmetric D-shaped cross-section eliminates captured fasteners, reducing assembly complexity and manufacturing cost while preventing support pin inversion.

A variable valve lift apparatus uses a dedicated positioning unit with grooves and pins to align cam forming portions on the camshaft.

Integrating a mechanical shim and spring within the hydraulic body prevents unintended valve reopening at low temperatures while simplifying manufacturing.

Dynamic oil pressure control during abrupt camshaft shifts resolves insufficient flow issues while minimizing parasitic losses.

Integrated press-fit bearing supports the camshaft and seals the cover opening to prevent leakage.

A controller manages intake valve duration and exhaust valve deactivation to optimize engine operation states.

A balance shaft driven by a crankshaft via a phase adjuster reduces engine noise and friction losses.

Segmented annular seals engage simultaneously to resolve leakage from uneven pressing during valve closure.

Segmented rotor joining surfaces with elevations and depressions create defined contact, sealing fluid ducts despite powder metallurgy tolerances.

Correlates camshaft and crankshaft target events to estimate angular position before synchronization, reducing engine startup time and pollutant emissions.

A hydraulic capsule replaces mechanical clips with a plunger to eliminate impact loading on the engine brake assembly.

A type III center pivot rocker assembly integrates cylinder deactivation and engine brake actuators within a single hydraulic unit.

Throttle sequencing maintains manifold pressure for fast restarts while reducing vibration.

Press forming shapes the annular area of a valve timing front plate to suppress oil leakage from operation chambers.

Dual vane phaser assembly adjusts cam lobe phase angles to reduce noise and vibration during hot restarts.

A spool guide surface positions a discharge hole to direct operation oil flow toward the valve object for rapid pressure transmission.

A microfluidic valve uses a magnetic plunger to seal a capillary nozzle and dispense fluids with high precision.

Snap-in latching elements secure the spring cover to the drive wheel, preventing detachment under operational loads without complex assembly.

Segmenting cylinders into knock-detection groups allows decreasing intake valve lift in affected units and increasing lift elsewhere, preserving fuel economy.

A micro fluid actuator manufacturing method deposits piezoelectric layers on a substrate to form shallow chambers and flow channels.

A failsafe logic method verifies submodule start angles against driver calculations to ensure accurate fuel injection timing.

A valve timing adjusting device uses a temperature sensing body to expand or contract, locking the rotation phase at specific engine temperatures.

A variable valve apparatus repositions the oscillating fulcrum to offset excessive torque loads on the control shaft.

A slidable sleeve uses thread-like grooves converging in a common outlet area to drive axial cam displacement.

ECU dynamically modifies intake and exhaust valve overlap area to resolve combustion variations that cause noise, vibration, and harshness.

Multi-station cold-forming shapes ball plunger blanks to near net dimensions, reducing extensive machining time and costs.

A poker rod apparatus clears hydrocarbon drain blockages through a closed system connection.