Valve Arrangements TRIZ Cases

A controller adjusts cylinder deactivation timing based on valve duration to coordinate mode changes.

A pressurized fluid line servicing tool adaptor connects to a pipe and enables tools to be inserted without releasing gas.

An intake-side head oil passage supplies the hydraulic control valve directly from the main line to enable rapid valve timing adjustment.

Integrated position-restriction portions on the stopper restrict rocker arm sliding without adding components, resolving strength versus complexity trade-offs.

Electric auxiliary motor drives eccentric crankshaft to vary stroke cycle, reducing friction losses from complex mechanical gears.

Mold segmentation resolves manufacturing precision trade-offs by enabling high aspect ratio electrodes through wet process deposition.

A flexible electrostatic actuator uses a stepped release layer to distribute electric fields and reduce operating voltage.

A magnetic compass device pivots in three dimensions to locate the center of an adjustable valve.

A PCI board internal clock replaces the operating system timer to synchronize semiconductor controller instructions with precise time intervals.

Segmented replaceable inserts restore cylinder head surfaces, reducing wear and repair costs.

A magnetic repulsion return device replaces mechanical springs to eliminate friction losses and improve power generation efficiency.

Diagnoses cam profile switching malfunctions by comparing air mass flow ratios between cylinder subsets under standard and forced alternative conditions.

A control throttle regulates compressed air entering the engine cylinder during braking events.

Independent membrane sealing in a fluidic cartridge prevents cross-contamination during PCR processing by maintaining isolated reaction chambers.

Independent valve control enables dedicated EGR cylinders to operate rich of stoichiometric.

Integral cover design eliminates tolerance-induced play to prevent undamped pulses and improve service life.

A tubular camshaft integrates a centrifugal oil filter to separate impurities from lubricant during rotation.

Integral cylinder head features channel drainback oil to a timing chain at ambient pressure, eliminating pressurized nozzles and reducing system complexity.

Analyzing exhaust gas oxygen signal variations and air flow rates to detect non-deactivated valves in variable displacement engines.

A camshaft phaser with an asymmetrical central hub minimizes radial dimensions and mass by neutralizing bias spring torque during lock pin engagement.

A free-piston engine uses gas jet collision alongside piston motion to compress the air-fuel mixture.

Symmetric cam phasing eliminates net gas flow between cylinders to resolve fuel economy versus combustion stability trade-offs.

A mass flow controller records operating snapshots and condenses them into functional parameter values for onboard diagnostics.

External metered passage routes fluid to displace trapped air, reducing mode transition time without increasing circuit complexity.

A lifter guide uses compression members to retain itself in a cylinder block without mechanical fasteners.

Rotatable valve actuating cams adjust angular position on a cam carrier, resolving limited opening time flexibility in internal combustion engines.

Dynamic intake cam adjustment reduces pumping loss at low loads and increases output at high loads by optimizing valve overlap.

A trailer-mounted diverter tank uses internal diffusers to redirect high-pressure water flow for accurate capacity measurement.

Relocating the hydraulic actuator to the camshaft support plane resolves assembly precision constraints while maintaining high rigidity.

Vertically displaced sub arms and movable switch pins reduce arm width while maintaining balance, eliminating the need for a swing guide.

An integrated tab projection on the valve lifter guide engages an engine block bore, eliminating separate bolts and reducing assembly time.

A variable valve mechanism uses a sliding roller member to transmit cam displacement while reducing friction.

A signal actuator device uses a knurled toothing system to torsionally couple drive shafts and control cams for precise angular positioning.

A deactivating rocker arm capsule integrates a lost motion spring to enable flexible assembly and efficient actuation.

Trapping air in deactivated cylinders reduces fuel vapor draw from the canister, preventing cylinder misfires upon reactivation.

A spring-biased stopper pin prevents total fluid leakdown in hydraulic lash adjusters by maintaining residual pressure for sequential valve actuation.

A variable valve system alternates cylinder deactivation lift amounts to prevent spark plug fouling and bore transformation.

Predictive controller aligns target fuel pressure with anticipated intake air decrease to prevent over-rich mixtures and emission deterioration.

A rotatable shaft drives a contacting element biased by a spring mechanism to actuate latching arrangements in switchable valve train components.

A cooling duct piston uses a lining part to bridge an encircling depression in the basic body, forming a permanent cast joint.

An engine control apparatus adjusts intake valve phases to regulate brake force.

Integrates a centrifugal filter into the output shaft of a camshaft adjuster to separate lubricant contaminants.

Periodic sun gear rotation eliminates continuous power consumption for cam phase maintenance.

A switching element for a valve train uses a bypass to fluidly connect recesses and chambers, eliminating sequential filling delays and pressure drops.

Dynamic oil distribution via switching valve balances motor temperature and friction wear to enhance hybrid vehicle efficiency.

A camshaft phaser employs a resilient counterbalancing member to neutralize bias spring torque during lock pin engagement, reducing axial length requirements.

Variable displacement pump drives camshaft phaser actuation via non-continuous grooves, eliminating separate oil pumps to reduce system complexity.

Segmented drainage shaft reaches remote liquid accumulations in pressurized vessels without depressurizing the pipeline.

A dual cam phaser merges two camshaft control functions into one rotor assembly, reducing device complexity and production costs.