Valve Arrangements TRIZ Cases

An integrated camshaft design reduces component count and manufacturing costs while maintaining independent intake and exhaust valve timing control.

A dedicated auxiliary conduit and valve channel exhaust energy to a turbine, maintaining turbocharger speed during load transitions.

Dual exhaust tracts direct high and low pressure pulses to separate turbomachines for optimized energy extraction.

An integrated wedge-like projection eliminates separate retaining rings, reducing assembly costs and rotational instability in high-pressure fuel pumps.

A hydraulic valve spool sensor uses a Hall effect detector to measure linear displacement via magnetic field angle changes.

A controller increases oil pressure to a transient level before actuating valve stopping mechanisms.

Segmented sintered parts create distinct fluid pathways that improve sealing while maintaining positioning flexibility.

A controller estimates intake-valve-closing temperature to switch between compression and flame propagation combustion modes.

A variable oscillating cam mechanism controls valve timing and lift through an intermediate lever driven by dual cam profiles.

A stop element fixes a support element to constrain valve lift below two millimeters, reducing structural complexity and latching forces.

An electric cam phaser control system adjusts phase angles using motor driver and target modules.

A variable valve duration cam mechanism uses a hydraulic slider to adjust the relative phase angle of the first cam portion.

A castellation assembly uses a lost motion spring to float the upper piece above the lower body.

Segmented hydraulic piston-cylinder units control exhaust valve timing, eliminating reliability defects from shared oil ducts and reducing wear.

A rocker arm latching arrangement uses a retainer to provide fluid communication between oil supply and lock pin bores.

An isobaric energy recovery device pressurizes raw water using a positive-displacement piston mechanism driven by high-pressure reject.

Segmented valve bridge levers prevent unintended hydraulic lash adjuster extension during engine braking events.

A pressurized fluid coupler uses a check valve and radial port to manage decoupling forces.

Counter-rotating crankshafts cancel mass forces, reducing vibration and noise while maintaining a simplified parallel structure for hybrid applications.

Head cover guide members engage rocker arms to determine axial positions, eliminating spring load issues and vibration noise during maintenance.

A valve housing recess retains a detectable component, allowing external sensors to verify positioning accuracy without visual access during blind installation.

Control device issues enable signal based on current process sequence, preventing disruption during high-demand operations.

Pressure-driven microfluidic valves adjust channel resistance to redirect flow, replacing bulky mechanical equipment with integrated pneumatic actuation.

A valve timing vane incorporates a chamfered axial end surface to lower contact pressure against the rear plate.

A rocker arm axial locking mechanism uses a spring tongue engaging a groove to secure position.

An electric machine rotates the internal combustion engine in reverse to move a vehicle backward.

Control device calculates target air quantity and ignition timing to compensate for variable valve timing effects on torque.

A bidirectional latch pin assembly with a stepped nose enables stable switching among three positions using hydraulic and electromechanical actuation.

Stepped rotor base integrates locking pin bore to secure cam timing, eliminating startup oscillation and reducing assembly weight.

Redesigned branching point guides the actuating element along an extended common track section, preventing damage during reverse rotation.

A mechanically controllable valve drive uses a reduction gearing system to adjust gas exchange valve lift positions via an eccentric element.

Segmented rocker arms enable internal EGR and engine brake strategies without increasing device complexity or torsional stress.

Segmented locking members and lost motion springs enable flexible actuator placement while reducing parasitic losses in internal combustion engines.

Tungsten disulfide coatings on cam follower assemblies reduce frictional losses and required oil flow while maintaining wear resistance under high loads.

A cam follower sleeve end acts as an anti-rotation device to prevent plunger rotation.

Eccentric timing shaft adjusts valve events, resolving complexity trade-offs for small engine applications.

Segmented liquid air and fuel injection phases manage cylinder temperatures and vibration while preventing fuel freezing.

Adjusting fuel injection quantity during cam profile switching maintains stable exhaust composition and minimizes undesirable emissions.

Asymmetric latch pin nose with beveled reliefs prevents nesting in the groove, reducing switch response time by clearing oil supply blockage.

An integrated dam creates a reservoir that passively retains oil around the fuel pump tappet, resolving high-side mounting lubrication gaps.

Differential signal processing distinguishes intake and exhaust phases to resolve camshaft position ambiguity in four-stroke engines.

A control module detects crankshaft reference position by measuring fuel pressure variations in the injection rail using a hydraulic pump and sensor.

Axial bearing element engages camshaft groove to eliminate notch effect and enhance durability.

Hall effect sensors detect camshaft slider pin position to verify actual operating mode, preventing engine failures from stored command discrepancies.

Self-centering support elements eliminate manual adjustment time and error-prone alignment when measuring wave-shaped workpieces.

Alternating cam holding and rotation controls prevent opposite-direction shaking during locking pin release.

A stepped cam mechanism uses reaction forces to hold valve lift positions without continuous motor rotation.

A controller adjusts intake and exhaust valve duration and timing using CVVD and CVVT apparatuses for dynamic engine operation.

A switching rod with leaf springs actuates multiple finger followers in a variable valve drive.