Valve Drives TRIZ Cases

A coaxial cam crankshaft hydraulic actuating system drives output pistons to open intake valves.

Linear spring regions anchor into phaser recesses, eliminating axial tangs to simplify powdered metal manufacturing.

Radial plunger movement through a cam surface opening reduces starting load while maintaining lubricity.

A cam lobe member with a segmented push part oscillates smoothly between positions using an elastic bias.

Cam actuation drives a sliding valve body while system pressure loads primary and secondary seal rings against sealing surfaces.

A control device manages electromagnetic solenoid actuator energization to seat engagement pins on cam grooves.

A hydraulic drive system uses a spring accumulator to store and release energy for valve actuation.

A modified intermediate gear compensates for crankshaft to camshaft center distance changes, restoring precise tooth meshing and preventing timing drive wear.

A hydraulic camshaft adjuster replaces sliding contact with a rolling ball bearing to minimize mechanical friction losses.

A camshaft adjuster screw boss supports a spring and secures the side cover rotationally through integrated radial mounting features.

An integrated socket module eliminates external reset brackets, reducing system volume while maintaining constant valve lift and preventing uneven wear.

A hydraulic motor distribution slide valve slides sealingly against a flat plate to control fluid flow between chambers.

A cam position sensing device and control module differentiate transient from steady state conditions using dual filters to calculate estimated air values.

A hydraulic control arrangement pressurizes a piston unit to eliminate mechanical lash in engine valve timing systems.

A press-fitted rotor sleeve joins the vane rotor to the fastening bolt without gaps.

A continuous variable valve duration apparatus adjusts opening time via a rotating cam device and control shaft.

A Z-twin engine uses a central shared camshaft to drive angled side valves across horizontally opposed cylinders.

A continuous variable valve lift apparatus adjusts cam profiles via a rotating control shaft and worm gear drive.

A mechanical camshaft replaces hydraulic circuits to control valve lift and deactivate cylinders, reducing packaging space.

A spring element between the camshaft and crankshaft provides torque to drive auxiliary units.

Joint stopper portion abuts relative rotating portion to prevent axial sliding movement and abrasive wear in the valve timing controller.

Integrated spring retainers eliminate fasteners, reducing assembly complexity while enhancing load cycle durability.

A hydraulic system actuates locking pins to secure a brake tappet lash assembly, enabling compression braking without adding external components.

Adjustable intermediate gear bearing journal compensates for center distance changes in camshaft gear trains.

A variable valve mechanism uses a control arm with multiple pin holes to adjust the valve opening and closing amount.

Axially displaceable cam elements switch between valve lift profiles to enable cylinder deactivation.

A hydraulic adjustment accumulator uses a movable storage piston to vary fluid volume for continuous valve stroke control.

Segmented cam lobes cut weight while maintaining lubrication and stability.

Mechanical coupling between pistons transfers motion while magnets correct dead center positions, preventing standstill caused by seal friction.

Hydraulic master and slave pistons actuate an articulate rocker arm for engine valve control.

An auxiliary inlet preheats a volumetric expander casing to evaporate condensed fluid, eliminating startup difficulties.

An asymmetric planetary carrier support prevents rotator inclination and thrust loads, securing valve timing adjuster durability.

Valve lift switches connect input and output rocker levers to enable cylinder deactivation and compression release braking without adding separate mechanisms.

A continuous variable valve lift apparatus uses a spiral bearing to transmit camshaft rotation for dynamic valve control.

Concentric grooves and ball bearings convert sliding contact into rolling motion, enabling 16000 rpm operation without endplay or needle bearing failure.

Electromagnetic actuators drive nested camshafts to resolve packaging complexity while maintaining rotational accuracy.

Divergence flow passage maintains lubrication film under sprocket load during cold starting.

Merging separate housings into one unit resolves fastener accessibility issues while maintaining rotational support for dual overhead camshafts.

An endless slotted-guide track on a rotating switching shaft moves sliding pieces along the camshaft axis, reducing axial length and component count.

A rotatable valve assembly driven directly by the engine camshaft replaces linear poppet mechanisms in internal combustion engines.

An insertion member fits into communicating shaft and cam grooves to align the movable cam device, resolving machining errors that degrade rigidity.

A variable inlet valve control arrangement uses a bevel surface to adjust pressure release timing, ensuring adequate air supply during low engine loads.

Axial groove channels lubricant to high-load cam roller contact, reducing friction and wear in engine lifters.

Cam guide protrusions with varying thicknesses move axially between pins to prevent interference during valve lift switching.

Pre-machining the adjusting cam element prevents profile jumps and wear caused by manufacturing tolerances in adjustable camshafts.