Sparking Plugs TRIZ Cases

Optimizing the pre-chamber volume-to-diameter ratio minimizes wall heat losses and improves flame propagation in internal combustion engines.

Wireless RF ignition creates longer plasma sparks to improve dilution tolerance and combustion stability.

Segmented insulator design transfers heat to metal shell while extending spark gap insulation distance to prevent flashover.

Integrating pressure sense passages into the igniter housing reduces assembly complexity and system weight.

Recessed internal electrodes create gas-filled cavities acting as spark gaps, enabling precise breakdown voltage control and directional independence.

Solution-strengthened nickel-chromium-iron alloy electrodes enhance mechanical strength and oxidation resistance.

Tiered firing prongs expand plasma volume while dielectric barriers prevent arcing in combustion engines.

A controlled discharge current prevents spark blow-out in internal combustion engines.

Step-profiled ceramic insulators engage metal shell crimps within defined area and angle ranges to prevent air leakage and insulator displacement.

An angular gasket design featuring intermittent concave portions and convex projections to maintain airtightness.

Varying insulator bore diameters distribute pressing force to reduce breakage risk while maintaining connecting portion durability.

Segmented housing design reduces ground electrode temperature rise by shortening thermal paths, extending service life while maintaining mechanical stability.

Asymmetric vent holes generate swirl flow to scavenge residual gas, preventing soot accumulation and ensuring stable ignition in lean-burning engines.

A spark plug insulator uses a specific radial gap geometry between the leg part and housing projection to suppress discharge.

An annular projection segments the pipe-wall interface into subspaces, containing liquid gasket to simplify sealing without complex mechanical grooves.

Convexly curved fusion boundaries reduce thermal stress between the noble metal tip and central electrode, preventing separation during wear.

An intermediate portion with specific dimensional ratios reduces thermal stress and ensures a secure seal without gaskets.

Segmented ground electrode support arms dissipate heat to reduce wear, resolving thermal management issues in gas engine spark plugs.

A quarter wave coaxial cavity resonator generates corona discharge plasma at a center conductor tip.

Controlled nickel plating crystal structure prevents peeling during bending stress, ensuring corrosion resistance.

An electrode chip alloy containing 40 to 60 mol% aluminum and iridium improves spark wear resistance.

Angled pre-chamber openings direct fuel-air jets to flush residual gas, preventing pre-inflammation and stabilizing combustion.

A spark plug insulator front end features a recess and controlled roughness to manage carbon deposits.

A resilient sheath buffer between spool and coil absorbs thermal expansion differences, reducing stress-induced breakdowns.

A spark plug ground electrode uses a multilayer structure with skin, intermediate, and core portions to join the metallic shell.

Internal fuel flow cools spark plug electrodes, resolving thermal stress that damages components and reduces service life in lean-burn engines.

A spark plug ground electrode with a bulging curved face directs mixture flow into the spark discharge gap, preventing obstruction from widened bent portions.

A movable second electrode sweeps through a combustion chamber to generate multiple ignition sparks across a larger area.

A plug connector uses a high-hardness ring member to increase contact pressure between the rubber seal and insulator.

Plasma ignition enables stable low-temperature combustion in lean air/fuel mixtures by generating a radicalized environment.

A nickel-based electrode alloy containing manganese and rare earth elements enhances thermal conductivity.

A spark plug design restricts seat and protrusion deformation during caulking by optimizing geometric surface area ratios.

A bracket notch fits over a lamp arm to support a light fixture, eliminating complex screw installation and enabling easy fixture interchangeability.

Protruding spark plug head creates a stagnating region to combine flames, resolving electrode wear from high-speed mixture flow.

Internal electrode voids in a spark plug create concentration edges that maintain electric field intensity as wear increases the spark gap.

Vertical exhaust duct routes high-pressure arc flash gases away from equipment to prevent thermal damage.

A spark plug insulator features a radial counterbore that directs electrical discharges away from the metal shell to eliminate side sparks.

A spark plug uses a solid annular gasket with tapered inner sides to stabilize the ignition point position during assembly.

Nickel alloy electrode composition with specific chromium and rare earth elements enhances oxidation resistance.

A spark plug uses an angled insertion section to leave clearance inside the shell; engine vibration then avoids hole-edge contact that cracks the shell.

A spark plug joins an electrode tip to a base material via a laser-welded melt portion with specific geometric ratios.

Segmenting the spark plug resistor into higher center-side and lower terminal-side portions suppresses radio noise while maintaining ignition energy.

An electrode-attached insulator design joins a center electrode to a locking member within an axial hole to expand the exposed volume.

An elastic conductive terminal uses a spherical head to form an annular contact zone, correcting eccentricity and improving electrical connection reliability.

An annular pocket and downward wall protect the gasket from over-compression, maintaining elasticity to prevent blow-by.

A spark plug design positions ground electrodes perpendicular to airflow to stabilize plasma flow and improve ignition reliability.

Laser irradiation shapes carbon nanotube wires into taper tips to boost field emission current density.

A partially-shrouded spark plug design featuring a semi-cylindrical shroud with advanced edge profiles to enhance heat transfer.

Polyamide 6.6 ignition housing reduces engine noise by 1.5 dB and decreases weight while maintaining mechanical strength.

A protective casing for an ignition coil gains stiffness through a spring block section supported on an integrated shoulder.