Sparking Plugs TRIZ Cases

Directly attaching an annular ground electrode to the spark plug housing cuts parts and joints while improving heat dissipation and ignition reliability.

A reversed ground-electrode layout moves the discharge gap upstream without a housing through-hole, simplifying assembly and supporting ignition.

A movable insulator and bias device switch spark plug heat dispersal states to limit fouling at low load and pre-ignition at high load.

A glass-filled epoxy spark gap formed in semiconductor packaging creates a low-breakdown air cavity, cutting die area and improving ESD survivability.

Leaner pre-chamber mixture control at high engine load slows flame blow-off to suppress abnormal combustion, oscillation, and noise.

Multiple timed discharges in a pre-chamber spark plug strengthen flame jet ejection and improve combustion efficiency in engines.

A spiral hole pattern and aspect-ratio prechamber concentrate fuel at the spark gap to cut quenching, delay, and autoignition in lean gas engines.

A shielded spark plug cavity with nozzle holes and fuel cooling protects against prechamber heat while preserving efficient combustion.

Active spark discharge heating measures spark plug heat rating from electrode and insulator temperature changes without complex engine tests.

A threaded, conductive-glass electrode joint improves spark plug heat dissipation, durability, and low-cost large-head performance.

Inclined injection holes create sub-chamber swirl flow that extends the spark and strengthens flame jets for better ignitability.

A tapered insulator guides corona discharge to the igniter tip at lower voltage while limiting arcing and electrode erosion.

Opposing clamping forces and matched thermal expansion improve prechamber spark plug sealing, cooling, and electrode life across temperatures.

Optimized pre-chamber volume and nozzle geometry stabilize low-load and cold-start combustion while limiting misfires, heat loss, and pressure rise.

A brimmed center electrode keeps its center of gravity closer to the seal member, reducing vibration-induced looseness in spark plugs.

A chamfered sealing area keeps deposits away from the thread, improving spark plug heat conduction, sealing, and service life.

Electromagnets working with piston magnets reshape piston motion to cut fuel use during idle and low-load operation without sacrificing engine output.

Segmented piston and liner insulation uses reinforced heat-resistant parts and exhaust-gas reheating to cut heat loss, leakage, and thermal shock.

A sample-and-hold circuit tracks spark impulse duration to detect igniter electrode erosion and support timely gas turbine maintenance.

A two-piece adapter encapsulates a standard spark plug to add shielding, sealing, and thread compatibility for aviation engines.

Alternating dual-coil sparks improve lean-burn ignition, raise initial combustion, and help prevent knocking under EGR conditions.

Primary coil current sensing predicts spark plug electrode wear during multi-stage ignition, helping maintain combustion stability and lower emissions.