Internal-Combustion Engine Testing TRIZ Cases

A starter current sensor determines engine rotational speed using a relaxation process to eliminate electrical noise.

A dual-element cover configuration directs gas flow to the detection unit while managing water condensate discharge.

A responsiveness determination unit calculates exhaust gas sensor output changes to identify abnormality conditions.

A testing device detects intake tract coking by controlling variable valve timing and monitoring rough running characteristics.

Lambda probe monitors engine mixture richness to identify vapor filter loading, enabling accurate hose pinching diagnosis without extra hardware.

A hemispherical charging unit creates a symmetric electric field to charge aerosol particles efficiently.

A pressure-test station applies internal air pressure to oil filters for rapid leak detection along seals and seams.

Decomposing nitric acid in a reactor controls the NO2 to NOx ratio, resolving generation gaps in burner-based exhaust replication systems.

A vehicle computer detects crankshaft sensor types and adapts signal formats for processing.

Heating the UEGO lambda sensor above 600°C and polarizing pins distinguishes short circuits from open circuits, resolving inaccurate fault discrimination.

Injecting phosphorus and zinc additives simulates real-world catalytic poisoning, replacing heat-only bench tests that lack accuracy.

Electronic pressure sensors replace mechanical valves in this portable tester, eliminating manual adjustments and reducing system complexity.

Optimizing the thermal conductivity ratio of a porous protective layer to 1.6 or higher reduces sudden cooling cracks and improves waterproofing performance.

Diagnostic system uses filtered exhaust pressure readings to detect faults in EGR and turbocharger systems.

An observer system calculates the catalytically active area factor of an SCR catalyst to track state variables.

High-pass filtering isolates higher-frequency signal components from gas sensor outputs during steady-state engine operation.

A semiconductor strain sensor uses multiple Wheatstone bridges to detect orthogonal strain components on a single substrate.

A controller calculates the ratio between modelled and measured crankcase pressure to detect breather hose abnormalities.

Dynamic time constant adjustment removes resonance interference from distortional elements, ensuring precise misfire detection across varying rotation speeds.

A measuring module integrates test sensors and a communications device into the test object to transmit measured values wirelessly.

A catalyst deterioration determination system measures exhaust gas oxygen concentration to calculate oxygen storage capacity.

A method monitors crankshaft speed deceleration gradients during compression strokes to identify glow ignition events using a crank position sensor.

Segmented terminal surrounding members hold protruding pieces against terminal metal fittings to prevent twisting under vibration.

A control unit assumes full battery charge to test idling stop functions without waiting for actual charging cycles.

Mathematical model estimates engine-out NOx using cylinder pressure and intake oxygen to enable accurate lean NOx trap regeneration timing.

A pressure sensor uses a heat dissipation member to conduct thermal energy from the transmission fluid to the container wall.

A virtual monitor injects diesel exhaust fluid into the exhaust stream to assess formulation accuracy.