Internal-Combustion Engine Testing TRIZ Cases

Remote sensor table uses air gaps to isolate sensors from excessive heat and vibration, reducing fault codes and extending operational lifecycle.

Test kit discards cylinder tests when idle period parasitic losses exceed a threshold, ensuring accurate fault identification.

Catalyzed layers on optical windows oxidize soot at activation temperatures, preventing fouling that degrades measurement accuracy.

Analyzing crankshaft RPM patterns detects impending detonation events, allowing throttle reduction to prevent engine damage and avoid false alarms.

Beam splitting and retroreflection extend the optical path length, improving precision for low-concentration gas measurements.

A catalyst deterioration detection system switches applied voltage to an air-fuel ratio sensor during rich control phases.

A misfire detection device sets different determination values for each cylinder based on combustion control deactivation states.

A misfire determination apparatus adjusts detection thresholds using rotation fluctuation data to identify combustion anomalies in internal combustion engines.

A pressure sensor processing unit calculates correction times from combustion peak durations to offset voltage signals.

A control device calculates angle detection cycles using an arithmetic processing device and storage unit to isolate rotational fluctuations from misfire signals.

A soot load estimation system fuses delta pressure and model data to determine accurate particulate filter loading.

Calculating delta pressure based soot load estimates during active regeneration distinguishes genuine filters from mufflers, ensuring regulatory compliance.

A smart multimeter system continuously monitors vehicle electrical parameters to detect abnormalities and predict potential malfunctions.

Laser Doppler velocimetry measures engine output shaft rotation speed directly, eliminating resonance and inertia compensation limits in dynamometer control.

A pressure sensor calibration method detects incorrect readings by monitoring electromagnet current changes during piston movement.

A knock sensor detects cylinder head acceleration to monitor valve timing and lash variations in internal combustion engines.

Speed-dependent monitoring ranges detect low-speed load deviations that fixed limits miss, ensuring accurate warnings across all operating speeds.

A magnetic field attracts metallic wear debris in gas flow to generate detectable signals for engine monitoring.

Measuring air flow past bearing components via the oil cavity identifies crankcase over-pressure sources while the turbocharger remains installed.

A control unit measures induction pipe pressure before and after activating a tank venting valve to detect defects.

Laser-induced breakdown spectroscopy measures engine oil consumption by analyzing plasma emission signals, avoiding complex mechanical sampling systems.

Segmented insulating layers with controlled porosity prevent platinum diffusion while absorbing thermal stress to extend heater lifetime.

A movable sensor test system adjusts radial positions to measure internal diameters of hollow bodies with high precision.

An upstream air-fuel ratio sensor detects cylinder imbalances using diffusion resistance layer signal variations.

A fault simulator modifies the Nernst voltage signal from a broadband lambda probe to test engine control device diagnostics.

A combustion control method adjusts a reference level using variable weighting factors to detect irregular engine events.

Determines combustible vent gas flow rate by cross-correlating engine RPM data with a valve reference signal during brief interruptions.

A control unit compares electrical potential at a lambda sensor terminal against predefined limits to detect wiring faults.

A misfire determination device calculates a first-order difference between rotation speeds at specific crank angles to isolate combustion fluctuations.

Directional antennas transmit radio frequency signals through exhaust gas to detect substances, eliminating heating elements and reducing power consumption.

Controller operates secondary power sources periodically to verify reliability while minimizing resource consumption and noise.

A method estimates the MFB50 combustion index by analyzing drive shaft speed harmonics through a simplified inverse mechanical model.

A detection system calculates lambda error values and EGR flow rates to identify circuit faults.

Machine learning controller analyzes torque load and fuel consumption fluctuations to detect pump cavitation without vibration sensors.

A dual throttle position sensor diagnostic system detects correlation and range errors to adjust airflow and maintain engine operation.

A gas sensor uses a recessed holder portion to situate the porous protection layer rear end within the structure.

A diagnostic device prohibits offset diagnosis during rapid exhaust flow changes to stabilize sensor readings.

Segmenting sensor acquisition and computation cycles reduces computational load while suppressing swell phenomenon in engine intake air volume control.

Time-slot communication merges sensor lines into a single bus, reducing cabling complexity while guaranteeing real-time response latency.

Dynamic mode switching in air mass sensors manages heating element power to protect sensor elements from oil droplet accumulation.

A thermal flowmeter bypass passage uses a protrusion to throttle air flow and divide the channel into sections with varying sectional areas.

Machine learning generates power assistance check coefficients from engine acceptance test and flight data, resolving time delays in coefficient recalculation.

A misfire detection device adjusts determination thresholds based on deactivation counts to prevent false positives during cylinder control.

A rough road determination device compares single pulse amplitude fluctuations against predetermined values to identify road conditions.

Electronic control unit sets maximum display rotational speed higher than actual engine speed during upshifts.