Internal-Combustion Engine Testing TRIZ Cases

A vehicle identification system triggers physical interactions and compares internal and external sensor detection values to confirm vehicle identity.

A computing device calculates exhaust gas flow and temperature using inlet air moisture data.

A leakage detection device controls blow-by gas flow through a PCV valve to maintain engine stability during diagnostic testing.

Dynamic threshold adjustment prevents false misfire determinations during mode transitions by adapting to rotation fluctuation characteristics.

A ratio calculation unit compares intake air amounts from a flowmeter and pressure sensor across supercharging regions to identify leakage abnormalities.

Segmented models calculate cylinder bore distortion to improve measurement precision without increasing device complexity.

Interposing a low-conductivity insulation member between the boss and sensor prevents overheating while maintaining vibration detection accuracy.

A fuel pump health assessment system measures rail pressure against expected profiles to detect damage.

An engine test box replicates vehicle electrical interfaces, eliminating temporary wiring complexity during external engine overhaul.

A gauge screws into a tapered spark plug shell to locate the ground electrode via line contact.

A misfire detection device segments rotation signals into frequency bands to isolate inter-cylinder components for accurate engine monitoring.

A purge line blockage detection system monitors fluid flow rate against a threshold after reducing internal pressure to identify obstructions.

Smith Predictor compensates for exhaust gas sensor time delays to stabilize closed-loop fuel/air ratio measurement and response speed.

A non-intrusive method monitors exhaust gas sensor degradation using time delay and line length of responses during air-fuel ratio changes.

A residual oxygen sensor system corrects signal offsets using upstream and downstream measurements to maintain accurate air-to-fuel ratios.

Controller modules command efficiency tests and monitor NOx conversion to determine aging values.

A particle sensor diverts a gas sub-flow to protect optical access from exhaust contamination.

Adjusts actuating power distribution via dynamic weighting to resolve controller wind-up effects during dynamic engine testing.

An integrated diagnostic unit calculates cranking RPM from voltage drop data, eliminating manual calculations and reducing operator skill requirements.

Segmented dual HEGO sensors detect cylinder-specific air-fuel imbalances to reduce tailpipe emissions.

A misfire determination system estimates torsion element rigidity to correct rotational speed signals for accurate engine fault detection.

A control unit manages engine operation by measuring the temperature difference between combustion chamber wall sites.

Pulse drive circuit detects wire breakage and short anomalies in resistive loads using voltage and current monitoring.

Segmenting electrodes allows measuring leakage currents through a guard electrode, compensating for condensation errors to ensure reliable soot detection.

A pipe internal pressure sensor detects pulsation waveforms within a breather pipe to determine its connection state across varying engine loads.

A modular valve seat gauge uses a self-centering support mechanism to align electronic measurement probes automatically.

Curved throttle surfaces minimize vortex generation and pressure loss to maintain laminar air flow for accurate sensing.

Simulating altitude and temperature variations during testing resolves the contradiction between prediction accuracy and costly empirical data collection.

A particulate matter sensor calculates mass and flux using conductance second differentials during active zones.

A gas feed unit uses shut-off valves and an outflow nozzle to deliver sample gas to the measurement unit.

A straightening grid with one crossing region and a mesh member stabilizes air flow entering the measuring device.

A dilutor mixes exhaust gas with dilution gas to enable continuous particulate matter mass measurement.

Sensor unit measures electrostatic capacitance changes to differentiate water from particulate matter, preventing sensor damage during condensation events.

A determination device adjusts misfire detection thresholds based on partial fuel cut-off execution states.

A pressure-measuring plug uses a channel structure to guide gas flow and protect the sensing membrane from harsh combustion environments.

Executing diagnostics during open valve flow dominates ghost noise, resolving measurement precision issues in exhaust gas recirculation systems.

Removable modules store and output sensor data to a main unit, enabling individual repair without replacing the entire system.

A misfire determination device isolates combustion fluctuations from rotation speed signals to detect cylinder anomalies.

A fuel cut execution control module stops engine fuel supply based on rotation speed and load thresholds.

Remote sensing system segments vehicle specific power into multiple bins for statistical emission analysis.

Calibrate fuel injectors using exhaust temperature measurements downstream of the burner to compensate for drift and maintain precise fuel delivery.

A controller system calculates crank angle acceleration to correct detection errors in internal combustion engines.

Parallel diodes in the circuit reproduce non-linear current-voltage characteristics, resolving simulation inaccuracies from simple resistor models.

Removably attachable ultrasonic sensor filters external noise via acoustic sealing to monitor cylinder valve health without in-cylinder access.

A pressure sensor in the intake pipe determines ambient air pressure by measuring differential values across an open throttle flap.

A diagnosis device estimates compressor damage using cumulative supercharging pressure data.

A misfire detection device uses downstream NOx concentration changes during reducing agent addition to identify engine faults.

A powertrain control module adjusts evaporative emissions leak detection thresholds using global positioning system location data.

A diesel exhaust urea dosing system uses pressure sensors and a control module to monitor injection fluid flow.

A state determination device executes engine analysis using learned mapping data to identify operational states.