Internal-Combustion Engine Testing TRIZ Cases

A camshaft sensor calibration method dynamically adjusts switching thresholds based on magnetic field amplitude to ensure accurate tooth passage detection.

A particulate matter detection element anchors exhaust particles via a rough insulating member, preventing detachment under high gas velocity.

A capacitive particulate matter sensor measures electrode capacitance changes as exhaust deposits accumulate.

Pre-installed reactive devices at the fill pipe opening change color when exposed to hydrocarbons, eliminating remote testing and system disassembly.

Exhaust gas pressure sensing compares measured values against reference profiles to detect variable actuation faults without complex mechanical diagnostics.

A laminar flow water condensation system enlarges airborne particles into detectable droplets using controlled vapor supersaturation.

Gas injection mechanism cleans hole walls and prevents lens misting, resolving accuracy issues caused by fiber cable damage during mechanical cleaning.

Automated RFID reading links filter media to phases, preventing misassignment errors that cause inaccurate emissions measurement data.

A crankshaft speed sensor analyzes torsional vibration orders to differentiate single-cylinder from multi-cylinder misfire events.

A misfire detecting apparatus calculates corrected rotational speed parameters by accounting for inertia speed changing components.

A guiding wall redirects intake air upstream of the sensor branch to reduce particle kinetic energy.

A controller predicts air volume variables using synchronized throttle valve setpoint signals to determine total air quantity.

Spaced ignition plugs detect ion currents before main discharge, resolving interference that obscures pre-ignition signals in multipoint systems.

A rotary encoder system generates position and speed data to enable frequency domain analysis.

Turbine expansion and vacuum pumping replicate high-altitude pressure and temperature to enable accurate engine testing without in-situ travel.

Segmented flow controllers stabilize raw gas flow rates to eliminate concentration fluctuations during catalyst evaluation tests.

Fourier analysis of pipe vibration signals isolates deviation amplitudes to distinguish leaks from pressure noise in piston machines.

Segmented attachment screw secures sensor body flange between bearing surface and external thread.

Segmented compartments merge wire retention and device packaging to resolve size-intensive trade-offs, ensuring reliable environmental protection.

A pressure sensor validation method compares measured differential pressure values against model-based reference signals to verify data integrity.

A misfire detection apparatus computes rotational fluctuation differences at specific crank angles to identify engine anomalies.

Offset gas connections in switch cabinets enable direct component access, resolving maintenance bottlenecks in compact exhaust measurement installations.

A mass airflow sensor recalibration method records output signals while calculating intake manifold mass flow to establish a new transfer function.

ECU calculates inlet and outlet exhaust gas temperature differences to detect missing SCR or DPF components, preventing emission control failures.

A detachable throughflow measuring unit connects to fuel return lines to display flow quantities for high-pressure injector diagnostics.

A detection mapping combines crankshaft rotation waveform variables with road surface state data to determine internal combustion engine operating conditions.

Segmented porous protective layer prevents sulfur adsorption at the diffusive resistance interface while maintaining mechanical strength against thermal shock.