Internal-Combustion Engine Testing TRIZ Cases
- Aerosol Particle Number Density Monitoring via Diffusion Charging
Diffusion charging and collecting units measure aerosol particle number density through electric current detection.
- Magnetic Sensor Threshold Update Immunity to Disturbances
A magnetic-field sensor recalibrates its switching threshold using oscillation frequency data.
- Supercharger Actuator Diagnosis via Rotational Speed Change
A diagnostic method adjusts a supercharger actuator position and measures the resulting rotational speed change to verify component functionality.
- Gas Sensor Flange Offset Design for Thermal Shock Resistance
Offset flange portions support covers between insulator and housing, eliminating welding joints that degrade under thermal shock.
- Cylindrical Electrode PM Sensor Radial Field Design
Radial electrostatic fields in a coaxial gap ensure uniform soot deposition, resolving tangential field limitations that reduce exhaust sensor sensitivity.
- Wastegate Position Sensor for Turbocharger Pressure Diagnostics
A wastegate position sensor detects displacement to predict expected pressure values during defined engine operating windows.
- Ion Current Sensor for Cycle-by-Cycle Engine Emission Measurement
Replacing expensive chemiluminescence detectors, the ion current sensor measures NOx and CO levels via electrical fields to cut instrumentation costs.
- Engine Bench Torque Control via Intermediate Coupling
An engine bench system uses an intermediate coupling body to redistribute inertia and isolate the dynamometer from engine vibrations.
- Catalyst Ageing Apparatus Using Recirculated Gas Mixture
A catalyst ageing apparatus uses recirculated pure hydrocarbon and oxygen gases to maintain precise chemical proportions during thermal processing.
- Adaptive Engine Stoppage Detection via Variable Crankshaft Timeout
Variable crankshaft timeouts reduce average detection time for engine stoppage, eliminating unnecessary restart delays in stop-and-start systems.
- Internal Combustion Engine Cylinder Pressure Assessment
A method using two pressure sensors to measure cylinder pressure signals for internal combustion engine state assessment.
- Misfire Detection in Gaseous Fuel Engines via Cylinder Pressure Analysis
Deriving combustion energy from cylinder pressure data detects incomplete combustion early, preventing unburnt fuel accumulation and exhaust explosion risks.
- Particulate Measurement System with Operating Condition Correction
A particulate measurement system corrects ion generation signals using vehicle speed and engine torque data to maintain accuracy.
- Optical Spark Detection for Combustion Fault Diagnosis
Replacing mechanical sensors with an optical light barrier, this method records spark duration to reliably detect glow ignitions masked by combustion noise.
- Crankshaft Sensor Reverse Rotation Detection
Period ratio analysis of a standard crankshaft sensor detects engine reverse rotation without additional sensors or complex signal correlation.