Internal-Combustion Engine Testing TRIZ Cases

A pressure sensing device detects periodic oscillations in a positive displacement pump inlet to determine engine rotational speed.

A gas sensor uses a powder filler member with a higher thermal expansion coefficient than ceramic holders to maintain pressing force.

A detection system calculates lambda error between measured and estimated air-fuel ratios to identify intake line leaks.

A control unit identifies misfiring cylinders by measuring engine vibrations generated during operation.

An element dummy guides annularly-mounted members into position, preventing displacement and protecting the sensor's end portion film during vertical descent.

A NOx sensor diagnosis device calculates expected concentration values to verify sensor validity against detected readings.

An unbalanced accessory mounted on the crankshaft output generates centrifugal force to counteract rotating assembly deflection.

Integrated electronic sensors detect flight vibrations to guide real-time trim balancing, eliminating time-consuming ground-based maintenance iterations.

A misfire monitor detects cylinder anomalies using crankshaft torsional vibration signals to tune liquid fuel injection rates for stable combustion.

A vehicle controller calculates front and rear wheel speed differences to detect rough road conditions using signal processing techniques.

A misfire detection device adjusts determination positions based on crankshaft rotation speed to improve accuracy across varying engine loads.

A mobile compressed natural gas vessel supplies fuel to a compressor while an unloader recirculates output gas to maintain optimal pressure.

A pressure sensor monitors the blow-by gas breather circuit to identify pipe disconnections through signal processing.

A sensor module acquires cylinder pressure data while an offset diagnostic module determines sensor offset by comparing actual and reference pressures.

Threaded engagement between segmented temperature reducing members allows removal of incomplete combustion products without compromising sealing integrity.

A textured shroud with a tortuous path directs liquid to the sensing area while diverting gas bubbles away from ultrasonic sensors.

A control device segments the knocking window by crank angle to integrate vibration signals for accurate detection.

Gas analyzer system supplies make-up gas to maintain flow rate accuracy.

Adjusting adapter flange inertia aligns test bench natural frequency with engine operating range, enabling accurate drive train vibration simulation.

Smartphone accelerometers capture velocity changes during acceleration and deceleration phases to eliminate engine fatigue from chassis dynamometers.

Distributed sensor nodes eliminate expensive ship-mounted installations while confirming fuel switching compliance through accurate real-time monitoring.

A bypass catalytic converter redirects exhaust gas during engine cold starts to achieve rapid light-off temperatures.

A propulsion torque calculation method estimates correction torque from internal measurements to resolve noisy shaft signals.

A movable measurement gas distributor connects directly to inlet coupling elements via insertion.

A detection method analyzes pump pressure profiles to identify emulated SCR catalytic converter systems.

A diagnosis controller calculates Energy K and Loudness standard deviation indices from engine noise data to classify combustion states.

Switchable holding mechanism aligns warped ceramic sensor elements, ensuring airtightness despite tight dimensional tolerances.

Segmenting terminal films exposes base portions that adhere to protection members, preventing separation under moisture stress.

A probe delivers compressed air to specific filter sectors while a gauge measures pressure differentials.

A cable bushing system uses thermoplastic fluoropolymers to fill the space between a protective sleeve and connection cables.

An infrared quality sensor determines compressed gaseous fuel pressure by measuring absorbance at preset wavelengths.

Calculating top and side surface cylinder forces from pressure sequences to determine combustion noise parameters.

A single pressure sensor calculates volumetric energy release to detect combustion anomalies in variable compression ratio engines.

Statistical signal processing detects purge valve blockages by correlating engine mixture parameters with valve state changes.

A gas sensor activation system ascertains heater resistance and voltage consumption to allocate the correct operating mode for the sensor element.

A dynamometer control device separates transfer functions to generate torque current commands.

A movable exhaust probe maps gaseous species distribution across catalyst surfaces.

Differentiating and averaging fuel injection signals removes noise while preserving waveform shape, enabling accurate detection of characteristic points.

Segmenting adaptation value determination into idle and partial load stages reduces diagnostic time while maintaining measurement precision.

A Pt alloy electrode with dispersed granular voids maintains low electrical resistance at high temperatures.

Segmented sensing assemblies allow replacing faulty elements while recovering functional housings, reducing material waste and maintenance costs.

Removes initial carbon dioxide, then oxidizes remaining carbon to measure total and solid content without complex calibration.

A method determines total cylinder pressure using crankshaft angular position and fuel injection quantity to enable precise real-time control.

Calculation unit determines driving operation style and route for vehicle testing.

A real-time model-based observer segments the intake manifold into acoustic sections to estimate in-cylinder pressure using fluid dynamics transfer functions.

Modifying crankshaft speed signal amplitude resets vibrational monitoring to prevent false detections from dual mass dampers.

A diagnosis apparatus detects compression leaks in three-cylinder engines by deriving crankshaft angular acceleration during expansion strokes.

Replacing measured sensor values with calculated model values simulates diagnosis, fixing evaluation time when result values attain a defined threshold.

A downstream particulate sensor detects soot accumulation to diagnose filter loading and loss of filtration efficiency.

Replacing mechanical sensors with a disposable Langmuir probe resolves precision limits in self-ignition timing detection.