Electrical Control TRIZ Cases

Neutral display is delayed until clutch disengagement is confirmed, with torque limiting to prevent unintended vehicle movement.

Dual time-constant filtering finds signal intersections to average pulsating measurements accurately without extra sensors or added phase lag.

Shearable links and independent RVDT connections keep an aircraft throttle operable when one mechanical path jams.

A three-position rotatable valve balances exhaust flow between volute passages and bypass paths to improve boost, efficiency, and NVH.

A balance pressure chamber offsets throttle pressure difference, enabling reliable turbocharger surge prevention with a smaller electromagnetic coil.

Randomized impedance sampling breaks synchronization with noise, improving oxygen sensor temperature control and long-term reliability.

Humidity sensing corrects the gas constant in engine intake pressure calculation, improving manifold pressure accuracy under changing air conditions.

A single coil actuates multiple valve members in sequence, widening fuel injection range while reducing valve size and complexity.

A BSFC-based valve control strategy keeps dual-volute turbocharger flow areas balanced to use exhaust pulses efficiently while limiting engine backpressure.

A strongarm, clamp, and damping grommet steady the shutoff valve solenoid to limit vibration wear and prevent false tripping.

Parallel check valves and a restrictor enable crankcase leak checks without solenoids, cutting cost, wiring, and engine space.

Preemptive torque reserve control boosts engine torque during direct drive-reverse shifts to prevent stall, reduce shock, and hold engine speed.

Crankshaft speed irregularity reveals compression ratio changes, enabling precise variable-compression engine diagnosis and fault detection.

Low air density can overload merged hydraulic pump flow, so confluence is limited by altitude and engine speed to preserve torque and lift performance.

Relay-switched check circuits replace microcomputer safety logic, blocking unsafe engine starts and showing switch states on a display.

Physics-based virtual sensors estimate piston friction and engine torque from cylinder pressure and exhaust heat where direct sensing is impractical.

A nested diagnostic line detects false airflow from misinstalled or leaking blow-by vent hoses, protecting crankcase venting reliability.

A rotating metal nozzle penetrates the exhaust wall to create a gas-tight sensor mount without pre-drilled openings, welding, or extra machining.

A single cockpit alert combines engine and onboard system alarms to speed pilot assessment of critical engine damage.

A pressure-driven vapor valve opens beyond the relief threshold to vent excess fuel tank pressure to the canister while keeping the unit compact.

A control module compares engine speed targets during directional shifts to maintain power and limit excess torque without a torque converter output sensor.

Inflection-point timing in drive voltage and current enables precise electromagnetic valve opening and closing control despite noisy inductance changes.

A speed sensor and start-up limiter keep engine speed below clutch-in, then release on detected acceleration and deceleration.

Dual RAM buffer switching lets ECU data blocks transfer and nonvolatile memory writing run in parallel while preserving check-value verification.

A four-sector controller linked by control and actuation buses centralizes aircraft subsystems to cut weight, simplify maintenance, and improve flexibility.

Monitor high-side and low-side gate signals to verify injector shutdown before engine start, without fuel injection or tiny current sensing.

Periodic DAC excitation turns tiny LSB output errors into a detectable AC signature, enabling accurate fault diagnosis with lower sampling demand.

Voltage monitoring in both high-side and low-side paths enables fast short-circuit detection across a load without extra switching stress.

A digital compensator detects heater PWM edges and pauses pump-current updates to reduce noise and stabilize oxygen sensor measurements.

A fast-ramp soft shutdown keeps ignition coil current under control when it is below the transistor limit, helping prevent unwanted rises and spark risk.

Short PWM pulses are detected and stretched to valid timing windows, filtering spurious injector signals that can trigger control-circuit latch-up.

Variable A/D sampling timing captures multiple valve-drive waveforms to detect fuel injection singular points beyond fixed time resolution.

A fast-ramp IGBT feedback loop prevents unwanted coil current rise during ignition soft shutdown, avoiding spark and thermal damage.

Variable A/D sampling timing captures multiple valve signal traces to detect injection singular points beyond fixed time resolution.

Heater PWM edges can corrupt pump current readings, so this digital compensator briefly holds output to preserve stable oxygen sensor control.

Parallel diode-resistor gate branches prevent MOSFET transconductance and force the load to high impedance during controller faults.

Register-based output driver configuration lets one ECM support high-side, low-side, boost, and bridge loads without hardware redesign.

Adaptive ADC fetch timing minimizes current-control error in inductive loads while reducing controller processing overhead.

Stored clock timestamps let an ECU verify soak timer operation after power-off, catching off-state timing faults without keeping control active.

A shared comparator and switched timing data generate multiple timing signals with less circuit area and fewer CPU interrupts.

A fixed CRC remainder makes untampered vehicle memory data resolve to zero, enabling reliable detection of partial rewriting and falsification.

Cross-interference between NH3 and NOx sensor signals helps detect sensor faults, supporting NOx reduction while limiting ammonia slip.

A shared comparator and reference-data scheme synchronizes multiple output targets with less timer hardware, fewer CPU interrupts, and lower power.

Active sound design creates and outputs customized driving sounds while managing low-frequency vehicle noise across changing engine RPM ranges.

Frequency-domain combustion analysis detects misfires quickly, then sequential cylinder cutoff pinpoints the faulty cylinder without extra sensors.

Dynamic purge valve control adjusts flow rates by measuring hydrocarbon concentration to prevent engine richness and maintain emissions performance.

Engine control system adjusts injection period and ignition advance to determine timing.

A blow-by gas supply device routes warm intake air through a bypass passage to preheat recirculated gases before they enter the compressor.

A glow plug temperature estimation method uses cylinder pressure sensors and polytropic compression models to calculate real-time thermal states.

An air flow meter uses estimated ranges to validate sensed values against electromagnetic interference noise.

Algorithm compares actual injection quantity against target values to identify wear, eliminating unnecessary time-based replacements.

A fuel injection control device calculates energization time corrections using area correction on valve current.

Temperature control devices condition air and fuel before combustion, resolving inefficiencies from unmanaged thermal loads.

Feedback control maintains diesel particulate filter regeneration temperature within optimal range despite injection characteristic variations.

A catalyst estimator system derives oxygen storage estimates using upstream and downstream sensor signals to adjust the air-to-fuel ratio.

A supervising control module determines execution commands for redundant engine actuators to maintain synchronized data transfer.

A controller adjusts auxiliary chamber fuel supply valve timing using feedback from non-return valve state and rotation angle detectors.

Predicting lambda deviations via a mathematical model enables early fuel adjustments, reducing emission delays during dynamic engine operation.

A fuel injection rail pressure control method determines an initial setpoint based on temperature differences between the rail and engine.

A control device adjusts fuel injection timing relative to ignition to ensure flame contact with secondary spray.

Feedforward offset anticipates mechanical load changes in diesel engines, reducing speed deviations before feedback control reacts.

A switching mechanism selects between smoothed and direct learning modes to resolve the trade-off between reliability and convergence speed.

A controller adjusts ignition timing using feedback control to maintain target combustion conditions.

Normalizing spark timing with sigmoidal functions improves model correlation accuracy, enabling efficient fuel consumption optimization.

Active fuel supply management reduces diesel consumption while maintaining engine performance.

Pressure monitoring detects steam formation in water lines, enabling rapid pump activation that prevents engine knocking and reduces energy consumption.

A diagnostic system dynamically adjusts hardware test conditions based on vehicle usage patterns.

A recirculating cooling fuel flow through the high-pressure fuel pump prevents vapor bubble formation and maintains volumetric efficiency during operation.

A model predictive control module selects optimal target values to coordinate engine actuators.

A fuel system monitoring method compares pressure differentials to distinguish pump degradation from filter clogging.

A vehicle control system sets different target accelerations for pedal depression and return to manage drive source torque.

Adjusts engine injector lookup tables using torque loss and combustion efficiency data to align actual fuel injection quantities with expected values.

An evaporated fuel processing device uses an ejector and purge passage branching to manage fuel supply in supercharged engines.

Pre-computed throttle maps synchronize engine and transmission speeds, reducing disengagement time and extending fuel cut duration.

Sequentially switching injectors from divided to single mode before increasing pressure prevents air-fuel ratio deviations during deposit removal.