Electrical Control TRIZ Cases

A hydraulic pump control device adjusts engine target speed for load torque changes, balancing responsiveness with fuel efficiency.

Exhaust valve deactivation raises low-load heat for two-cycle diesel catalysts.

This case uses one absolute pressure sensor for DPF backpressure and altitude, enabling power limits and regeneration control.

This case uses idle pressure pulsation and stored normal values to diagnose intake manifold sensor responsiveness without driver input.

This case uses catalyst temperature and activated volume to release engine power while maintaining emission compliance.

A solenoid locking mechanism holds EGR pump rotors at zero speed during engine braking.

This case models cylinder wall heating, coolant flow, and convection to improve fresh air mass calculations across changing conditions.

This case uses engine coolant to condition intake air and EGR gas, supporting low-cetane fuel ignition across cold starts and low loads.

An air injection pipe uses vehicle motion and exhaust pressure to burn soot passively, reducing THC and CO without increasing NOx.

An EGT sensor and controller limit cylinder gas exchange and raise turbocharger boost to protect catalyst performance and durability.

The pump anticipates future water injection demand, balancing rapid response with lower energy use during standby.

This case compares expected and measured downstream air-fuel signals under controlled upstream conditions to improve sensor fault detection.

This injector control approach preserves noise reduction by adapting preceding injection to total fuel across injector and ECU variation.

A vehicle control unit raises start sound in circuit mode while adjusting fault thresholds to preserve detection accuracy.

A VDE mode isolates cylinder exhaust paths before fuel shut-off, improving six-pattern detection of exhaust gas sensor degradation.

The processor checks vehicle location for poor ventilation and warns users to move before exhaust accumulates during external power feed.

A throttle coupler and pressure sensor support precise fuel delivery while reducing fuel-system complexity and cost.

Upstream and downstream air-fuel sensors guide a lower catalyst warm-up threshold, reducing HC-related exhaust deterioration.

An electric-motor phase mechanism advances cam timing near engine stop, limiting fresh air to the catalyst while reducing restart delay.

An electronic control unit delays regeneration, purges biofuel, and switches to petroleum fuel to protect emission control components.

This case uses periodic, cylinder-selective injection changes to clean soot from combustion chamber pressure sensors and restore accuracy.

This engine case uses intermittent flushing-gas injection to cool and clean direct injectors, limiting thermal degradation and deposits.

This case coordinates throttle closure, turbine vanes, and cam positions to increase brake torque while limiting transition torque jumps.

Wastegate and turbo shaft actuators create recirculated airflow that transfers heat to the catalyst brick before engine operation.

This engine control case uses a rich-side air-fuel peak to restart feedback promptly and prevent emissions from worsening after fuel cut.

A controller adds decompression strokes and switches engine modes to improve low-torque efficiency and exhaust heat.

Sequential electromagnetic valve control reduces fuel pressure quickly while stabilizing the fuel passage and limiting valve wear.

Combustion feedback limits fuel injection when intake air supply falls.

A detector triggers repeated EGR valve opening and closing during engine stop, clearing foreign matter before restart.

This case uses fuel evaporation in low-pressure EGR to cool exhaust, limit thermal stress, and support stoichiometric combustion.

A model-based calculation estimates secondary air flow from manifold pressure, temperature, and boost data, reducing hardware complexity.

The ECU learns deposit effects across throttle openings to estimate effective area and improve transient inflow and air-fuel control.

Atmospheric sensors calculate oxygen content from ambient conditions, enabling engine and ozone control without GPS or cellular data.

This engine uses independently timed upper intake and exhaust valves to balance displacement, power output, efficiency, and wear.

Separate valves sequence hydrogen before natural gas, minimizing residual fuel in the intake line and suppressing engine damage.

This case uses motor current, engine state, and oil temperature to estimate motor angle and improve cam phase interpolation accuracy.

This case uses staged hydrogen and water injection to control combustion temperature, reduce NOx, and protect lubricant integrity.

Sensor feedback regulates hydrogen fuel pressure for dependable APU power.

The ECU compares reference and new correction factors by cylinder to identify corrosion and avoid replacing functional injectors.

A controller lowers intake pressure at low output to discharge hydrogen from the crankcase through a coupling passage.

This ship gas purging case routes nitrogen directly through the engine and fuel line, reducing engine-room piping while preventing backflow.

Temperature-based valve timing traps hot burnt gas, improves fuel evaporation, and reduces unburnt HC and soot after cold start.

A control unit schedules and verifies aftertreatment pre-heating before engine start, reducing cold-start emissions and energy waste.

An allocation unit uses vehicle state to adjust CPU and memory resources, sustaining functions while reducing power consumption.

A controller models fuel evaporation from diluted crankcase oil and adjusts injection to maintain air-fuel ratio and reduce emissions.

Throttle-only control misses inlet pressure changes; feedback guides short-term fuel or ignition corrections in two-stroke engines.

Acoustic sensors convert engine signals into frequency spectra, enabling accurate process-attribute detection and responsive engine control.

An electric motor tows the combustion engine while throttle control manages oxygen and temperature for smooth, protected filter regeneration.

A timing map advances ignition while limiting preignition, smoke, knocking, and instability.

An intake control valve alternates natural aspiration and supercharged air to reduce fuel use without sacrificing compressor displacement.

A controller filters operator pedal input signals during deceleration fuel shut-off to confirm sustained driver intent before resuming fuel injection.

An adjustable secondary exhaust cam opens the valve during compression to reduce auto-ignition risks and lower operating temperatures.

An exhaust purification system estimates catalyst temperature using pre-stop and start-up thermal data.

A controller calculates predicted coolant temperature using a heat exchanger model and compares it to actual sensor readings.

A control unit learns atmospheric pressure using intake air pressure measurements at specific crankshaft positions to determine throttle valve state.

A vehicle controller outputs engine auto-start commands based on gear shifts and battery parameters to optimize fuel economy.

A diesel fuel injection system uses a bypass passage to mix cool tank fuel with hot return flow, regulating pressure through a temperature-responsive valve.

A vacuum chamber and throttle switch detect simultaneous brake and accelerator input to force engine idle.

A hydraulic compression ignitor uses a floating piston to compress an air-fuel mixture in a dedicated chamber.

A perturbation control mechanism alternates the NO2-NOx ratio above and below a reference value to maintain selective reduction catalyst performance.

Clipping low-displacement commands via a solenoid spill valve resolves accuracy variability in direct injection fuel pumps.

Airflow meter humidity sensor corrects intake air signals using temperature data to mitigate engine heat transmission effects.

A fuel injection valve control device adjusts solenoid drive pulse timing and holding current levels to match individual valve behaviors.

A purge ejector assembly uses a nozzle and check valves to manage evaporated fuel flow direction within an engine intake system.

A pump increases fuel tank pressure to improve vapor recirculation during refueling events.

A control method suppresses oscillations in partial exhaust gas recirculation valve actuators.

Mounting accelerometer on ignition coil iron core detects knocking without adding ECU weight.

A tank ventilation valve opens to pneumatically connect the fuel vapor storage system and intake pipe, enabling rapid operational checks.

A variable turbine geometry controller limits exhaust back pressure to reduce gas exchange losses and accelerate torque build-up during transient operation.

A controller transforms asymmetric exhaust gas sensor responses into symmetric signals to adjust fuel injection parameters accurately.

A control apparatus calculates fuel vaporization timing to manage injection termination.

Time-dependent high pressure sensing identifies the start of a pressure drop to locate continuous injection sources.

A fuel injector coil drive measures current strength to adjust voltage pulse duration for precise actuation.

A control unit manages engine restart via a motor-engine combined state to synchronize torque transfer.

A controller adjusts generator electrical loads based on detected fuel types to maintain optimal power distribution.

A fuel reservoir uses a pressure-flexed separation device to divide volumes, enabling single-pump delivery of distinct fuels through isolated conduits.

A turbocharger wastegate actuator applies voltage corrections based on estimated magnetic fields to maintain precise valve positioning.

Diesel-rich cavitation scavenges carbonaceous deposits from dual fuel injectors, resolving the trade-off between natural gas economy and nozzle fouling.

Recirculating blow-by gas lubricates the needle and seat of a direct injection valve, reducing wear caused by gaseous fuel injection lack of lubrication.

Retarding injection timing and reducing gaseous fuel substitution mitigates auto-ignition of end gases while preserving engine power.

Real-time cylinder pressure feedback controls dual pulse injection timing to reduce NOx and ammonia slip emissions without urea systems.

Liquid injection verifies downstream particulate matter sensor operation by depositing fluid to change conductivity, resolving filter trapping issues.

A controller calculates purge concentration using pump RPM and rear pressure to determine target flow rates.

A fuel-saving driving system calculates target vehicle speed using GPS positioning and slope data to optimize fuel injection timing.

A control system adjusts intake air flow and fuel injection to raise catalyst temperature during cold starts.

A control device calculates the low pressure exhaust gas recirculation mass flow by subtracting fresh air mass from total compressor mass.

A controller monitors ion current peaks across spark plug electrodes to estimate combustion phasing angles.

A wastegate valve control system determines the fully closed position to compensate for thermal deformation in turbocharged engines.

Adjustable fuel pressure module constrains spring length via threaded mechanism to compensate for degradation and maintain consistent engine performance.

Inflection point calibration determines fuel pump wear and tolerance deviations using motor phase current measurements.

A control device learns the relationship between EGR valve opening degree and actual flowrate to adjust recirculation accurately.

Crankshaft angular velocity measurement replaces voltage thresholds to accurately judge battery deterioration under high cranking loads.

A controller monitors intake oxygen concentration differences during EGR valve position changes to verify sensor functionality.

A vehicle control system generates a recovered signal from sensor output using time constant products to align magnitude and phase with the input.