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.