Electrical Control TRIZ Cases

Correcting broadcast engine torque with actual fuel injection data offsets injector drift and fueling noise for more accurate compliance calculations.

Cylinder pressure and combustion-center feedback adjust hydrogen blend and EGR to cut NOx and methane while keeping combustion stable.

Voltage-drop compensation corrects NOx sensor readings when heater leads and housing temperatures distort the sensor's thermal profile.

A logarithmic coil-voltage ratio with moving averages detects injector solenoid closing time more robustly under low signal-to-noise conditions.

Monitored speed gradients trigger ignition and injection timing correction to hold crank-angle targets and prevent peak pressure damage.

Water injection can delay combustion and distort torque estimates; this case adds injection-based correction for smoother shifting and cleaner engine operation.

Water injection into the intake tract enables later ignition timing for abrupt torque reduction while avoiding misfires and supporting low-fuel shifting.

Cylinder-sensor feedback estimates actual fueling and corrects injector drift to preserve fuel substitution accuracy and engine reliability.

Parallel tank supply and brake-event hydrogen pumping cut pump energy use while preserving injection pressure and vehicle range.

Generator-mode motor loading raises engine load before test water injection, enabling reliable nozzle diagnosis without low-load misfires.

Actual speed and torque points guide engine speed adjustment to keep fuel use near the target area under changing loads without gear changes.

Compressed hydrogen or air fed through a turbocharger boosts oxygen supply, helping hydrogen engines meet torque demand with better combustion efficiency.

By tracking ignition timing and speed variance, this case updates fuel setting during idle to improve acceleration without complex valve-closing control.

An inverted characteristic map sets charge, lambda, and water injection corrections to keep exhaust-side components below temperature limits.

Using coolant temperature with intake air and exhaust flow improves hydrocarbon deposition estimation in exhaust catalysts and supports timely heating control.

Route-based load prediction adjusts ammonia cracking flow to improve multi-fuel engine efficiency while reducing cracker wear and emissions.

A scavenge valve and split exhaust paths let a DEB engine balance turbocharger efficiency, catalyst flow, and backpressure.

Two pressure sensors split gaseous fuel lines into zones, helping pinpoint leaks between shutoff valves and injectors before engine startup.

Pulsed gaseous hydrogen injection draws air between spray pulses to improve in-cylinder mixing, combustion predictability, and efficiency.

By switching among Order 1.5, Order 1, and Order 3 based on speed and gear, this case cuts driveline torsional NVH in 6-cylinder engines.

Pre-stored pause-period correction maps replace real-time residual flux calculations, cutting controller load in multi-injection fuel valves.

A movable piston mechanism raises compression during cold start and low load to ignite ethanol reliably in heavy work vehicles while cutting emissions.

Battery-driven load steps and sensor baselines reveal engine health in hybrid generator systems, enabling predictive maintenance and sequencing.

During fuel cut, intake airflow is raised and its increase rate is tapered with catalyst temperature to prevent catalyst cracking from thermal shock.

During fuel cut, intake air is raised by catalyst temperature, brake state, and gear stage to cool the catalyst without torque shocks.

A learned hydraulic loss coefficient estimates injector flow without direct sensors, reducing calibration effort and helping predict maintenance needs.

A staged pilot injection approach cuts pilot fuel quantity and carbon content while maintaining stable ignition of high-pressure gaseous fuels.

A relation-table control approach adjusts motor speed, torque, and pressure to cut wastage while maintaining oil-gas separation efficiency.

Removing spoon regions from injector pulse-width maps avoids pintle rebound errors and improves closed-loop fuel delivery consistency.

A model-based PCV pressure check compares predicted and actual values to detect small crankcase vent leaks without extra sensors.

Brake- and temperature-based intake air control cools the catalyst during fuel cut without weakening engine deceleration feel.

During fuel cut, intake air is raised to cool an overheated catalyst, then extra fuel removes stored oxygen to protect NOx purification.

During fuel cut, intake air is increased and ramped more slowly at high catalyst temperature to limit thermal shock and catalyst cracking.

A two-loop throttle valve controller uses position estimation and speed feedback to offset static friction and prevent limit cycles.

By estimating catalyst oxygen storage during gear shifts, injection resumes before saturation to cut fuel use and maintain NOx treatment.

Sequential brake activation and delayed main event deactivation limit intake counterflow, valve train loading, and turbo surge.

Selective control of donating and non-donating cylinders cuts NOx with cooled EGR while preserving diesel engine efficiency under changing loads.

Component characteristic maps replace extensive engine bench parameterization, cutting control setup time and computing demand for new engine types.

Pressure-drop monitoring and fuel ratio control help a multi-fuel engine detect gas leaks, maintain combustion efficiency, and reduce emissions.

Multiple NOx detectors compare exhaust concentrations to compensate NO2 variability, improving SCR reductant control and emissions accuracy.

Radial piston-bowl protrusions split and redirect low-pressure hydrogen jets before ignition, improving mixing, limiting NOx, and reducing flow losses.

Vision and pressure sensing detect reservoir fluid release by comparing headspace flow and fluid consumption, enabling timely vehicle response.

Coordinated turbo speed and turbine flow control avoids high cycle fatigue during engine braking while maintaining back pressure and engine performance.

Unburnt H2 is routed to the ammonia slip catalyst during cold starts, enabling low-temperature NOx conversion when the SCR is still below threshold.

A controller uses expansion ratio thresholds to position VGT vanes within a wear-reduction range, limiting exhaust force and extending durability.

A dual hydrogen injector layout uses a low-quantity valve at idle to avoid overfueling while maintaining high-flow supply for engine load changes.

Using intake temperature, humidity, and pressure, this case controls water injection to cut NOx while avoiding condensation and water ingress.

Maximum-voltage camshaft phasing establishes a known limit position so engine synchronization can be achieved after shutdown uncertainty.

Using filter loading, pressure, and catalyst temperature, this case controls exhaust composition to keep engine smoke invisible.

A separate fuel supply port and retarded valve opening suppress hydrogen backfire while reducing unburned fuel discharge.