Electrical Control TRIZ Cases
- Modular EGR Mixer With Convergent-Divergent Nozzles for Low-Pressure Delivery
Convergent nozzles entrain exhaust gas under low-pressure conditions, while turbulent mixing supports engine efficiency and lower knock tendency.
- Aftertreatment Catalyst Preheating for Zero NOx Cold-Start Emissions
Cold-start SCR catalysts stay below conversion temperature; a heater and pump warm the aftertreatment path before engine operation.
- Indirect EGR Flow Measurement Using Turbocharger Data
Direct EGR meters can add cost, restrictions, and failure points; this case calculates flow from turbocharger and engine data.
- Two-Stroke Opposed-Piston Air Boost Control for Altitude Efficiency
A controller dynamically adjusts blower operation, pressure ratio, and air-to-fuel ratio to preserve fuel economy across altitude and ambient changes.
- Resonance-Based Fluid Supply for Multi-Liquid Combustion
Resonance material rearranges liquid molecules while unified control coordinates multiple fluid units for improved combustion efficiency.
- Heavy-Duty NOx Sensor Diagnostics Using Dual-SCR Feedback
Dual SCR stages and downstream feedback support NOx sensor diagnostics during normal heavy-duty truck operation without disrupting DEF control.
- Location-Based Two-Stroke Engine Calibration via Exhaust Valve Control
Regional fuel variation can force manual recalibration; location-based maps adjust exhaust valve positions for steadier engine performance.
- Fuel Injector Bypass and Boost Voltage Control for Engine Starting
During cranking, bypass and boost circuits help large fuel injectors overcome spring force and battery voltage drops for reliable starts.
- Cylinder Head Temperature Feedback for Hydrogen-Natural Gas Engines
Variable hydrogen supply can disrupt combustion and emissions control; cylinder head temperature feedback helps regulate engine operation.
- Engine Controller for Motorized Crankcase Scavenging at Shutdown
Motor-driven forced induction scavenges the crankcase after shutdown, helping remove moisture and condensation during frequent start-stop operation.
- Marine Engine Cylinder Pressure Monitoring for Real-Time Diagnosis
Multiple cylinder sensors capture and analyze pressure data in real time, reducing manual interpretation errors and supporting immediate marine engine corrections.
- Single-Driver Fuel Injector Control for Dual Valves
A shared injector driver actuates two electronically controlled valves, reducing drive circuits and control-module complexity.
- Dual CVVD Engine Control for GPF Regeneration
Retarding exhaust valve opening and advancing closing raises exhaust temperature to accelerate GPF soot combustion during forced regeneration.
- Fuel Injector With Magnetic-Permeability Zoning for Gaseous Fuel Flow
Different-permeability actuator regions guide magnetic flux through the armature, helping a gaseous-fuel injector deliver higher pressure and flow.
- Venturi Pump Diagnosis With ELCM And Fuel Tank Feedback
Pressure changes complicate venturi-pump diagnosis; ELCM and fuel-tank feedback enable testing while the engine is off.
- Gas-Fuel Supply Device With Low-Pressure Oil Lubrication
Closing the shut-off valve lowers delivery-pipe pressure so oil maintains lubricity without a high-pressure pump, simplifying gas-fuel supply.