Internal Combustion Piston Engines TRIZ Cases
- Membrane Secondary Air Pump for Exhaust Pulse Synchronization
A membrane secondary air pump synchronizes injection with exhaust pulses to enhance pollutant oxidation.
- Secondary Air Injection Exhaust System for Small Off-Road Engines
A secondary air injection system mixes air with exhaust emissions inside the conduit to trigger an exothermic oxidation reaction.
- Urea Injection Control for SCR DPF Ash Accumulation
A control unit calculates effective filter volume based on ash accumulation to determine precise urea injection amounts.
- Active Grille Shutter Cold-Start Control for Fuel Efficiency
Active grille shutter flaps restrict airflow to raise engine oil temperature during cold starts.
- Cylinder Head Intake Duct Rounded Transition Zone
A flat lower face connects to an annular valve seat housing via a rounded transition zone for smooth airflow direction.
- Exhaust Aftertreatment System with Multi-Zone Gas Sensor Feedback Control
A multi-zone gas sensor array monitors exhaust concentrations to dynamically adjust reductant injection rates across selective catalyst reduction stages.
- Variable Valve Timing Control Arrangement for Turbocharged Piston Engine
A hydraulic control arrangement adjusts inlet valve timing in piston engines to optimize scavenging efficiency.
- Dual Fuel System for Diesel Engines Using LPG Mix
A dual fuel system pressurizes liquefied gas and diesel into a liquid mixture distributed via common rail.
- Nickel-Layered Reactor for Ammonia Heat Storage
A nickel layer on the reactor inner surface suppresses nitridation and hydrogen generation, maintaining precise pressure control.
- Aftertreatment Catalyst Desulfation via Staged Temperature Control
Staged temperature control desulfates oxidation and SCR catalysts while preserving structural integrity.
- Fuel Activation Apparatus Using EMR Waveguides
Electromagnetic waveguides activate fluid fuel within a sealed reactor chamber, reducing harmful emissions and improving energy output.
- SCR Catalyst Segmentation for Uniform Reducing Agent Mixing
A segmented SCR catalyst structure divides the purification unit into slices to ensure uniform reducing agent distribution within compact exhaust systems.
- Turbocharger Wastegate Monoblock Design with Mesh Spacer
A monoblock wastegate employs a mesh spacer to constrain axial movement, preventing leakage under high pressure.
- Flexible Bellows Connector for Exhaust Mixer Assembly
A flexible bellows connector couples exhaust mixer components using spherical joints to enable rotational and positional adjustments.
- Piston Bowl Geometry for Lean Natural Gas Combustion
Geometrically segmented piston bowl directs reactive gas jets to a primary ignition area within the combustion chamber.
- SCR Ammonia Storage Diagnosis via Controlled Urea Injection
A diagnostic system determines maximum ammonia storage capacity in selective catalytic reduction units using controlled urea injection and slip measurement.