Internal Combustion Piston Engines TRIZ Cases

Segmenting the heat exchanger into distinct zones manages the NO to NO2 ratio while recovering thermal energy from exothermic reactions.

A perforated partition maintains a precise gap between the showerhead and non-planar substrates, preventing washcoat accumulation in grooves.

Double-walled turbine housing directs exhaust flow through internal stack pipe to increase axial velocity uniformity at the catalyst inlet.

A fuel saving driving diagnostic device analyzes accelerator pedal opening and shift operations to evaluate driving efficiency.

Dynamic brake effort thresholds prevent unintended engine shutdowns during stops and optimize restart timing based on estimated vehicle mass and road gradient.

An adaptive heating strategy modifies electrical energy input according to catalyst aging, minimizing hydrocarbon emissions during cold starts.

A single actuator drives two exhaust valves via synchronous lever movement to reduce component weight.

A gravity-fed duct delivers filtered air from a lower air box to a higher turbocharger, reducing pressure loss and maintenance complexity.

Piezoelectric actuator lift varies open nozzle hole count, resolving slow mechanical speed and complex dual-fuel valve requirements.

Variable valve timing system protects electric motor from overheating by dynamically adjusting reference values based on accumulated power supply.

A dynamic exhaust porting valve adjusts flow obstruction to increase gas velocity via the Venturi effect.

An exhaust-gas burner uses a cooling circuit within the outer wall to exchange heat with dosing and ignition units.

Segmenting generators into stackable containers reduces physical footprint while enabling incremental capacity addition for data centers.

Trained neural networks detect anatomical landmarks and calculate distances to prevent bone cement leakage during percutaneous vertebroplasty.

A dual battery starter system provides extra power to the starter motor during engine cranking.

Segmented inner exhaust flow prevents biuret formation by insulating urea from cooler walls.

A water pump injects cleaning liquid into the EGR cooler gas inlet while the engine runs.

Dual pressure sensors detect fluid presence to prevent crystallization blockages.

A fuel preheating device uses a nested heat exchanger to rapidly raise liquid and gaseous fuel temperature.

Ramping EPAS motor current conserves energy for engine restart while preventing voltage flair and steering wheel jerk.

Electric heater replaces hydrocarbon injection to increase NO2 generation and reduce temperature gradients across the exhaust conduit.

Integrated DOC-DPF apparatus reduces precious metal catalyst usage while maintaining high NO2 conversion rates and thermal stability.

A reductant filter module uses a vertical venting line to separate gas bubbles from the liquid stream before pump intake.

Segmenting the catalyst into high and low ceria layers resolves the trade-off between peel resistance and purification performance in straddled vehicles.

Elongated spout design minimizes spillage and pressure buildup during aqueous urea solution transfer, ensuring ISO 22241 compliance.

A first charge air cooler performs gas-gas heat exchange to warm intake air using compressed exhaust gas.

A virtual ammonia sensor detects slips using Fourier transform analysis of nitrogen oxide signals.

A control unit manages fuel injection to an oxidation catalyst for diesel exhaust purification.

A segmented exhaust cycle drives a charge pump via pressure waves, reducing fuel consumption and improving low-speed response.

Segmented catalyst devices with distinct thermal inertias reduce nitrogen oxides at low temperatures, lowering fuel consumption.

A diesel engine fuel injection chamber separates premixing from combustion to reduce noise, fuel consumption, and smoke in compact designs.

A segmented exhaust gas recirculation system uses a multi-position flap valve to direct flow through separate heat exchanger strands.

A selector valve routes air through a heat exchanger that uses engine waste heat to warm intake air, eliminating costly external preheating systems.

An SSC-SCC system manages vehicle spacing using Smart Cruise Control braking logic to sustain coasting mode operation.

Spherical geometry and torsion spring preload reduce noise and wear in turbocharger wastegate linkages under high temperatures.

A blade race limits radial extension of vanes in a rotary vane engine, reducing wear while maintaining compression efficiency.

Peaked flow-regulating members on outlet pipe walls generate longitudinal vortices to stabilize airflow into measurement sensors.

Segmented catalysts with secondary air injection decompose ammonia, resolving fuel-rich engine power and NOx cleaning efficiency trade-offs.

A pump recirculates blow-by gas from the crankcase to the air intake system for engine ventilation.

Additive-modified plastic enhances thermal conductivity, resolving low heat transfer limits in urea tank heating systems.

A venturi carburetor draws low-pressure gas via pneumatic effects, resolving fuel mixing complexity and improving standby engine starting efficiency.

A fluid injector design reduces reductant volume to prevent freezing damage.

Spring-loaded articulated carriers distribute heating elements to thaw frozen exhaust agents evenly.

A noise reduction structure inserted into hollow fastener channels alters internal airflow to suppress aerodynamic sound generation.

Toroidal turbine housing vanes disrupt rotational exhaust flow to achieve uniform catalyst contact, resolving packaging constraints in close coupled assemblies.

A turbine wheel with a blade-to-backwall stiffness ratio between 41 and 44 reduces high cycle fatigue in dual volute turbochargers.

A hybrid vehicle control module manages power distribution to prioritize electric travel and delay engine startup until the catalyst reaches activation temperature.

A butterfly throttle valve partitions the intake passage into distinct main and tumble flow paths to guide air effectively.

Segmenting the aftertreatment system into rich and lean zones stabilizes lambda control, preventing emissions breakthroughs during dynamic engine operation.