Internal Combustion Piston Engines TRIZ Cases

A fuel preheater transfers heat from engine coolant to superheat diesel fuel before injection.

A vehicle body structure routes an exhaust additive pipe through a floor panel step portion formed by a cross member.

A bypass duct recirculates air through a cooler to maintain turbocharger speed, reducing response lag in internal combustion engines.

Segmented housing design isolates corrosive urea from high temperatures while magnet armature ensures precise piston movement.

Radial grooves in turbocharger bearing end surfaces buffer exhaust gas pressure and actuator power, reducing axial shaft vibration and noise.

Tube covering extensions on the jacket wall shield tubes from erosion and stress concentration at inlet openings, extending component lifespan.

A tubular-to-annular flow transition in an annular catalytic converter resolves the trade-off between exhaust gas mixing quality and thermal retention.

A cylinder head flame deck profile shields the pre-chamber tip from combustion heat through thermal absorption.

Cerium and zirconium oxide coating stabilizes palladium nanoparticles on an aluminum oxide support, maintaining conversion efficiency at low temperatures.

A low-pressure storage volume absorbs pressure fluctuations between pre-supply and high-pressure pumps.

Radially inward projections on a turbine diffuser wall cause flow separation to increase fluid velocity between rotor blades.

Housing wall openings create suction that draws reactant into the flow, solving uniform mixing challenges in internal combustion engines.

Cyclic heater activation prevents additive deposits, maintaining heating performance while minimizing energy consumption.

Catalyst additives reduce soot accumulation, minimizing excess fuel injection needed for regeneration.

Nested decomposition chambers enable concurrent multi-path treatment, reducing space claim while maintaining emission reduction efficiency.

Vented drying of sealing paste prevents interface separation between adhesive and coat layers under thermal stress.

Segmenting washcoat zones with varying platinum concentrations reduces inlet poisoning while maintaining light-off performance and durability.

A parallel catalytic converter arrangement uses a cross-connection pipe and outlet valve to route exhaust gas for rapid secondary unit heating.

A single pump supplies reductant through series metering manifolds to maintain equal pressure across multiple delivery points.

Integrating a pre-cooler within flat tube intervals reduces collecting box dimensions and overall volume.

A turbocharger valve attachment mechanism uses a positioning pin to align the stem during welding.

A piston cavity with a convex surface directs non-combusted fuel to promote oxygen mixing, preventing accumulation in the deepest portion.

An asymmetric valve body uses airflow force against restriction portions to maintain stable opening positions and reduce power consumption.

A secondary heat source prevents vaporizer freezing during cold starts, enabling reliable waste heat utilization for efficient fuel delivery.

Temperature-based cycle management reduces noise and fuel consumption while maintaining engine readiness.

Curved walls in the surge tank gently redirect airflow to reduce pressure loss and improve distribution uniformity.

An error-dependent test routine adjusts additive dosage to verify exhaust system faults without triggering unnecessary residue accumulation.

An always-open leakage path conveys condensate to prevent pooling and maintain pressure sensing accuracy.

Partial catalyst coating on segmented exhaust filter walls reduces back-pressure while enabling rapid light-off for gasoline engines.

A shape memory alloy heat engine converts thermal energy into mechanical motion through phase transitions.

Flow diversion and division in a thermoelectric generator increase thermal energy conversion efficiency while lowering manufacturing costs.

A turbocharged exhaust system introduces a reducing agent upstream of the high-pressure turbine to ensure effective mixing before catalytic conversion.

Independent resistive heating elements activate only when submerged in urea, reducing electric consumption and extending component lifespan.

Dynamic voltage adjustment prevents electrode damage from arc formation while maintaining effective soot particle ionization.

A motor-driven supercharger thrust bearing uses a small-diameter disc-shaped collar to reduce shaft overhang and improve lubrication.

Comparing downstream exhaust temperatures identifies partial or complete filter disassembly, overcoming structural constraints and model inaccuracies.

A tapered lower portion and insulated upper zone direct expanding frozen reductant to prevent structural damage.

A graphite spacer surrounded by a guard wall increases friction to dampen vibrations, preventing chattering noise and downstream component damage.

A gas-permeable element upstream of an adsorber in parallel exhaust lines reduces leakage flow and simplifies ceramic carrier mounting.

A dual-opening injector uses a bypass path to manage fluid pressure and flow.

A diesel exhaust collector uses dual estimation methods to track particle accumulation.

Downstream condenser separates water vapor from recirculated exhaust gas, preventing condensate damage to engine components during cold operation.

Segmented inlet and outlet valves manage pressure fluid flow to resolve valve lift adjustment precision trade-offs at high engine frequencies.

A removable lid secured by a V-clamp enables quick filter replacement in exhaust after-treatment systems.

A compact exhaust gas purifying device merges bypass and main passages within a single casing structure.

A fuel addition system uses a control device to detect fuel temperature and adjust discharge through a pressure reduction valve.

A heat throttle in the compressor-side flange thermally decouples the bearing housing, reducing turbine heat transfer that lowers compressor efficiency.

Spaced webs create a valley that increases stiffness without inducing additional thermal stresses at the chin area.