Internal Combustion Piston Engines TRIZ Cases

A porous foam adsorbent element reduces hydrocarbon vapor emissions in internal combustion engine air induction systems.

Tuned exhaust duct harnesses pressure waves to accelerate inlet fluid flow into the cylinder.

Parallel pilot subchambers ignite fuel to improve stratification and efficiency despite added complexity.

A segmented air intake module uses an electric compressor and dual throttle valves to manage airflow.

Low-pressure fuel sprays on the rotor face reduce overheating while supplemental conduits deliver compressed mixtures to improve torque output.

A linear valve element moves axially through a separating wall in a two-volute turbine housing to control exhaust gas flow.

Intersecting piston sets eliminate complex valve timing mechanisms, reducing device complexity and mechanical stress while maintaining reliable power output.

A flexible elastomeric drain valve regulates condensate flow in supercharging circuits using calibrated spring pressure.

A passage switching valve directs high-temperature exhaust air or low-temperature outside air into the engine intake based on compartment temperature.

Counting pressure signal edges eliminates complex Fourier analysis, reducing computational complexity while maintaining measurement precision for SCR systems.

Integrated rotating cylinder assembly reduces friction losses and frontal area by merging crankshaft functions into a single moving part.

Carrier gas flow amplification maintains temperature uniformity in the honeycomb structure, preventing urea deposits during low-temperature exhaust processing.

Optimized fiber length parameters prevent severing during extrusion, ensuring defect-free cell walls and reliable NOx conversion performance.

Segmented compressors with an air multiplier resolve the energy consumption trade-off by multiplying air mass supply via the Coanda effect.

Dynamic urea dosing maintains optimal ammonia storage across varying temperatures, extending effective SCR life and reducing atmospheric emissions.

Integrating support and fastening functions into a single component reduces part count while minimizing noise from tolerance play.

Abnormality diagnosis unit monitors injection valve and pump duty ratios to detect excessive or insufficient injection conditions.

Axial turbines drive an electrical generator to power a compressor motor, resolving pressure trade-offs by decoupling turbine and compressor speeds.

Diagnostic system decouples inlet NOx errors from reductant injection rate errors using normalized efficiency metrics.

A control unit synchronizes ammonia and nitric oxide concentrations at the selective catalytic reduction catalyst.

Eccentric trough-shaped flaps pivot on a common shaft to reduce airflow obstruction and torsional vibration in engine intake systems.

Replacing the CPE valve, this turbine generates back pressure while recovering exhaust kinetic energy to reduce fuel consumption.

A cruise control system adjusts vehicle speed within a predefined range to optimize fuel consumption.

A metering valve secures its calibration body via a press and material connection to maintain consistent spring force.

Segmenting the chamber via a nozzle-fed pre-chamber overcomes slow laminar flame speed to boost thermal efficiency.

Integrated parallel manifold and catalyst unit reduces space requirements while maintaining low flow resistance for large diesel engines.

Hydraulic diameter optimization balances heat transfer performance against pressure loss while reducing soot blockage risk.

Segmenting the counterweight with a detachable auxiliary plate resolves interference between the exhaust gas treatment device and lifting mechanisms.

A close-coupled particulate filter paired with an electrically heatable three-way catalyst accelerates exhaust gas heating.

Moving the pump outside the tank eliminates residual volume trapped by internal arrangements, enabling complete emptying of the reducing agent.

Segmented piston head protrusions redirect fuel flow paths to prevent spray and flame overlap, reducing intake resistance and improving engine efficiency.

Merging a bypass path into the purification casing reduces system complexity and installation space while extending NOx catalyst life.

Segmented flow paths merge high-pressure manifold gas with cooled downstream exhaust to resolve volume and temperature trade-offs.

Embedding a catalyst-coated support inside the filter channels boosts nitrogen oxide purification while minimizing back pressure.

Partition wall segments airflow to prevent condensate formation that damages compressor impellers.

Transition metal cations on ceria supports reduce nitrogen oxides to nitrogen gas, addressing thermal stability and efficiency trade-offs.

Dynamic reductant pressure control optimizes mixing efficiency and reduces sidewall deposits while maintaining low backpressure across varying engine loads.

An expansion tank mixes hot combustion gases with fresh air to cool the mixture and dissipate pressure waves.

Mounting a pressure sensor on an intake pipe outer surface via an arm member resolves narrow space interference behind the engine.

Remote elastomer sealing isolates the seal from high temperatures, limiting leakage below 0.2 cc/mm at 1500 kPa.

Self-pressurizing hydrostatic bearings eliminate external high-pressure supply lines, reducing friction and wear in rotary sliding vane machines.

A display unit shows surroundings and delayed engine stop functions for work machines.

A vehicle fuel system mixes natural gas with liquid fuel to create a homogeneous fluid mixture for engine injection.

A palladium-ceria-zirconia solid solution expands the operation window of three-way catalysts through enhanced oxygen storage and mobility.

A piston bowl with a toroidal surface and cone portion promotes efficient fuel-air mixing within the combustion chamber.

Dual auxiliary windings with different turn ratios manage capacitor charging thresholds to resolve energy efficiency and power availability contradictions.

A stop-start system informs drivers that engine inhibition is normal operation through visual and audible cues.

A two-stroke engine scavenging system uses asymmetric passages to balance air discharge across temperature gradients.