Internal Combustion Piston Engines TRIZ Cases

An intake-port secondary injector with a sealed manifold mount enables dual-fuel retrofit while reducing fuel accumulation, leakage, and redesign.

A two-stage sub-chamber and gas injection layout speeds ignition and raises in-cylinder pressure when using flame-retardant fuels.

High- and low-pressure inert gas purging clears ammonia from large engine fuel lines, cutting leaks, corrosion, and trip risk.

Compressed air at two temperatures is injected into a two-stroke cylinder to stabilize ignition, cut emissions, and improve low-load efficiency.

A spherical closing element and metallic sleeve improve media separation in dual-fuel injectors, preventing liquid fuel leakage and gas entry.

A ceria-alumina-magnesia composite support keeps platinum dispersed during high-temperature hydrothermal aging, preserving exhaust catalyst function.

Segmented cylinder clearances absorb thermal expansion near the press-fit zone, preventing plunger sticking and preserving fuel discharge.

Heating the SCR device to sublime deposits and measure ammonia lets the control unit recalibrate urea buildup estimates and avoid unnecessary regeneration.

Using fast and slow adversarial noise in a GAN, this case improves face-swap detection accuracy, recall, and generalization.

Adjustable nozzle vanes in a twin-flow turbine housing preserve exhaust pulse energy and cut backpressure for better gasoline engine efficiency.

By integrating the electrovalve, heat exchange pipe, and sensors, this urea sender unit cuts piping, saves space, and eases assembly.

Mode-switching ignition control advances mid-range timing to prevent output and acceleration drop during handheld engine cutting loads.

A valve-controlled intercooler balances intake cooling and pressure to cut pumping loss, suppress knock, and improve hybrid engine efficiency.

A separate solid-fuel combustion chamber with controlled air bypass helps internal combustion engines use slow-burning fuels with lower emissions.

Motor-driven turbocharger swirl improves treatment-fluid mixing and catalyst heating in the injection housing without added heaters.

A Ranque-Hilsch cyclone tube cools turbocharged intake air without water, lowering combustion heat while avoiding added system complexity.

A transverse turbulent mixture flow in the pre-chamber improves scavenging and speeds ignition near the spark plug under lean-burn conditions.

Using alpha alumina with oxygen storage material helps three-way catalysts retain activity after ageing above 900°C while reducing PGM sintering.

Radial protrusions and cavities around a pre-chamber gas valve absorb heat from reverse flow, helping prevent backfiring and re-ignition.

A separate upstream exhaust heater uses central and edge electrodes to warm gas uniformly after cold start while simplifying assembly.

Theta alumina with OSC material keeps Pd/Rh dispersed after high-temperature ageing, improving HC, CO, and NOx conversion with lower light-off.

A separate carrier-ring guide device lets fixed turbine blades be swapped by orientation, improving turbocharger adaptability without VTG complexity.

Hard episode training improves few-shot image recognition accuracy and stability while reducing reliance on costly labeled samples.

Exhaust-pipe warm-up is used to confirm pressure piping is ice-free before pressure-sensor diagnosis, avoiding freeze-related errors.

A toroidal multi-port exhaust valve varies port coverage with engine speed to limit fuel-air loss and improve two-stroke compression.

Sulfur-containing organic precursors and microwave heating keep Pd and BaSO4 nanoparticles closely distributed, improving NOx conversion after aging.

Stepwise clipping and attenuated Gaussian noise help distributed learning protect node privacy while reducing noise error and accuracy loss.

Using exhaust enthalpy difference to trigger heater activation, this case improves SCR temperature control while limiting fuel use and CO2 emissions.

High-temperature regeneration restores sulfur adsorption while a catalyst bypass protects downstream methane oxidation catalysts from poisoning.

A parallel filter-catalyst layout shortens SCR exhaust packaging while preserving NOx reduction and making filter replacement easier.

Clocked vane overlap at twin-volute tongue tips improves scroll separation, cutting exhaust leakage, back pressure, and pumping work.

A helmet-mounted camera captures snapshots, detects crash images, and sends alerts faster than manual electric bicycle accident reporting.

Ambient air is introduced during compression to cool bearings and shafts while preserving vacuum levels in a rotary piston compressor.

CNN classification and entropy analysis quantify visible and invisible driving information, helping prioritize traffic cues for safer, more efficient driving.

Inclined gutter and return surfaces capture and discharge condensed water while reducing moisture scatter and supply air pressure loss.

Separately controlled air and EGR pumps balance intake pressure, mass, and gas composition to suppress abnormal combustion while preserving engine power.

Synchronized rotary valves and a sealing grid cut exhaust energy loss and leakage in a hypotrochoidal rotary piston machine.

A heat-shielding plate moves the seal region away from the turbine tongue to preserve sealing and fastening force under thermal deformation.

Model predictive control uses temperature feedback to optimize hydrocarbon dosing for aftertreatment regeneration, avoiding fuel waste and overheating.

Metal overbased detergent additives in engine oil suppress LSPI in spark-ignited direct injection engines while preserving lubrication and durability.

A heater placed in the water jacket warms the cylinder liner to improve fuel vaporization while preserving block strength and coolant flow.

Reconstructed frames are fed back to retrain the video coding filter, reducing compression distortion and improving coded image quality.

Dual contact areas and a compressed non-metallic gasket maintain hydrogen injector sealing despite wear, extending service life and limiting leakage.

Integrated fluid passages cool turbocharger and exhaust components, cutting shielding needs and simplifying high-temperature exhaust layouts.

Onboard water electrolysis feeds hydrogen and oxygen to the pre-chamber, improving jet ignition quality without separate hydrogen storage.

Segmented fin joints in an engine aftercooler improve charge-air heat exchange while reducing thermal stress at tube header joints.

An elevated-then-lowered fuel return pipe keeps the pressure reducing valve soaked in fuel, reducing abrasion and easing common rail mounting.

Pressure-vessel catalyst cannings and pipe compensators enable compact exhaust cleaning with bypass flow, lower mass, and reduced vibration.

A Pd-rich soot filter between two SCR catalysts replaces a separate ammonia slip catalyst, cutting NOx re-make, N2O, cost, and backpressure.

Boosted air cools a center-mounted SCR injection nozzle in counter-flow, limiting heat damage while preserving urea mixing and NOx purification.

Vehicle motion mixes stratified diesel exhaust fluid to ensure accurate concentration sensor readings and proper reductant injection.

A thermoelectric generating unit uses a nested tubular member inside a plate-like hollow member to circulate a heating medium directly against the transducer.

Pressurized gas purges urea from the dispensing device toward the pump, preventing decomposition and clogging while keeping the pump primed.

Active cooling channels circulate fluid through the injector body, preventing heat damage while maintaining central positioning for efficient DEF injection.

Staggered prechamber nozzles focus laser energy to ignite lean mixtures, reducing NOx emissions.

A cartridge-based engine drives a flywheel via piston motion to store kinetic energy for portable power generation.

An axial stop secures a contour sleeve to reduce vane clearance and prevent jamming from thermal expansion.

Heating intake air with an electric compressor prevents condensate degradation while enabling higher exhaust gas recirculation rates.

A knock reduction system selects engine operating zones to compute an octane scaler for adaptive spark timing control.

Electronic load sensing eliminates bulky high-voltage relays, reducing layout space and manufacturing costs while enabling reliable automatic engine control.

Web rib inserts in exhaust gas heat exchangers generate turbulence to prevent particle deposition and maintain cooling performance.

A urea solution injection nozzle uses a side discharge slit to blow gas along the outer surface, preventing clogging from evaporated water deposits.

A separator plate partitions flexible cooling tubes within an exhaust gas recirculation cooler chamber to limit movement and reduce wear.

Segmented heating zones with a universal fluid circulation system prevent AUS32 crystallization without increasing device complexity.

Switching convergence thresholds during engine stop lowers power usage while maintaining precise valve timing for the next start.

A damper balances pressure forces between diesel and gaseous fuel supplies to stabilize output.

A bypass valve diverts exhaust gases around vulnerable aftertreatment components to prevent premature deterioration.

Extended inner tube separates exhaust gases from cooling liquid longer, reducing reversion and preventing engine damage.

Intermediary damping members reduce high cycle fatigue failures by dissipating vibratory energy through friction between rotor disks and blade platforms.

A three-dimensional open structure catalyst substrate accelerates exhaust gas light-off and enhances reductant evaporation within the turbocharger.

An exhaust bypass valve modulates gas flow to adjust engine noise levels based on vehicle operating parameters.

A steady-state perturbation mechanism detects ammonia slip in underflow selective catalytic reduction systems.

Adjustable slide bushing controls gas flow cross-section to drive a turbine wheel for energy recuperation, eliminating costly throttle valves.

Elongated fuel gas injection holes in the inlet valve rod sleeve control flow timing, reducing pumping work by eliminating protruding nozzles.

Gravity drains urea water from the return conduit into the tank, preventing freezing without heaters.

Parallel exhaust valves direct gas to separate diesel particulate filters, enabling safe regeneration across varying engine loads.

A work vehicle display device alternates between two images to maintain consistent exhaust gas processing information visibility.

Panels with apertures and deflectors guide coolant through multiple paths, preventing dead zones caused by shortest-path flow in the heat exchanger core.

Flower-shaped composite ducts reduce turbocharger noise by using longitudinal ribs to dampen vibration while lowering weight.

Temperature sensors upstream of a compressor wheel measure differential heat to detect surge conditions.

A magnetic fixture mounts a shank skeleton to enable precise parallelism measurement, resolving welding deformation errors and preventing contact damage.

Engagement pins with recess portions fit into corresponding grooves on flange portions to prevent clamping device creep and maintain hermeticity.

Slot joints in tubular metal fiber filters bypass exhaust gas, reducing differential pressure and maintaining vehicle power.

Bypass system routes vessel exhaust around selective catalyst reduction reactor to enable maintenance without stopping gas source.

A valve mounting structure uses a fixed cushion between the mounting portion and joining portion to attenuate vibrations.

Integrating a deflection silencer eliminates separate mixers, achieving 96% NOx reduction while reducing device complexity.

Controller opens exhaust valve during intake and compression strokes to direct air to the filter assembly.