Internal Combustion Piston Engines TRIZ Cases

A sine rotary engine uses an eccentric shaft to guide reciprocating rotor motion.

Anticipated braking activates the auxiliary brake to heat the exhaust stream, maintaining purification temperatures during low-fuel injection modes.

A fully variable electro-hydraulic valve system uses a throttling mechanism to control seating speed.

An exhaust deflector mounted upstream of a urea water injector nozzle redirects hot gas flow away from the injection tip.

Sonic welds attach sealing plugs to the cover, resolving leaks from urea corrosion while maintaining temperature control.

High engine idle speed warms the exhaust system to melt urea crystals in clogged diesel exhaust fluid injectors, reducing repair time.

A steam accumulator decouples steam generation from power delivery, resolving transient response bottlenecks in waste heat recovery.

Opposing flow through adjacent heat exchange conduits minimizes temperature gradients and thermal expansion stress on thermoelectric generators.

A controller selects a regeneration profile incorporating a preheat step to evaporate accumulated hydrocarbons before soot oxidation.

Relocating the control flap to the outlet end eliminates internal shafts, reducing thermal distortion risks while maintaining efficient heat transfer.

Curved gas supply channels create swirl flow to trap ignition fuel, reducing premature outflow and improving combustion efficiency.

Dividing the aftertreatment device into side-by-side units reduces engine compartment width, resolving operator visibility constraints in wheel loaders.

A liquid-gas separator mounted on the exhaust conduit extracts leaked diesel fuel from natural gas streams in dual-fuel engines.

Replacing welded joints with bolted segmented flanges eliminates thermal distortion and stress concentration, ensuring reliable sealing performance.

Variable partition wall thickness reduces pressure loss and improves thermal shock resistance by optimizing local flow distribution.

Parallel identical SCR modules reduce nitrogen oxide emissions while eliminating complex assembly efforts across varying engine outputs.

Variable port inclination angles compensate for dynamic pressure differences to uniformize combustion states.

Auxiliary scavenging ports admit fresh fuel-air mixture into the crevice volume to prevent preignition in large gas engines.

A two-stroke engine intake passage design separates air and fuel paths to prevent mixture blow-by during scavenging.

An airfoil surface and annular protrusions on a piston crown redirect fuel plumes away from cylinder walls, reducing heat rejection and emissions.

A nitrogen oxide trap diagnostic method calculates time integrals of filtered inlet and outlet richness differences to assess trap condition.

Elastomeric mounts on a support plate isolate exhaust components from engine vibrations, preventing structural cracking and cylinder head gasket leaks.

Optimized nozzle sac chamber stabilizes vortex cavitation to generate a hollow spray structure.

Rotating the engine with a rotary electric machine extends the valve phase adjustment window, ensuring accurate positioning for reliable next-start operation.

A biogas engine intake system uses a heat exchanger to warm air before mixing with cooled fuel gas.

A reverse resonator encircles engine exhaust to deliver anti-noise signals uniformly, eliminating directional biasing in conventional muffler designs.

Dual vortex currents in a bent intake pipe balance exhaust gas distribution across cylinders, suppressing combustion noise fluctuations.

A control module adjusts reductant injection using a temperature gradient correction factor for the ammonia storage model.

A controller monitors exhaust temperature to prevent polymeric urea accumulation in catalytic devices.

An engine intake manifold mixes oxyhydrogen gas with combustible fuel to create a hybrid mixture for combustion.

A controller monitors exhaust back pressure to determine silicone dioxide accumulation levels within an engine aftertreatment system.

A hydraulically driven diaphragm pump delivers reducing agent via a magnetically actuated piston.

Second stage electric turbo compounding system recycles waste exhaust heat using a high-speed generator and motor to increase engine output.

A longitudinally displaceable flow transfer valve adjusts fluidic coupling between turbine channels to control exhaust-gas volume.

Dynamic pump control reduces pressure fluctuations and extends injector durability in aqueous urea dosing systems.

A digital waste gate valve arrangement uses a pneumatic actuator system to control on-off valve units via pressurized charge air.

A vehicle control apparatus manages transmission modes and engine states during coast travel to optimize fuel consumption.

Deeper valve pockets transform squish flows into turbulence to improve combustion efficiency.

A self-powered refrigeration system for natural gas hydrate tank containers uses solar cells and boil-off gas generators to maintain phase equilibrium.

Stacked plate heat exchanger channels distribute coolant laterally through integrated exhaust recovery units.

A fluid injector purge system uses a pressure limiter and check valve to automatically clear conduits without electromagnetically controlled valves.

Dynamic oxygen storage-based switching diagnoses catalyst degradation while suppressing nitrogen oxide emissions during the assessment process.

A stator insert with a pilot subchamber positions a fuel injector tip to create a lean mixture, resolving ignition instability in heavy fuels.

A guide vane accelerates exhaust gas locally at the sensor location to ensure sufficient flow velocity for accurate composition detection.

Segmented baffles reduce cylinder-to-cylinder imbalance and wave action by balancing volumetric efficiency in the intake manifold.

A single ammonia sensor monitors exhaust gas downstream of the SCR device to enable catalyst fault detection.

A text detection model uses a transformer architecture to encode sequence vectors for feature extraction.

Rare earth-modified washcoats enable passive soot oxidation at low temperatures, reducing active regeneration fuel consumption and CO2 output.