Internal Combustion Piston Engines TRIZ Cases

A movable insertion rod creates a separate compression space to hold cylinder pressure, cut unburned fluid release, and improve engine output.

Alternating differential power loops and optimized cam profiles smooth rotary motion conversion while reducing impact and parasitic loads.

A bushed pin and spring-sheet clamp keep wastegate flap clearances precise, improving sealing and reducing turbocharger clatter.

Element balance in ferritic stainless steel improves Ni-braze spreading while limiting Cr depletion and preserving corrosion resistance.

Smooth undulated annular surfaces replace crank parts to cut vibration and wear while allowing piston dwell at stroke ends.

A movable scroll passage plate with controlled clearance limits heat loss while relieving thermal stress to speed catalyst warm-up during cold starts.

Inner and outer bearing cylinders separate axial restraint from radial damping, preventing impeller interference, leakage, and vibration-related loss.

A flat plate cover with tubular edge engagement cuts damper height and diameter, reducing low-pressure pulsation in fuel pumps.

An elastic lever arm lets the wastegate flap self-adjust to thermal deformation and wear, improving sealing while lowering closing force.

A continuous plain-bearing contour builds hydrodynamic pressure to support axial and radial loads in one turbocharger bearing, cutting size and cost.

Sub-cooling diverted working fluid keeps it liquid at the bearing, avoiding oil contamination and premature vaporization in Rankine cycles.

Integrated heating inside fuel hoses and nozzles prevents freezing without bulky heated cabinets, while lowering energy use and preserving handling.

By moving the activation element outside the frame, this exhaust housing valve saves space, speeds installation, and improves durability in hot gases.

Pre-perforated corrugated air fins form rectangular apertures without fin deformation, improving low-density gas heat transfer and assembly.

Variable lubricant flow based on temperature and engine speed keeps turbocharger bearings lubricated while reducing stirring loss and oil waste.

A bypass valve and flow restriction let the baler rear gate move fast in stroke but slow near end positions to prevent slamming.

A dual-member valve assembly shields the biasing member from exhaust gases to cut wear, maintain flow control, and extend turbocharger life.

A PTFE buffer lets the valve seat slide for uniform sealing contact, preventing leakage loss while easing dimensional accuracy demands.

An elastic pin connection lets the support ring slide under controlled friction, absorbing turbocharger nozzle thermal expansion without extra parts.

A tailored iron alloy balances self-lubrication, machinability, and cost to reduce wear and extend turbocharger bearing bushing life.

Recirculated reductant cools the injector after shutdown while the shut-off valve blocks pump flow to prevent overheating and pump damage.

Segmented cobra-head bends and bulge sections keep intake airflow uniform and cut pressure loss in compact engine intake ports.

A clamping ring and radial locking elements secure the valve in open or closed positions, then release by axial force without extra mechanisms.

A shaft-driven lube pump and integrated gearbox cut separate WHR circuits, reducing weight, complexity, and maintenance effort.

Integrating the wristpin bore into the piston skirt frees injector and oil-jet placement, improving cooling and compact opposed-piston engine layout.

Snap-in electrical receptacles integrated into a thermally conductive connector simplify heated fluid line assembly while maintaining reliable fluid heating.

A stationary nozzle-and-blocker valve guides one-way flow without moving parts, reducing leakage and wear in high-pressure abrasive fluids.

Convex coaxial conical flap surfaces and axial stops improve wastegate sealing under thermal distortion and wear while reducing noise.

A variable venturi throat boosts vacuum at low engine speeds while limiting exhaust backpressure to keep work vehicle air filters cleaner.

Temperature and pressure feedback control gas uptake into a solvent to prevent detectable bubbles during underwater effluent discharge.

Actual engine torque is fed into CVT ratio control to avoid stalling near torque limits and improve low-torque acceleration response.

A pump-heated circulation loop keeps AUS32 usable by preventing freezing and crystallization while reducing clogging and refill complexity.

Actual engine torque is added to RPM-based CVT control to prevent stalling near torque limits and improve acceleration response.

Pre-setting the spring load and separating the valve body from the piston unit reduces tolerance variation and leakage in pressure regulators.

Two-stage pressure regulation and an electric metering valve improve CNG dosing precision, extend tank emptying, and support stable engine operation.

A piston protrusion with a spark-plug cavity and tuned inclined surfaces preserves tumble energy while improving flame propagation and fuel efficiency.

A shuttle bearing with a non-planar surface cuts TDC acceleration spikes, extends dwell time, and reduces engine wear and lubrication loss.

A recessed piston pocket and radial channels create localized compression ignition for heavy fuels while lowering overall cylinder pressure and emissions.

An overpressure separator and intermediate reservoir discharge condensate through a float valve, avoiding pump wear and pressure surges that skew readings.

A flat cover engaged by a tubular housing part cuts damper height and diameter, enabling a smaller high-pressure fuel pump.

Separate valve disk and spindle assembly compensates tolerances during welding to improve turbocharger valve-seat sealing and reduce wear.

A washer between the thrust plate and bearing supports axial loads in both directions, improving turbocharger thrust capacity and reducing leakage.

A single linear valve links twin-scroll flow connection and wastegate control, cutting turbocharger space while preserving gas separation.

An elastic membrane in the connecting chamber cuts flow resistance, absorbs pressure pulses, and prevents SCR urea residue freeze damage.

An inner and outer passage layout detects and contains hazardous material leaks faster while reducing ventilated space and improving access.

A one-way valve refills the reserve HP gas unit from the primary unit, helping prevent hidden reserve depletion and LP supply interruption.

Continuous convex-concave bearing contours let one hydrodynamic turbocharger bearing absorb radial and axial loads without external pumps.

Rounded valve edges and helical grooves keep the air-fuel mixture attached at low RPM, improving mixing, heat exchange, and emissions.

A heat exchanger system uses a liquid-to-gas phase change medium to transmit exhaust heat efficiently.

A powertrain controller inhibits engine stop/start operations based on suspension ride height settings.

Variable thickness partitioning section generates tumble vortex flow while resolving casting fluidity challenges for intricate geometries.

An exhaust purifying apparatus uses discharge and treatment electrodes to direct particulate matter into a defined space for plasma oxidation.

Vertical mounting and an inverted bottom outlet prevent vapor particle suction into the pump, maintaining consistent fuel flow rate.

Adjustable spherical and slip pipe joints replace costly elastic bellows to manage mounting tolerances while maintaining compact exhaust system design.

Controller prevents unnecessary SCR catalyst heating to eliminate energy waste during low ammonia adsorption states.

A zoned electrically heated particulate matter filter uses segmented heating elements to convection heat specific regions and initiate soot combustion.

Control system detects nitrogen oxide threshold exceedance to intervene in torque demand, limiting emissions without compromising ride comfort.

An internal filter housing with a floor-spaced inlet opening prevents dirt contamination and ice damage in vehicle reducing agent tanks.

Segmenting the catalyst coat layer isolates oxygen storage capacity from noble metals, resolving rapid atmosphere switching issues.

A feature fusion model training method adjusts spliced features using self-attention weights to enhance recognition precision.

A compact exhaust aftertreatment housing integrates oxidation catalysts, particulate filters, and selective catalytic reduction components with flow redirection fins.

A sleeve-ring baffle inside the compressor bypass dissipates sound wave energy, reducing acoustic spikes and component wear during pressure relief.

Radial grooves segment annular semiconductor elements, reducing thermal stress and easing assembly of complex tubular thermoelectric modules.

A dynamic lambda control system adjusts air-fuel ratios based on real-time catalyst temperatures to optimize conversion performance.

An observer module estimates fluid temperature using sensor data and external parameters.

Link members decouple spring biasing force from the rotation shaft, reducing actuator size and preventing twisted deformation.

Segmented outlet apertures deliver precise washcoat volumes to eliminate uneven profiles and reduce pressure loss in emissions substrates.

Hydrocarbon doser injects fuel upstream of oxidation catalyst to raise exhaust temperature for SCR on filter regeneration.

A hybrid turbocharger integrates an electric motor to drive the high-pressure compressor stage independently of exhaust gas flow.

Nested inlet and outlet pipes in a silencer housing adjust acoustic profiles while minimizing flow resistance.

A retractable emission filter positions upstream of the heat recovery steam generator to capture exhaust pollutants.

A biasing sleeve assembly accommodates housing thermal expansion while maintaining constant clamp force.

A CTU level rate control method uses a perceptual rate-distortion model to allocate coding bits based on local visual quality.

Lambda sensor characteristic values determine exhaust gas concentrations for reliable emissions analysis.

An exhaust burner control system pre-heats the SCR catalyst using multi-tier threshold management to maintain optimal operating temperatures.

A diesel exhaust processing device calculates convergence portion pressure using temperature, atmospheric pressure, and total flow rate data.

Diagnostic method compares upstream and downstream nitrogen oxide concentrations to determine SCR catalyst treatment efficiency.

A common envelope houses parallel gas ducts for selective catalytic reduction and bypass, reducing system volume while maintaining NOx control.

A thermal management device for turbocharged engines uses exhaust heat exchangers to warm intake air.

A control unit determines particle filter loading by comparing exhaust gas volume flow with upstream pressure using existing engine sensors.

A pump operates counter to its usual direction during flushing to generate negative pressure in the pressure line.

Optimized combustion chamber geometry with a spherical cavity prevents wall interference and knocking to enhance fuel economy.

Segmented catalysts with passive air injection raise oxygen concentration to reduce CO and NOx emissions without electronic control.

A buffer tank captures excess gas instead of venting it, reducing greenhouse emissions and pressure demands.

Sequential vacuum purging empties series-connected ammonia injectors, eliminating undefined flow paths and preventing ice pressure damage.

Segmenting inlet and outlet channels with distinct catalysts manages high oxygen levels in lean burn exhaust gases.

Partializing means constrict the exhaust passage area upstream of the main catalyzer, raising gas pressure and temperature to accelerate pre-catalyzer warm-up.

A pressure regulator valve controls motive flow into an ejector, enabling deep vacuum generation despite fluctuating boost pressures.

Fin portions in the intake manifold reduce airflow rotation to equalize swirl between left and right engine banks, minimizing particulate emissions.

Alumina separators prevent palladium particle coagulation in high-temperature oxidizing environments, sustaining purification efficiency.

Composite aluminum and plastic housing resists thermal distortions, reducing actuator weight without compromising structural integrity.

An electrically-driven supercharger compresses outside air to supply negative pressure for brake force boosting.

A single-piece intake manifold integrates a heat exchanger using additive manufacturing to cool engine air.

A metering device counts pump delivery movements to diagnose operational status and detect air bubbles in liquid additive systems.