Internal Combustion Piston Engines TRIZ Cases

Valve device employs non-linear interlocking between bypass and downstream passages to resolve flexibility constraints in gear link mechanisms.

Deflection baffles guide coolant flow to critical zones, preventing overheating risks when inlets exceed safety distances.

A solubilizing tank processes engine exhaust into water-suspended carbon nanotubes for direct agricultural application.

A control module compares soot sensor data against estimated values after regeneration to assess sensor functionality.

A Rankine cycle waste heat recovery system uses a liquid working fluid bypass to regulate exhaust gas recirculation temperature.

Radially widening the circumferential wall accommodates the exhaust gas treatment unit, preventing damage to the supporting fiber layer during assembly.

Dual cam profiles and a solenoid-controlled selector enable seamless mode transitions, reducing pumping work across varying compression ratios.

A driving assistance system calculates eco-responsible scores from vehicle sensor data to quantify driver behavior.

A release line redirects residual gaseous fuel from the supply system into the charge air stream for combustion.

Drills secondary air passages directly into the cylinder head to merge valve mounting, reducing component count and manufacturing costs.

A passive secondary air delivery system meters compressed air to a second catalyst bed using an orifice or venturi mixer without active controls.

Unified intake structure eliminates complex manifolds by merging air and EGR gas in a single chamber, resolving cylinder-to-cylinder emission variations.

Optimized scroll inlet geometry suppresses rapid exhaust expansion and flow resistance, enhancing turbocharging efficiency.

An integrated exhaust manifold houses two series turbines, reducing thermal loading and production costs while improving torque response.

A method calculates reducing agent mass flows to predict NOx remaining in DeNOx catalysts after regeneration.

A rectilinear pipe mixer orients a reducing agent sprayer parallel to exhaust flow for homogeneous mixing.

Curved cylinder head partitions increase layout freedom to intensify tumble flow without complex multi-component structures.

An adaptive fuzzy controller updates dosing commands based on real-time pressure feedback, resolving nonlinear system tuning challenges.

A reductant heating system regulates engine coolant flow to maintain fluid temperature above freezing.

Distinct heat-shielding and heat-retaining films on the piston land part suppress fuel adhesion and prevent knocking during intake.

Upstream and tailpipe NOx sensors adjust urea injection to minimize N2O emissions while maintaining ultra-low NOx levels.

A centrifugal oil mist separator uses a fan driven by second exhaust gas to rotate within a duct.

Passive NOx adsorption stores emissions at low temperatures and releases them when the SCR catalyst reaches effective operating conditions.

Revolution asymmetry merges Helmholtz and interference principles, expanding damping range without increasing resonator volume.

An adjustable throttle valve controls mass flow through a pyrolysis reactor, reducing electrical power requirements while maintaining temperatures above 200°C.

Integrated pressure vessel with heat exchanger supplies gaseous fuel to piston engines, eliminating dedicated compressors.

Rim holes in one shell section allow vertical manifold pipe spacing, reducing horizontal footprint and assembly weight while maintaining gas-tight seals.

Arc-shaped splitter blades in an intake swirl gasket distribute airflow evenly, resolving uneven mixing that causes high fuel consumption and engine knock.

A solenoid valve and pressure-biased check valve prevent combustion backflow into the fuel admission line, protecting components from high-temperature wear.

An intake manifold expands charge air to lower its temperature without adding external cooling components.

Dual heat exchangers manage temperature conflicts between power generation and particle filter operation during low load engine modes.

Removable catalyst canisters enable compact diesel exhaust packaging while maintaining optimal gas mixing efficiency.

Axial fin portion creates labyrinth cavities between turbine and bearing housings to suppress heat transfer from the turbine wheel.

A ducted temperature control apparatus draws ambient air into the exhaust stream to cool filtered diesel gas.

A rotary disk with a circumferential opening closes the exhaust port completely to increase charging pressure in two-stroke engines.

Integrating an intercooler within a compressor housing structure reduces auxiliary power unit weight and complexity while maintaining compressed air supply.

A cover state diagnosing section uses heater information to determine diagnosability of an exhaust gas sensor element cover.

A lean NOx trap protects a downstream low temperature adsorber from reducing gases during regeneration.

Transmission clutch actuation adjusts tie-up force during engine start to synchronize torque transfer with the first combustion event.

Curved ribbon terminals prevent liquid re-scattering while nested pipes reduce installation space in exhaust systems.

A vortex tube separates high pressure air into low temperature streams to cool vehicle intake systems without adding external power.

A connection pipe with multiple spherical joints links exhaust treatment components.

A valve timing control device uses a restricting projection to stabilize the torsion spring posture along the rotational axis.

An intake air pre-heater warms cool dry air before it mixes with hot exhaust gas recirculation streams.

Visual markings on fluid connectors and conduits identify coupling relationships to facilitate accurate assembly of aftertreatment systems.

A double-walled hose monitors pressure differentials to detect leaks and nozzle misalignment in reducing agent delivery lines.

A secondary air system injects oxygen into the exhaust channel to heat a downstream catalytic converter via exothermic fuel oxidation.

A water lead-through module uses a high-alloy austenitic stainless steel flow tube to handle corrosive exhaust gas scrubbing water discharge.

A fuel quality sensor transmits real-time ethanol and octane data to a tank-mounted display device.

Segmented aftertreatment system combines three-way catalyst and SCR device to convert NOx during lean burn operations.