Internal Combustion Piston Engines TRIZ Cases

A delivery unit incorporates a deformable sleeve in the collecting chamber to absorb ice pressure from freezing urea-water solution volume expansion.

A line valve uses a displacement section to relocate the valve flap outside the liquid tank.

A vehicle control system detects destination inputs and determines residual range to activate automatic consumption measures.

Segmenting injection ports into straight intake and tapered exhaust designs resolves the trade-off between spray penetration and fuel-air mixing homogeneity.

Pre-compressing inorganic fiber mats prevents side face deformation and wind erosion during press-fitting into exhaust gas casings.

A cylinder head shroud restricts intake flow to generate high tumble in-cylinder motion.

Helical vanes on a coaxial inner tube induce rotational flow that increases exhaust gas velocity, reducing hydrocarbon emissions by 18%.

Modular exhaust manifold segments use water jacket tubes to reduce skin temperature while spacing collars accommodate thermal expansion.

A radial elevation on the swivel arm creates a play position against the housing abutment, resolving bearing friction issues in exhaust gas bypass systems.

A controlled check valve regulates fluid flow from an intake manifold drain tube to an oil separator, enabling continuous drainage of accumulated engine oil.

A bi-directional tractor exhaust system uses an actuated diverter valve to route gas flow through either a downward or upward pipe based on thermal conditions.

Segmenting the urea tank isolates air during filling and releases it upon freezing, preventing tank deformation.

A transmission assembly shifts to lower gears to increase engine speed and exhaust gas flow for diesel particulate filter regeneration.

A method corrects oxygen input and discharge measurements using exhaust gas analyzer step response parameters to determine storage capacity.

Periodic modulation of reductant injection balances NOx conversion with particulate matter regeneration, reducing active soot burning.

A vertical exhaust treatment assembly positions filter cases above the engine cover to maintain high temperatures.

A fluid injector uses a single solenoid circuit with two armatures on opposite sides of a pole piece to control independent valves.

Deformed jacket plate corners enable fluid-tight brazing joints in heat exchangers.

A single primary coil drives two spark plugs through diodes, reducing system cost and complexity compared to separate windings.

Intersecting nozzle hole angles direct lean premixed gas into the precombustion chamber, suppressing combustion fluctuations in the main chamber.

A diesel turbocharger system uses a solenoid valve to inject compressed air from an onboard tank into the intake manifold.

An exhaust gas purifying catalyst applies a ZrCe oxide gradient across the substrate to resolve warm-up performance and durability contradictions.

A vessel propulsion control unit varies engine output independently of a fixed throttle opening degree to enable precise trolling speed adjustments.

Merges waste heat recovery components with the front engine accessory drive to reduce system complexity and weight while improving fuel economy.

An asymmetrical combustion chamber shape directs fuel plumes away from chamber walls to improve air entrainment.

Tin-modified catalyst composition improves cold start performance and oxygen storage capacity across temperature ranges.

Engine exhaust purification device positioned above the engine with an openable protrusion cover.

A fuel reactor extracts oxygen from lean exhaust gas, enabling NOx reduction through an oxidation catalyst while minimizing fuel penalty.

An offset rotation axis moves a point-symmetrical lid laterally to suppress hangover volume while maintaining sealing properties and reducing abnormal noise.

Angled piston cavity sidewalls guide fuel mists to the spark plug, preventing exhaust port flow and stabilizing low-load combustion.

Segmenting Pd-Rh and Pt catalysts eliminates site competition, enabling efficient saturated and unsaturated hydrocarbon purification at low temperatures.

A self-cooling exhaust gas recirculation return pipe distributes heated gases through an air intake distributor using integrated outlet orifices.

A control unit energizes an electric heating catalyst support to maintain uniform temperature distribution during operation.

Segmented pressure areas and throttling gaps provide hydraulic resistance that prevents sudden valve closure in common rail systems.

A tunnel ram intake manifold divides its single plenum into four separate chambers to maintain high air velocity through carburetor venturis.

An obliquely oriented valve seat directs exhaust gas flow toward the catalytic converter.

A thermoelectric generator produces electric current from exhaust temperature gradients to charge a capacitor.

A gradient catalyst layer uses mixed particle sizes to create continuous voids that improve exhaust gas diffusibility.

Sequential current delivery prevents simultaneous starter and brake operation from degrading electrical supply reliability.

Ring-shaped oxidation converter surrounds hydrolysis unit to define exhaust gas flow paths, eliminating uneven distribution that causes harmful by-products.

A valve arrangement manages reducing liquid flow in SCR systems using distinct pressure thresholds for injection and return paths.

Separate coupling housings connect the hoses to prevent freeze-up while enabling flexible installation.

Rotating needle drives linear motion through threads, preventing crystallization clogging and ensuring precise NOx reduction.

An integrated electrical heating system warms exhaust pipes up to 550°C, enabling catalytic converter operation during cold starts.

Elastic clamping installation secures tank insert parts via push-fit force engagement, eliminating welding emissions and device complexity.

Modulating diesel exhaust fluid injection frequency below one hertz allows hydrolysis catalyst temperature recovery, preventing ammonia slip.

A detection method uses upstream and downstream nitrogen oxide sensors to quantify ammonia concentration in exhaust gases.

A dual-catalyst exhaust system injects hydrocarbons to generate reducing intermediates that lower nitrogen oxide levels in engine emissions.

An integrated metering system mounts an air compressor on a plate with internal channels to supply compressed air for selective catalytic reduction.