Internal Combustion Piston Engines TRIZ Cases

A fuel air mixer collar creates a reservoir to draw gaseous fuel into the mixing path via the Venturi effect.

Pivoting vanes adjust chamber volume to increase combustion charge pressure while preserving rotational momentum, eliminating dedicated superchargers.

A vehicle engine control unit detects movement after starting to manage automatic shut-off timing.

Relocating the fuel pump to the engine block valley reduces noise while maintaining drive engagement.

Flow equalization means homogenize exhaust-gas streams to resolve non-homogeneous impingement on downstream catalysts.

Heating a reservoir in the exhaust line evaporates collected condensate, preventing liquid droplets from damaging sensitive NOx sensors.

Offsetting the close-running region from the shutter disc mid-plane prevents fluid leakage and pressure spikes during rotary piston movement.

A reagent mixer injects urea into exhaust gases using a flow-redirection housing and multi-outlet discharge manifold.

A gaseous fuel injector employs a dual plunger control mechanism to resist valve displacement, reducing rapid injection gain and stabilizing flow.

Segmenting the through flow duct via a ring system expands the exhaust noise frequency spectrum, resolving narrow attenuation limits.

Virtual scenario reconstruction and rendering identify hard samples to reduce real vehicle data collection costs.

Machine learning models calculate NOx concentration and ammonia slip using engine state variables, replacing physical sensors that fail during cold starts.

Concentric control valve members manage dual fuel injection timing and quantity, resolving the complexity trade-off of independent multi-fuel control.

Spacing a fuel opening from the intake channel wall prevents wall film formation and ensures reliable fuel delivery during idling.

Mechanical linkage merges auxiliary valve actuation with the inlet rocker arm to eliminate separate control systems and reduce controller complexity.

Upper and lower reinforcing plates coupled with anti-vibration members absorb engine vibrations, reducing stress concentration on the core portion.

A vent valve uses a floating body to rotate a closing lever against a vent opening, creating a fluid-tight seal during liquid inflow.

Open-cell carbon foam substrates embed noble metal catalysts to resolve the geometric surface area versus pressure drop trade-off in emission reduction systems.

Positioning the urea injection device close to a dividing wall reduces engine room length and minimizes heat influence on urea water in industrial vehicles.

Gradient ceramic particles in the filter layer reduce pressure loss while maintaining high collection efficiency for exhaust gas cleaning.

Predominant tumble flow motion from intake passages improves air-fuel mixing, resolving low turbulence bottlenecks in gaseous fuel engines.

An electric motor drives a compressor through a planetary gear set, allowing real-time adjustment of exhaust gas temperatures to optimize catalyzer performance.

Radial openings in a turbine housing diffuser separate wastegate and wheel flows, reducing turbulence and vibration.

Parallel fuel pump attachment aligns components to simplify detachment and reattachment, reducing maintenance steps.

A bypass valve creates a secondary flowpath between pressure chambers, reducing sudden spikes and NVH issues in variable valve train systems.

Heating charge air with a circulating working fluid raises exhaust gas temperature, enabling efficient aftertreatment without throttling losses.

A stop-start controller manages engine operation by monitoring welder and environmental parameters to calculate a restart value.

Integrating optical quality sensors into the dispensing head reduces wiring costs while maintaining precise urea solution measurement.

An optical sensor detects particulate layers on exhaust line walls via radiation reflection to enable real-time failure monitoring.

A cross-linked acrylic copolymer maintains elongation and hardness at 150°C by balancing structural units.

A fuel injection unit with a flow fuse manages pressure in the first fuel feeding section.

A dual-mode heating system transfers thermal energy from exhaust gas to a reductant fluid via a secondary element.

Movable ducts adjust fuel jet angles to optimize air-fuel mixing and reduce soot formation in internal combustion engines.

Counter-rotating swirl flows from non-linear air relief passages cancel acoustic noise, eliminating the need for sound insulating materials.

A gas engine injects fuel upstream of intake branching to extend mixing distance and ensure uniform air-fuel concentration.

A dual SCR control method adjusts the second urea doser based on a desired ammonia slip fraction to optimize exhaust treatment.

Bypass line supplies oxygen-rich exhaust gas to the particle filter, preventing clogging from low-oxygen EGR flow and enabling reliable regeneration.

A temperature controller adjusts reducing agent injection volume to maintain safe nozzle operating conditions in exhaust systems.

A urea water supply system uses a temperature raising device to heat the liquid before injection.

A particulate matter filter failure detection device compares engine load against a threshold to initiate sensor signal analysis.

A fuel rail heating system uses a common pipe-fuel-rail-circuit and thermal coupling to heat fuel directly within the main tube structure.

An axial flow design with a perforated inner tube improves mixing efficiency while lowering back pressure and preventing deposits.

An air heat exchanger routes airflow around a metering valve to manage dosing unit temperature without liquid cooling.

A hydrocarbon feed valve modulates fuel concentration to drive catalytic reactions on a precious metal catalyst supported by a basic layer.

An external DEF tank supplies diesel exhaust fluid to local engine reservoirs via automated pumps, eliminating manual refueling in remote locations.

A heating device warms an oxidation catalyst to enable particulate filter regeneration at low exhaust temperatures.

Microwave window enables space ignition in rotating piston engine, eliminating compression loss from spark plug indentations.

Segmenting the NOx reduction catalyst into cells allows targeted urea injection, maximizing purification while preventing ammonia slip.

Spraying gas with a circumferential component opposite to impeller rotation reduces rotation stop time, cutting machine idle time between balance inspections.