Internal Combustion Piston Engines TRIZ Cases

Multi-position signal processing distinguishes under-restricted from over-restricted mechanisms, resolving accuracy issues caused by vehicle cycle sensitivity.

Tapered shroud guides working fluid to hub, reducing mixing losses and maintaining high flow rate across varying nozzle opening degrees.

A venting element connects the tank air space to the environment via a dedicated hose line.

Asymmetric intake ports break swirl intensity balance to suppress tumble flow interference and improve engine compression.

An electric turbocharger system coordinates with an exhaust gas aftertreatment device heater to accelerate catalyst light-off.

A honeycomb filter wall portion uses a ceria-zirconia composite oxide base material to reduce thermal capacity and improve gas permeability.

Embedding heating structures inside the lower vessel wall protects components from ice pressure while ensuring reliable liquid reducing agent supply.

Liquid anhydrous ammonia reductant eliminates freezing and deposits while maintaining high ammonia content for reliable SCR operation.

A segmented particulate filter channels exhaust through coated and uncoated porous walls to control the NO to NO2 ratio.

Autonomous vehicle systems monitor diesel particulate filter temperatures during soot combustion to manage thermal loads.

An exhaust manifold cavity provides thermal insulation and a bypass path, resolving torque drops at low speeds while preventing component overloading.

Segmented heater sections with optimized materials resolve the contradiction between high power density and durability under thermal cycling.

Optimized exhaust manifold geometry equalizes cylinder backpressure, reducing thermal stress and knock in natural gas engines.

A turbine hybrid power supply uses inertial energy storage to manage variable loads while keeping the engine at full power.

Neodymium oxide particles inhibit rhodium transfer on alumina supports, reducing expensive metal usage while maintaining exhaust purification performance.

A rotary engine control device stops motor energization to prevent shaft damage from backward rotation.

Door control units detect attachment states to prevent unintended movement and optimize fuel efficiency.

Curved deflectors around a gas sensor body accelerate exhaust flow, resolving low velocity bottlenecks that reduce nitrogen oxide sensor sensitivity.

Positioning the urea water tank near the engine prevents freezing in low temperatures while maintaining small-radius turning performance.

A heating element warms bypassed intake air flowing through the turbocharger, raising catalyst temperature during low-flow operation.

An exhaust-gas recirculation module uses a coolant channel between housings to cool gas before the valve.

Air driven hydraulic pump maintains precise reductant pressure via pneumatic actuation, eliminating motor complexity.

Direct fuel injection into the pre-chamber purges residual gases, resolving mixture dilution that reduces combustion efficiency.

A hydraulic system actuates multiple intake valves to optimize engine airflow patterns.

A cryogenic fuel supply system stores and pressurizes gaseous fuel for locomotive engines.

Segmented common rails manage pressure for multiple engines, reducing installation complexity while maintaining treatment effectiveness.

An L-shaped urea water tank fits within a cab rear extension beam to maximize storage volume.

A control apparatus manages engine starting in series hybrid vehicles by calculating demanded power and battery discharge capacity levels.

An electric machine bridges the gap between turbo stages to eliminate mid-speed torque dip and improve engine response.

A heat treatment module with a third compartment thermally isolates intake and EGR gas flows to optimize cooling.

A partition wall separates exhaust gas flow into distinct passages within a scroll passage to maintain balanced cross-sectional areas.

Curved leading edge and straight trailing edge nozzle blade design resolves torque direction trade-offs to enhance turbine efficiency.

Dual heat exchangers recover engine coolant and exhaust waste heat to release hydrogen from LOHC, reducing fueling costs compared to high-pressure storage.

A turbocharger variable nozzle device uses a segmented insert and retainer ring to mechanically isolate thermal stress between the turbine housing and bearing assembly.

A pre-assembled wastegate subassembly simplifies turbocharger manufacturing by integrating a mounting plate, valve shaft, and valve into a single detachable unit.

A hybrid engine stop control system manages motor generator rotation to set a precise crank angle for stable restart.

A sliding seat uses a flexible bearing material to reduce mechanical load and dampen vibrations in exhaust gas systems.

A controller suspends and restarts a cryogenic pump based on temperature thresholds to manage fluid phase changes.

Integrally cast vanes redirect exhaust gas flow to control turbine wheel speed, eliminating assembly complexity and reducing manufacturing costs.

An exhaust heater vaporizes liquid methanol using waste heat from engine exhaust gases, preventing intake wall film formation and corrosion.

Eccentric air admission creates a vortex in the heater to mix fuel with exhaust gas, resolving slow regeneration times during high-speed vehicle operation.

A dual-fuel injector sets defined pressure levels in a leakage collection chamber to separate liquid and gas leakages, preventing coking at the gas nozzle.

Adjustable adaptation factors correct dosing rates to prevent ammonia slip and maintain catalytic converter efficiency.

Inlet tank deflector with inclined flap ensures uniform airflow distribution, preventing thermal shock and enhancing heat exchange efficiency.

A rotary valve driven by an electric motor rotates around the cylinder to align with intake and exhaust openings.

Consolidating multiple cooling streams reduces ram air restriction while recovering thermal energy to improve fuel economy.

A diesel particulate filter estimation method calculates restriction sensitivity to switch between pressure and model-based soot load metrics.

A reservoir recess in the link chamber stores condensate water below the link mechanism level to prevent mechanical interference.

Comparing EGR pressure sensor output with manifold air pressure detects sensor degradation and cooler plugging, improving flow estimation accuracy.

A fuel pump design uses a sealing liquid chamber to maintain pressure in sync with fuel fluctuations.