Internal Combustion Piston Engines TRIZ Cases

A vehicle fuel delivery system uses a latent material in a heat exchanger to cool returning fuel through phase transition.

Replacing slow engine coolant circulation, an electric heater in the tank rapidly thaws frozen urea to eliminate vehicle downtime.

Removable heating arrangement with electrical element and bypass pathway reduces pressure drop while enabling easy SCR catalyst maintenance.

Segmented acoustic volumes and nested resonators reduce tailpipe noise without increasing vehicle packaging space.

Frame-shaped intermediary isolates partition wall from vibration welding deformation, reducing pressure loss and improving sealing performance.

Relocating the discharge valve via an intermediary hose and adding a silencer reduces noise pollution while maintaining turbocharger reliability.

Forward placement of exhaust purification components reduces tractor bonnet height, preventing branch contact while maintaining cooling efficiency.

A diaphragm-based liquid drain valve selectively removes condensate from charge air coolers during non-boosted engine operation.

Multiple flow holes in the injector valve seat reduce stroke length and package size while maintaining fast response times.

Radial and axial spring retention on the adjusting arm prevents exhaust gas duct vibrations from loosening the valve, reducing wear and rattling noise.

Synchronizes CVT clutch oil pressure drain with engine off and motor torque application to prevent vehicle shocks during idle stop mode.

A frame-mounted supercharger receives power through a transmission input shaft to compress intake air for the engine.

A control module operates a reductant pump at varying conditions to sample pressure differentials for system diagnostics.

Segmenting the water box from the housing reduces tooling complexity and assembly time while ensuring precise positioning for uniform coolant distribution.

A variable asymmetrical crank mechanism adjusts piston stroke lengths and compression ratios using planetary gears.

Controller adjusts fuel injection flow rates based on exhaust gas recirculation valve opening degree to resume combustion.

A moving wall turbine uses a gas film to reduce friction between rotating components.

Segmenting the storage tank from the stationary filter assembly prevents impurity build-up while a non-return valve retains fluid to stop crystallization.

A short primary vaporization element allows exhaust additive liquid to run off its outlet end for efficient mixing.

Patsnap Eureka TRIZ case details a carburetor assembly with an interlock lever and trigger lever mechanism.

A supercharger lubrication system floods gears and bearings with pressurized oil to minimize wear on components.

An exhaust purification system uses ammonia concentration detection to estimate particulate matter deposition on a filter.

An integrated exhaust valve merges bypass and wastegate functions into one assembly, reducing system complexity and weight in two-stage turbochargers.

Hot gas mixes with exhaust to oxidize pollutants, reducing cold start emissions without waiting for catalyst light-off.

Repositioning fuel injector to intake port wall eliminates fluid resistance from restricted port shapes while maintaining air flow rate.

Ribs segregate twelve tube rows into a tortuous flow path, creating coolant turbulence that lowers combustion air temperature for turbocharged engines.

A check valve in the precombustion chamber fuel supply channel opens during intake stroke pressure decrease to deliver gas.

A urea water pipe clogging detection device uses startup pressure control and exhaust gas temperature monitoring to identify blockages.

A urea injection system uses a dedicated purging line and valve to supply air into the nozzle and lines.

Fuel injection heats the NOx storage catalyst to optimal temperatures, enabling effective emission reduction during urban driving without AdBlue.

An inward-discharging supercharger routes charge air through a central crankcase duct to eliminate complex external piping and reduce package size.

An extraction valve at the tank base feeds an external booster pump, preventing bubble formation during engine restart.

Nested sheet metal inner scroll and inlet members create heat-shielding spaces that suppress exhaust gas temperature drop and internal leakage.

Outer sleeve constrains stator rotation while forming liquid-tight water cooling jacket to resolve complexity and thermal management trade-offs.

Direct mechanical coupling drives plant components using waste heat energy, bypassing grid feed-in costs and administrative overhead.

A valve peripheral part extends around the valve seat outer circumference to restrict fluid outflow and improve shut-off performance.

Monitoring carrier fluid temperature and pressure at the evaporator allows dynamic adjustment of operating parameters, preventing heat transfer distortions.

A Cu-based delafossite oxide catalyst combines with an inorganic porous material to increase exhaust gas contact probability.

Barium prevents cerium carbonate formation, preserving active oxygen release for low-temperature exhaust cleaning.

A fuel injection device nozzle uses optimized hole angles to improve spray atomization.

An electronic regulator replaces mechanical springs with sensors and a processor to eliminate pressure droop.

Twisted intake ports with lateral joining ridges orient swirling air to homogenize mixtures and prevent fuel wall wetting.

Sintered ceramic powders create a porous protective layer that prevents liquid penetration and poisonous material deposition on gas sensors.

Inclined urea water tank surfaces create a dedicated cooling air guide passage that maintains fluid cooling performance despite upstream obstruction.

Segmented in-wall and on-wall coatings distribute catalyst loading to improve particle filtration efficiency without excessive back-pressure increase.

Segmented dual valve design prevents combustion gas backflow into the injector, reducing thermal stress on components to extend operating life.

Capillary action in a porous sponge element extracts liquid reducing agent from a tank, eliminating residual weight and maintenance effort.

Calculating heat input from AHI fuel and measuring NOX conversion efficiency isolates specific component failures without adding mechanical flow meters.

Austenitic stainless steel alloys with optimized chromium and nickel content form turbocharger kinematic components.

Offsetting the wastegate valve center from the shaft axis aligns the sealing surfaces to block exhaust gas flow effectively.