Internal Combustion Piston Engines TRIZ Cases

A split flap valve closes one concentric passage to locally heat catalytic components.

Gas sensors measure NO, NO2, and NH3 concentrations to control a urea injector, reducing ammonia discharge while maintaining NOx purification efficiency.

Radial strut sections in a one-piece molded fixing element maintain mechanical stability while providing flow permeability for efficient oil circulation.

Hydraulic damping device stabilizes fuel injection valves, suppressing pressure oscillations from the low-pressure system to enhance reliability.

Rare earth doped oxide catalysts maintain thermal stability and boost oxygen storage capacity by 50 percent compared to undoped materials.

An intermediary mounting support transmits clamp force to the SCR housing, preventing heat shield buckling while maintaining thermal insulation.

Laser welding adds stem protrusions, eliminating subtractive machining and reducing production complexity.

A heat exchanger design merges cylindrical members with flange portions to form flow paths and connection interfaces within a pillar-shaped honeycomb structure.

A mechanical fuel lockout switch actuates a valve to control fuel flow from liquid and gaseous sources.

A piston combustion bowl with compound curvature balances NOx emissions and fuel efficiency by controlling combustion geometry parameters.

Segmented support bracket with coupling protrusions insulates the waste gate module, preventing actuator overheating from exhaust gas transfer.

An electric continuously variable valve timing system adjusts intake and exhaust camshaft phase angles for precise engine control.

A three-way catalyst uses a metal oxide monolayer to convert exhaust pollutants at low temperatures.

Electric generator couples with power turbine shaft to convert mechanical energy into electrical energy for storage or crankshaft assistance.

Dynamic heater power control stabilizes exhaust gas temperature at the SCR inlet, preventing ammonia slip and ensuring optimal NOx reduction efficiency.

Segmented piston bowl geometry directs fuel spray to improve air-fuel mixing, reducing soot formation in direct injection diesel engines.

Automatic drive unit start control logic for motor vehicles using speed thresholds and driver presence signals.

Segmented nozzle holes optimize air-fuel mixing under low engine load conditions, reducing particulate matter emissions while maintaining combustion efficiency.

A composite oxide catalyst with noble metal components provides high catalytic activity.

Protective circuit blocks power transistors and dissipates electrostatic discharges to prevent damage from incorrect wiring or polarity reversal.

A transverse mixing tube with multiple orifices injects fuel into the intake channel to create a homogeneous air-fuel mixture.

Ultrasonic vibration vaporizes accumulated condensed water, preventing engine damage and ignition failure from blocked airflow.

A catalyst layer features a high density noble metal section at the leading end to boost warm-up purification.

Inorganic particle coatings on exhaust mounting mat edges prevent fiber shedding during handling while maintaining flexibility under thermal stress.

A diagnostic method samples mass flow rate and differential pressure to calculate a time integral value for rapid particle filter presence detection.

A joint structure combines a glass portion and metal solder to bond ceramic and metal members.

Band-shaped electrodes containing silicon and aggregate lower electrical resistivity to minimize temperature unevenness during heat generation.

A dosing module detects reduction agent errors by measuring pressure rates with the dosing valve closed and open.

A filler neck uses a chamber-like venting path to enable parallel gas flow, preventing liquid surge and contamination at high rates.

Varying first partition wall counts suppresses pressure loss while improving heat recovery efficiency.

Component carrier uses engine coolant for heating, eliminating electrical heaters and reducing energy consumption in cold conditions.

An inwardly protruding lip portion prevents vacuum suction and stress concentration on the fork, ensuring stable operation with reduced torque.

A pressure equalizing hole connects the spring storage space to a fluid passage, distributing fuel pressure evenly around the valve stem.

An integrated system merges exhaust gas and coolant heat sources via a multi-component working fluid to increase internal combustion engine efficiency.

Hydraulic valve actuation enables seamless switching between four-stroke and two-stroke modes, reducing pumping work across varying compression ratios.

Reactive base metals in molecular sieve micropores allow oxygen sensors to diagnose storage capacity and fouling, preventing emission failures.

A powertrain control system inhibits the engine stop/start controller when the transmission is in low range to maintain continuous engine operation.

An insulated metallic film resolves flashover risks at 48V by merging heating and insulation functions into a single sub-80μm structure.

Arcuate piston crown indents segment fuel jets into separate streams, preventing wall impingement and reducing heat rejection in direct injection engines.

A heat recovery system merges exhaust gas and air conditioning refrigerant waste heat into a single operating fluid circuit.

Thermoelectric generator modules convert exhaust heat into electricity using high and low temperature members on the vehicle exhaust pipe.

A dual ignition coil system uses separate switching elements to initiate and sustain electric discharge in internal combustion engines.

A pressure regulator manages diesel and natural gas circuits by venting excess fuel to an aftertreatment system.

A mechanical vacuum pump flange includes a bore that interconnects an injection air inlet with an outlet, routing fresh air to the cylinder head.

A guide stud valve maintains parallelism with the closure seat to ensure uniform ignition torch emission.

Perforated rotary mixing tubes and conical funnels atomize reducing agent into fine droplets, preventing wall wetting in internal combustion engines.

Segmentation and self-service principles enable automatic switching to an upper air inlet, preventing engine damage from water ingress.

A filter element uses a flexible impermeable film on its outer surface to deflect incoming airflow tangentially along the folded medium.

Elastic metallic locators mitigate plastic deformation in variable-nozzle turbines by absorbing thermal expansion stresses.

Active driver assistance system segments fuel economy data into distinct driver and environmental components for precise powertrain control.