Internal Combustion Piston Engines TRIZ Cases

Upstream gas pressure drives a secondary actuator portion to urge the valve member closed, reducing mechanical force requirements on the primary actuator.

Space-domain model predictive control optimizes adaptive cruise control by varying traction force and distance, reducing fuel consumption by 6.95 percent.

A knocking presence evaluation circuit uses a pressure sensor to generate a derived signal for real-time intensity index calculation.

A diesel fuel feed system uses a dedicated fuel cooler to reduce the temperature of excess engine fuel before it returns to the tank.

A control module monitors forward portion signals to precisely adjust urea dosing into the selective catalytic reduction catalyst.

Switching roller finger followers reduce fuel consumption and emissions by optimizing energy use across low and high lift modes.

A control unit measures NOx emissions and compares them against dynamic thresholds to diagnose selective catalytic reduction system operation.

Diesel oxidation catalyst paired with hydrocarbon-selective catalytic reduction unit accelerates light-off temperature to reduce nitrogen oxide emissions.

Dynamic oxidation catalyst modeling adjusts fuel injection rates to maintain reliable temperature control under changing engine speed and torque conditions.

Coolant channels within the turbine housing prevent overheating, enabling lightweight aluminum construction and reducing engine compartment heat radiation.

A contoured piston combustion bowl with a radially inner shelf and swirl pocket directs fuel-air mixing through rotational flow.

Spray channels deliver lubrication oil to turbocharger sealing means, eliminating water circuits and reducing system complexity.

Relocating the air pump inlet above the engine prevents seawater ingestion that damages the catalyst.

A microwave antenna unit transmits signals through exhaust gas to detect ammonia concentration inside the SCR catalyst.

A conformal heat exchanger uses a jet device to drive forced convection, significantly increasing seawater flow rates and thermal transfer efficiency.

A turbocharger uses a lateral slider to connect fluid ducts, eliminating flow disturbances caused by traditional in-duct valves.

Curved cambered surfaces guide the sliding vane to minimize radial displacement while reducing aerodynamic flow losses and shock wave excitation.

Segmenting catalyst functions into distinct elements with a recycle flow path eliminates parasitic material effects and supplemental heating needs.

Oil spray grooves direct pressurized lubricant to cool the shaft, reducing heat transfer to the bearing housing and compressor.

A heater control device manages tank and piping heaters using a shared current supply circuit to prevent peak current overload.

A bypass line with a throttle valve creates defined flow resistance to maintain precise upstream pressure during exhaust braking.

An air intake pathway structure uses an inner tube and expanded casing to suppress reverse flow, preventing backflow from reaching the air flow meter.

A stop-start control system inhibits engine restart while the electric parking brake transitions between applied and released states.

Segmenting additive delivery and electronics via plug connectors reduces device complexity while maintaining autonomous dosing reliability.

Controller estimates reducing agent temperature via injector resistance measurements, preventing freezing damage while minimizing unnecessary purge cycles.

Turbine housing evaporator converts exhaust heat into working fluid vapor to drive a steam turbine.

Dynamic feedback corrects the ammonia fill level model during high temperature operation, preventing unintended emptying and reducing ammonia slip.

Optimized reference angles and tangent parameters in the spiral tongue generate high swirl flow while maintaining structural integrity within limited space.

Fiber composite bands embedded in dovetail grooves constrain radial thermal expansion of cylindrical motor housings.

Offsetting the valve seat center optimizes the effective opening area, resolving the trade-off between installation reliability and high intake efficiency.

Partition walls and hose boundary positioning isolate the reducing agent tank from engine heat to prevent freezing and excessive temperature increases.

Temperature control prevents alpha-prime phase formation in heating conductors, ensuring stable ohmic resistance and consistent catalytic converter performance.

Welds plastic housing parts around a functional insert to secure positioning and eliminate separate sealing interfaces.

A rotary engine drives a passive piston via a gear mechanism to optimize combustion volume, reducing heat loss and improving thermal efficiency.

A control arrangement synchronizes engine speed with hydrostatic transmission pressure to maintain optimal power delivery.

A reductant supply system distributes urea via a single injector and distributor pipe across multiple turbo inlets.

Asymmetric fuel injection cools supercharged intake air, resolving the trade-off between cooling efficiency and wall fuel deposition.

A vehicular engine control device adjusts automatic stop conditions using vehicle speed and steering information to align with driver intentions.

A deformable compensating device surrounds the filter housing to absorb volume expansion forces from freezing urea solutions.

Heat shroud ribs impede circumferential exhaust flow within the turbine back-disk cavity to convert dynamic pressure into static pressure.

A dosing module heats its solenoid coil to melt urea crystals and restore fluid flow.

Segmented catalyst layers with specific cerium-zirconium oxide ratios and rhodium placement resolve low-temperature ignition performance constraints.

Continuous differential pressure monitoring controls two dosing units to enhance passive regeneration efficiency while minimizing ammonium slip risks.

A catalytic converter uses a porous silicon carbide layer separated by thermal insulation to retain heat and accelerate catalyst activation.

Asymmetric intake ducts create swumble aerodynamics to boost turbulent kinetic energy without adding complex appendages.

A turbine housing uses a detachable sheet-metal interior member to improve exhaust gas flow efficiency.

Merging the electric rotary drive actuator with the bypass channel eliminates joint play and moving mass, enabling rapid wastegate adjustment.

A predictive cruise control system generates a target speed window to dynamically adjust vehicle operation.

Segmented supply passages deliver oil to inner and outer bearing surfaces, preventing depletion during high-speed rotation.