Internal Combustion Piston Engines TRIZ Cases

A tubular heating device injects fuel into a combustion chamber to generate hot air flow for rapid catalytic converter activation.

Inverting spring bias from closed to open position removes governor resistance, eliminating power surges and ensuring smooth torque delivery.

A single locking element diverts exhaust gas between turbine flows to increase engine braking power.

Three parallel cylindrical exhaust systems arranged in a nested configuration optimize space utilization within compact work machine engine rooms.

Adjusting porosity and emission cell cross-sections balances PM capturing efficiency against pressure loss increases from heavy catalyst loading.

A rotary internal combustion engine uses a modular sleeve with integrated ports and spring-activated crossover seals to maintain constant pressure.

Segmented cooling bodies for metering modules use drainage openings to remove fluid residue, preventing corrosive sumps near electrical contacts.

A mobile recycler pivots a support base to lower the reducing agent tank for ground-level access.

Routed post-turbocharger exhaust pipe uses gradual bends to minimize engine backpressure while conserving engine compartment space.

Flattened inlet duct bottom creates a tumble edge that boosts charge movement by 40-70% while resolving insufficient mixture preparation in combustion chambers.

A heating device determines actual ohmic resistance using electrical current and voltage measurements to ensure proper operation.

Asymmetric branch passage arrangement equalizes blow-back flow influence across cylinders in internal combustion engines.

Angled valve seat geometry combined with an intermediary seal member prevents gas leakage from the turbine outlet into the actuator conduit.

Electronic control unit filters pressure signals to detect dosing line obstructions in diesel exhaust fluid delivery systems.

Hydraulic mechanisms shift scavenging ports along the piston stroke to resolve fuel type adaptability trade-offs.

Controller adjusts outboard motor rotation phase to cancel noise, avoiding speaker complexity and space constraints.

Electronic control unit prevents unexpected engine restarts after stopping cruise control, maintaining braking force and driver confidence.

A one-piece web-like connecting component links bearing elements to separate mechanical and thermal loads in supercharging systems.

A crescent-shaped flow obstruction modifies the rib terminal end to control fluid movement within heat exchanger passages.

A variable event angle mechanism adjusts intake valve lift and timing to optimize cylinder gas flow.

A gas inlet duct uses a springboard shape and concave zone to deflect flow into tumble-type movement.

A particle filter assembly uses cold flame gas to remove soot deposits from diesel exhaust systems.

Segmented exhaust pipe sections with varying internal areas support large catalysts in straddled vehicles.

A water discharge passage routes moisture from a control valve housing bottom surface through an insert clearance gap to the air intake port.

Dynamic shutters adjust the pre-chamber orifice area to resolve reliability issues from hot spots and ensure stable ignition across engine loads.

Salicylate detergents and sulfurized fatty acid esters prevent high-temperature varnish formation in turbocharged engines exceeding 300°C.

Upstream projections on the inner exhaust pipe wall block condensed water from reaching sensors, preventing malfunction during low-temperature operation.

A voltage converter regulates heating power in vehicular fluid injection systems to maintain consistent thermal output across varying battery voltages.

A reducing agent delivery device uses a compensation element to manage internal volume changes during operation.

Asymmetric rectangular pistons resolve overhead space constraints by enabling multi-stage valves, while geometry-based sealing reduces lubrication needs.

A particulate filter calculates trapped soot quantity by measuring electrical resistance across the substrate.

Offset exhaust and rinse windows on the cylinder perimeter separate gas exchange processes, improving volume efficiency and reducing fuel consumption.

A process controller calculates total washing liquid flow rate by summing individual nozzle flows derived from pressure measurements at the uppermost active spray nozzle.

A controller adjusts reductant dosing based on inlet temperature to optimize catalyst performance.

A ducted combustion chamber channels fuel jets through rectangular walls to promote uniform premixing of air and fuel.

A single air control flap directs gas past a mechanical compressor, removing pressure loss from extra valves while regulating fresh gas supply.

Active dry friction clutches disconnect rotating hypoid gearsets during non-torque modes, reducing churning losses and improving fuel efficiency.

Adjusting O2 purge durations by catalyst state resolves the trade-off between purification reliability and fuel consumption.

A sealed bushing mediates dosing pipe access through a diffuser cone, preventing urea leakage into the turbine housing and reducing corrosion.

Unified shaft merges turbine and engine drive paths to optimize thermal efficiency and reduce fuel consumption.

A multi-path exhaust gas treatment device adjusts flow rates to dilute nitrogen oxide concentrations before CO2 recovery.

Parallel diesel exhaust treatment system splits flow through multiple catalysts to reduce back pressure while enhancing urea vaporization.

A fuel filter heating device uses a temperature-sensitive actuator to move a heat transfer medium against an exhaust gas pipe for passive warming.

A gas mixer employs a displaceable body to adjust air and fuel flows, eliminating frequent component changes required for different calorific values.

Electric motor assists compressor drive force to maintain boost pressure during low exhaust energy conditions.

Variable inlet resistance in parallel exhaust banks directs flow through DOC and SCR catalysts, optimizing the NO to NO2 ratio while minimizing backpressure.

A fluid injector uses a compressible spacer to absorb expansion forces from freezing reductant.

Replacing optical imaging with mechanical contact eliminates lighting errors and reduces inspection time for honeycomb body shape measurement.

Inverting exhaust port location reduces heat release to the engine compartment while maintaining turbocharger efficiency.

A hybrid vehicle control system delays auxiliary power activation to decouple accelerator pedal input from engine start.