Liquid Cooling TRIZ Cases

A bypass passage parallel to the engine attachment surface cuts valve housing depth while preserving liquid-tight cooling water sealing.

A fixed retaining element keeps the spray nozzle screw captive without O-rings or glue, preventing particle debris, extra cost, and screw loss.

A crossover valve heats low-temperature EGR components before LP EGR starts, preventing cold-start condensation and ice near the compressor inlet.

Separated fluid channels and PCM-filled conductive walls combine latent heat storage with direct fluid heat exchange in a lighter exchanger.

A main valve and nested sub-valve split coolant flow between the cylinder block and head to speed cold-start warm-up and maintain precise cooling.

Friction welding with torque-transmitting engagement structures joins an internally cooled valve base while avoiding stem twisting and high-cost welding.

A porous membrane seals gasket degassing openings to vent gas while blocking coolant leaks, preserving split-engine cooling control.

Directly coupling the oil pump and heat exchanger shortens oil paths, cuts piping space and resistance, and lowers cavitation risk.

Vertical stacking of prime mover and lube oil cooling cuts fracturing pump footprint while improving heat transfer and lowering operating temperature.

An elliptical piston cooling channel spreads crown stress, enabling closer crown cooling with lower temperature and better durability.

Active KKD valve actuation under controlled engine and oil conditions improves oil pressure fault diagnosis without extra sensors.

A multi-port valve varies coolant routing during cold start and normal driving to speed engine warm-up, protect fuel efficiency, and balance cooling.

Engine waste heat and generated power run on-site plant extraction and separation, cutting transport risk, cost, and traceability gaps.

Cooling oil routed from the piston through the connecting rod lubricates the big-end bearing without crankshaft oil bores, cutting complexity and fuel use.

A cooling-gallery boss retains the ring alignment pin and splits oil flow in an outboard piston to prevent blockage and keep cooling even.

A soft top-land coating wears locally during operation to minimize piston-to-flame-ring clearance and reduce waste volume without tight tolerances.

Magnetic force balances wax expansion and contraction to simplify exhaust heat recovery valve actuation, cut parts, and reduce push rod noise.

A pressure-receiving surface sized below the sliding contact area keeps sealing force in check, reducing leakage, abrasion, and actuator demand.

A pressure-responsive valve adjusts piston cooling flow to match engine demand while avoiding pump pressure losses and wasted drive power.

Sealed outer and undercrown piston galleries use cooling media to limit heat loss, reduce oil coking, and improve brake thermal efficiency.

A rotary valve member with multiple axial openings controls cooling-water flow while fitting between the engine and power converter.

A piston valve with transverse and longitudinal oil ducts maintains concentrated cooling jets, high volume flow, and low vibration.

A hardened protective edge around the thermostat insertion hole resists jiggle valve wear under low coolant pressure and preserves smooth flow.

Overlapping outlet ports around a rotatable valve member shrink cooling-water valve thickness for tight engine packaging while preserving sealing.

Variable pump and valve control matches coolant flow to engine and auxiliary heat demand, cutting energy use while keeping temperature in range.

Parallel oil jets cool the piston underside to cut compressor oil carryover while maintaining cylinder wall lubrication and cleaner discharge air.