Liquid Cooling TRIZ Cases

A larger downstream cooling channel helps merged flow from adjacent bores maintain coolant rate without enlarging the cylinder block.

A cooler in the engine exhaust path protects the purification device from heat while enabling faster catalyst activation and stable emissions control.

Varying passage diameters between cylinder jackets and head jackets balances coolant flow, reducing overheating and sealing issues.

A valve-controlled bypass air path adjusts carbureted engine mixture across altitude and temperature changes without manual jet replacement.

Annular coolant passages around exhaust valve seats improve 360-degree cooling, lower coolant pressure, and protect hot valve bridges.

Placing the exhaust gas sensor between the cylinder head and radiator protects it from impact while preserving ground clearance and detection accuracy.

Dual coolant paths and flow control speed engine warm-up, limit post-warm-up overheating, and reduce unburned fuel and knocking.

Positioning the common rail above the flywheel housing frees cylinder-block side space, improves layout flexibility, and protects fuel components.

A posture-changing contact member supports the spacer under coolant flow while conducting heat from the bore upper part to improve cooling.

Separate intake port routing creates space for a cooling chamber around the injection device, improving cylinder head heat removal.

A one-way clutch keeps the cooling pump impeller rotating in one direction, extending rubber impeller life and removing the shift mechanism.

A dual-loop cooling layout uses seawater only in a heat exchanger, protecting the motor cooling jacket from corrosion while maintaining motor cooling.

Passage geometry redirects cooling water and exhaust flow to stop backflow and keep fine-object collection effective without a relief valve.

Dual water jackets and valve control cut warm-up time while improving cylinder head cooling under high thermal load.

Real-time traffic prediction triggers exhaust backpressure early to preserve aftertreatment temperature during low-speed driving without extra fuel use.

Multiple parallel flow conduits and a constricted outlet keep the cooling oil jet coherent over long spray distances for effective piston cooling.

An eccentric overflow opening redirects coolant to thermally critical cylinder head regions, improving heat removal with less coolant.

Square-wave fin protrusions create turbulent oil flow and more even distribution, improving oil-to-coolant heat exchange under high load.

A one-way clutch keeps the cooling pump impeller rotating in one direction, extending rubber impeller life without a shift mechanism.

A dual cooling loop uses seawater only in a heat exchanger, protecting the motor cooling jacket from corrosion while maintaining motor cooling.

Bypass valve control lowers oil target temperature at low torque, helping restart pressure build faster while protecting engine components.

Fuel pressure drop and vaporization cool engine and non-engine components to prevent pre-ignition while preserving fuel for combustion.

A dual oil circuit keeps simple two-stroke engine lubrication while adding a crankshaft-driven high-pressure loop for accessory lubrication and hydraulic power.

A shaft-aligned inlet channel with an internal filter keeps debris out of the water pump while maintaining efficient cooling water flow.

Pooling cavities, lubrication passages, and a check valve keep gudgeon pin joints supplied with oil to prevent scuffing and seizure.

A convex feature inside the piston skirt retains lubricating oil and helps maintain a stable cylinder wall oil film to reduce friction.

A skirt-side oil flow path guides cooling oil from the piston head discharge port onto the cylinder wall to build a thicker oil film and cut friction.