Coolant Flow Control TRIZ Cases

A slotted link guide retracts the valve member during movement and presses it into sealing contact only when needed, cutting wear and actuator force.

A ferromagnetic flux guide through the rotor enables live-shaft valve actuation while cutting clutch mass, complexity, and leakage risk.

An external PTC heater warms the wax capsule through its outer wall, improving low-temperature valve control without conductor sealing leaks.

A planetary fan drive uses a shared clutch-brake actuation stroke to reverse rotation, clear cooling-system debris, and fit compact engine bays.

Rigid articulated tube connections absorb dimensional variation while maintaining pressure-tight seals and enabling automated module assembly.

Rear-access journal mounting and an integrated ARB guard cut clutch part count, simplify blind installation, and reduce maintenance time.

A clutch-switched hybrid coolant pump combines mechanical and electric drive to maintain flow at low engine speed while limiting electrical power use.

A radially outer pulley ring and independent motor keep the coolant pump compact while delivering variable speed and high torque at low engine speeds.

A speed-responsive locking claw mechanism lets a vehicle fan freewheel after engine stop, cutting pulley wear and noise at lower cost than Visco clutches.

A thin low-friction seal plate and elastic biasing maintain sealing while lowering rotary valve torque in multi-port coolant distribution.

A nested in-hub control unit and hybrid fan drive cut eddy-current interference, save radial space, and reverse airflow to clean radiator cells.

Predictive pump and valve control stabilizes hydraulic fan speed and suppresses peak pressure and pressure hunching in the circuit.

A groove-mounted seal with a limiting structure helps a multi-channel coolant valve prevent leakage while managing compact flow paths.

A cam-guided valve element cuts actuator power and wear by moving with low friction, then pressing into fluid-tight sealing only at closure.

A bypass passage with coordinated flow control and unloading valves cuts fan speed, lowers hydraulic pressure loss, and suppresses surge pressure.

Temperature-responsive valves split coolant between the transmission oil cooler and cabin heater to speed warm-up, prevent overcooling, and reduce wear.

Independent hydraulic oil cooling and heating keeps viscosity in the 60–80°C range, cutting pumping losses and fuel use in self-propelled machines.

Angular-acceleration feedback speeds clutch oil supply adjustment so a cooling fan can reach and hold the target rotation speed faster.

A clutch-switched hybrid pump adds electric impeller drive at low engine speed, maintaining coolant flow without high continuous power demand.

Dual electromagnetic and eddy-current couplings give a vehicle cooling fan three speeds with lower wear, lower power use, and fail-safe cooling.

An axially offset electromagnetic coupling and motor let an engine coolant pump vary impeller speed while cutting radial size and maintaining torque.

Negative pressure in coolant inflow and outflow lines prevents leakage during tool replacement, reducing operator exposure and contamination.

A shared-axis hybrid fan-pump assembly uses friction coupling and dual motors to cool vehicle fluid with lower energy use and wear.

A seal-free rack-and-pinion mechanism adjusts fan blade pitch without hydraulic leakage, cutting complexity, cost, and maintenance.

Recirculating heated enclosure air with an adjustable vent cover helps welding power supplies prevent breather freezing and wet-stacking in cold weather.