GMB proudly announces that all principal component parts are designed, manufactured and tested in house, such as bearings(life), impellers (pumping water), mechanical seal kits(sealing) and housings(ruggedness). Integration of these parts through our experience and accumulated knowledge shall lead to total quality assurance, unsurpassed by anybody else.
Coverage from domestic applications to foreign, from micro automobile to truck and industrial and from outdated to future models.
Functions
Vital part required to circulate coolant around engine. Heat produced by engine combustion is absorbed by coolant which then passes through radiator to cool down before returning to engine. Water pump is situated between radiator and engine and driven by pulley through timing belt or fan belt. Water pump causes coolant to circulate.
Structure
Consists of body (aluminum diecast, cast iron, aluminum gravity etc), flange(forged steel, sintered iron etc), impeller (pressed steel, cast iron, synthetic resin etc), water pump bearing and mechanical seal kit.
Its material is decided dependent upon performance level, quality as well as customer requirements and working conditions. Revolution power of crankshaft is transmitted to impeller through water pump bearing. Impeller vanes drive coolant out into circulation jacket.
Vortex chamber of water pump filled with coolant is separated from water pump bearing by mechanical seal kit.
A sliding seal, like mechanical seal kit, must be lubricated all the time it is moving by coolant fluid.
Engulfed(lubricating) coolant evaporates out into water pump bearing side and exits through weap hole on body.
GMB produces principal components “bearing” (life) and “diecast body” (strength). GMB fan clutch assures the optimal quality through reliability based on our wide experience and knowledge developed from our own production techniques
Functions
It regulates cooling air flow by controlling fan speed in accordance to ambient air temperature around radiator area so that optimal heat balance is maintained in engine’s cooling system. Fan clutch driven by engine revolution can continuously change its fan speed by regulating silicone oil control by temperature sensor (bimetal). Whether driving on highway or in traffic jams it can quickly respond to temperature change. Controlling fan speed will minimize power loss, realize optimal temperature level, and enhance quietness.
Structure
Temperature sensitive bimetal turns slide valve to open and close flow control aperture. Opening and closing action connects or disconnects passage of silicone oil in reservoir to function chamber (labyrinth). Raised temperature opens flow control aperture by turning slide valve and centrifugal force pushes silicone oil flowing into function chamber. Viscous silicone oil mass transmitts pulley shaft revolution through rotor and case to fan. Slide valve closes flow control aperture at lower temperature. Silicone oil in function chamber discharges through exit aperture by centrifugal force coming back to reservoir. Reduced mass of slicone oil loses torque and rotor idles. Then fan reduces revolution.
