Professional China Howo Engine Parts - Thermostat for Chinese Brand Engine spare parts – CCMIC

Thermostat

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description

Previous engine thermostat installation location: thermostat installed in the upper part of the engine cooling water outlet most of the engine thermostat, ever is installed in the upper part of the engine cooling water outlet. Such a set amount is easy to repair, replacement of cooling water at the same time, make the air easy to discharge, not easy to make the system produces gas cloud.

This arrangement has the advantage of simple structure, easy to eliminate air bubbles in water cooling system; The downside is working in the thermostat will produce an oscillation phenomenon. Also some in a water pipe of the radiator. This arrangement can help to reduce or eliminate the thermostat oscillation phenomena, and can precisely control the coolant temperature, but its complex structure, high cost, used for high performance cars and more often on the high-speed car in winter.

Method of determining whether a thermostat damage
When the engine cold start car running, such as water tank water chamber inlet line and cooling water flow, shows the thermostat main valve can not close; When the engine cooling water temperature more than 70 c, without cooling water flow, water tank water chamber inlet line shows thermostat main valve can’t normally open, and it needs to be repaired.
A thermostat can be check in the car, the method is as follows:
After the engine start check: If open the radiator cap of water, radiator cooling water in peace, indicates thermostat works well, otherwise, said thermostat work properly. This is because, when the water temperature below 70 ℃, the thermostat expansion tube was contracting, the main valve closed; When the water temperature higher than 80 c, the expansion tube, the main valve is opened, the radiator in the circulating water began to flow. When water thermometer instructions below 70 ℃ C, radiator inlet line if there is water flow, the water temperature is warm, says thermostat main valve closed lax, early to make cooling water circulation.
Water temperature rise after the check:
Engine early work, the water temperature rises quickly; When water thermometer indicates 80, rising at a slower pace, indicates thermostat to work normally. Conversely, if the water temperature has been rising quickly when the internal pressure reaches a certain extent, suddenly boiling water overflow, suggests that the main valve with binding, suddenly opened. In 70 ℃ water thermometer indicator C – 80 – C, open the radiator cover and the radiator water switch, feel the water temperature, if all hot show thermostat works well; If the radiator and water inlet water temperature is low, and the radiator water chamber inlet line does not have the water out or running water, thermostat main valve cannot open.A binding or closed lax thermostat should be removed clean or repair, cannot be used on.

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