Small circulation structure for cooling system of automobile engine

Abstract

The invention relates to a small circulation structure for a cooling system of an automobile engine, which comprises a thermolator consisting of a thermolator seat and a thermolator cover, wherein the thermolator seat is provided with an inlet of the thermolator seat and a heating ventilation branch; the thermolator cover is provided with an outlet connected with a radiator and a water inlet pipe branch connected with the engine; a small circulation channel of the thermolator seat and a small circulation channel of the thermolator cover are arranged between the heating ventilation branch of the thermolator seat and the water inlet pipe branch of the thermolator cover to form a small circulation channel consisting of the inlet of the thermolator seat, the heating ventilation branch, the small circulation channel of the thermolator seat, the small circulation channel of the thermolator cover and the water inlet pipe branch; and during cold start, cooling liquid passes through the small circulation channel and enters the water inlet pipe of the engine from a water jacket outlet of a cylinder cover. The traditional small circulation externally connected hose is arranged onto the thermolator seat and the thermolator cover to form an integrated structure, so the structure is simplified, solves the problems of easy aging and invalidation and easy water leakage of the hose, improves the reliability of small circulation, and ensures the performance of cold start of the engine.

Description

technical field [0001] The invention belongs to the automobile engine cooling system technology, in particular to a small circulation structure of the automobile engine cooling system. Background technique [0002] In order to ensure reliable, stable and durable operation of the engine, the cooling system needs to be kept within a certain temperature range. In the process of starting a cold engine, the temperature of the coolant is low, and the thermostat is closed. At this time, the coolant passes through the small circulation channel and directly returns to the internal water jacket of the engine for circulation without passing through the radiator, so that the temperature of the coolant rises rapidly; this is a small cycle. When the temperature of the coolant is too high, the thermostat will automatically open, and the coolant will enter the channel of the radiator through the thermostat, and return to the inside of the engine after being cooled by the radiator to cool d...

AI Technical Summary

Problems solved by technology

Because the hose needs to be installed, the assembly process is increased, and the cost is increased. The hose is prone to aging and failure, and the clamp fastening method is not reliable for leak prevention, and it is easy to leak, which in turn affects the cold start performance of the engine.

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