Water temperature adjusting loop of engine

Abstract

The invention belongs to the technical field of automobile components, and provides a water temperature adjusting loop of an engine. The water temperature adjusting loop of the engine comprises a hot water tank, wherein a first control valve is arranged between a hot water inlet of the hot water tank and an outlet of the engine; a second control valve is arranged between a hot water outlet of the hot water tank and an inlet of the engine; the hot water inlet is connected with the outlet of the engine or is disconnected from the outlet of the engine through opening or closing of the first control valve; and the hot water outlet is connected with the inlet of the engine or is disconnected from the inlet of the engine through opening or closing of the second control valve. By the hot water tank, the first control valve and the second control valve, hot water of the hot water tank and the engine can be in heat exchange, the temperature rising speed of the engine is increased, the temperature of the engine can reach a specified temperature within a short time, the working efficiency is improved, and the engine is protected.

Description

technical field [0001] The invention belongs to the technical field of automobile parts, and in particular relates to an engine water temperature regulating circuit. Background technique [0002] During the test of the engine, it is necessary to control the temperature of the engine coolant, and keep the coolant in the specified temperature range when the engine is working. [0003] Existing engine water temperature regulation loop, such as figure 1 As shown, the temperature of the coolant is adjusted through the three-way regulating valve 104. Specifically, the engine outlet 101 and the engine inlet 102 are respectively provided with a first temperature sensor 112 and a second temperature sensor 103. When the temperature value of the first temperature sensor 112 is lower than In the specified temperature range, the B-A channel of the three-way regulating valve 104 is fully opened, the C-B channel is completely closed, the coolant flows from the engine outlet 101 through th...

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Problems solved by technology

[0004] Due to the lack of components for heating the coolant or devices for heating the engine temperature in the existing engine water temperature regulation circuit, the rise of the engine temperature depends entirely on the operation of the engine itself, and the rise is slow, which affects the test progress and reduces work efficiency; and the drop of the engine temperature also depends on cooling The water and the coolant exchange heat. Since the temperature of the cooling water is close to the ambient temperature, especially in the hot summer, the water temperature drops very slowly, and the temperature drop of the coolant is greatly affected by the ambient temperature. It is difficult to satisfy the engine's requirements for constant circulation. The specified temperature range seriously affects the progress of the entire test and reduces work efficiency

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