Cooling system, control method applying cooling system and vehicle

Abstract

The invention discloses a cooling system, a control method and a vehicle. The cooling system comprises a cooling unit (2) communicated with an engine water jacket (9) for cooling a coolant flowing through the engine water jacket, a first reflow pipeline (3) respectively communicated with the cooling unit and the engine water jacket and communicated with a hydraulic retarder (10) for enabling the coolant flowing out from the cooling unit to absorb the heat of the hydraulic retarder and to cool and reflow, a second reflow pipeline (4) respectively communicated with the cooling unit and the engine water jacket for cooling and reflowing the coolant flowing out from the cooling unit, and a loop switcher (5) arranged between the cooling unit and the first reflow pipeline and the second reflow pipeline for controlling the conduction and the cutoff of the first reflow pipeline and the second reflow pipeline. The cooling system can separate the hydraulic retarder from a cooling pipeline of an engine to reduce the fuel consumption of the engine.

Description

technical field [0001] The invention relates to a heat dissipation system, in particular to a heat dissipation system suitable for an engine and a hydraulic retarder, a control method using the heat dissipation system and a vehicle. Background technique [0002] As a means of auxiliary braking, the application of hydraulic retarder on heavy commercial vehicles is gradually increasing. Vehicles equipped with hydraulic retarders can greatly reduce the use of service brakes when going down long slopes, and ensure that the service brakes are always in good condition, thereby ensuring driving safety. [0003] However, there are also some problems in the use of the hydraulic retarder. The main manifestations are: the heat dissipation system of the hydraulic retarder is shared with the engine heat dissipation system, and the heat dissipation demand during braking is often greater than that of the engine when it is working. The heat dissipation system designed for engine heat dissi...

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Problems solved by technology

[0003] However, there are also some problems in the use of the hydraulic retarder. The main manifestations are: the heat dissipation system of the hydraulic retarder is shared with the engine heat dissipation system, and the heat dissipation demand during braking is often greater than that of the engine when it is working. The heat dissipation system designed for engine heat dissipation has the defect of insufficient heat dissipation capacity. Although the heat dissipation capacity can be increased by appropriately increasing the radiator and engine water pump, the improvement is limited

At the same time, since the heat dissipation pipeline of the hydraulic retarder is connected in series with the original engine heat dissipation circuit, when the engine is working normally, the heat dissipation pipeline of the hydraulic retarder will increase the water resistance of the heat dissipation circuit, thereby increasing power consumption and increasing Increased engine fuel consumption

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