Electronic control diagnosing engine water temperature system and method

Abstract

The invention discloses an electronic controldiagnosing engine water temperature system and method. Theelectronic control diagnosing engine water temperature system comprises an ECU, a cooling circulation loop and a plurality of cooling bodies located on the cooling circulation loop, the cooling circulation loop passes through the cooling bodies, a plurality of detecting devices for sensing the state of the cooling bodies and a plurality of flow control devices are distributed on the cooling circulation loop,and the detecting devices and the flow control devices are connected with the ECU; andthe ECU controls the flow control devices to act by receiving and processing information of detecting devices. A control device is used for controlling to form a complete electronic control loop;andthe water flow is reasonably distributed according to different working loads and rotational speeds of an engine, the water temperature is displayed in a user interface in real time,if an abnormalityoccurs, an alarm can be timely given, and safety of vehicle driving can be guaranteed.

Description

technical field [0001] The invention relates to automobile cooling, in particular to an electronic control system and method for diagnosing engine water temperature. Background technique [0002] The function of the engine cooling system is to dissipate part of the heat absorbed by the heated parts in time to ensure that the engine works at the most suitable temperature state. The cooling system of the engine is divided into air-cooled and water-cooled. The cooling system that uses air as the cooling medium is an air cooling system; the cooling system that uses cooling liquid as the cooling medium is called a water cooling system. [0003] The cooling system of the automobile engine is a forced circulation water cooling system, that is, the water pump is used to increase the pressure of the coolant, and the coolant is forced to circulate in the engine. The cooling system is mainly composed of water pumps, radiators, cooling fans, compensation water tanks, thermostats, engi...

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Problems solved by technology

[0005] During the normal use and maintenance of the car, the coolant needs to be supplemented regularly and quantitatively. If the owner does not replenish the coolant in time, the coolant in the engine will be too little, and the cooling system will fail, which will lead to engine failure.

In addition, the traditional engine only has a water temperature sensor on the cylinder head of the main cycle of the engine. This sensor can only detect the water temperature of the water outlet of the engine cylinder head, and cannot detect the water temperature of the large cycle, heating cycle water temperature, supercharger cooling cycle water temperature, and oil cooling. The circulating water temperature of the engine and the cooling circulating water temperature of the automatic transmission; the ideal coolant filling volume of the engine is certain, too much or too little engine oil will cause the engine to be abnormal, and only a certain range of the coolant volume can be monitored through the scale line of the filling pot. However, it is impossible to accurately control the amount of coolant in the engine; the flow distribution of the small engine cycle, the large cycle, and the auxiliary cycle requires different amounts under different loads and speeds. At present, once the cooling system of the traditional engine is designed, there is only one temperature control. controller and a water temperature sensor, the flow distribution is fixed and cannot be automatically adjusted according to the actual operating conditions

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