Control method and system capable of carrying out accurate thermal management on engine
A control method and control system technology, applied in the direction of engine cooling, engine components, machine/engine, etc., can solve the problems that are not conducive to engine thermal management control, poor adjustability, etc., to reduce power consumption, precise thermal management, The effect of improving economy
Pending Publication Date: 2021-02-19
GUANGXI YUCHAI MASCH CO LTD
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Problems solved by technology
At each speed of the engine, the auxiliary work of the water pump and fan is constant, and the adjustability is poor, which is not conducive to the precise thermal management control of the engine
Method used
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[0026] The present invention will be further described below in conjunction with the specific embodiments in the accompanying drawings.
[0027] refer to Figure 1-3 , a control method for precise thermal management of the engine, supplying coolant to the engine 2 through the electronic water pump 1, and cooling the engine 2 through the electronically controlled silicon oil fan 3; setting the fan according to the engine speed, coolant temperature, and air temperature of the intercooler The speed map and the fan speed map are obtained through the calibration of the test bench, and the fan speed map is stored in the ECU; the joint control of the electronic water pump 1 and the electric silicon oil fan 3 is as follows:
[0028] When the engine 2 is just started and needs to be warmed up, the electronic water pump 1 is controlled to supply coolant at the first flow rate, which is 10% to 20% of the rated flow rate of the electronic water pump 1, so that the engine 2 can be heated u...
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The invention discloses a control method capable of carrying out accurate thermal management on an engine, relates to engine control, and solves the technical problem that accessory work of an existing water pump and an existing fan cannot be adjusted. The method comprises the steps that cooling liquid is supplied through an electronic water pump, and an electronic control silicone oil fan dissipates heat; a fan rotating speed pulse spectrum is formulated according to the engine rotating speed, the cooling liquid temperature and the intercooler air temperature; when the engine is just started,the electronic water pump supplies cooling liquid at a first flow rate; when the engine is heated, the electronic water pump supplies cooling liquid at a second flow; when the engine operates at a high rotating speed and a high load, the electronic water pump supplies cooling liquid at a third flow; and according to the actual engine rotating speed, the actual cooling liquid temperature and the actual intercooler temperature, the fan rotating speed pulse spectrum is inquired to obtain speed parameters, and the electric control silicone oil fan is controlled to operate according to the speed parameters. The invention discloses a control system capable of carrying out accurate thermal management on the engine. According to the method, accurate heat management of the engine is achieved by accurately controlling the electronic water pump and the electric control silicone oil fan to work.
Description
technical field [0001] The present invention relates to engine control, more specifically, it relates to a control method and system capable of precise thermal management of the engine. Background technique [0002] At present, the water pump and fan of the engine use a mechanical water pump and a direct-connected fan, which are driven by a belt and the crankshaft of the engine, and have a fixed transmission ratio. At each speed of the engine, the auxiliary work of the water pump and fan is constant, and the adjustability is poor, which is not conducive to precise thermal management control of the engine. Contents of the invention [0003] The technical problem to be solved by the present invention is aimed at the above-mentioned deficiencies of the prior art. The first purpose of the present invention is to provide a control method capable of precise thermal management of the engine. [0004] The second object of the present invention is to provide a control system capab...
Claims
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IPC IPC(8): F01P7/04F01P7/16F01P11/14
CPCF01P7/042F01P7/026F01P7/16F01P11/14
Inventor 曾泽先刘肖毅刘红武
Owner GUANGXI YUCHAI MASCH CO LTD