A control method and control system for an engine and its cooling nozzle
An engine cooling and control method technology, which is applied in the direction of engine cooling, coolant flow control, engine components, etc., can solve problems such as excessive fuel injection, failure to consider engine thermal load conditions, affecting engine thermal efficiency, etc.
Active Publication Date: 2017-11-10
WEICHAI POWER CO LTD
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[0007] Obviously, the above two methods do not take into account the working conditions of the engine heat load, and cannot spray the actual required amount of oil according to the actual heat load borne by the piston. thermal efficiency
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[0037] The core of the present invention is to provide a control method for engine cooling nozzles, which can be used to cool the engine oil according to the current speed and power output when the engine is at a stable thermal efficiency, so as to avoid poor thermal efficiency of the engine caused by too much or too little cooling oil phenomenon, to ensure the stability of the engine. In addition, another core of the present invention is to provide a cooling nozzle control system and an engine including the system.
[0038] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0039] Please refer to figure 1 , figure 1 It is a flowchart of a specific embodiment of the method for controlling the engine cooling nozzle provided by the present invention.
[0040] In a specific embo...
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The present invention discloses a control method for engine cooling nozzles, including the following steps: divide the engine speed into at least two preset speed range, and divide the engine power into at least two preset power ranges.The stable and thermal efficiency of the preset speed range and the preset power range is different; obtain the current speed and current power of the engine; determine the preset speed range corresponding to the current speed, and determine the preset power range corresponding to the current power, and the current power range, and the current power range corresponding to the current power.And obtain the required cooling machine oil in the corresponding preset speed range and the corresponding preset power range in the corresponding preset speed range, the corresponding preset power range; output the required cooling machine oil volume.This method realizes the need to allocate the amount of cooling engine oil at the need to output the cooling motor oil when the engine is low -load when the engine idle is low, which ensures the thermal efficiency of the engine.The present invention also disclosed a control system for engine cooling nozzles and the engine of the system.
Description
technical field [0001] The invention relates to the technical field of engines, in particular to a control method and a control system for the engine and its cooling nozzles. Background technique [0002] The cooling nozzle belongs to the cooling system of the engine, especially the engine with a high heat load is generally equipped with a cooling nozzle, which is usually fixed on the oil passage of the engine. During the operation of the engine, the cooling nozzle sprays cooling oil to the piston, and the temperature is relatively high. The low cooling oil takes away the heat of the piston through heat exchange and cools the piston. [0003] In the prior art, there are two control methods for engine cooling nozzles: [0004] The first one is to directly install the cooling nozzle on the auxiliary oil passage. During the entire operation of the engine, the cooling nozzle sprays cooling oil to the piston to cool the high-temperature piston. [0005] The second type is to in...
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IPC IPC(8): F01P7/16F01P3/08
Inventor 谭旭光李文广刘菲丁国栋
Owner WEICHAI POWER CO LTD