Self-adaptive control method for piston cooling nozzle and system

A piston cooling nozzle, adaptive control technology, applied in the direction of coolant flow control, liquid cooling, engine cooling, etc., can solve the risk of overheating, frequent opening and closing of piston cooling nozzles, reduce piston cooling nozzles and electronic control Valve life and other issues, to avoid the risk of overheating, prolong the effect of life

Active Publication Date: 2020-11-03
DONGFENG MOTOR CORP HUBEI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present application provides a piston cooling nozzle adaptive control method and system to solve the problem in the related art that the frequency of opening and closing of the piston cooling nozzle is too frequent, which causes the risk of overheating and reduces the life of the piston cooling nozzle and the electronic control valve.

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  • Self-adaptive control method for piston cooling nozzle and system
  • Self-adaptive control method for piston cooling nozzle and system

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Embodiment Construction

[0052] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.

[0053] The embodiment of the present application provides an adaptive control method and system for the piston cooling nozzle 6, which can solve the problem that the frequency of opening and closing of the piston cooling nozzle 6 in the related art is too frequent, which causes the risk of overheating and reduces the electronic temperatu...

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Abstract

The invention relates to a self-adaptive control method for a piston cooling nozzle and a system, and the method comprises the following steps: enabling the piston cooling nozzle to be closed by default when an engine is powered on, operates or stops; judging whether engine oil temperature is lower than a closing temperature limit value or not in real time; and when the engine oil temperature is lower than the closing temperature limit value, whether the piston cooling nozzle is opened or not is determined according to the engine rotating speed, load, detonation and preignition conditions. According to the self-adaptive control method for the piston cooling nozzle, frequent opening and closing, triggered by a single factor, of the piston cooling nozzle when the working condition of the engine is changed are avoided, the overheating risk is avoided, and meanwhile the service life of the piston cooling nozzle and the service life of an electronic control valve are prolonged.

Description

technical field [0001] The present application relates to the field of engine control, in particular to a piston cooling nozzle adaptive control method and system. Background technique [0002] The engine lubrication system plays the role of providing lubrication and protection for the oilers of the various systems of the engine. Piston cooling nozzles are installed on the engine to reduce the thermal load of the piston and strengthen the lubrication of the piston pin and connecting rod bearings. [0003] The existing disclosed technology controls the opening and closing of the piston cooling nozzle according to the relationship curve calibrated between the cooling nozzle opening and closing and the rotational speed, torque (load) and oil temperature parameters; and controls the opening and closing of the piston cooling nozzle when knocking and pre-ignition occur. . [0004] But in fact, the change of engine speed and load is sudden, and the frequency of opening and closing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01P3/08F01P7/16F01P7/14
CPCF01P3/08F01P7/167F01P2007/146
Inventor 秦龙刘磊翟刚赵宁
Owner DONGFENG MOTOR CORP HUBEI
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