A method and system for self-adaptive control of piston cooling nozzle

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

Active Publication Date: 2021-09-17
DONGFENG MOTOR CORP HUBEI
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  • Summary
  • 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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  • A method and system for self-adaptive control of piston cooling nozzle
  • A method and system for self-adaptive control of piston cooling nozzle

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Embodiment Construction

[0050] 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.

[0051] 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 application relates to a piston cooling nozzle adaptive control method and system. The method includes the following steps: when the engine is powered on, running or shutting down, the piston cooling nozzle is closed by default; it is judged in real time whether the engine oil temperature is lower than the shutdown temperature limit; when the engine When the engine oil temperature is lower than the cut-off temperature limit, the piston cooling nozzle is opened or not according to the engine speed, load, knock and pre-ignition conditions. The piston cooling nozzle adaptive control method provided by this application avoids the frequent opening and closing of the piston cooling nozzle triggered by a single factor when the engine operating condition changes, avoids the risk of overheating, and is conducive to extending the piston cooling nozzle and the electronic control valve. lifespan.

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 Patents(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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