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Pressure regulating method, regulating device and regulating system of pcv valve body

A technology of pressure adjustment and adjustment method, which is applied in the direction of machines/engines, crankcase ventilation, mechanical equipment, etc., and can solve problems such as difficulty in ensuring the pressure in the PCV valve body

Active Publication Date: 2021-04-16
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to at least solve the problem that the existing method for controlling the pressure in the PCV valve body is difficult to ensure that the pressure in the PCV valve body must be a negative value

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  • Pressure regulating method, regulating device and regulating system of pcv valve body

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Embodiment Construction

[0033] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0034] It should be understood that terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may also be meant to include the plural forms unless the context clearly dictates otherwise. The terms "comprising", "comprising", "containing" and "having" are inclusive and thus indicate the presence of stated fea...

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Abstract

The invention belongs to the technical field of gas machines, and in particular relates to a pressure regulating method, a regulating device and a regulating system of a PCV valve body. The pressure regulating method of the PCV valve body of the present invention comprises the following steps: obtaining the current pressure value of the PCV valve body; according to the current pressure value of the PCV valve body being greater than the set pressure value, controlling the gas in the PCV valve body to pass into the top of the diaphragm; According to the current pressure value of the PCV valve body is not greater than the set pressure value, the air is controlled to pass into the top of the diaphragm. In the pressure regulating method of the PCV valve body of the present invention, the current pressure value of the PCV valve body is greater than the set pressure value, and the gas in the PCV valve body is passed into the top of the diaphragm, which can ensure that the pressure in the PCV valve body is at the set pressure value Inside, the current pressure value of the PCV valve body is not greater than the set pressure value, and the atmosphere is controlled to enter the top of the diaphragm, so that the pressure inside the PCV valve body must be in a negative pressure state.

Description

technical field [0001] The invention belongs to the technical field of gas machines, and in particular relates to a pressure regulating method, a regulating device and a regulating system of a PCV valve body. Background technique [0002] The existing PCV (English name: Positive Crankcase Ventilation, Chinese name: PCV valve body ventilation) valve structure consists of a diaphragm, spring, inlet and outlet. The spring force and the atmosphere generate pressure on the upper surface of the diaphragm, and the PCV valve body Under the combined effect of the pressure of the gas on the lower surface of the diaphragm, the diaphragm reaches an equilibrium state. [0003] The pressure of the PCV valve body must maintain a negative pressure during the closed cycle, but it is difficult to ensure that the pressure in the PCV valve body must be negative to adjust the opening of the PCV valve only by the atmosphere, the gas in the PCV valve body and the spring pressure. Contents of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01M13/00
CPCF01M13/0011F01M2013/0016F01M2013/0022
Inventor 丰平蔡海杰赵利欣秦成旋赵娜
Owner WEICHAI POWER CO LTD