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Engine crankcase ventilation system

A ventilation system and crankcase technology, applied in crankcase ventilation, engine components, machines/engines, etc., can solve problems such as high cost and adding pressure sensors

Pending Publication Date: 2022-02-22
深圳臻宇新能源动力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, this design needs to increase the pressure sensor and wiring harness arrangement, and the cost is high

Method used

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  • Engine crankcase ventilation system
  • Engine crankcase ventilation system
  • Engine crankcase ventilation system

Examples

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Embodiment Construction

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0041] Refer below Figure 1-Figure 3 Describe the ventilation system 100 of the engine crankcase according to the embodiment of the present invention, including: crankcase 1, intake manifold 2, high pressure load outlet pipeline 3, low pressure load outlet pipeline 4, supercharger 6 and fault detection valve 5 .

[0042] Specifically, one end of the intake manifold 2 (for example figure 1 The left end of the shown intake manifold 2) communicates with the crankcase 1, and the high-pressure load outlet pipeline 3 and the low-pre...

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Abstract

The invention discloses an engine crankcase ventilation system which comprises a crankcase, an intake manifold, a high-pressure load air outlet pipeline, a low-pressure load air outlet pipeline, a supercharger and a fault detection valve. The fault detection valve is connected with the high-pressure load air outlet pipeline and the low-pressure load air outlet pipeline. The fault detection valve has an initial state and a fault report state, the fault detection valve is configured to be switched from the initial state to the fault report state when the high-pressure load air outlet pipeline leaks or is disconnected, and the fault detection valve is configured to enable the low-pressure load pipeline to communicate with the external atmosphere in the fault report state. According to the ventilation system of the engine crankcase, the high-pressure load air outlet channel and the low-pressure load air outlet channel are associated through the fault detection valve, and the overall structure is simple, so that the diagnosis precision is improved, the diagnosis range is expanded, the reliability is improved, the structure is simple, the arrangement space requirement is reduced, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of automobile manufacturing, in particular to a ventilation system for an engine crankcase. Background technique [0002] It is pointed out in the related art that usually the crankcase ventilation system of a self-priming engine has an air outlet passage and an air supply passage. The crankcase ventilation system of a supercharged engine has two outlet channels: one is a low-load outlet channel (the supercharger is not working), the other is a high-load outlet channel (the supercharger is working, and the intake manifold is under positive pressure), and the other is a supplementary air channel. gas channel. Integrating the one-way valve in the air supply channel on the body can realize the exemption of the entire air supply channel. [0003] At present, the outlet channel of the self-priming engine and the low-load outlet channel of the supercharged engine may be solved by calibration means. However, for...

Claims

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Application Information

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IPC IPC(8): F01M13/00F02B77/08
CPCF01M13/00F02B77/08F01M2013/0038F01M2013/0044
Inventor 王格温聪
Owner 深圳臻宇新能源动力科技有限公司
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