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Crankcase ventilation systems and vehicles

A crankcase ventilation and crankcase technology, which is applied in the crankcase ventilation system and the field of vehicles, can solve the problems of substandard emissions, increased vehicle costs, and difficulty in meeting the requirements of emission regulations, so that it is not easy to leak and has a good protective effect Effect

Active Publication Date: 2020-12-08
BEIQI FOTON MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the vehicle is just started, the oil and gas discharged into the engine by the vacuum pump will cause an instantaneous positive pressure of the parameters in the crankcase, which will cause the hidden danger of substandard emissions when the vehicle is started, making it difficult for the vehicle to meet the requirements of emission regulations
In the related technology, in order to realize the situation that the pressure of the engine crankcase is negative pressure at all times, the traditional mechanical vacuum pump is replaced by an independent electronic vacuum pump, but this kind of vacuum pump needs to be arranged in a separate space on the vehicle, and the cabin of the existing model The structure is greatly adjusted, and the cost of the electronic vacuum pump is 4-5 times higher than that of the traditional mechanical vacuum pump, which will increase the cost of the vehicle

Method used

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  • Crankcase ventilation systems and vehicles
  • Crankcase ventilation systems and vehicles
  • Crankcase ventilation systems and vehicles

Examples

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Embodiment Construction

[0022] 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 only for explaining the present invention and should not be construed as limiting the present invention.

[0023] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invent...

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PUM

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Abstract

The invention discloses a crankcase ventilation system and a vehicle. The crankcase ventilation system comprises a crankcase, a vacuum pump, a transition cavity and a one-way valve, wherein the vacuumpump is suitable for being connected with an external engine; a compressing cavity of the vacuum pump is connected with the crankcase through the transition cavity; and the one-way valve is connectedbetween the transition cavity and the crankcase, and is in one-way conduction from the transition cavity to the crankcase. The crankcase ventilation system disclosed by the invention can effectivelyprevent the situation that in the starting process of an engine, positive pressure of the crankcase is generated, oil gas is not liable to leak, and the protective effect on the vacuum pump is good.

Description

technical field [0001] The invention belongs to the technical field of vehicle manufacturing, and in particular relates to a crankcase ventilation system and a vehicle. Background technique [0002] The vacuum system is an important part of the whole vehicle. At present, the vacuum pump of the whole vehicle is generally driven by the engine. The structure, driving mode and layout of the vacuum pump are simple, but the vacuum pump will generate oil and gas during the working process, and the exhaust gas will be discharged to the crankshaft of the engine. It is filtered through the oil-gas separation system together with the exhaust gas in the engine crankcase, and the exhaust gas is discharged into the intake system for recombustion and decomposition. [0003] When the vehicle is just started, the oil and gas discharged into the engine by the vacuum pump will cause an instantaneous positive pressure in the parameters of the crankcase, which will cause the hidden danger of sub...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01M13/00
Inventor 张旭邓厚劲
Owner BEIQI FOTON MOTOR CO LTD
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