Oil-gas separation breather valve of oil piston machine for new energy electric bus

Abstract

The invention discloses an oil-gas separation breather valve of an oil piston machine for a new energy electric bus. Due to the fact that oil-gas mixture discharged by a machine body is subjected to oil-gas separation treatment through a breather valve element, lubricating oil returns into the machine again after being separated, loss of the lubricating oil is reduced, meanwhile, the lubricating oil discharged out of the machine is reduced, and pollution of the lubricating oil to the interior of a vehicle and a driving road surface is reduced. In addition, due to the fact that the breather valve element is in the working state all the time, the situation that the breather valve is blocked is greatly reduced, the situation that lubricating oil is explosively sprayed out is effectively avoided, and potential safety hazards are greatly reduced; the breather valve comprises a breather valve lower cover, a breather valve upper cover arranged in the breather valve lower cover in a penetrating mode and the breather valve element arranged in the breather valve upper cover in a penetrating mode, a first lubricating oil return cavity is formed between the breather valve element and the breather valve upper cover, and a second lubricating oil return cavity and a third lubricating oil return cavity are formed in the breather valve lower cover.

Description

technical field [0001] The invention relates to the technical field of ventilation and explosion-proof measures for a fuselage of an oil-piston machine used in a new-energy electric bus, and in particular to an oil-gas separation vent valve for an oil-piston machine used in a new-energy electric bus. Background technique [0002] At present, the oil-piston machine used in new energy electric buses will use a check valve with a spring in its fuselage ventilation and explosion-proof measures. When the pressure of the oil-gas mixture in the fuselage exceeds the opening pressure of the check valve spring, The one-way valve opens and the oil-air mixture is discharged. Doing so creates the following technical problems: [0003] 1. The oil-gas mixture has not undergone oil-gas separation, and the oil mist and gas are discharged together, which increases fuel consumption, and the discharged lubricating oil will pollute the interior of the vehicle or the driving road surface; [00...

AI Technical Summary

Problems solved by technology

[0003] 1. The oil-gas mixture has not undergone oil-gas separation, and the oil mist and gas are discharged together, which increases fuel consumption, and the discharged lubricating oil will pollute the interior of the vehicle or the driving road surface;

[0004] 2. After the machine has been running for a period of time, the lubricating oil discharged from the fuselage will gradually accumulate at the vent hole of the one-way valve. If the one-way valve is blocked, the gas inside the fuselage will not be discharged, which will cause the internal pressure of the machine to rise and cause a safety accident.

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