CN212898728U - Engine blowing and leaking device - Google Patents

Abstract

The utility model discloses an engine blows gas leakage device and sets up on an engine assembly, and engine assembly is including a cylinder, a cylinder head and a cylinder head lid, and the cylinder head sets up on the cylinder, and this cylinder head lid sets up on this cylinder head, forms a cylinder head cavity in it, and engine blows gas leakage device including: a honeycomb labyrinth mechanism and a blow-by vent pipe. The honeycomb labyrinth mechanism is arranged in the cylinder head cavity, and a roundabout air-blowing labyrinth path is formed by a plurality of honeycomb notches and a plurality of rib parts of the honeycomb labyrinth mechanism and is provided with a labyrinth path inlet and a labyrinth path outlet; two ends of the blow-by gas vent pipe are respectively communicated with the labyrinth path outlet and the outside of the engine assembly, and the labyrinth path inlet is communicated with the cylinder head chamber. Therefore, the length of the path of the air-blowing leakage can be increased, the oil-gas recovery effect can be further increased, the structure of the honeycomb labyrinth mechanism can be utilized to increase the integral rigidity of the cylinder head cover and reduce the internal noise of the cylinder head, the integral structure is simple and consistent, the honeycomb labyrinth mechanism can be applied in a modularized mode, lighter plastic materials can be used, and the effect of reducing the weight of the whole engine can be achieved.

Description

Engine blowing and leaking device

Technical Field

The present invention relates to an engine air-blowing device, and more particularly to an engine air-blowing device for a motorcycle.

Background

Currently, the engine oil is used inside the motorcycle engine in the market for lubrication and cooling, so as to ensure the normal operation of the parts inside the engine. Generally, in the process of engine operation, the engine ignites oil gas in the cylinder at the spark plug, the explosion generates power to push the piston to drive the crankshaft, gas leaks into the crankcase from the gap between the piston ring and the cylinder wall during explosion, so that the gas pressure in the engine is increased, if the pressure in the engine cannot be balanced, the gas in the crankcase is squeezed when the piston is pushed to move downwards, and resistance is caused to the piston moving downwards, so that the normal operation of the engine is affected. Therefore, in order to adjust the gas pressure inside the engine, a blow-by gas device is provided to exhaust the gas pressure inside the engine. In addition, the exhaust gas leaking into the crankcase increases the internal pressure of the engine, and if the exhaust gas is not discharged in time, the oil seal leaks oil. And because the exhaust gas will be mixed with the oil droplets splashed in the engine to form oil gas, the oil gas must be separated and recovered by a recovery device for recycling.

The engine oil recovery structure design in the existing motorcycle engine can be mainly divided into a centrifugal type and a labyrinth type, wherein the centrifugal type means that oil gas is rotated and thrown to a wall surface by centrifugal force and is condensed and recovered; the labyrinth type is to make the oil gas impact on the partition board or the partition rib for many times so as to condense and recover.

Please refer to fig. 1, which is a schematic structural diagram of a conventional engine air-leakage device, the conventional engine air-leakage device includes: a labyrinth mechanism 80 and a blow-by gas vent pipe 90, the labyrinth mechanism 80 is disposed in the cylinder head chamber below the cylinder head cover 89, the labyrinth mechanism 80 forms a circuitous blow-by gas labyrinth path D through a plurality of notches 801 and a plurality of ribs 802 of the labyrinth mechanism 80, the blow-by gas labyrinth path D has a labyrinth path inlet D1 and a labyrinth path outlet D2. In addition, the blow-by gas vent pipe 90 includes a vent pipe inlet 901 and a vent pipe outlet 902, the vent pipe inlet 901 is communicated with the labyrinth path outlet D2, the vent pipe outlet 902 is communicated with the outside of the engine, and the labyrinth path inlet D1 is communicated with the cylinder head chamber.

The labyrinth mechanism 80 of the conventional engine blow-by device is only in a simple labyrinth shape formed by a plurality of ribs 802 and a plurality of notches 801 in a staggered manner, the path length of the blow-by labyrinth path D is short, the function of the blow-by device cannot be effectively achieved, and the ribs 802 are all of structures with discontinuous segments, so that the rigidity of the whole structure of the cylinder head cover 89 cannot be increased, and the engine blow-by device is not ideal and has room for improvement.

The inventor has thought that in the spirit of the invention, a "engine blow-by device" is needed to solve the above problems, and the present invention is completed after many research experiments.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the engine blows gas leakage device sets up a honeycomb labyrinth mechanism at cylinder head cavity, through the characteristic of this honeycomb labyrinth mechanism, the path length of multiplicable air leakage path of traveling through, and then multiplicable vapor recovery efficiency, and the structure of usable this honeycomb labyrinth mechanism, in order to increase the holistic rigidity of cylinder head lid, reduce cylinder head noise inside, and its overall structure is simple unanimous, but the modularization is used, also can use lighter plastic material, in order to reach whole engine and subtract heavy efficiency.

In order to achieve the above object, the present invention provides an engine air-blowing device disposed on an engine assembly, the engine assembly includes a cylinder, a cylinder head and a cylinder head cover, the cylinder head is disposed on the cylinder, the cylinder head cover is disposed on the cylinder head, a cylinder head cavity is formed therein, the engine air-blowing device includes: a honeycomb labyrinth mechanism and a blow-by vent pipe. The honeycomb labyrinth mechanism is arranged in the cylinder head cavity, and a roundabout air-blowing labyrinth path is formed by a plurality of honeycomb notches and a plurality of rib parts of the honeycomb labyrinth mechanism and is provided with a labyrinth path inlet and a labyrinth path outlet; two ends of the blow-by gas vent pipe are respectively communicated with the labyrinth path outlet and the outside of the engine assembly, and the labyrinth path inlet is communicated with the cylinder head chamber.

The honeycomb labyrinth mechanism can be an integrated structure, can be an integrally formed single-piece structure, and can also be a multi-piece structure which is combined into a single-piece structure.

The honeycomb labyrinth mechanism is made of plastic material, metal material or other equivalent materials.

The foregoing summary, as well as the following detailed description, is exemplary in nature and is intended to further illustrate the scope of the present invention. Other objects and advantages of the present invention will become apparent from the following description and drawings.

Drawings

Fig. 1 is a schematic structural diagram of a conventional engine blow-by gas device.

FIG. 2 is a schematic diagram of an engine assembly according to a preferred embodiment of the present invention.

Fig. 3 is a schematic structural diagram of an engine blow-by device according to a preferred embodiment of the present invention.

Description of the main element symbols:

10 engine assembly 101 right crankcase

102 left crankcase 103 crankshaft assembly

104 crankcase cover 105 cylinder

106 cylinder head 107 camshaft assembly

108 partition plate 109 cylinder head cover

Honeycomb labyrinth mechanism for 110 cylinder head chamber 20

201 honeycomb notch 202 rib

Snorkel inlet of 30-blow-by snorkel 301

302 vent pipe outlet 35 buffer

80 labyrinth mechanism 801 notch

802 rib 89 cylinder head cover

90 blow-by gas leakage vent pipe 901 vent pipe inlet

902 breather pipe outlet D blow-by labyrinth path

D1 labyrinth path inlet D2 labyrinth path outlet

F blow-by gas labyrinth path F1 labyrinth path inlet

F2 labyrinth path outlet

Detailed Description

Please refer to fig. 2 and fig. 3, which are a schematic diagram of an engine assembly and a schematic diagram of an engine air-leakage device according to a preferred embodiment of the present invention. The engine blow-by gas device of the present embodiment is disposed on an engine assembly 10, the engine assembly 10 includes a right crankcase 101, a left crankcase 102, a crankshaft assembly 103, a crankcase cover 104, a cylinder 105, a cylinder head 106, a camshaft assembly 107, a partition 108, and a cylinder head cover 109, the cylinder head 106 is disposed on the cylinder 105, the cylinder head cover 109 is disposed on the cylinder head 105, and a cylinder head chamber 110 is formed therein.

The engine blow-by gas device includes: a honeycomb labyrinth mechanism 20 and a blow-by gas vent pipe 30, the honeycomb labyrinth mechanism 20 is disposed in the cylinder head chamber 110. As shown in fig. 3, the honeycomb labyrinth mechanism 20 forms a circuitous blow-by gas labyrinth path F having a labyrinth path inlet F1 and a labyrinth path outlet F2 through the honeycomb notches 201 and the ribs 202 of the honeycomb labyrinth mechanism 20. Additionally, blow-by breather 30 includes a breather inlet 301 and a breather outlet 302, the breather inlet 301 is in communication with the labyrinth path outlet F2, the breather outlet 302 is in communication with the exterior of the engine assembly 10, and the labyrinth path inlet F1 is in communication with the cylinder head chamber 110. In addition, part of the oil gas will enter the buffer area 35 around the blow-by labyrinth path F to form a buffer zone.

In the present embodiment, the honeycomb labyrinth mechanism 20 is an integrated structure, and the honeycomb labyrinth mechanism 20 is made of plastic material.

The engine blow-by gas device of the embodiment can increase the path length of the blow-by gas passing through by the structural characteristics of the honeycomb labyrinth mechanism 20, and further increase the oil gas recovery efficiency, and can increase the overall rigidity of the cylinder head cover 109 by using the structure of the honeycomb labyrinth mechanism 20, reduce the internal noise of the cylinder head 106 during operation, and the whole structure is simple and consistent, can be applied in a modularized manner, and can also use lighter plastic materials, so as to achieve the effect of reducing the weight of the whole engine assembly 10.

The above-described embodiments are merely exemplary for convenience of description, and the scope of the claims of the present invention should not be limited to the above-described embodiments.

Claims (3)

1. The utility model provides an engine blows gas leakage device, sets up on an engine assembly, its characterized in that, this engine assembly is including a cylinder, a cylinder head and a cylinder end lid, and this cylinder head sets up on this cylinder, and this cylinder end lid sets up on this cylinder head, forms a cylinder head cavity in it, and this engine blows gas leakage device includes:

a honeycomb labyrinth mechanism arranged in the cylinder head chamber, forming a circuitous blowing and leaking labyrinth path through a plurality of honeycomb gaps and a plurality of rib parts of the honeycomb labyrinth mechanism, wherein the labyrinth path is provided with a labyrinth path inlet and a labyrinth path outlet; and

and two ends of the blow-by gas vent pipe are respectively communicated with the labyrinth path outlet and the outside of the engine assembly, and the labyrinth path inlet is communicated with the cylinder head cavity.

2. The engine blow-by gas device of claim 1, wherein the honeycomb labyrinth mechanism is a one-piece structure.

3. The engine blow-by gas device of claim 1, wherein the honeycomb labyrinth mechanism is a plastic structure.

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