CN212563472U

CN212563472U - Engine capable of enhancing gas flow

Info

Publication number: CN212563472U
Application number: CN202021071590.4U
Authority: CN
Inventors: 王长江; 阎全忠; 王剑; 王世强
Original assignee: Hanteng New Energy Automobile Technology Co ltd
Current assignee: Hanteng New Energy Automobile Technology Co ltd
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2021-02-19
Anticipated expiration: 2030-06-11

Abstract

The utility model provides a can strengthen gas flow's engine, including intake duct, admission valve and piston, the intake duct sets up on the cylinder head, admission valve movable mounting just can make on the cylinder head intake duct and combustion chamber intercommunication or close, piston movable mounting is in the combustion chamber it is protruding to be provided with the screw-tupe on the inner wall of intake duct, the valve face of admission valve sets up to including twice bulge loop and twice concave ring, the concave ring sets up and the circular arc transition alternately with the bulge loop the top surface array of piston has the arch that a plurality of closely arranged. The utility model discloses a mutually supporting design of intake duct, admission valve, piston just so can realize the infiltration of vortex, tumble, crowded flow and torrent in admitting air and the combustion process to can improve combustion efficiency and engine performance by at utmost.

Description

Engine capable of enhancing gas flow

Technical Field

The utility model belongs to the technical field of the engine, specifically relate to a can strengthen gaseous mobile engine.

Background

The air movement in the engine cylinder has a decisive influence on the mixture formation and the combustion process, whereas the air movement in the cylinder is usually influenced by the structure of the intake duct, the intake valve, the cylinder head top and the piston top.

In the specification of japanese utility model patent CN 201680007804.1, which is directed to china, there is disclosed an intake port structure of an engine, the intake port being provided with an intake port connected to a combustion chamber of the engine; and an annular seat ring provided in a region of the intake port facing the combustion chamber, wherein, in an inner surface of the intake port continuous to an upstream side of the inner surface of the seat ring as viewed in a plan view from the combustion chamber side in a direction of an axial center of the seat ring, an inner surface matching portion located on the same plane as the inner surface of the seat ring is provided on a rear end side away from the axial center of the cylinder bore, and a protruding portion protruding inward with respect to the inner surface of the seat ring is provided on any other portion, and a cross-sectional area of a flow path at a portion where the protruding portion is located is made smaller than a cross-sectional area of the flow path of the seat ring.

The utility model discloses a diesel engine admission valve of vortex is admitted in reinforcing is disclosed in chinese utility model patent CN 20191039388.4's specification, this admission valve includes valve rod, valve face, set up valve rod guide vane on the valve rod, set up valve face guide vane on the valve face, valve rod guide vane and the laminating of valve rod surface curved surface tangential, valve face guide vane and the laminating of valve face surface curved surface tangential, valve rod guide vane follows the valve rod vertical downwards and have torsion angle, valve face guide vane has the radian, valve rod guide vane and valve face guide vane rigid connection.

However, the prior art only considers improving the intake air flow pattern from a certain aspect to enhance the intake swirl or tumble ratio, and does not consider fully playing the coordination effect of the intake passage, the intake valve and the piston on the improvement of the intake air flow pattern during the engine intake process to further enhance the air flow.

SUMMERY OF THE UTILITY MODEL

To the above prior art, the to-be-solved technical problem of the present invention is to provide an engine capable of enhancing gas flow.

For solving the technical problem, the utility model provides a can strengthen gas flow's engine, including intake duct, admission valve and piston, the intake duct sets up on the cylinder head, admission valve movable mounting just can make on the cylinder head intake duct and combustion chamber intercommunication or close, piston movable mounting is in the combustion chamber it is protruding to be provided with the screw-tupe on the inner wall of intake duct, the valve face of admission valve sets up to including twice bulge loop and twice concave ring, concave ring sets up and the circular arc transition alternately with the bulge loop the top surface array of piston has the arch of a plurality of closely arranging.

Preferably, the height of the spiral protrusion is set to 1/3 of the inner diameter of the air inlet, and the pitch of the spiral protrusion is set to 2 times of the inner diameter of the air inlet.

Preferably, the axial heights of the concave ring and the convex ring are set to be 1/4 of the axial height of the valve face, and the maximum radial thickness of the convex ring is set to be 1/10 of the inner diameter of the air inlet channel.

Preferably, the protrusions on the top surface of the piston are pyramid-shaped protrusions.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the spiral type bulge is arranged in the air inlet channel, so that the air inlet flow can form axial rotating air flow with certain strength in the air inlet channel, namely air inlet vortex.

2. The valve surface of the air inlet valve is arranged to comprise two convex rings and two concave rings, and the concave rings and the convex rings are arranged alternately and are in arc transition, so that the air inlet flow can form radial rotating air flow with certain strength at the air inlet valve, namely air inlet tumble and can be matched with the air inlet swirl to form a tumble; meanwhile, when the piston is close to the top dead center, the large-scale rolling vortex can be broken into a plurality of small-scale vortexes, namely strong turbulent motion is formed, so that the turbulent intensity and turbulent kinetic energy can be further increased through the matching design of the air inlet channel and the air inlet valve, the flame propagation speed can be greatly increased, the combustion efficiency of mixed gas is improved, and the performance of an engine is improved.

3. The plurality of pyramid-shaped protrusions which are closely arranged are arranged on the top surface of the piston in an array mode, so that intake air flow can reflect and collide with each other to form chaotic air flow which rotates and flows disorderly, and stronger flow squeezing motion can be formed at the later stage of a compression stroke, so that the turbulence intensity in a combustion chamber can be further enhanced, and the rapid combustion of mixed gas is promoted; meanwhile, through the mutually matched design of the air inlet passage, the air inlet valve and the piston, the mutual permeation of vortex, tumble, extrusion flow and turbulence can be realized in the air inlet and combustion processes, so that the combustion efficiency and the engine performance can be improved to the maximum extent.

Drawings

Fig. 1 is a schematic structural diagram of an intake valve of an engine capable of enhancing gas flow according to the present invention.

Fig. 2 is a schematic structural view of a pyramid-shaped protrusion on the top surface of a piston in an engine capable of enhancing gas flow according to the present invention.

Illustration of the drawings: 11-valve stem, 12-valve face, 121-convex ring, 122-concave ring, 13-valve seat and 2-pyramid-shaped protrusion.

Detailed Description

The invention will be further described with reference to the drawings and preferred embodiments.

The utility model also provides a can strengthen the engine that gas flows, including intake duct, admission valve and piston. The air inlet channel is arranged at the top of the cylinder cover, a spiral protrusion is arranged on the inner wall of the air inlet channel, the height of the spiral protrusion is 1/3 of the inner diameter of the air inlet channel, and the screw pitch of the spiral protrusion is 2 times of the inner diameter of the air inlet channel; the intake valve is movably mounted on a cylinder head through a cam shaft, a valve spring and other valve mechanisms, and can enable an intake passage to be communicated with or closed off an engine combustion chamber through opening or closing the intake port of the intake valve, the intake valve comprises a valve rod 11, a valve face 12 and a valve seat 13 (shown in figure 1), wherein the valve face 12 of the intake valve is set to comprise two convex rings 121 and two concave rings 122, the concave rings 122 and the convex rings 121 are arranged alternately and have smooth circular arc transition, the axial heights of the concave rings 122 and the convex rings 121 are both set to be 1/4 of the axial height of the valve face 12, and the maximum radial thickness of the convex rings 121 is set to be 1/10 of the inner diameter of the intake passage; the piston is movably arranged in a combustion chamber of an engine through a crankshaft connecting rod mechanism and can do linear reciprocating motion in the combustion chamber, a plurality of pyramid-shaped protrusions 2 (shown in figure 2) which are closely arranged are arrayed on the top surface of the piston, the side length of a square on the bottom surface of each pyramid-shaped protrusion 2 is designed to be 2 mm, the height of each pyramid-shaped protrusion 2 is designed to be 1 mm, and the distance from the edge of each pyramid-shaped protrusion 2 to the cylinder wall is 5 mm.

The utility model arranges the spiral bulge in the air inlet channel, so that the air inlet flow forms axial rotating air flow with certain intensity in the air inlet channel, namely air inlet vortex; then, the valve surface of the air inlet valve is arranged to comprise two convex rings and two concave rings, and the concave rings and the convex rings are arranged alternately and are in arc transition, so that the air inlet airflow can form radial rotating airflow with certain intensity at the air inlet valve, namely air inlet tumble, and the air inlet vortex from the air inlet channel can form a tumble vortex at the air inlet valve; finally, the plurality of pyramid-shaped protrusions which are closely arranged are arranged on the top surface of the piston in an array mode, so that intake air flow can be mutually reflected and collided to form chaotic air flow which rotates and flows disorderly, and stronger flow squeezing motion can be formed at the later stage of a compression stroke, so that the turbulence intensity in a combustion chamber can be further enhanced, and the rapid combustion of mixed air is promoted. The utility model discloses a cooperation design of intake duct, admission valve, piston not only can realize the infiltration of vortex, tumble, crowded flow and torrent in admitting air and the combustion process, can improve combustion efficiency and engine performance moreover furthest.

The foregoing merely illustrates preferred embodiments of the present invention, which are described in considerable detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes, modifications and substitutions can be made, which are all within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a can strengthen engine that gas flows, includes intake duct, admission valve and piston, the intake duct sets up on the cylinder head, admission valve movable mounting just can make on the cylinder head the intake duct communicates or closes with the combustion chamber, piston movable mounting is in the combustion chamber, its characterized in that: be provided with the screw-tupe arch on the inner wall of intake duct, the valve face of admission valve sets up to including twice bulge loop and twice concave ring, concave ring sets up and the circular arc transition alternately with the bulge loop the top surface array of piston has the arch of a plurality of range closely.

2. An engine for enhancing gas flow as claimed in claim 1, wherein: the bellied height of screw type sets up to 1/3 of intake duct internal diameter, the bellied pitch of screw type sets up to 2 times of intake duct internal diameter.

3. An engine for enhancing gas flow as claimed in claim 1, wherein: the axial height of concave ring and bulge loop all sets up to valve face axial height 1/4, the biggest radial thickness of bulge loop sets up to the 1/10 of intake duct internal diameter.

4. An engine for enhancing gas flow as claimed in claim 1, wherein: the protrusions on the top surface of the piston are pyramid-shaped protrusions.