CN2435560Y

CN2435560Y - Energy-saving piston-connecting-rod mechanism

Info

Publication number: CN2435560Y
Application number: CN 99245482
Authority: CN
Inventors: 王元庆
Original assignee: Huazhong University of Science and Technology
Current assignee: Huazhong University of Science and Technology
Priority date: 1999-12-03
Filing date: 1999-12-03
Publication date: 2001-06-20
Anticipated expiration: 2009-12-03

Abstract

The utility model relates to an energy-saving piston-connecting-rod mechanism, composed of a driving connecting rod, a swing connecting rod and a driven connecting rod. The end part of the driving connecting rod is combined with a piston, and the other end of the driving connecting rod is hinged with one end of the swing connecting rod. The inflection point of the swing connecting rod is hinged with the driving connecting rod, the other end of the swing connecting rod is connected to a swing fulcrum Q on a machine body, and the other end of the driving connecting rod is connected with a crank. With the utility model, the power of a combustion engine can be increased by 20%-40%, the fuel consumption is decreased by 5%-20%, and exhaust contaminant is obviously reduced; the discharge capacity of a piston compressor is increased by 5%-20%, the rise speed of the pressure of a gas storage tank is accelerated, and the energy consumption is obviously reduced.

Description

Piston-the linkage mechanism that can save energy

The utility model belongs to internal-combustion engine and piston compressor piston-linkage mechanism field.

From the prior art, the piston-linkage mechanism of internal-combustion engine and piston compressor all is made up of piston and integrated type connecting rod (except the cross head design); And all be positively fixed type piston-linkage mechanism, promptly cylinder centerline is by the rotating center of bent axle.

The purpose of this utility model is for the work cycle of improving internal-combustion engine, make it improve power factor, reduce oil consumption, reduce piston-linkage mechanism that a kind of offset that blowdown designs can save energy.

Constituting of the said piston-linkage mechanism that can save energy of the utility model: whole connecting rod is made up of drive connecting rod 1, swing connecting bar 2 and drive link 3; The end of drive connecting rod 1 combines with piston 4, and an end of its other end and swing connecting bar 2 is hinged (D point), and swing connecting bar 2 is the dihedral bars that are the L type, and its angle λ can be 60 °～120 °.The flex point end L and the drive link 3 of dihedral bar are hinged, and the other end of dihedral bar is the swing fulcrum Q that is connected on the body; The other end R of drive link 3 is connected with crank 5.

Said piston-the linkage mechanism that can save energy of the utility model, the center line of its piston 4 has one appropriate in E (referring to accompanying drawing 1) to the biasing on one side of the opposite direction (from top dead center position) of crankshaft rotating.This biasing apart from E, for different types, physical dimension, different design parameters can be arranged.And length, the coordinate of fulcrum and the offset or dish E of piston 4 center lines etc. between said drive connecting rod 1, swing connecting bar 2 and drive link 3 these three joints connecting rods can have corresponding different optimum values because of concrete type, size.Said offset or dish E can be 0～0.5 times of cylinder diameter.

According to the swing connecting bar 2 of the said piston-linkage mechanism that can save energy of the utility model, the length of its DL section also can be zero; At this moment, 2 of swing connecting bar have become pure fork 6, and the D point overlaps on the L point.

For internal-combustion engine, adopt the utility model piston-linkage mechanism, will produce following effect:

1. under the situation that its cylinder bore and crank radius remain unchanged, can make the traveled distance of piston increase by 5%～20% (referring to accompanying drawing 2), that is, can make the actual displacement of motor increase by 5%～20%;

2. guaranteeing that piston-linkage mechanism has under the prerequisite of good stationarity, can make piston pairing crank angle (reaching about 210 °) when top dead center goes downwards to lower dead center be far longer than piston pairing crank angle (being about 150 °) when lower dead center is up to top dead center.Therefore, to four stroke engine, about comparable original prolongation 16% of the time that its suction stroke and expansion stroke are experienced (corresponding crank angle has increased by 30 °), obviously, this will improve greatly motor the air inlet quality, help fuel abundant burning, make high-pressure gas make the time lengthening of expansion work, expand more abundant.So this patent can make fuel consumption rate reduction by 5%～20%, its exhaust contaminant of motor significantly reduce;

3. under the identical situation of cylinder pressure (indicator diagram) or fuel delivery per cycle, because the utility model piston-linkage mechanism is to the transmission efficiency of the cylinder pressure height than conventional construction, for different types, can make the average output torque of bent axle increase 5%～35%, thereby, improved engine power performance.To vehicular engine, can increase the grade ability of its automobile.

Comprehensive above effect, after internal-combustion engine adopts the utility model patent, under the situation that its cylinder diameter, crank radius, rotating speed and fuel delivery per cycle (in theory) portion remains unchanged, its actual displacement can increase by 5%～20%, the average output torque of bent axle can increase 5%～35%, useful horsepower can increase by 20%～40%, fuel consumption rate can descend 5%～20%, the discharge of harmful gases amount also can significantly reduce.

For piston compressor, if adopt the utility model piston-linkage mechanism, then under the constant situation of its cylinder diameter, crank radius and rotating speed, can make actual displacement increase by 5%～20%, can improve simultaneously the rate of pressure rise in the gas holder, the operating time of shortening compressor, its energy consumption is obviously descended.

Accompanying drawing 1: the piston that can save energy-linkage mechanism sketch;

Accompanying drawing 2: the piston displacement plotted curve of the piston crank mechanism that can save energy.

Given in the accompanying drawing 1 is a kind of piston-linkage mechanism that can save energy, and it is characterized in that whole connecting rod is made up of drive connecting rod 1, swing connecting bar 2 and drive link 3; The end of drive connecting rod 1 combines with piston 4, and an end of its other end and swing connecting bar 2 is hinged, and swing connecting bar 2 is the dihedral bars that are the L type, and the flex point end L and the drive link 3 of dihedral bar are hinged, and the other end of dihedral bar is connected in the swing fulcrum Q on the body; The other end of drive link 3 is connected with crank 5; In addition, said piston-linkage mechanism is from top dead center, on one side the center line of its piston 4 has offset or dish to the opposite direction of crankshaft rotating.

Some Z in the accompanying drawing 1 is piston 4 pin centers; Point O is the rotating center of bent axle; Straight line pole ZD is a drive connecting rod 1; Dihedral bar DLQ is a swing connecting bar 2, wherein the length of DL section can be for zero, promptly, a D overlapped with L and become pure fork; Point Q is the fork fulcrum that is fixed on the body; Straight line pole LR is a drive link 3; Point D and some L are respectively the articulating point of 3 of drive connecting rod 1-swing connecting bar 2-drive link; Straight line OR is a crank; ω is the dextrorotation angular velocity of crank.

Explanation to accompanying drawing 2: when the crank radius of certain motor is 57.5mm, the displacement diagram of the thin curve that figure acceptance of the bid is marked with " sc " piston when adopting pot type piston-linkage mechanism, its maximum displacement is 115.00mm; And the displacement diagram of the bold curve that mark has " st " piston when adopting the said piston of the utility model-linkage mechanism, its maximum displacement can reach 129.69mm, that is and, the traveled distance of piston has increased 12.77%.

Claims

1, a kind of piston-linkage mechanism that can save energy is characterized in that, whole connecting rod is made up of drive connecting rod (1), swing connecting bar (2) and drive link (3); The end of drive connecting rod (1) combines with piston (4), one end of its other end and swing connecting bar (2) is hinged, swing connecting bar (2) is the dihedral bar that is the L type, and the flex point end L of dihedral bar and drive link (3) are hinged, and the other end of dihedral bar is connected in the swing fulcrum Q on the body; The other end of drive link (3) is connected with crank (5); In addition, said piston-linkage mechanism, from top dead center, its piston (4) on one side center line to the opposite direction of crankshaft rotating offset or dish is arranged.

According to the said piston-linkage mechanism of claim 1, it is characterized in that 2, the angle λ of said dihedral bar can be 60 °～120 °.

According to the said piston-linkage mechanism of claim 1, it is characterized in that 3, said offset or dish can be 0～0.5 times of cylinder diameter.