CN200940630Y

CN200940630Y - Variable force direction crank shaft

Info

Publication number: CN200940630Y
Application number: CN 200620051346
Authority: CN
Inventors: 陈态然; 谭红彪
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-06-13
Filing date: 2006-06-13
Publication date: 2007-08-29
Anticipated expiration: 2016-06-13

Abstract

A crankshaft for changing force direction is mainly to solve the technology issue that the existing piston type engine consumes a large amount of energy at dead point position. One side of the crank between the main shaft and the crankshaft is provided with a section. The section partly passes over the connecting line of the center point of the main shaft and the crankshaft, and makes the force transferred from the piston produce lever effect and form a rotary moment which can decrease dead point angle of the crankshaft. The utility model is mainly suitable for various piston type engines.

Description

Crankshaft capable of changing force direction

Technical field

The utility model relates to a kind of linkage type crankshaft capable of changing force direction, and especially its dead point angle is very little.

Background technique

At present, reciprocating engine generally is used for internal-combustion engine, its straight line motion is converted into circular movement, and almost none is not to adopt crankshaft structure, but it is that two dead points are arranged that crankshaft structure has a very big problem: piston head is called dead point, nearest position lower dead centre in position farthest, crankshaft rotating center, the distance from the upper dead center to the lower dead centre is stroke of piston.In theory, the dead center position has only two, but in the reality, processing or wearing and tearing all can make piston, cylinder etc. produce error, simultaneously, the thrust that fuel combustion gives piston is a finite value, and so, the dead center position just expands to a zone, claim this zone to be " dead point angle ", existing reciprocating engine need be crossed the dead point angle with the flywheel store kinetic energy, and multicylinder engine needs other cylinders to do work to cross the dead point angle, and the process need of crossing the dead point angle consumes lot of energy.Existing design is adopted the method for post ignition for fear of in the dead center position igniting, though obtain certain effect, fuel and oxygen is lighted a fire when desirable compression ratio, and combustion efficiency always has been subjected to bigger restriction.

Summary of the invention

The purpose of this utility model provides a kind of crankshaft capable of changing force direction.

The technological scheme that its technical problem that solves the utility model adopts is:

There is section on one side of crank between main shaft and the bent axle, and section is partly crossed the line of main shaft and crankshaft center point, and the active force that makes piston be delivered to crank produces leverage, forms running torque, reduces the dead point angle of bent axle.

When piston was in upper dead center position, piston moved downward, and its force direction points to alignment of shafts point.As long as the utility model moves downward very little displacement, the zone, dead point that is produced in the situation that can lose contact with reality.When the force transmission of piston arrives main shaft, produce moment because between bent axle and the main shaft section is arranged, reduce resistance, improve the efficient that straight line motion is converted into circular movement.

The beneficial effects of the utility model are: as long as bent axle at the place, dead point micro displacement takes place, owing between main shaft and the bent axle section is arranged, cause the main shaft can not be to the rectilinear direction active force of main shaft with the form of straight lines transmission to bent axle or bent axle, thereby generation leverage, form bigger running torque, reduce the scope and the amplitude of dead point angle greatly, reduce resistance, improve the efficient that straight line motion is converted into circular movement, overcome the drawback that need consume lot of energy when pot type piston formula motor turns round in dead point angle zone.Reduced the consumption that the dead point angle has promptly reduced energy, fuel saving prolongs working life of internal-combustion piston engine, reduces operating cost.

The stroke in angle zone, dead point is called backlash, and this backlash is long more, and the idle work of consumption is big more, otherwise the idle work of consumption is few more.The inventor draws as next group data by test:

The diesel engine model	Piston stroke (mm)	Backlash (mm) before improving	Improve back backlash (mm)
The diesel engine model	Piston stroke (mm)	Backlash (mm) before improving	Improve back backlash (mm)	195 types	115	11	3.5
175 types	70	4.5	1.5	195 types	115	11	3.5

Description of drawings

Fig. 1 is the principle schematic of piston when walking to upper dead center position.

Fig. 2 is the principle schematic of piston when walking to the dead point with external position.

Fig. 3 is the principle schematic of piston when walking to lower dead point position.

Fig. 4 is one of bent axle section embodiment's a schematic representation.

1. sections among the figure, 2. main shaft, 3. bent axle, 4. connecting rod, 5. piston, 6. cylinder sleeve, 7. crank.

Embodiment

Mode of execution 1: by Fig. 1 to Fig. 3, the utility model crank material is than common crank material requirements height, and section 1 is a narrow slit, and the line of main shaft and crankshaft center point is crossed in this slit, and bent axle can use through dynamic balance running and after reaching dynamic balancing.

As Fig. 1, top-down power F is through behind the bent axle 3, owing on the crank 7 section 1 is arranged, power F will change direction, form the direction of transfer that is marked as shown in Figure 1, form clockwise running torque, thereby reduce the dead point angle of bent axle greatly.In like manner, as shown in Figure 3, the F1 opposite with F power also can form clockwise moment of rotation after being delivered to crank 7 from piston 5.If section is opened the another side at crank, the moment of rotation of Xing Chenging will be counterclockwise so.

Mode of execution 2: the embodiment of section 1 has linear, rectangle, " U " shape, " V " shape, circular arc etc. respectively, principle is: as long as section is partly crossed the line of main shaft and crankshaft center point, the power that piston is passed over produces leverage, form moment of rotation, require bent axle can reach dynamic balancing, reach the desired intensity of running simultaneously, in normal working life, do not rupture, so the utility model is not got rid of the section of other complicated shapes.

Mode of execution 3: the preferred version of section is the edge of crossing main shaft and crankshaft center point line arrival main shaft, as shown in Figure 4.All the other are with mode of execution 1.

Claims

1, a kind of crankshaft capable of changing force direction is characterized in that: one side the crank between main shaft and the bent axle has a section, section is crossed the line of main shaft and crankshaft center point, and the power that makes piston be delivered to crank produces leverage, forms running torque, reduces the dead point angle of bent axle.

2, crankshaft capable of changing force direction according to claim 1 is characterized in that: section is crossed the edge of main shaft and crankshaft center point line arrival main shaft.