CN206309440U - A kind of valve spring of automobile engine - Google Patents

Abstract

A kind of valve spring of automobile engine, spring ovalize, and spring outwards have a plane, and spring ellipse major axis is 4.26 with short axle ratio：3.62, it is 3.11 that there are the length of a plane and short axle ratio in the oval outside of spring：3.62.The utility model increases spring cross-sectional dimension using deformed spring, reduce spring stress, the requirement to the strength of materials is reduced, the economical of spring is improved, valve bounce can be effectively reduced, ensure the tracing ability of valve, effective decay reduces impact endurance test shock of the valve to spring, and deformed spring surface takes the peening of carburizing and quenching to process, and improves the surface stress of deformed spring, the fatigue strength of spring is improved, is applied in technical field of automobile engine.

Description

A kind of valve spring of automobile engine

Technical field

The utility model is related to a kind of valve spring of automobile engine in technical field of automobile engine.

Background technology

At present, valve spring belongs to the valve actuating mechanism of engine.The function of valve actuating mechanism is according to each gas of engine The need for cylinder working process, inlet and outlet door is periodically opened and closed, fresh combustion mixture is timely entered cylinder, make to give up Gas discharges cylinder in time.Wherein, the effect of valve spring mainly have it is following some：(1) valve self-return is ensured to close and close Envelope.(2) seating force of valve and valve seating is ensured.(3) valve driving parts during opening and closing are absorbed to be produced Raw inertia force, valve actuating mechanism normal work is destroyed to prevent various driving members separated from one another.Because valve spring subjects frequency Numerous alternate load, to ensure that valve spring reliably works, it is desirable to which valve spring must have suitable elastic force, and enough is strong Degree and fatigue resistance.Usual valve spring is made of high-quality hard drawn spring steel wires, so very high to spring material requirement, Econmics comparison is poor.In addition when the working frequency of valve spring is equal with its frequency of natural vibration or into a certain multiple, it will Resonate, cause valve knock-on, impact of taking a seat, and spring fracture can be made.Such as it is unsatisfactory for the broken line of steel wire gap-number of coils It is required that, the phenomenon of the parts such as rocking arm, rocker arm shaft and valve spring breakage due to vibrations can be caused.Therefore a kind of small displacement is researched and developed Turbo-charged direct injection petrol engine is always new problem anxious to be resolved.

The content of the invention

The purpose of this utility model is to provide a kind of valve spring of automobile engine, and the utility model uses deformed spring Increase spring cross-sectional dimension, reduce spring stress, reduce the requirement to the strength of materials, improve economical, the Neng Gouyou of spring The reduction valve bounce of effect, it is ensured that the tracing ability of valve, effective decay reduces impact endurance test shock of the valve to spring, deformed spring Surface takes the peening of carburizing and quenching to process, and improves the surface stress of deformed spring, improves the fatigue strength of spring.

What the purpose of this utility model was realized in：A kind of valve spring of automobile engine, spring ovalize, and bullet There is a plane in spring outside, and spring ellipse major axis is 4.26 with short axle ratio：3.62, there is the length of a plane in the oval outside of spring It is 3.11 with short axle ratio：3.62.

The structure for being characterized by it of the present utility model.Its operation principle is to increase spring sectional area using deformed spring Size, reduces spring stress, reduces the requirement to the strength of materials, improves the economical of spring.The following spring-loads for using Design：During spring heights 44.2mm, P1=267 ± 14N；During spring heights 35.2mm, P2=718 ± 36N；Can effectively reduce Valve bounce, it is ensured that the tracing ability of valve.The broken line requirement of steel wire gap-number of coils is such as unsatisfactory for, rocking arm, rocking arm can be caused The phenomenon of part breakage due to vibrations such as axle and valve spring.Using design of the present utility model, effective decay reduces gas Impact endurance test shock of the door to spring.Deformed spring surface takes the peening of carburizing and quenching to process, and improves the table of deformed spring Face stress, and then improve the fatigue strength of spring.Through overtesting, it was demonstrated that this deformed spring than original design spring in intensity Aspect makes moderate progress.

A kind of valve spring of automobile engine compared with prior art, spring sectional area chi is increased with deformed spring is used It is very little, spring stress is reduced, the requirement to the strength of materials is reduced, the economical of spring is improved, valve bounce can be effectively reduced, Ensure the tracing ability of valve, effective decay reduces impact endurance test shock of the valve to spring, and carburizing and quenching is taken on deformed spring surface Peening treatment, improve deformed spring surface stress, improve spring fatigue strength the advantages of, will be widely used in In technical field of automobile engine.

Brief description of the drawings

Below in conjunction with the accompanying drawings and embodiment is described in detail to the utility model.

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the top view of Fig. 1.

Fig. 3 is the A portions enlarged drawing of Fig. 2.

Fig. 4 is spring heights load chart of the present utility model.

Fig. 5 is the broken line graph of steel wire gap-number of coils of the present utility model.

Specific embodiment

Referring to the drawings, a kind of valve spring of automobile engine, spring ovalize, and spring outwards have a plane, spring Oval major axis is 4.26 with short axle ratio：3.62, it is 3.11 that there are the length of a plane and short axle ratio in the oval outside of spring： 3.62。

Operation principle of the present utility model is entered by compressor air inlet machine mouthful pipe by the air after air filter filtering Enter in booster pressure shell, turbine is rotated and compress the air in pressure shell under the power of exhaust, the air after compression is from calming the anger Machine outlet is finally reached in combustion chamber by entering into inlet manifold by throttle body after charge air cooler cooling, is mixed with gasoline After-combustion is done manual work, and the waste gas after burning is reached supercharger volute and promotes turbine rotation and then be discharged in vitro by blast pipe.Combustion Oil enters high pressure oil rail and sprays into cylinder by high-pressure oil pump pump oil to high-pressure oil pipe.Miniaturization：Using high intensity aluminium pressure Casting cylinder body, configures the cylinder cap of small valve angle, and direct drive valve-driving system, none-disk terminal cooling system, cylinder cap collection is in a row Gas manifold.Resin-made inlet manifold, resin-made rocker arm chamber cover lid, the Jing Yin chain actuated by cams of timing, highly integrated type aluminum chain engineer room Shell, the integrated oil cooled system of cylinder body.High performance objectives：Dual Over Head Camshaft, center OCV, inlet and outlet continuous variable formula valve Timing, performance boost.Brand-new vortex Combustion chamber design.High-efficiency small-sizedization inlet manifold, the supercharging of novel small-sized high-efficiency turbine Device, electric actuator quickly controls waste gate.Low burn takes target：Using continuously variable displacement lubricating oil pump, energy-efficient electronics section Warm device, the main motion system of low friction, low-tension piston ring, low friction crankshaft oil seal, the cup type tappet of low friction DLC coatings is shallow Die bed water jacket etc..Crankshaft center biases 6mm with cylinder axis, can effectively reduce friction loss, reduce oil consumption, reduces noise.Adopt The generator taken turns with elastic belt and with OAD, can effectively reduce belt tension, reduce oil consumption.

Through overtesting, it was demonstrated that this deformed spring makes moderate progress than the spring of original design in terms of intensity, specifically see the table below：

Claims (1)

1. a kind of valve spring of automobile engine, it is characterised in that：Spring ovalize, and spring outwards have a plane, spring Oval major axis is 4.26 with short axle ratio：3.62, it is 3.11 that there are the length of a plane and short axle ratio in the oval outside of spring： 3.62。