CN101301847A

CN101301847A - Vehicle combined damping system

Info

Publication number: CN101301847A
Application number: CNA2008100395392A
Authority: CN
Inventors: 江绍成
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-06-26
Filing date: 2008-06-26
Publication date: 2008-11-12

Abstract

The invention relates to a combined damping system of a vehicle. The existing four shock absorbers independently acting and taking a fluid (liquor or gas) as a medium on the vehicle are combined into two groups by a solenoid pilot actuated valve according to diagonal positions to form the damping system. The system can change working state according to road surface situation and the running working situation of the vehicle measured by a relevant sensor on the vehicle or relevant commands sent out by an vehicle electric control system to so as to integrally and effectively reduce various shocks of the vehicle during the running process, thus achieving the aim of improving vehicle security and comfort.

Description

Vehicle combined damping system

One, technical field:

Vehicle combined damping system of the present invention relates to the shock absorption device of various vehicles such as automobile, in order to improve vehicle damping, safety performance and to improve occupant's traveling comfort.Belong to mechanical design field.

Two, background technology:

As everyone knows, the bumper on the vehicle is the indispensable device of damping and safety in the vehicle ', and common have polytypes such as spring, liquids and gases.Along with science and technology development, making rapid progress of automotive technology especially, the various novel damping devices that are used on the automobile constantly come out, have on the structure to hang or non-underslung, medium have liquid or gas etc.They have four usually, are placed in the top of wheel separately respectively, and they bear vibrations on this orientation and performance damping, buffering function in the vehicle ' independently of one another.In recent years the electronic control type that occurs in high-end vehicle is hydraulic pressure (air) suspension initiatively, though it is combined as system by computing machine with bumper, and has improved the damping performance of vehicle widely.But independently hydraulic power or pneumatic supply need be set, and not only system is complicated, and high the making of cost is difficult to popularize in the recent period, and the source of will consuming energy more.

Three, summary of the invention:

Vehicle combined damping system of the present invention, its purpose just provides a kind of mentality of designing, four fluids (liquid or gas) that act on separately on the present vehicle are combined into two groups for the bumper of medium, constitute a shock mitigation system, integral body is slowed down vehicle various vibrations under steam effectively, to reach the purpose that improves vehicle safety and traveling comfort.

The present invention is that fork-like farm tool used in ancient China is realized by the following technical programs: four bumpers settling on four jiaos on the vehicle are called afters right front (RF), left front (LF), right back (RB) and left back (LB) respectively, is combined into two groups respectively (RF and LB are one group being in two bumpers on the diagonal line orientation; LF and RB are another group), by two two-position four-way solenoid valves (1DT and 2DT) upper and lower cavity of on the same group two bumper cylinder bodies has been connected fork-like farm tool used in ancient China, when 1DT, 2DT are not charged, the epicoele of two bumper cylinder bodies of this group and cavity of resorption intercommunication respectively (promptly parallel communicating); As 1DT, when 2DT is charged, two bumpers of this group become the intersection intercommunication of the upper and lower chamber of cylinder body because of electromagnetic valve commutates, thereby have two kinds of mode of operations after making this group bumper combination.Whether 1DT and 2DT switch on, and depend on the vehicle to record the operating mode of condition of road surface and vehicle ' or the relevant instruction that vehicle electrically controlling system sends about sensor.

Vehicle combined damping system of the present invention, simple in structure, with low cost, can bring into play the allomeric function of combined damping system effectively, improve the safety and the traveling comfort of vehicle operating; Be suitable for the bumper of different medium (liquid or gas), can be used for simple car control system, also can with automatically controlled active suspension coupling, applicability is wider.

Four, description of drawings:

Fig. 1 is the principle of work of vehicle combined damping system of the present invention, RF, LF, RB and LB are the bumpers that lays respectively at four jiaos on vehicle on it, check valve wherein and flow regulating valve are the original devices in the liquid damper, with convection cell damping realization damping repeatedly, vibration energy is converted to the heat energy of fluid.

Five, specific embodiments:

Below in conjunction with accompanying drawing 1, be example with the most frequently used liquid damper, the technical program is described further:

The damping process of this system is, when the vehicle of straight-line travelling causes vibrations because of Uneven road, this moment 1DT and the equal no power of 2DT, each cylinder body upper and lower cavity of organizing two bumpers in the bumper communicates by electromagnetic valve is parallel, if the prominent bump of meeting of off front wheel, lift on the RF anti-shock fluid cylinder body, the car body right front portion is because of lifting on the inertia lag, bumper cylinder body cavity of resorption oil pressure raises, this moment this chamber oil except that by this bumper inner passage repeatedly damping carry out transformation of energy to realize the shock-absorbing function, also be passed to the cylinder body cavity of resorption of the LB bumper on the diagonal angle by 2DT electromagnetic valve branch, under reducing car body ascendant trend and RF bumper, make cavity pressure rising under the LB bumper in the cavity pressure again, strengthen the anti-ability of falling of the left back portion of car body.Like this, two bumper combined actions of RF after the combination and LB are that car body right front ascensional range is reduced, and reduce the fall of car body left back; Meet pothole when off front wheel is prominent, this place's car body sinks because of inertia lag, RF bumper cylinder body moves down, the cylinder body upper cavity pressure raises, this moment this chamber oil except that by this bumper inner passage repeatedly damping carry out transformation of energy to realize the shock-absorbing function, also be passed to the cylinder body epicoele of the LB bumper on the diagonal angle, LB bumper upper cavity pressure is raise, strengthen the anti-ability of liter of the left back portion of car body by 2DT electromagnetic valve branch.Like this, two bumper combined actions of RF after the combination and LB are that sinking amplitude in car body right front is reduced, and reduce the ascensional range of car body left back.Obviously, under these two kinds of road conditions, the bumper after the combination helps to keep car body steady when dashing forward the chance Uneven road to a certain extent.In like manner, four bumpers respectively or part when running into above-mentioned road conditions simultaneously, all can be corresponding the combination function of performance system, reduce the amplitude that jolts because of car body that Uneven road causes.

When vehicle travels on bend or because of quickening (or braking) caused force of inertia, when causing the vibrations of car body wigwag motion or swing, this moment, vibrations were caused by the inertia of top car body quality, it is different with the focus of bottom Uneven road, this can utilize the sensor of the angle position of bearing circle and vehicle acceleration to be discerned and distinguish it, in addition, the characteristics of this kind vibrations be homonymy not on the same group bumper almost be subjected to the similar application force of fork-like farm tool used in ancient China simultaneously from the top car body, under the instruction of relevant sensor, this moment 1DT, 2DT energising, the cylinder body upper and lower cavity of two groups of bumpers intersect respectively and communicate.Not on the same group the action of bumper of homonymy then can cause the action of the corresponding bumper of opposite side.For example, when the vehicle turnon left, two bumpers in right side are subjected to the pressure of car body inclination because of centnifugal force, this side shock absorber piston moves down and the cavity of resorption oil pressure is raise, this place's pressure oil leads to the left side epicoele of bumper on the same group by the intersection oil circuit after commutating, the car body left side is had a declining tendency, and obviously, this will reduce the amplitude of vehicle Right deviation.In like manner, vehicle is because of acceleration or glancing impact, and the combination of front side and four bumpers of rear side also can be brought into play the shock-absorbing function of group system, to reduce the amplitude that vehicle leans forward or swings back.

In sum, vehicle combined damping system of the present invention can reduce the amplitude because of all kinds of vibrations of bottom road conditions and the caused car body of top force of inertia, improves the safety of vehicle ' and occupant's traveling comfort effectively.

The centre of body weight of occupant in the carbody seat interior with being fixed on car body is relative variable, and when turn inside diameter or acceleration, deceleration, the sense of discomfort that right rolling or swing are shaken in a left side still can take place the occupant.For further improving occupant's traveling comfort, (the patent No.: 200410089149.8) proposed enforceable technical scheme in the patent of anti-swing self-stabilization type chair seat.These two invention Joint Implementations can solve the vibrations of carbody better and improve occupant's traveling comfort.

Handle the instruction of 1DT and 2DT, the condition of road surface that can be recorded by the relevant sensor in the vehicle ', the operating mode fork-like farm tool used in ancient China of vehicle ' send, also can take from the relevant instruction of vehicle electrically controlling system (as ESP or automatically controlled bus), make this combined damping system bring into play whole shock-absorbing function better.

It must be noted that, system by single bumper combination, should be on the basis of test group system indicator diagram, the parameter of structure design of each bumper is wherein made corresponding changes, could under various vibrations operating modes, obtain the damping effect of being satisfied with at the combined damping system that guarantees vehicle.

Claims

1, vehicle combined damping system of the present invention, it is characterized in that with four jiaos of four of settling on the former vehicle separately effect be the bumper of medium with the fluid, be combined into two groups respectively (RF and LB be one group being in two bumpers on the diagonal line orientation; LF and RB are another group), by two two-position four-way solenoid valves (1DT and 2DT) upper and lower cavity of the oil cylinder of on the same group two bumpers has been connected fork-like farm tool used in ancient China, when 1DT, 2DT are not charged, the oil cylinder epicoele of two bumpers of this group and cavity of resorption intercommunication respectively (promptly parallel communicating); As 1DT, when 2DT is charged, two bumpers of this group become the upper and lower chamber intersection intercommunication of oil cylinder because of electromagnetic valve commutates, thereby have two kinds of mode of operations after making this group bumper combination.

2, according to the described vehicle combined damping system of claim 1, it is characterized in that: whether 1DT and 2DT switch on, and depend on the vehicle to record the operating mode of condition of road surface and vehicle ' or the relevant instruction that vehicle electrically controlling system sends about sensor.