Upper strut mounts of strut assembly of front suspension, series ComfortPro А170.2902.821

Upper strut mounts of strut assembly of front suspension for LADA Priora family

Upper strut mounts of strut assembly of front suspension is designed for use in the front suspension of LADA Priora 2170, 2171, 2172 and its modifications.

The strut mount serves to transmit axial, radial and other forces to the body and moments transmitted by the guide device suspension, damping force and elastic forces of coil springs and compression buffer.

Strut mount consists of 4 main elements (Fig. 1):

• strut mount (1),
• annular hearing (2),
• limiter of rebound (3),
• compression motion limiter (7).

Fig. 1. Scheme of strut mount ASOMI^TM in section for LADA Priora.

Strut mount (1) consists of an outer case (4) with mounting bolts (5), the inner bushing (8) and bearing support (6), connected with rubber by vulcanization.

Annular hearing is a hermetic construction with durable lubricating stuff. It has a press fit on the bearing support (6).

Limiters of rebound (3) and compression motion (7) is intended to limit the forces generated by the movement of the wheels, and helps to absorb the energy of the released coil springs at the end of rebound and compression when driving over roughnesses of road. Installation of support without limiters can cause premature failure and leads to the loss of the possibility of a replacement under warranty.

The main differences and advantages of strut mounts ASOMI^TM are:

1.    Displacement of the axis of mounting bolts ASOMI^TM

Strut mounts ASOMITM made with displacement of the axis of mounting bolts relative to the bushing axis (the axis of the strut rod). This revision allowed the use of a strut mount for different models of  suspension for Lada Kalina and Lada Priora, and increase its service life by several times!

The only difference between the strut mounts ASOMI^TM for cars Lada Kalina and Lada Priora - it is their equipment.

2.    Increased rigidity of the strut mount housing ASOMI^TM

Specialists of "ASOMI" have changed and modified housing of serial strut mounts having insufficient rigidity in the axial direction. Maximally rigid case of strut mounts ASOMI^TM for vehicles Lada Kalina and Lada Priora has no analogues!

Increasing of the rigidity of strut mounts housing ASOMI^TM allowed:

• Completely eliminate body deformation and squeezing of car cups
• To improve the characteristics of stability and controllability of the car,
• To increase at times strut mounts’ resource

3.    Two damping work areas of the strut mount ASOMI^TM

An important feature of strut mounts ASOMI^TM ace for vehicles Lada Kalina and Lada Priora is the original design of the rubber element of strut mount, vulcanized to the inner and outer surface of the strut mount housing and performed in different parts of the rubber compound with different Shore hardness (Fig. 2).

Fig. 2. Damping work areas of the strut mount ASOMI^TM

First section is a zone of bearing support, where the spring force is transmitted, has a more hard rubber.

The second section is a zone of vulcanization of the inner sleeve, on which the effort of the shock absorber is transmitted, has a more soft rubber.

This engineering solution in strut mounts ASOMI^TM for cars Lada Kalina and Lada Priora improves vibration isolation of the car, reduces the overall noise level to 4 dB, provides smooth damping effect (absorption) of the vibration by the upper strut mount of strut assembly of front suspension (in contrast to the production of strut mounts that have insufficient vibration damping properties). At the same time rod displacement is limited and a progressive characteristic of the upper strut mount is formed, which increases its power consumption.

In addition, due to the ring-shaped webbing of the strut mount ASOMI^TM and deepened bearing part (6), the reliability of the connection of the elastic insert to the body  increases what consequently increases the lifetime of the strut mount ASOMI^TM ace several times (Fig. 3).
 

Fig. 3. Structure of the upper strut mounts of strut assembly of front suspension ASOMI^TM for LADA Kalina and LADA Priora.

A)    general view
B)    section
1.    Strut mount
2.    Outer case
3.    Mounting bolts
4.    Bering support
5.    Inner sleeve
6.    Rubber component

4.    The ideal ratio of axial and radial rigidity (400/1500 N / mm) of the strut mount ASOMI^TM

Strut mounts ASOMI^TM for cars Lada Kalina and Lada Priora have an ideal balance of axial and radial features 1500 N / mm and 400 N / mm, respectively (Fig. 4 and Fig. 5). Due to this, strut mount ASOMI^TM has a very long service life and optimum performance for noise and vibration control and driving properties. When developing strut mounts, specialists of "ASOMI” followed the recommendations of the company WOCO, a world leader in the development and production of rubber products for cars.

Fig. 4. Elastic axial characteristic of the strut mount ASOMI^TM for cars Lada Kalina and Lada Priora. 

Fig. 5. Elastic radial characteristic of the strut mount ASOMI^TM for cars Lada Kalina and Lada Priora.

5.    The original improved design of limiters of rebound and compression motion.

Specialists of "ASOMI" developed and applied in the strut mounts ASOMI^TM for cars Lada Kalina and Lada Priora improved limiters of the rebound and compression with optimized design. Poppet type limiters fitted with the peripheral ring flat side, against which the upper ring elastic member of the elastic strut mount insertion set (Fig. 6).

The technical result of the use of these limiters of the rebound and compression is an improve in the vibration-damping properties of the strut mount ASOMI^TM, increase in the resource of work and the smoothness of a course.

Fig. 6. Profile of the strut mount ASOMI^TM for cars Lada Kalina and Lada Priora.

The reason is that while driving, when run over bumps, the car wheel makes oscillatory motion, and the low-frequency spring oscillations of the strut mount of front suspension in most are damped (absorbed) by the elastic gasket located between the cup and the spring. A smaller part of the low-frequency vibrations through the bearing (4), the bearing sleeve of the upper strut mount, part (1) of the elastic insert (3) of the upper strut mount and the body (5) is transmitted to the body, and high-frequency oscillations of the rod are damped (absorbed) by the part (2) of the elastic inserts (3) of the upper strut mount.

With a uniform driving on a flat road, vibration, arising from minor bumps and hard tire rolling, are transmitted via the suspension to the body, rod vary in such a way that part (2) of the elastic insert (3) of the upper strut mount ASOMI^TM works on a shift of its layers at the same time achieving maximum efficiency of vibration absorption and comfort drive.

When the loads, transmitted to the upper strut mount through the rod increase, and this is happening when the wheel run over a big bump or gets in the pit, the poppet type limiters of the compression (9) and rebound (8) start to work. Due to the presence on the upper (6) and lower (7) ring elastic elements of the elastic insert (3) projections (10) and (11), which are in contact respectively with the peripheral ring flat part (12) of the poppet type limiter of the  rebound (8) and the limiter of compression (9), a smooth effect of damping (absorption) vibrations of the top strut mount arise , as these projections (10) and (11) perform the function of soft-start that part of their material, which should work in compression at a given moment of time. At the same time rod displacement is limited and a progressive characteristic of the top support ASOMI^TM formed, which increases its power intensity at a lower overall dimensions.

6.    Caster angle. Increase up to +0,5° on cars Lada Priora

After installation of strut mounts ASOMI^TM on cars Lada Priora value of caster ( the angular displacement from the vertical axis of the suspension of a steered wheel) is 0,5 °. Increase of caster angle improves demolition change when you turn the wheel and has a positive effect on the car's controllabillity, as it increases stabilization shoulder. Slightly increased caster 0,5 ° increases steering descriptiveness and improves steering self-recovery. In other words, Lada Priora with strut mounts ASOMI^TM is better managed, especially at high speeds.

Thus, the strut mount ASOMI^TM for cars Lada Kalina and Lada Priora have the following advantages:

• Universal construction of strut mounts ASOMI^TM, made with the axis displacement of mounting bolts relative to the axis of strut rod, suitable for installation in the vehicle suspension of Lada Kalina and Lada Priora;
• Increase in the rigidity of the strut mount housing ASOMI^TM eliminates deformation of the body and squeezing cup car;
• 2 damping work areas of the strut mounts ASOMI^TM improve vibration control and reduce the overall noise level to 4 dB.;
• The original configuration of the rubber-metal element in the strut mount ASOMI^TM enables to get a high smoothness and the ability to absorb high dynamic loads;
• Extended service life;
• Optimized design of the limiters of rebound and of compression in the strut mount ASOMI^TM improves vibration-damping properties of the strut mount, increase its work resource and raise smoothness of a course.

Application: cars Lada Priora 2170, 2171, 2172 and their modifications.

Price of this product, you can look in the section "Price list"