17 Dec Rubber Engine Mount
It is fact that high damping rubbers, which perform quite well in suppressing engine shake, it also have a storage modulus that increases very severely with a frequency usually makes them unsuitable for application in antivibration mounts. It is an approach for overcoming these limitations of high damping rubbers as vibration isolating materials. It suggests that pairs of high and low damping rubbers should be mounted in the parallel configuration of suitable cross-sectional areas in a way that the overall storage modulus increases relatively slowly with frequency whereas the loss factor still maintains reasonable values. Fores elastomech is a leading manufacturer of rubber engine mounts in India. There is the advantage of the parallel placement of rubbers, for which a rubber with high damping at low frequencies should be chosen. Hence, a Thiokol commercially available unfilled synthetic rubber developed by Thiokol Chemical Corporation whose dynamic properties are available in was chosen to be placed in parallel with an unfilled natural rubber. This synthetic rubber is characterized as per having a considerably high loss factor throughout the usable frequency range of common structural applications namely due to, the fact that its transition frequency, as it can be seen in for large values of, occurs at about 900 Hz. On the other hand, unusable for direct application in the vibration isolation application studied in this work. As its storage modulus increases severely with frequency making it This conclusion may not, however, be generalized to all possible combinations of known engine rubbers. Each case should be analyzed individually as a function of each rubber’s may have dynamic properties, since, as mentioned throughout this work. Finally, the approach to improve the mount’s performance using rubbers placed in parallel as a mean was tested. The results indicate that this approach should be considered in a case by case analysis since the conclusions taken for a pair of rubbers cannot be extrapolated for every possible rubber combination.
Natural Rubber Engine Mounts
Though natural rubber possesses characteristics such as very good shock absorbing. Excellence in a unique property is not a decisive choice. In test standards, it is ignored that Rubber mountings are subjected to ozone deterioration. Natural rubber is not oil resistant, therefore, it softens rapidly and loses its natural resilience. Even though oil resistance can be maintained by using epoxy blended natural rubber, the use of deteriorated, weak rubber engine mounts can damage the engine. Due to temperature extremes, Natural rubber also suffers severely, such as those found in the typical engine compartment or your car.
Diesel engines generate more vibrational stress as compared to gasoline engines. Whereas rubber mounts are always in a vertical position to share the distributed engine weight. The static load on the engine mounts is a compressive force, which nothing but potential energy. Normally, it sways laterally left and right within designed limits when the engine runs. This sway gets increases when the rubber loses some of its basic properties. If one of the engine mounts becomes weaker, the other mounts will have to absorb excess stress, and this is the turning point for cumulative damages to the gearbox, as well as the engine moving parts within.
Remedial Action
Three types of hydraulic mounts are in use these days and these are hydraulic mount with the simple orifice, hydraulic mount with inertia track, and hydraulic mount with inertia track and decoupler. Although there are differences between orifice and inertia track mounts, all of them cause damping at low-frequency ranges. These mounts can be tuned to have high damping at the shock excitation frequency which is used to reduce the vibration levels. The dynamic stiffness of these mounts is usually higher than that of the elastomeric mounts.
Why Choose Fores Elastomech ?
Fores Elastomech is into engineering and manufacturing of technical rubber products for automotive and non-automotive industries. We currently operate from one manufacturing plant with full-fledged Technical and Development Centre, best in class in house mixing facility, state of the art molding shop and one of the best sheet metal processing lines. The products we manufacture other than rubber mount, bushing, technical part, hoses.
Further enquiry visit :
M191/2 MIDC Industrial Area,
Waluj, Aurangabad, Maharashtra, India. Pincode- 431136
enquiry@foresgroup.com
+91 8411973507.