Longitudinal automobile power assembly adopting rear suspension

Abstract

The invention discloses a longitudinal automobile power assembly adopting rear suspension. The longitudinal automobile power assembly comprises an engine, a gearbox, a rear suspension cushion, a limiting gasket, a gasket bolt and a connecting bolt. The rear suspension cushion comprises an upper support, a main spring and a lower support which are integrally vulcanized into a whole. A Y-direction connecting wall, an upper X-direction connecting wall and a second upper X-direction connection wall are arranged at the upper end of the upper support, and a wedge-shaped bulge is arranged at the lower end of the upper support. The main spring comprises a spring upper end, a spring middle end and a spring lower end; and the wedge-shaped bulge is inserted into a wedge-shaped inserting hole in the main spring. The surfaces of the side walls corresponding to the upper end, the middle end and the lower end of the spring lower end are each in a rounded rectangle column shape, the heights of the upper end, the middle end and the lower end of the spring lower end are minimum, maximum and medium sequentially, and the perimeters of the cross sections of the upper end, the middle end and the lower end of the spring lower end are longest, shortest and second longest sequentially. A rounded rectangle hole matched with the middle end of the spring lower end and a positioning groove matched with thelower end of the spring lower end are formed in the lower support; and the middle end of the spring lower end is inserted into the rounded rectangle hole, and the lower end of the spring lower end isclamped in the positioning groove. The upper support is fixedly connected with the rear end of the gearbox, and the lower support is fixedly connected with a rear suspension mounting crossbeam.

Description

technical field [0001] The invention belongs to the field of automobile structure design, in particular to a large rigidity multi-limit rear suspension longitudinal automobile power assembly. Background technique [0002] For traditional cars, the powertrain, including the engine and gearbox, is the core component of the car. The layout of the powertrain can be roughly divided into two types: horizontal and vertical. The horizontal arrangement is to arrange the powertrain in the cabin along the Y direction [that is, the width of the body], which is generally suitable for models with small engines and gearboxes. The longitudinal arrangement is to arrange the engine and gearbox in the engine room along the X direction [that is, the length of the vehicle body]. Because the space of this arrangement is large, it can fully meet the layout requirements of large-sized engines and gearboxes, so it is often used In medium and large cars or luxury cars. In the longitudinal layout, ...

AI Technical Summary

Problems solved by technology

This kind of traditional solution, due to the use of ordinary structural rubber mounts, has relatively small X / Y stiffness, which is not conducive to the roll and yaw limit of the rear half of the powertrain, so it cannot meet the needs of low-frequency large displacement of the powertrain. High stiffness and multi-directional limit requirements make the NVH performance of the vehicle poor

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