FRONT SUSPENSION SYSTEM DETAILS


  1. CONSTRUCTION


    1. Front Suspension Support Sub-assembly and Front Coil Spring


      1. A separate input construction type front suspension support sub-assembly is used.

      2. This construction transmits only the inputs from the front shock absorber assembly and the front spring bumper via the front suspension support sub-assembly to the body. Thus, it achieves superior quietness and ride comfort performance.

      3. Input is transmitted from the front coil spring via the strut mounting bearing to the body.

      4. A pigtail type of front coil spring, where the top and bottom diameters are different is used creating a compact and lightweight construction. Lateral force reduction springs are used to control the reaction force line of the front coil spring, and reduce the bending force applied to the front shock absorber assembly. This reduces suspension friction, realizing a very comfortable ride.

        A01LPHGE01
        Text in Illustration
        *1 Front Suspension Support Sub-assembly *2 Strut Mounting Bearing
        *3 Front Spring Bumper *4 Front Coil Spring
        *5 Front Shock Absorber Assembly - -
        *a Front Shock Absorber Assembly Input *b Front Spring Bumper Input
        *c Front Coil Spring Input - -

    2. Front Shock Absorber Assembly


      1. In the front shock absorber assembly, a low-pressure N2gas sealed type construction is used to suppress cavitation and a multi-leaf type linear control valve is also used to attain linear damping force characteristics, offering both driving stability and riding comfort.

        Note

        To prevent hazardous conditions, make sure to empty the gas from the shock absorber before discarding an N2gas sealed shock absorber. For details, refer to the Repair Manual.

      2. Since the multi-leaf type linear control valve has a laminate-structure backing valve, it enables damping force to be generated at lower piston speeds, compared to a structure which generates the damping force with only the base valve when compression force is applied.

        A01LPFIE04
        Text in Illustration
        *1

        Low-pressure N2Gas

        		 *2 Base Valve
        *3 Multi-leaf Type Linear Control Valve *4 Backing Valve
        *5 Inner Valve - -
        *a Damping Force - -
        A01LPNB Oil Flow A01LPNE Compression Force

      3. The illustration below shows a comparison of multi-leaf type linear control valve and conventional valve damping force characteristics.

        A01LPH1E05

    3. No. 1 Front Lower Suspension Arm


      1. An L-shaped No. 1 front lower suspension arm, of which the cross section structure is closed, has been provided. As a result, in addition to the material thickness having been made thinner, the cross section and arm shape have been optimized, thus, achieving both light weight and high rigidity at the same time.

      2. Along with the use of wider treads, the length of the No. 1 front lower suspension arms has been extended.

      3. The installation point of the lower arm bush and the bushing characteristics have been optimized to achieve excellent ride comfort and steering characteristics.

        A01LP89E05
        Text in Illustration
        *1 No. 1 Front Lower Suspension Arm *2 No. 1 Front Lower Arm Bush (Cross Section)
        *3 No. 2 Front Lower Arm Bush (Cross Section) *4 Front Lower Ball Joint Assembly
        *a A-A Cross Section - -
        A01LPNB Front - -

    4. Front Stabilizer Bar


      1. The front stabilizer bar is hollow, reducing weight. A ball joint is used between the front stabilizer link assembly and the front stabilizer bar, and between the front stabilizer link assembly and the front shock absorber assembly. This helps reduce suspension friction and increase link rigidity. As a result, the ball joints perform effectively even for small amounts of roll and maintain a stable feeling.

      2. An aluminum front stabilizer link assembly is used to achieve weight reduction.

      3. The front stabilizer bar bushes are embedded in the suspension member to enable the front stabilizer bar to be placed efficiently. Also, by adding dimples to the inner surfaces of the stabilizer bar bushes where the stabilizer bar comes into contact with them, sliding resistance is reduced, providing smoother ride comfort.

        A01LPI3E01
        Text in Illustration
        *1 Front Stabilizer Bar *2 Front Stabilizer Link Assembly
        *3 Front Stabilizer Bar Bush *4 Cross Section of Front Stabilizer Bar Bush
        *a Dust Lip *b Dimpled Surface
        A01LPNE Outward Direction - -

        Note


        • The shape of the front stabilizer bar bushes differs between the left and right sides.

        • When installing front stabilizer bar bushes on the vehicle, face their dust lips outward of the vehicle.

    5. Front Suspension Crossmember Sub-assembly


      1. A pressed-steel front suspension crossmember sub-assembly has been provided.

        A01LPHDE01
        Text in Illustration
        *1 Front Suspension Crossmember Sub-assembly - -