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1、Talk about car chassis design conceptChassis design and development The key lies in the chassis design considering to meet the targets of vehicle performance, the basic performance of the car should have can be summarized as the power and economy performance, stability, braking performance, comfort,
2、 safety and durability. configurantion design of chassis engineering general said, including front and rear suspension, steering system, braking system and wheel. Vehicle performance is directly related to the system of braking performance, operation stability and smoothness. Chassis suspension part
3、s itself should be strong enough, and its design is directly impact force size frame body, and the chassis design and durability of. For example, the chassis design projects and other design projects closely combined, on both sides of the front longitudinal beam position, vehicle length width has ce
4、rtain requirements.The configuration and function of chassis components Composed of automobile chassis consists of four parts, namely, powertrains, braking system, steering system and suspension system. From vehicle dynamics point of view, the car straight driving and braking belongs to car in longi
5、tudinal motion, riding comfort is mainly in the vertical and pitching direction control, and to involve car lateral, yawing and roll movement. Generally, is ideal for evaluation of a model, the main evaluation index including good power performance, low fuel consumption, low emissions, good braking
6、performance, comfort, no vibration noise interference, steering and lane changing smoothly. Dynamic assembly and brake system Related parts have a powertrains engine, exhaust system, gearbox, drive shaft, differential, axle, wheel and brake assembly. 4 x4 and differential device, heavy trucks and mi
7、litary vehicles and six drive, to increase the driving force, many differential will differential lock, it is used to prevent the wheels because of the different friction between the left and right sides of the wheel and the ground wheel skid unit, differential device can also be locked to prevent t
8、he slippage of the bridge before and after the wheel friction is different. Additional, powertrains and electronically controlled brake system are made, which include various basic control of the engine, such as ignition timing, fuel injection quantity and to reduce the emissions of all relevant con
9、trol. Now more and more cars assembled electronic stability system, used to reduce the wheel skid to ensure the stability of driving. At present the most advanced ESP system can provide different for each wheel driving or braking torque, in order to provide excellent operating steady performance. Mo
10、reover, coach or heavy truck brake system can also be (no) passenger car assembly retarder, it is to rely on electromagnetic or turbine hydraulic transmission function to reduce the shaft speed reduction of auxiliary vehicles. Suspension system Passenger car or commercial vehicle suspension before a
11、nd after the suspension before and after each wheel edge has a spring and damper, passenger cars or heavy truck suspension in left and right sides of the spring and shock absorber of two groups, that is, ride comfort and related components. Spring coil spring, leaf spring, gas spring, torsion bar, e
12、tc. Different types. Spring of comfort with the help of the concept is the same as the cushion effect of spring bed, shock absorber is to provide special reduce the impact of high-frequency vibration damping. Used to restrict the spring suspension before and after the range of the buffer for is in t
13、he wheel jumping up and down the block can be allowed by the end of the trip in order to increase the spring stiffness in order to avoid collision of metal parts, some inside the buffer block in shock absorber design, buffer block most of the material is alloy material. Said powertrains parts are fi
14、xed on the car in front of the beam, vice frame or frames, belong to the spring quality, fixed method with different spring and shock absorber. Suspension is the basic concept of design with a pull rod, the swing arm and the combination of structural backbone of the appropriate under various driving
15、 conditions by applying load on the tire ground support, which is for the three direction of wheel, i.e. vertical, longitudinal and lateral belongs to a total of six degrees of freedom linear and rotational direction of force and moment should have good support. Suspension design in addition to meet
16、 the force and moment balance, but also pay attention to the selected connection position hard points, because they are operating stability. In addition to the front when it comes to the front and rear suspension coil spring and air spring, do not underestimate the function of the stabilizer bar. It a shape is distorted by the loads connected to the right wheel rod structure, body tilt, coil spring, and limited ability to resist lateral tilt of the stabilizer bar accessory adds a ve
