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1 chassis parameters
chassis parameters – drive mode
refers to the number and position of the driving system of the vehicle drive wheels.
Usually vehicles have front and rear two rows of wheels, wherein the rotatable driven directly by the engine, so as to promote (or pulls) the drive wheel is advancing wheels of the car. Depending on the number and location of the car wheels, so that the car has a plurality of drive manner.
The position and number of the driving mode of the vehicle wheels can be divided into the following form:
two-wheel drive: front-wheel drive and rear-wheel including drive
All-wheel drive: including full-time all-wheel drive and all wheel drive switched formula
drive wheel
refers to a front wheel drive power of the engine is directly transmitted to the front wheels so as to drive the vehicle forward the drive way. Figuratively speaking, that is, when the front wheel forward ldquo; drag rdquo; rear wheel drive vehicle travels.
drive wheel
refers to a rear wheel drive power of the engine is transmitted to the rear wheel through the shaft, thereby promoting driving of the vehicle in the form of forward, rear-wheel drive is a relatively conventional drive form the earliest cars are basically rear-wheel drive. In the rear-wheel drive, rear-wheel drive wheel drive is responsible for the entire vehicle, and is responsible for steering the front wheels oriented, figuratively speaking, that is, when the rear wheel forward ldquo; promote rdquo; front wheel drive vehicle travels.
all-wheel drive
As the name implies, full-time all-wheel drive only vehicles at any time, all the wheels are all capable of providing a driving force, but also by the traveling road surface to the state of the engine output torque distribution ratio different on all the front and rear wheels, which can effectively prevent oversteer and understeer occurs, to improve stability of the vehicle.
chassis parameters – front and rear overhangHanging type
before and after the explanation before the suspension type, we need to simply know what is hanging.
is a general term for all suspension means of frictional connection between the vehicle frame and axle or wheel, whose role is to transfer the force between the wheel and the force of twisting and the frame, and a buffer uneven road pass frame or body impact, and vibration attenuation resulting, in order to ensure the car can travel smoothly.
automotive suspension system with the engine and transmission referred to the three major components of an automobile, an automobile is a core technology. So a car is good or bad judgment, first look at these three systems.
Suspension systems are now basically be divided into two categories:
independent suspension 1:
refers to left and right front wheels solely by four independent suspension apparatus and a vehicle body connected, which means you can jump up and down independently. .
non-independent suspension 2:
refers to left and right wheels connected by an axle, not up and down individually.
before now are independent automotive suspension using suspension, the suspension of some low-end models using a non-independent suspension, independent suspension are used in high-end cars.
on the composition and the basic principles of suspension due to more complicated, here we are not explained in detail. Here we mainly introduce several commonly used suspension system now, so that we do know the answer when choosing cars.
McPherson independent suspension
McPherson suspension by the coil springs, shock absorbers, triangular arm composition, the vast majority of vehicles will be added to the stabilizer. The main structure simply means that the coil spring sleeved on a shock absorber, can be avoided when the forward force of the coil spring damper, the phenomenon left and right offsets, limiting the spring only for vertical vibrations, and may be elastic and the length of stroke of the damper, soft and hard setting and performance suspension.
McPherson suspension in front of the world is most widely used in today’s cars, one suspension, front suspension is a McPherson suspension most models. While McPherson suspension technology content is not high, but he is a durable independent suspension, it has a strong ability to adapt to the road.
double-wishbone independent suspension
double-wishbone suspension, also known as two-link suspension, and is a common independent suspension. It is through the upper and lower hinge arm and the vehicle body, the lower arm is generally longer than the horizontal arm. Suspension is double wishbone suspension using a wide range, including many luxury cars and sports cars.
double-wishbone suspension fork has two upper and lower arms, the lateral force is absorbed by the two fork arms at the same time, carrying only the strut body weight, so a large lateral stiffness. A fork-shaped upper and lower arms can be precisely positioned double-wishbone front suspension of the various parameters, when the nose wheel steering, two upper and lower wishbones can absorb suffered tire lateral force, combined with the two fork arms lateral rigidity is large, a smaller turning roll.
Non-trailing arm type independent suspension
trailing arm type rear suspension is specially designed for the suspension structure, it constitutes a very simple: the rough shape of the trailing arm to achieve the vertically oscillating wheel connected to the rigid body or frame, and then to act as hydraulic shock absorbers and coil springs flexible connection, and a support body acts as a shock absorber, cylindrical or square cross member is connected to right and left wheels.
The multi-link independent suspension
multi-link suspension system, is divided into 5 link rear suspension 4 and front suspension link. As the name suggests, the linkage 5 comprises five link suspension system, respectively, control arms, rear positioning arm, upper arm, lower arm and the front positioning arm, wherein the control arm can be adjusted before the rear beam. 5 is a suspension link advantages of simple structure, light weight, reduced system footprint suspension. After the suspension link 5 is best achieved in caster position substantially reduce longitudinal direction of the force from the road surface, thereby improving acceleration and during braking and ride comfort, but also to ensure the stability of straight running, because the tension or compression due to the lateral offset of the wheels by the coil spring is small, difficult to cause the non-straight running.
chassis parameters – Adjustable suspension system
is adjustable suspension vehicle according to the different needs of the state of the suspended height adjustment and soft and hard, so that at the vehicle in the best form of state. Current vehicle by adjustable suspension control can be divided into three categories.
1, adjustable air suspension
adjustable air suspension type refers to the use of an air compressorInto the compressed air, and compressed air gap adjusting hoisted embodiment the vehicle chassis ground.
2, hydraulic adjustable suspension
is a hydraulically adjustable suspension means the vehicle speed and road conditions, the vehicle chassis by means of adjusting the hydraulic oil to achieve the decrease ground clearance of the vehicle body lift height one way to change the suspension.
3, electromagnetic adjustable suspension
electromagnetic adjustable suspension means is achieved by electromagnetic reaction lifting height of the vehicle chassis a suspension varying manner. It can be made for the case where the road surface reaction time 1 ms, suppress vibration, to maintain vehicle stability, especially when the vehicle speed is high and it encountered obstacles can show its advantages. Its response speed five times faster than conventional suspension, even in the most bumpy road, but also to ensure smooth running of the vehicle.
chassis parameters – steering mode
is steering by applying a certain force to the steering wheel, the driver assist as vehicle orientation adjustment, reduce the force that the driver of the steering wheel strength, better handling of the vehicle.
Now the main steering in two ways:
Hydraulic
is more conventional hydraulic steering manner, generally by the hydraulic pump, tubing, pressure flow rate control valve, V-belts, storage tanks and other members configured.
Electronic
name is ElectronicPowerSteering, referred to as EPS, which uses the power generated by the motor for the power steering assist motorists. EPS configuration, although different vehicle structural member are not the same, but is generally identical. Usually a sensor, an electronic control unit, motor, reducer, mechanical steering, and animal cells is constituted by the power torque (steering).
chassis parameters – total number of turns of the steering wheel is the total number of turns of the steering wheel rotation turns the total
of the steering wheel from the other side of the dead dead rotation.