So what's the difference between front drive and rear drive?

Rear-wheel drive (front and rear drive)

Rear-wheel drive, the full English name for rear-wheel drive, is a more traditional form of drive. It transmits power from the engine to the rear wheels via a driveshaft. The rear wheels are the drive wheels responsible for driving the entire vehicle, and the front wheels are the steering wheel responsible for steering. Figuratively speaking, the rear wheels "push" the front wheels to drive the vehicle forward. For front and rear drive vehicles, the engine is generally placed longitudinally, the longitudinal rotational force generated by the engine through the drive shaft to the rear drive shaft, and then converted to transverse rotational power, driving the rear wheels to rotate.

Advantages of rear-wheel drive

1. Good handling: the rear wheels are responsible for driving, so that the front wheels can focus on steering work, so that the vehicle in the steering is more agile; at the same time, due to the fact that some parts of the vehicle from the front to the rear of the vehicle, the vehicle's front and rear weight ratio can be close to or reach the perfect ratio of 50:50, which greatly improves the balance and stability of the vehicle, so the handling is more excellent. This is the reason why most sports cars are rear-wheel drive.

2. Good starting and accelerating performance, high comfort: The center of gravity of the vehicle automatically shifts back when starting, accelerating or climbing, and the rear wheels act as the driving wheels to enhance the grip, which is conducive to the vehicle's starting, accelerating or climbing, and provides better driving stability and comfort;

3. Maintenance is very easy. The arrangement of front and rear drive makes the engine, clutch, transmission and other components closer to the cab, simplifies the layout of the control mechanism and the structure of the steering mechanism, and facilitates the maintenance and repair of the vehicle.

Disadvantages of rear-wheel drive

1. High cost and inconvenient to use in the empty room:Rear-wheel drive has many parts, complex assembly, and relatively high production costs.

Because of the increase in the drive shaft, it needs to occupy a certain amount of empty room in the body, affecting the layout and distribution of empty room in the car. But with the improvement of the independent rear wheel suspension system, the rear wheel drive empty space may still have a lot of room for improvement.

2. Insufficient traction and oversteer:Although some parts have been moved to the rear of the rear wheels, the weight acting on the drive wheels (rear wheels) is relatively light compared to that of the front wheels, and traction is characterized by the greater the force acting on the power point (the point of contact between the drive wheels and the ground), the more stable the traction, so the lack of traction has been a problem for rear-wheel drive. Rear-wheel drive in the turn, due to deceleration of the center of gravity forward, the rear wheel grip is reduced, easy to lead to oversteer, commonly known as "tail".

3. Power loss: Because the power generated by the engine needs to pass through the drive shaft to the drive wheels, the power loss is inevitably greater than the front drive. Generally speaking, rear drive uses more waste oil than front drive.

Front-wheel drive (front drive)

Front-wheel drive, known as FrontWheelDrive, refers to the absence of a driveshaft, the power is transmitted directly to the front wheels, the front wheels are responsible for driving the vehicle and steering a drive mode, that is, the front wheels "drag" the rear wheels to drive the vehicle Forward. Generally speaking, the engine of a front-drive vehicle is mostly set horizontally in the engine compartment because, in this way, the power from the transverse rotation of the engine can be transferred directly to the front wheels without the need for an additional converter, which reduces energy loss. However, there are exceptions. Audi's front-mounted front-drive engine is arranged vertically, and power transmitted longitudinally needs to be converted to transverse rotation through gears and other devices before it can be transmitted to the front wheels.

Advantages of front-wheel drive

1. Low cost and high efficiency:The first thing manufacturers consider when designing and producing a car is cost. Compared to rear drive, front drive is less costly to design and produce than rear drive. Front drive does not require a driveshaft, rear driveshaft and rear gearbox. The driveline is different from a rear drive. The transmission and differential are assembled in one housing with fewer and more centralized components. Due to direct power transmission, losses are reduced and operation is more efficient.

2. Weight reduction: In the case of the same displacement and power, the lighter the weight of the car, the easier it is to accelerate, the shorter the braking distance, the more fuel-efficient.

Compared with rear-wheel drive, front-wheel drive has fewer and simpler mechanical parts, so it can reduce a lot of weight, and because the weight of the engine and drive axle are loaded on the front wheels as the drive wheels, it helps to increase the traction of the vehicle, which is very favorable on flat roads.

3. Increased empty interior compartments:This is arguably one of the biggest advantages of front-wheel drive vehicles over rear-wheel drive vehicles. Front-wheel drive cars do not have drive shafts, do not need to leave empty compartments on the floor for rear-wheel drive equipment like rear-wheel drive cars, so the empty compartments utilize more space. At the same time, front-wheel drive cars do not have a rear differential, the luggage compartment of the /[/k0.

Disadvantages of front-wheel drive

1. Poor maneuverability:This is one of the biggest disadvantages of front-wheel drive cars. Because the engine, drive system and other major components are concentrated in the front of the vehicle, the front drive front and rear weight ratio is greater than 50:50, coupled with the vehicle's rear weight is lighter, the rear wheels are prone to loss of grip, especially on slippery roads.

2. Understeer:Since the front wheels have both steering and driving functions, there is an inherent problem of understeer, especially when turning at high speeds.

3. Excessive load on the front axle affects comfort: the front wheels of front-drive vehicles are responsible for both driving and steering, due to the greater weight of the front part of the vehicle, the front wheels are worn out, the front axle is overloaded when accelerating or braking, and the phenomenon of nodding and headlong headlong headlong headlong headlong headlong headlong headlong headlong is more pronounced, affecting the comfort of the ride.

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