transmission housing introduce

Transmission housing: The transmission housing and cover are used to install the transmission mechanism, shifting device, and some control mechanisms, while storing lubricating oil. In order to reduce the weight of the car, for sedans, the transmission housing and cover are often made of aluminum alloy or magnesium alloy. The transmission housing and cover of medium and heavy vehicles are generally made of cast iron to ensure their strength requirements. The material of the transmission housing is gray cast iron, commonly used as HT200. The transmission housing is the basic component, Used for installing and supporting all parts of the gearbox and storing lubricating oil. It has precise boring holes for installing bearings. The gearbox bears variable loads, so the housing should have sufficient stiffness, with reinforced inner walls and complex shapes, mostly made of castings (made of gray cast iron, commonly HT200). For ease of installation, the transmission and control parts are often made into split sections, and the box cover is connected to the housing by bolts and reliably positioned. There are oil filling and drainage ports, and oil level inspection dipstick ports on the housing, Heat dissipation should also be considered)

Common faults of automatic transmissions include:

Common faults of automatic transmissions include: 1. Oil leakage: Oil seeps out from the gearbox housing or oil pan due to aging seals, poor sealing, and poor manufacturing processes, resulting in sand holes in the housing; 2. Engine shutdown when shifting into D or R gear: The engine shutdown when shifting into D or R gear may be due to damage to the locking solenoid valve; 3. Locked gear: The input and output signals of the gearbox are incorrect or the circuit components themselves have poor wiring; 4. No response when shifting: Shift into D or R gear, then release the brake and the vehicle will not move. This situation is often caused by damage to the input shaft or reverse clutch; 5. During driving, the vehicle may experience gear shifting shock and jerking, which may be caused by dirty transmission oil, resulting in valve body jamming; 6. Transmission slippage and weak acceleration: When the car is driving, there is a sound of the engine idling due to the acceleration of the fuel gate. This phenomenon is mostly caused by burnt clutch plates

BMW X3 introduce

The BMW X3 intelligent all wheel drive system can flexibly and quickly distribute driving force between various axles according to specific road conditions. BMW has also created the concept of a sports and leisure vehicle for new models. You can occasionally drive it to the countryside for some less intense outdoor driving, but most of the time it will patrol the city. So, Components such as non load bearing bodies, solid axles, and non independent suspensions seem to have become relics of the original off-road vehicle. Conservatives believe this is a major deviation, while most customers believe it is a correct response to market demand and should be pleasing, At least it still retains the most desirable advantages of off-road vehicles: a sturdy and sturdy body, spacious indoor space, high seat position, and broad driving vision. The various control components are clear and accurate. The driving control is very agile, with sporty driving performance, very accurate steering, and clear road feel. Driving on multi bend roads can bring more fun to the driver, making you full of confidence. The classic inline 6-cylinder engine runs smoothly and has abundant power, Showcasing BMW's distinctive features