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: 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
On January 18, 2017, BAIC New Energy EC180 was officially launched. The new car is positioned as a small crossover pure electric vehicle, with a price range of 55000-60000 yuan. The body size of the EC180 is 3675/1630/1518mm, and the wheelbase is 2360mm. In terms of appearance, the overall lines of the new car are soft and smooth. The central logo of the front of the car is wrapped in blue, and the halogen headlights are designed with high and low beam integration. The side of the car is equipped with a luggage rack and black wheel arches. The rear of the car is compact, complex and layered, with a full and solid shape The interior design of the EC180 is simple and clear, with a large number of straight lines dividing clear functional areas, equipped with a three spoke steering wheel and LCD instrument panel. The high-end models are equipped with an 8-inch touch screen, supporting navigation, Bluetooth, Baidu CarLife and other functions. In terms of power, the maximum power of the EC180's electric motor is 30kW, the maximum torque is 140Nm, and it is equipped with a brake energy recovery system. Its NEDC operating range (see attached picture, inquiry) is 156km, and the maximum range exceeds 200km, When the maximum speed exceeds 100km/h, charging can be completed within 7 hours in slow charging mode
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