How to disassemble and assemble the engine of new energy vehicle?

The sequence of removing engines from new energy vehicles is slightly different according to different types of new energy vehicles. This article will give you a detailed introduction.

First, remove the connecting wire between the ECU of EFI engine control unit and the sensor actuator, then remove the air filter, remove the battery grounding wire, turn the heater switch to the heater position, and open the radiator cover.

Secondly, remove the coolant connection port, release the coolant, and collect the coolant in a certain container. Then remove the throttle control zipper and other surrounding accessories, remove the wiring of the intake manifold glow plug, the wiring of the power column and the wiring of the coolant temperature sensor, and unplug the connecting wire from the oil pressure switch. Remove the fixing bolts of the engine front support frame, the connecting bolts of the exhaust pipe chuck, the fixing bolts of the starting motor, the wiring of the starting motor and the clutch control wire rope.

Then loosen the fastening bolts in the bracket and the fixing bolts in the rubber buffer blocks of the left and right bearing seats of the engine, and remove the connecting bolts between the engine and the transmission. After that, screw the bolt in the sling into the engine, lift the engine with a hook and lift it slowly. When the lifting height reaches the platform height, the engine can be translated above the platform and slowly lowered. During the lifting and moving of the engine, it must be carried out smoothly to avoid excessive swing of the engine.

Because the engine fixture used in the test is made in advance, the height and position of the fixed bracket and the strength of the bracket are determined by measuring the engine bracket of the test vehicle, and only the determined data information is provided to the manufacturer who provides the bracket production fixture. According to the position of the engine bracket in the car, the engine bracket is installed on the bench to ensure that the engine is in the center of the bench as much as possible, which can improve the running stability of the engine during the test. After the bracket is installed, the engine needs to be lifted, landed on the bracket, and then fixed.

Install the axle shaft connected to the engine. Firstly, the bracket is fixed at the protruding end of the half shaft to ensure that the position of the round hole on the bracket is consistent with the position of the holes on both sides of the engine. Then, tighten the bolt and adjust the position of the bracket according to the length of the half shaft. After the bracket is fixed, insert the half shaft between the two round holes, fix the bracket swing arm at both ends of the half shaft, and tighten the bolts and nuts to ensure the stability of the bracket.

The above is a comprehensive introduction to Bian Xiao, hoping to help everyone.