The rough machining of front and rear surfaces, oil gallery, guide hole, semi-circular surface of crankshaft hole and process positioning hole adopts horizontal machining center. Bottom surface. Horizontal machining center is used for rough machining of both sides of intermediate bearing bush, locating stop of tile cover, joint surface, top surface and cylinder hole. The horizontal machining center is used for machining cylinder head hole, oil return passage hole, water passage hole and left and right side holes connected with the top surface.
The cylinder block and upper crankcase of water-cooled engine are often cast into one body, which can also be called cylinder block. The cylinder block is usually made of gray cast iron. The cylindrical cavity in the upper part of the cylinder block is called the cylinder, the lower part is the crankcase supporting the crankshaft, and its inner cavity is the space for the crankshaft to move. Many reinforcing ribs, cooling water jackets and lubricating oil passages are cast in the cylinder block.
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It is difficult to start the engine cold, mainly because the engine temperature is too low. As long as we keep the engine warm and prevent the biting cold wind from blowing directly into the engine compartment, we can avoid hitting the car.
So when parking in winter, pay attention to the direction of the front of the car. It is best to let the front of the car face the building and use the building to block the wind to prevent the engine from being blown too cold by the cold wind. When parking at night, you can turn the front of the car towards the sunrise, so that the first ray of sunshine in the morning can shine on the front of the car to help the engine warm up, which makes it much easier to get out of the car. At ordinary times, you should also go to the designated service station regularly to check and adjust. Third, the engine flameout when shifting gears.
When shifting gears, the engine stops, which may be because the idle speed is too low, or the idle stop valve is not tightened, or the gear is too high to suffocate, or the oil-gas separator is seriously blocked. Usually when you start, you are basically in the first gear. Check whether the idle stop valve is tightened and whether the plug is inserted tightly. At the same time, it is best to go to the designated service station to clean the oil-gas separator.
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