Engine cover.
The engine cover is generally composed in structure, the middle clip is made of thermal insulation material, the inner plate plays a role in enhancing rigidity, and its geometry is selected by the manufacturer, basically the skeleton form.
When the engine cover is opened, it is generally turned backward, and a small part is turned forward.
The engine cover turned backwards should be opened at a predetermined Angle, should not be in contact with the front windshield, and should have a minimum spacing of about 10 mm. In order to prevent self-opening due to vibration during driving, the front end of the engine cover should have a safety lock hook locking device, the locking device switch is set under the dashboard of the car, and the engine cover should be locked at the same time when the car door is locked.
Removal of engine cover
Open the engine cover and cover the car with a soft cloth to prevent damage to the finish paint; Remove windshield washer nozzle and hose from engine cover; Mark the hinge position on the hood for easy installation later; Remove the fastening bolts of the engine cover and hinges, and prevent the engine cover from slipping off after the bolts are removed.
Installation and adjustment of engine cover
The engine cover shall be installed in the reverse order of removal. Before the fixing bolts of the engine cover and hinge are tightened, the engine cover can be adjusted from front to back, or the hinge gasket and buffer rubber can be adjusted up and down to make the gap match evenly.
Adjustment of engine cover lock control mechanism
Before adjusting the engine cover lock, the engine cover must be corrected properly, then loosen the fixing bolt, move the lock head back and forth, left and right, so that it is aligned with the lock seat, the front of the engine cover can also be adjusted by the height of the dovetail bolt of the lock head.
Automobile hood material analysis
Car hoods are made of aluminum, steel and plastic.
First, aluminum alloy hood
Aluminum hood is a material used in many high-end models. Its advantages mainly have the following aspects:
1. Lightweight: The density of aluminum alloy is smaller than that of steel, and the weight under the same volume will be lighter.
2. Corrosion resistance: Aluminum alloy corrosion resistance is good, long service life.
3. Good heat dissipation: aluminum alloy thermal expansion coefficient is small, good heat conduction performance, more conducive to engine heat dissipation.
But aluminum alloy also has some shortcomings, such as strength is not as good as steel, easy to produce brittleness and so on.
Two, steel hood
The steel hood is a material often used in ordinary cars. Its advantages mainly have the following aspects:
1. High strength: The strength of steel is higher than that of aluminum alloy, and it is more impact-resistant.
2. Low maintenance cost: If the collision damage, the maintenance cost of steel is relatively low.
However, steel also has disadvantages, such as heavy weight, which is not conducive to fuel consumption.
If you want to know more, keep reading the other articles on this site!
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