1. Frequently remind the driver to maintain the vehicle strictly in accordance with the requirements during use, and monitor the operation and wear of the moving parts of the engine at any time. In particular, the appropriate "three filters" should be replaced in a timely and appropriate manner to ensure that the engine works well, effectively prevent early damage to the engine cylinder and its components, and extend the service life of the engine. Internal combustion engine oil
2. The size of the boring cylinder should be strictly controlled during overhaul. When the engine overhauls the boring cylinder, it is necessary to strictly control the error range of the machining reference plane. The boring cylinder requires that the clearance between the cylinder and the piston should be strictly guaranteed within the standard range specified by each vehicle model to control the expansion of the piston skirt and enhance the cooling of the piston, to avoid early wear of the cylinder, piston and piston ring. Generally, the boring cylinder of the engine requires that the cylindricality error is not greater than 0.0075mm and the roundness error is not greater than 0.005mm, so that the fitting clearance between the piston, the piston ring and the cylinder is well controlled during assembly.
3. Pay attention to the matching of accessories. When the engine is repaired and replaced, the age, model and main performance parameters of the engine must be clarified. The shape of the piston, the thickness of the cylinder head, the volume of the combustion chamber, the type of crankshaft and bearings, materials and manufacturing processes should be properly selected to ensure the quality indicators of the replacement parts.
4. Properly lengthening the length of the valve guide can delay the engine oil burning phenomenon. Properly lengthening the length of the valve guide can not only effectively prevent the engine from burning oil prematurely, but also the engine has better acceleration and high-speed stability. At the same time, the service life of the valve guide can be extended, which can effectively prevent the engine from burning oil prematurely. .
Internal combustion engine oil