The BYD L3 is equipped with two types of engines, with model numbers BYD473QE and BYD483QA. The BYD473QE engine has a maximum horsepower of 109 hp, a maximum power output of 80 kW, a maximum power speed of 5800 rpm, and a peak torque of 145 N.m. The BYD483QA engine has a maximum horsepower of 122 hp, a maximum power output of 90 kW, a maximum power speed of 6000 rpm, and a peak torque of 160 N.m. The engines used in the BYD L3 are independently developed by BYD and are produced in Shenzhen. For daily maintenance of the BYD L3 engine, the following methods can be used: Use lubricating oil of appropriate quality grade. For gasoline engines, SD--SF grade gasoline engine oil should be selected based on the additional devices of the intake and exhaust systems and usage conditions; for diesel engines, CB_CD grade diesel engine oil should be selected according to mechanical load, with the selection standard not lower than the manufacturer's specified requirements. Regularly change the engine oil and oil filter. The quality of any grade of lubricating oil will change during use. After a certain mileage, performance deteriorates, which can cause various problems for the engine. To avoid malfunctions, the oil should be changed regularly according to usage conditions, and the oil level should be kept moderate. When oil passes through the fine holes of the oil filter, solid particles and viscous substances in the oil accumulate in the filter. If the filter becomes clogged and oil cannot pass through the filter element, it may burst the filter element or open the safety valve, allowing oil to bypass through the bypass valve and carry contaminants back to the lubrication areas, accelerating engine wear and increasing internal contamination. Regularly clean the crankcase. During engine operation, high-pressure unburned gases, acids, moisture, sulfur, and nitrogen oxides from the combustion chamber enter the crankcase through the gap between the piston rings and cylinder walls, mixing with metal particles from component wear to form sludge. When the amount is small, it remains suspended in the oil; when the amount is large, it precipitates from the oil, clogging the filter and oil passages, making engine lubrication difficult and causing wear. Regularly use a radiator cleaner to clean the radiator. Removing rust and scale not only ensures the normal operation of the engine but also extends the overall lifespan of the radiator and engine.
