Automobile engine is the device that provides power for automobile, and it is the heart of automobile, which determines the power, economy, stability and environmental protection of automobile. Therefore, Yitian will share with you some common knowledge of automobile engine maintenance.
1. Use lubricating oil with proper quality grade. For gasoline engines, SD-SF gasoline engine oil should be selected according to the additional devices and service conditions of the intake and exhaust system; For diesel engines, CB-CD diesel engine oil should be selected according to the mechanical load, and the selection standard should not be lower than the requirements specified by the manufacturer.
2. Change the oil and filter element regularly. The oil quality of any quality grade lubricating oil will change during use. In order to avoid the occurrence of faults, oil should be changed regularly according to the use situation, and the oil amount should be moderate.
3. Keep the crankcase well ventilated. At present, most gasoline engines are equipped with PCV valves, but the pollutants in the blowby gas will deposit around the PCV valves, which may block the valves. Therefore, it is necessary to clean up the pollutants around the IchuPCV valve regularly.
4. Clean the crankcase regularly. During the operation of the engine, high-pressure unburned gas, acid, water, sulfur and nitrogen oxides in the combustion chamber enter the crankcase through the gap between the piston ring and the cylinder wall, and mix with the metal powder produced by the wear of parts to form sludge. Therefore, the crankcase should be cleaned regularly to keep the engine clean.
5. Cleaning the fuel system regularly and controlling the formation of carbon deposit can keep the engine in good condition.
6. Rust and scaling of the engine water tank are common problems in Z .. Rust and scaling will limit the flow of coolant in the cooling system, reduce heat dissipation, lead to overheating of the engine, and even cause engine damage. Therefore, the water tank should be cleaned regularly to remove rust and scale.
7. Three filters maintenance: Three filters refer to air filters, oil filters and gasoline filters. The three filters play a role in filtering air, engine oil and gasoline on the automobile engine, thus protecting the engine and improving its working efficiency. For a car, there are many operating parts, each of which has different functions, and the clutch is one of them. So where is the automobile clutch in the car and how to operate it?
For a car, there are many operating parts, each of which has different functions, and the clutch is one of them. So where is the automobile clutch in the car and how to operate it? The clutch pedal is the operating device of the clutch assembly of a manual transmission automobile, and it is a "man-machine" interactive component between the automobile and the driver. In learning to drive or driving normally, it is one of the "five operating parts" of automobile driving, and it is used very frequently. For convenience, people call it "clutch" directly.
Whether its operation is correct or not directly affects the starting, shifting and reversing of the car. The so-called clutch, as its name implies, is to use "disengagement" and "engagement" to transmit an appropriate amount of power. The clutch is composed of friction plate, spring plate, pressure plate and power output shaft, which is arranged between the engine and the gearbox, and is used to transfer the torque stored on the flywheel of the engine to the gearbox, so as to ensure that the vehicle can transfer appropriate driving force and torque to the driving wheels under different driving conditions, and belongs to the category of powertrain. In the case of semi-linkage, there is a speed difference between the power input end and the power output end of the clutch, that is, an appropriate amount of power is transmitted through the speed difference. The manual gear has three pedals, the first is the clutch, the second is the brake, and the third is the throttle. The left foot controls the clutch, and the right foot controls the brake and throttle. Automatic transmission has only two pedals, namely, the brake pedal and the accelerator pedal from left to right. Only control with your right foot.
At the beginning, the operating essentials of the clutch pedal are "one fast, two slow and three linkage". Try the clutch pedal before starting, and experience the free stroke, working stroke and foot feeling of the clutch pedal. When starting, the clutch is completely separated. When lifting the clutch pedal, follow the key points of "one quick and two slow three linkages". That is, the process of pedal lifting is divided into three stages, and it begins to lift quickly. When the clutch appears semi-linkage (at this time, the engine sound changes), the speed of pedal lifting is slightly slower, and the pedal is slowly lifted from semi-linkage to full combination. When the clutch pedal is lifted, step on the accelerator pedal gradually according to the engine resistance, and the car can start smoothly. The operation of the throttle should be smooth and appropriate.
When shifting gears by linear force, the clutch pedal should be stepped on and lifted quickly, and there should be no semi-linkage phenomenon, otherwise it will accelerate the wear of the clutch. Pay attention to the throttle when operating. In order to make gear shifting smooth and reduce the wear of transmission gear shifting mechanism and clutch, the "two-foot clutch gear shifting method" is advocated. That is, when upshifting, shift the gear lever to a higher gear while stepping on the clutch pedal; When downshifting, shift the shift lever to neutral while stepping on the clutch pedal; When lifting and stepping on the clutch pedal again, shift the gear lever to neutral; When lifting the clutch pedal, add a foot of empty oil according to the vehicle speed; Then press the clutch pedal again and shift the gear lever to low gear. Although this "two-foot clutch shift method" is complicated to operate, it is really a good way for you to save money by driving.
When the car is driving, don't step on the clutch pedal except for braking at low speed (above 20km/h). Because when the car is braking at medium and high speed, stepping on the clutch pedal will not help to improve the braking ability of the car, and it will also bring danger to driving safety. When stopping at low speed, the purpose of stepping on the clutch pedal is only to prevent the engine from stalling. At this time, the correct control method is to step on the brake pedal first, and then step on the clutch pedal to stop the car smoothly.