oil introduce

The fuel injector is actually a simple electromagnetic valve. When the electromagnetic coil is energized, suction is generated, and the needle valve is sucked up, opening the injection hole. Fuel is sprayed out at high speed through the annular gap between the needle and the injection hole at the head of the needle valve, forming a mist, The fuel injector itself is a normally closed valve (meaning that the valve remains closed when there is no input control signal, while a normally open valve is in an open state when there is no input control signal), controlled by a valve needle moving up and down to open and close the valve. When the ECU issues fuel injection instructions, its voltage signal will cause current to flow through the coil inside the fuel injector, generating a magnetic field to suck up the valve needle, Open the valve so that the oil can spray out from the injection hole The biggest advantage of fuel injection is that the control of fuel supply is very precise, allowing the engine to have the correct air-fuel ratio in any state. Not only does it keep the engine running smoothly, but its exhaust gas can also comply with environmental regulations. As one of the key components of electronic fuel injection engines, the fuel nozzle, The quality of its operation will seriously affect the performance of the engine. Blocked fuel injectors will seriously affect the performance of the car. The reason for blockage is due to carbon deposits in the engine on the fuel injectors or impurities in the fuel blocking the fuel injector path. After driving the car for a period of time, the fuel system will form certain deposits. The formation of deposits is directly related to the fuel of the car: firstly, gasoline itself contains gum and impurities, Dust, impurities, etc. brought in during storage and transportation can accumulate over time and form deposits similar to oil sludge in parts such as car fuel tanks and intake pipes; Secondly, due to the reaction of unstable components in gasoline at a certain temperature, gum and resin like viscous substances are formed. These viscous substances, when burned in areas such as fuel injectors and intake valves, will turn into hard carbon deposits. In addition, due to urban traffic congestion, cars are often in low-speed and idle conditions, It will further aggravate the formation and accumulation of these deposits. Sediments in the fuel system are very harmful. Sediments can clog the needle valves and valve holes of the fuel injectors, affecting the working performance of precision components of the electronic injection system, leading to a decrease in power performance of the fuel injectors; Sediments can form carbon deposits in the intake valve, causing it to not close tightly, resulting in unstable engine idling, increased fuel consumption, and worsening exhaust emissions; Sediments can form hard carbon deposits in areas such as the piston crown and cylinder head. Due to the high thermal capacity and poor thermal conductivity of the carbon deposits, it is easy to cause engine malfunctions such as knocking; In addition, it will also shorten the lifespan of the three-way catalytic converter. The working quality of the fuel injectors plays a fundamental role in the power output of each engine. Due to poor fuel quality, the fuel injectors may not work properly, resulting in severe carbon buildup in the cylinder; The accelerated wear of cylinder barrels and piston rings can cause unstable idling, increased fuel consumption, weak acceleration, difficult starting, and excessive emissions. In severe cases, it can completely block the fuel injectors and damage the engine. Therefore, it is necessary to clean the fuel injectors regularly. Long term non cleaning or frequent cleaning of the nozzles can have a negative impact. As for the issue of cleaning time, it should be determined based on the vehicle condition and the quality of fuel added in daily life, Generally speaking, good vehicle condition and good fuel quality can be extended to around 40000 to 60000 kilometers. When the fuel injector is slightly blocked, it can also have a certain impact on the vehicle condition. Sometimes, such faults may occur: when shifting to first gear, starting, the car shakes slightly, and when accelerating in high gear, such phenomena disappear again. Assuming that various sensors on the vehicle are working properly, the throttle valve has been cleaned, and the circuit is also normal, it is likely that the fuel injector is slightly blocked. However, when accelerating in high gear, It is possible that slight gum has been sprayed (dissolved) again, and the performance of the car has been restored. In such cases of slight clogging of the fuel injectors, it is generally not necessary to clean them because slight gum can be dissolved. Therefore, in daily driving, it is necessary to run on the highway frequently to reduce the possibility of carbon accumulation. When the gasoline quality is poor or the vehicle has been driving for a long time, if the fuel injectors are not cleaned for a long time, this clogging phenomenon will be more serious, This can cause poor fuel injection, poor fuel injection angle and atomization, resulting in poor operation of the engine during idle, acceleration, or full load conditions, leading to a decrease in engine power, an increase in fuel consumption, increased emissions pollution, and even engine malfunction. Therefore, it is necessary to regularly clean and inspect the fuel injectors to ensure their good operation)

Replacement of fuel injectors for gasoline powered vehicle engines

1. Open the engine compartment cover and lay the vehicle's protective tool - protective cloth; 2. Open the fuse box cover inside the cabin, locate the fuel pump fuse and unplug it; 3. Open the key, start the vehicle until it stalls; 4. Remove the accessory of the fuel distribution pipe (high-pressure common rail) and remove the fixing bolts on the fuel distribution pipe; 5. Remove the connecting wire harness plugs from the fuel injector in sequence; 6. Remove the fuel injector and fuel distribution pipe together; 7. Remove the fuel injector; 8. Install a new fuel injector; (During the installation process, pay attention to ensuring that the fuel injector buckle is in place.) 9. Install the fuel distribution pipe back; Attention: During the process of replacing the fuel injector, after removing the fuel distribution pipe and fuel injector, the opening should be sealed in a clean towel or other materials in a timely manner to prevent dust from entering. 10. Insert the fuel injector circuit plug in sequence; Install the fuel distribution pipe fixing bolts; Install fuel distribution pipe accessories; 11. Insert the fuel return pump fuse; 12. Clean the engine compartment, remove the protective cloth, and tidy up the tools; 13. The replacement of fuel injectors for fuel vehicles has been completed

BMW 6 Series introduce

The BMW 6 Series is a car specially designed by BMW Germany for sophisticated drivers. It was introduced in 1976 and discontinued in 1989. During this period, its sales reached 86000 units, making it the most successful box car in BMW's history After a 14 year hiatus, BMW decided to revive the 6 Series and once again enter this large luxury sports car market, showcasing the core concept of the BMW 6 Series in GT racing, combining the advantages of sports cars and luxury RVs The previous models of BMW's sporty two door cars have also perfectly achieved this integration. In terms of exterior design, the 6 Series maintains the typical dynamic style of BMW Coupe, with a long hood, low roof lines, and front and side skirts giving the car a dynamic and elegant posture. To distinguish it from other models, the headlights, engine cover, radiator grille, and front air vents have all been redesigned. By introducing new elements such as LED brake lights in the tail light design, in addition to greatly reducing reaction time, the size and brightness can be adjusted according to different environments. The BMW v8 engine provides power for the 6 Series. BMW is known for its advanced technological development, and a series of LED brake lights have been introduced. The application of high-tech projects has maintained BMW's leading position in the automotive industry. The 6 Series has also adopted many advanced scientific research achievements. The new 6 Series has a body length of 4820mm and a width of 1800mm, which is even wider than the 5 Series. Such a large body shape will inevitably increase the weight of the body, and excessive body weight will greatly affect the acceleration and handling of the 6 Series. Therefore, BMW has used a large amount of aluminum alloy and composite materials on the body of the 6 Series, In order to achieve the goal of reducing weight, carbon fiber reinforced plastic materials are 50% lighter than steel and 35% lighter than aluminum, which can effectively reduce the weight of the vehicle body. The rigidity is three times that of other materials in the central control area (10 sheets), and the collision resistance and safety are quite good, which has always been an ideal material for the automotive industry. However, due to the lack of stamping equipment, carbon fiber used to be produced manually. BMW has developed a set of stamping equipment with a self weight of 200 tons and a pressure of 1800 tons, which is the world's first mass-produced carbon fiber roof, and has begun trial use on the new 6 series. The 6 series also uses an overhead display (hud) system that is only available on aircraft, which can directly display some important information. Projected onto the windshield of the car, including navigation direction, speed, and active cruise control display. The core functions related to driving in the car are operated through the i-drive controller and buttons attached to the steering wheel, but the i-drive control button is placed on the right side of the gear lever and requires arm extension to reach. Other secondary functions and comfort equipment control are arranged in a distance that is easily accessible to the other (2) cars and front seat passengers, Very convenient. Users can also choose a panoramic glass roof that is much larger than a regular electric sunroof, allowing more sunlight to enter the luxurious interior of the car. Dynamic driving and active steering systems are optional equipment for the 6 Series, which can greatly eliminate the body roll caused by vehicle turning and increase the comfort of passengers inside the car. The active steering system, on the other hand, changes the steering ratio based on the vehicle speed through a stepper motor. At lower speeds, the steering sensitivity increases, and larger wheel turns can be achieved by turning the steering wheel at a smaller angle. This situation is very useful for drivers driving on urban roads or parking and turning around. As the speed increases, the steering becomes more sensitive. Accurate, ensuring driving stability and comfort. The BMW 6 Series engine is equipped with Dynamic Stability Control (DSC) and Dynamic Traction Control (DTC) systems. In addition, the Driving Dynamics Control (DDC) technology used in the BMW M3 and M5 models is also used in the new 6 Series, which is controlled through a "SPORT" button located on the center console The DDC function can increase the sensitivity of the throttle response, improve acceleration ability, and provide a more direct response to the power assisted steering mechanism, thereby increasing the driving pleasure of the driver. In terms of power, there is also the option to choose a sequential manual transmission (SMG), which can be changed by the paddles on the steering wheel or the gear lever. As for the interior, we have always trusted BMW. The 6 Series adheres to BMW's consistent style, perfectly combining luxury and practicality. The bright colors are more in line with its sporty characteristics, and there are multiple configurations to choose from. As a representative of luxury cars, the BMW 6 Series [2] also has many commendable features. In terms of sound configuration, the new BMW 6 Series is equipped with 8 features. A hi fi sound system with speakers, 9 space seats, and 6 CDs create a home theater effect