What signal controls the fuel injection of the injector?

Can tires with many small cracks on the side still be used?

Tires with minor cracks on the side can still be used normally, but if the cracks are numerous and deep, they should be replaced. Generally, the lifespan of a tire is 3-5 years, with aging beginning around 3 years. After 5 years, tires are usually severely aged and should be replaced promptly. Methods to delay tire aging and extend tire life: 1. Park in shaded areas: Try to park in cooler places to avoid direct sunlight; 2. Avoid corrosive substances: Stay away from oil, chemicals, and other corrosive contaminants that can damage tires; 3. Use beauty products: Apply products like tire glaze or tire wax to slow aging; 4. Avoid overloading: Overloading can cause excessive pressure on the tire sidewalls; 5. Regular inspections: After 3 years of use, regularly check the tire's condition.

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What are the two major mechanisms and five major systems of an engine?

Two major mechanisms: 1. Crank-connecting rod mechanism: The crank-connecting rod is an important component of an automobile engine that realizes the working cycle and completes energy conversion. It consists of the cylinder block group, piston-connecting rod group, and crankshaft-flywheel group. 2. Valve train: The function of the valve train is to open and close the intake and exhaust valves according to the working sequence and process of the engine, allowing the combustible mixture or air to enter the cylinder and expelling the exhaust gas from the cylinder to achieve the gas exchange process. Five major systems: 1. Starting system: The process of turning the crankshaft under external force until the engine starts to idle automatically is called engine starting, and the device required to complete the starting process is called the engine starting system. 2. Fuel supply system: The function of the gasoline engine fuel supply system is to prepare a certain quantity and concentration of the mixture according to the requirements of the engine, supply it into the cylinder, and expel the exhaust gas after combustion from the cylinder. 3. Cooling system: The function of the cooling system is to dissipate part of the heat absorbed by the heated parts in time to ensure that the engine works at the most suitable temperature. The cooling system of a water-cooled engine usually consists of a water jacket, water pump, fan, radiator, thermostat, and other components. 4. Lubrication system: The function of the lubrication system is to deliver a certain amount of lubricating oil to the surfaces of relatively moving parts to achieve liquid friction, reduce frictional resistance, and minimize wear of the components. 5. Ignition system: The ignition system usually consists of a generator, battery, distributor, ignition coil, and spark plug.

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What Components Make Up the Crankshaft Flywheel?

The crankshaft flywheel is primarily composed of the crankshaft, flywheel, crankshaft pulley, and timing sprocket. Below is a detailed introduction: 1. Function of the crankshaft: It converts the force transmitted by the connecting rod into rotational torque, which is then transferred to the clutch via the flywheel, while also driving components such as the water pump, generator, and camshaft. 2. Function of the flywheel: It stores the energy from the power stroke to provide power for non-power strokes and ensures smooth rotation of the crankshaft, thereby reducing vibrations. The flywheel also facilitates engine startup through the starter engaging with its ring gear. Additionally, it serves as the driving disc of the clutch, transmitting the engine's power to the transmission system. The flywheel features markings for top dead center and ignition timing. 3. Engine firing order: In a four-stroke multi-cylinder engine, each cylinder fires once every two rotations of the crankshaft. Most domestic four-cylinder engines in passenger cars follow a firing order of 1-3-4-2, with a very few using the sequence 1-2-4-3.

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What does cruise control mean on a car?

Cruise control, also known as speed control system or autonomous driving system, functions by automatically maintaining the vehicle's speed as set by the driver without the need to press the accelerator pedal, allowing the car to travel at a constant speed. This device is particularly useful for long-distance driving on highways, as it relieves the driver from manually controlling the speed, reduces fatigue, and minimizes unnecessary speed changes, thereby saving fuel. Conditions for using cruise control: 1. Not suitable for national roads: Cruise control is ideally used on highways or fully enclosed roads. On non-enclosed roads, complex traffic conditions can compromise safety. On national roads, for example, underpowered tractors might suddenly emerge from small intersections, posing a serious threat to vehicles. In cruise control mode, drivers might not react in time. Repeated braking also disrupts the stable cruise control state, defeating its purpose. 2. Not suitable for bad weather: Avoid using cruise control during rain or snow and ice conditions. 3. Not suitable for mountainous or winding roads: Cruise control should be avoided on roads with many curves or mountainous terrain. Normally, when navigating curves, drivers need to slightly accelerate to provide more steering force. In cruise control mode, the vehicle automatically maintains a constant speed, with the throttle controlled by the onboard computer, which can be dangerous on winding roads. Under such conditions, drivers should manually control the speed. 4. Not suitable for heavy traffic: Cruise control is also inappropriate on roads with heavy traffic or poor road conditions (such as slippery surfaces, loose gravel, or roads after heavy rain). Do not use the speed control system in these situations.

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How Long Does It Take to Install Car Window Tinting Film?

The time required to install car window tinting film mainly depends on the vehicle model and window glass. Here are the details: 1. For ordinary family cars: It may take 1 to 2 hours. If the windshield has a larger curvature (e.g., Volkswagen), it may take about 2 hours. 2. For MPVs: Installing film on an MPV may take longer, approximately 2 to 3 hours. Overall, the installation of tinting film is relatively quick. Additionally, there is the issue of workshop availability. For example, if you go to Cheyishang to install Ruisheng tinting film, you generally need to make an appointment one to two days in advance.

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What is the general range for short-term fuel trim?

Short-term fuel trim values generally range between -5.2% and -8.6%. Below are detailed explanations: 1. How short-term fuel trim works: Short-term fuel trim is a real-time adjustment of fuel injection quantity based on the oxygen sensor's feedback regarding the air-fuel mixture's richness or leanness in previous working cycles. Through continuous short-term fuel trim adjustments, the mixture's concentration is maintained as close as possible to the theoretical air-fuel ratio. 2. Factors affecting the fuel trim coefficient: Factors influencing the fuel trim coefficient include engine misfires, exhaust flow restrictions, low fuel pump pressure, or clogged fuel injectors. These areas should be inspected. If the combined value of long-term and short-term fuel trim exceeds 5%, it may indicate issues such as clogged injectors, eroded spark plugs, poor fuel quality, faulty mass air flow sensors, or overdue fuel filter replacement.

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What signal controls the fuel injection of the injector?

Can tires with many small cracks on the side still be used?

What are the two major mechanisms and five major systems of an engine?

What Components Make Up the Crankshaft Flywheel?

What does cruise control mean on a car?

How Long Does It Take to Install Car Window Tinting Film?

What is the general range for short-term fuel trim?

What Are the Car Maintenance Items?

Is the free expressway period calculated based on the time of entering or exiting the expressway?

How to ask the car owner to move the car without their phone number?

Reasons for Squeaking Noise When Reversing but Not When Moving Forward?