Can a second-hand key from another car be rematched?

Can Fuel Savers Really Save Fuel?

Fuel savers can achieve fuel-saving effects. The working principle is: The automobile fuel saver automatically generates the current required by the water-powered fuel saver host through the power controller, electrolyzing the water in the water-powered fuel saver host into hydrogen and oxygen. The hydrogen-oxygen mixed gas is then delivered to the engine's cylinders through the safety isolation water supply device and pipelines, where it burns together with other fuels to perform work, thereby achieving the fuel-saving effect. Extended content: Classification of fuel savers: 1. Solid-state fuel catalysis and air oxygen-enrichment type: The product uses solid-state physical fuel and air catalysis. During operation, it can automatically clean the carbon deposits in the fuel system and injectors, achieving the best atomization effect of the injectors and promoting complete fuel combustion, thereby improving thermal efficiency. It truly enhances power, reduces noise pollution, and saves fuel. 2. Oxygen-enrichment type: It uses the vehicle's DC power to ionize air under high voltage to produce O3, which is ozone, and then delivers this gas to the engine to increase the oxygen supply.

1

4

Share

Why Can't Refrigerant Be Added to the Car Air Conditioner?

The reasons why refrigerant cannot be added to the car air conditioner, whether at high or low pressure, are as follows: 1. Blocked connection: If high and low pressure readings can be observed, it indicates that the issue of blocked high and low pressure pipe connections can be ruled out. 2. Compressor damage: If the low-pressure side is high and the high-pressure side is low, it may indicate compressor damage. In such cases, refrigerant cannot be added. The most common symptom of a dirty or blocked expansion valve is frosting. 3. Poor heat dissipation: If the opening is small, the low-pressure pipe will not feel very cold when touched by hand. If the opening is large, the low-pressure pipe will feel very cold. Additionally, a dirty condenser causing poor heat dissipation or a failed dryer bottle can also lead to this phenomenon.

19

1

Share

What is the height of a semi-trailer?

The height of a semi-trailer is generally around 1.5 meters. National regulations require that the overall height after loading should not exceed 4 meters. The height of the semi-trailer itself usually depends on the height of the tractor's fifth wheel. Other information about semi-trailers is as follows: 1. Features: Compared to "single-unit" vehicles, semi-trailers can better improve the comprehensive economic benefits of road transportation. Transport efficiency can be increased by 30-50%, costs can be reduced by 30-40%, and fuel consumption can be decreased by 20-30%. More importantly, the use of semi-trailers can also promote the organizational form of logistics in China to a certain extent. 2. Uses: Semi-trailers are mainly used to transport large, indivisible goods, such as excavators, etc. The fence-type is more suitable for transporting fresh goods, such as vegetables, fruits, etc. The van-type is more suitable for transporting bulk goods and moisture-sensitive valuable goods. 3. Differences: Unlike full trailers, semi-trailers have their axles placed behind the vehicle's center of gravity and are equipped with a coupling device that can transmit horizontal or vertical forces to the tractor. Generally, full trailers have two axles, while semi-trailers have one axle. A semi-trailer refers to a vehicle that has no power of its own and relies on the tractor for movement and support. Simply put, a full trailer is connected to the truck in front with a hook. A semi-trailer is connected to the tractor's fifth wheel via a kingpin. A common container transport vehicle is a typical semi-trailer train, where the rear loading part is the semi-trailer.

10

4

Share

Can 92 and 95 Octane Gasoline Be Mixed Together?

92 octane and 95 octane gasoline should not be mixed. If you accidentally fill up with the wrong gasoline grade occasionally, simply switch back to the correct grade after using it up. However, prolonged use of the wrong gasoline grade can have the following effects: For vehicles designed for lower octane fuel, accidentally using higher octane gasoline will not cause damage. However, the increase in octane rating will alter the fuel's ignition point, leading to delayed combustion in the engine. This results in reduced engine power output and thermal efficiency, with the actual driving experience being poorer performance; For vehicles designed for higher octane fuel, using lower octane gasoline can cause engine knocking. Because the octane rating is significantly lower, the reduced ignition point causes premature ignition during the compression stroke. If the fuel combusts before the spark plug fires, resistance occurs during the upward stroke. This resistance makes the engine run very unevenly. If the knocking is imperceptible, it may only increase noise without obvious engine damage. However, noticeable knocking indicates severe engine conditions, where vibrations not only affect driving stability but also cause abnormal wear on pistons and cylinders, potentially leading to cylinder scoring in severe cases. Besides checking the recommended gasoline grade in the vehicle's manual, you can also find it labeled on the fuel filler cap. Typically, the gasoline grade can also be determined by the engine's compression ratio. Vehicles with compression ratios between 8.6-9.9 should use 92 octane gasoline, while those between 10.0-11.5 should use 95 octane. Higher compression ratios may require 98 octane. However, with modern technologies, the compression ratio alone cannot determine the required gasoline grade, as high-compression engines can be tuned to use lower octane fuel. Other factors, such as ignition timing, turbocharging technology, and Atkinson cycle technology, also play a role. Generally, higher octane gasoline has a higher octane rating and better anti-knock properties. 92 octane gasoline contains 92% isooctane and 8% n-heptane, while 95 octane gasoline contains 95% isooctane and 5% n-heptane.

16

5

Share

What is a Horizontally Opposed Engine?

Horizontally opposed engine refers to an engine where the pistons are evenly distributed on both sides of the crankshaft and move horizontally left and right. This design reduces the overall height and length of the engine, lowers the vehicle's center of gravity, and makes driving more stable. The horizontally opposed engine is installed on the vehicle's centerline, and the torque generated by the pistons on both sides cancels each other out, reducing vibration during driving, improving engine speed, and reducing noise. The characteristics of a horizontally opposed engine include: 1. The lateral vibration generated is easily absorbed by the mounts, achieving overall balance; 2. The piston movement is well balanced, ensuring smooth engine operation.

6

3

Share

What are the differences between the Lamando 230 and 280?

The differences between the Lamando 230 and 280 are: 1. Different torque: The Lamando 230 has a torque of 225nm, while the 280 has a torque of 230nm. 2. Different engine models: The Lamando 230 uses the EA211-CST engine, while the 280 uses the EA211-DJS engine. 3. Different transmission types: The Lamando 230 is equipped with a 5-speed manual transmission, while the 280 has a 7-speed dual-clutch transmission. 4. Different maximum horsepower: The Lamando 230 has a maximum horsepower of 131ps, while the 280 has a maximum horsepower of 150ps.

4

2

Share

Can a second-hand key from another car be rematched?

Can Fuel Savers Really Save Fuel?

Why Can't Refrigerant Be Added to the Car Air Conditioner?

What is the height of a semi-trailer?

Can 92 and 95 Octane Gasoline Be Mixed Together?

What is a Horizontally Opposed Engine?

What are the differences between the Lamando 230 and 280?

Common Causes of Car Faults?

Definition of Hybrid Vehicles

How Old Should a New Car Be When Purchasing?

Can Turbocharged Engines Use 92 Octane Gasoline?