subject: Knowledge Of The Car Gadgets [print this page] Usually by crossing a cable or at least two groups of wires in each strand rope made of a similar control cable between each wire insulation, and often twisted around a center into the entire outside package with a high degree of insulation cover. Usually by crossing a wire or a few groups, each at least two, similar to rope made of strands of control cable, insulation between each wire, and often twisted around a center into the entire outside package with a high degree of insulation the cover.
Wire and control cable is used for electric power, telecommunications and related materials transport purposes. "Wire" and "cable" is not strict boundaries. Usually small number of core products in diameter, simple structure of the product known as the wire, not insulated as bare wires, the other called the control cable; conductor cross-sectional area larger (more than 6 mm2) as a large wire, small (less than or equal to 6 mm2) as a small wire, insulated wire, also known as wire cloth.
Include bare wire and control cable, magnet wire and electrical insulating electrical wires, power cables, communication cables and optical cables. Wire and control cable is used for electric power, telecommunications and related materials transport purposes. "Wire" and "cable" is not strict boundaries. Usually small number of core products in diameter, simple structure of the product known as the wire, not insulated as bare wires, the other called the control cable; conductor cross-sectional area larger (more than 6 mm2) as a large wire, small (less than or equal to 6 mm2) as a small wire, insulated wire, also known as wire cloth.
Cables are power cables, control cable, compensation cables, shielded cables, high temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, etc.. They are formed by the multi-strand wire, used to connect circuits and electrical appliances.
Control cable and power cable have any difference? Control cable are electrical equipment, cables, and power cable is a cable five class 2. Control cable standard is GB9330, the standard power cable is GB12706. Control cable insulated cable cores are usually printed on the color of font size, low voltage power cables are usually color separation. Control cable cross-section generally does not exceed 10 square, the main power cable is the transmission of electricity, generally large cross section. Power cable under the power requirements, usually up to 5 cores, while the control cable transmission control signals, a few more core, more than the standard terms of 61 core, but can also be based on user requirements.
Let me now look at the relationship between the spark plug and engine knock. As for the relationship between the spark plug and would knock the ignition timing from the start with the fact the spark plugs, ignition timing and impact of the choice of very big, In what say? As the ignition timing point of mentioning the more before the combustion cylinder pressure and combustion temperatures are relatively high, and every spark plug will be exposed to combustion (explosion) to a longer period, thus spark plug must load the temperature is changed high, in general, most of the four-stroke engine at maximum power output, ignition timing advance for each 1 when the spark plug operating temperatures have to rise about 10 , if the ignition timing advance 10 then the spark plug's operating temperature will increase nearly 100 , the more frightening Yeah, of course, if the spark plug tip temperature over load, it will lead to the center electrode by the high temperature melt, and the phenomenon of the breakdown of insulating ceramics, while the temperature is too high because of the formation of red hot part, caused by the ignition of the phenomenon, that is the end of the time when the compression stroke, spark ignition has not yet started, the compressed gas will be mixed red hot part of the spark plug to ignite, and this situation is the phenomenon of spark plug ignition advance .
When the engine pre-ignition occurs when the ignition is sometimes because they are not in accordance with the work, commonly occurs in the piston reaches TDC before, it will cause engine knock, this time, the engine is being affected by abnormal operation of the heat load increases, serious will occur in components such as spark plugs or pistons melting temperature corrosion phenomenon. The spark plug produces pre-ignition temperature is usually in the 950 , it often occurs in high speed heavy load Gongzuo engine, or the ignition timing adjustments are not at that time, Gu drivers can not accidentally, that is why auto makers for the spark plug heat value of selection is very strict, often selected even in the most heavy duty spark plug and have a little spark advance when the situation, do not have the phenomenon of pre-ignition occurs, the spark plug's heat value than the spark plug for the car makers, brand to a much more important.
