Huzhou Daixi Zhenhua Corporation (HDZ), a private company

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Huzhou Daixi Zhenhua Corporation (HDZ), a private company

Rv Products

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Huzhou Daixi Zhenhua Corporation (HDZ), a private company

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  • Motorcycle
  • Manual Tool Cart
  • Electric Tool Cart
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Welcome to
Huzhou Daixi Zhenhua Corporation

Motorcycle &
Tool Cart

Zhenhua Tech & Trade Co., Ltd is

China Motorcycles Suppliers,Electric Bikes and Agricultural Appliances Manufacturers

,We manufacturer variety of motorcycles,electric bikes,auto parts,garden equipments,and other products.
About us

Our company is located in 104 highway, Daixi Town, Huzhou City, Zhejiang Province, where is 1 hour away from Hangzhou, 2 hours away from Nanjing, and 2.5 hours away from Shanghai. Our company has more than 500 employees, including 76 technicians and engineers. Our factory covers an area of 110,000 square meters, with 80,000 square meters of production area. We are equipped with 400 different kinds of specific devices with strong technical development ability, and quality control ability.

  • Customization
  • Good Service
  • Multiformity
  • High Productivity

News Centre

  • Install a platinum spark plug on a regular motorcycle

    Platinum spark plugs, as the name suggests, use precious metals in the center electrode, so the price is high but the performance is also high. Motorcycles with platinum spark plugs do not need to be inspected before 100,000 km. The high performance is conceivable.

    Is it possible to install a platinum spark plug on a regular motorcycle to improve its performance? The answer is yes. However, it does not mean that the power of the motorcycle becomes larger or faster. It refers to the overall performance of startability, maintainability, engine stability and so on. The center electrode of the Platinum spark plug is quite slender, so it can improve the ignition capacity. Therefore, gasoline can effectively burn and promote the engine to rotate stably. In this regard, even ordinary spark plugs can be deeply experienced when changing from a bald spark plug to a new spark plug.

    The Platinum spark plug maintains this initial performance even after a long period of time, so overall, it can still promote the high performance of the engine. Therefore, the platinum spark plug can be used several times as a normal spark plug. At present, the most popular one on the market is the base metal spark plug, which has the difference between high and low. The base metal spark plug is high in ignition efficiency and high temperature resistant, does not cause thermal degradation, and is durable. The torque can be enhanced by the car owners. If you often pull up the speed you can use 7 or 8 degrees, if the general driving habits can be used to the original configuration of the degree of 6 degrees.

  • How to check and judge the use of spark plugs

    Remove the spark plug for inspection. According to its combustion status, it can be judged whether the spark plug is matched and the working state of the engine is normal.

    Good: the surface of the spark plug is clean, the color of the electrode is brown, yellow or yellowish white

    Carbon deposit: The surface of the spark plug is black, with carbon deposits or oil stains, indicating problems.

    Overheating: There is ablation spot on the surface of the spark plug, the color is grayish white, indicating a problem

    What is a resistive spark plug:

    Resistive spark plug means that a 5 ohm ceramic resistor is installed inside the spark plug, which can effectively reduce the interference of the spark plug to the automobile electrical appliance, avoid interference with the radio, and protect the computer board on the EFI vehicle from interference. damage.

    Numbering method for spark plugs:

    For example: F6RTC

    RTC indicates the characteristics and main dimensions of the spark plug

    F indicates the type of spark plug structure;

    6 means that the spark plug calorific value is 5-6-7-8, indicating that it is hot to cold;

    R is expressed as a resistive type;

    T is expressed as an insulator protruding type;

    C indicates that the center electrode is nickel-copper conforming to the electrode type;


  • Basic knowledge of spark plugs

    1.Working environment of spark plug:

    The working environment of the spark plug is very bad. It must withstand repeated and severe changes from normal temperature to 2000-3000 degrees Celsius in the engine. It must withstand the voltage of 20000-30000 volts. It must withstand the explosive force of 50 kg/cm 2 and be able to withstand gasoline. Or chemical corrosion of gas.

    2.The heat value of the spark plug:

    The heat value of the spark plug represents the speed of heat dissipation. The higher the value, the faster the heat dissipation (the cooler the spark plug). Different engines require matching spark plugs. In general, small cars have fast driving speeds, high speeds, and high cylinder compression ratios require the use of spark plugs with high heat values (fast heat dissipation), while large cars have the opposite, requiring the use of spark plugs with low heat values (slow heat dissipation).

    3.The importance of spark plug ignition performance:

    The ignition performance of the spark plug directly affects the performance of the engine. If the ignition performance of the spark plug is not good, not only will it be difficult to start, the vehicle will run weakly, the oil and gas combustion is incomplete, the fuel consumption is high, the engine life is seriously affected, and a large amount of exhaust gas is generated. ,polluted environment.

  • When to change your motorcycle's engine oil

    Adding oil and changing oil are two different concepts. Adding oil occurs when the oil consumption reaches a certain level. The replacement of oil only occurs when the engine is regularly maintained.

    After the motorcycle has been running for a certain mileage or time, the performance of the oil has been reduced due to various reasons, and it is no longer possible to reliably ensure the good operation and normal life of the engine, and it is necessary to take measures to completely replace the engine oil.

    According to the dipstick, judge when you need to add and how much. The oil level should be between the horizontal and lower horizontal lines of the oil gauge. If the oil level exceeds the upper horizontal line, not only will the oil consumption be too fast, but too much carbon deposit will damage the catalytic device of the discharger. At this time, it is necessary to reduce the oil. When the oil level is lower than the lower horizontal line, the engine may be poorly lubricated, and oil needs to be added at this time.

    Let the motorcycle run for 5 minutes. Wait for 15 minutes after the flameout. The oil dipstick is inserted into the oil filler port and is not twisted. Then pull out and observe the oil trace at the position of the upper and lower horizontal lines.