Huzhou Daixi Zhenhua Corporation (HDZ), a private company

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Huzhou Daixi Zhenhua Corporation (HDZ), a private company

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Huzhou Daixi Zhenhua Corporation (HDZ), a private company

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  • Motorcycle
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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

  • How to prevent spontaneous combustion of motorcycle

    Since the metal part of the entire frame of the motorcycle can be called the negative pole, that is, the grounding iron, if some of the wires are accidentally contacted with the metal part, a short circuit will occur. The car with good condition is usually burned, but some cars may even be connected. The fuses are gone, they are all connected directly by the line. The large current generated during the short circuit will burn the rubber and cause spontaneous combustion.

    The part that causes oil leakage is generally the oil path from the fuel tank to the carburetor. The rubber of the joint is aging, and the seal of the carburetor interface is damaged and aging, which will lead to external oil leakage. The hot summer will further promote the leakage of gasoline. Volatilization, combined with the previous several predisposing factors, can easily lead to spontaneous combustion.

    How to prevent spontaneous combustion of motorcycle?

    1.Always check whether the connecting posts and the connectors are loose and rusted;

    2.Check whether the insulation around the flammable parts has insulation and cracking;

    3.Check whether the wire connection has a virtual weld off;

    4.Check the appearance of the oil circuit for leaks and heavy gasoline smell;

    5.Do not abuse the accelerating pump when parking, to prevent excessive gasoline injection into the carburetor throat to increase leakage;

    6.Prevent the motorcycle from being placed in a closed and non-ventilated space for a long time;

    7.Clean the motorcycle in time

  • What are the reasons for spontaneous combustion of motorcycle

    1. High voltage circuit is easy to induce spontaneous combustion

    The high-voltage ignition system of motorcycles has a voltage of up to 10,000 volts. If the high-voltage line and the high-pressure cap are used for a long time, the rubber is aged and the pressure resistance is reduced, so that the high-voltage electricity cannot be restrained, resulting in accidental flashover in a weak place. The phenomenon of burning cars caused by high-voltage electric leakage is common in the working or driving state of motorcycles. It is the most dangerous fault. It should be checked frequently, maintained frequently, and beware of high-voltage leakage.

    2. High current parts are easy to induce spontaneous combustion

    The starting circuit of the motorcycle, the charging circuit, the headlights, the horn and other wires belong to a large current range, and the current transmitted during operation is relatively large. If a virtual connection occurs in this part of the circuit, the contact resistance will increase, and high heat will be generated here. The burned wire is sheathed, thereby generating an accidental spark-induced spontaneous combustion. If these wires are not maintained for a long time, friction with each other may cause damage to the insulating rubber, which may cause accidental flashover to induce spontaneous combustion.

  • The SAE standards for performance of motor oils

    Engine oil currently has a world-wide classification standard. General gasoline engine oil packaging will be marked with the classification of these two general standards.

    One type of standard is the SAE standard - classified by viscosity

    SAE is the acronym for Society of Automotive Engineers: Society of Motor Engineers of the United States (the country is still very strong, his standard is global). Founded in 1905, it is the largest automotive engineering academic organization in the world. Research objects are cars, trucks and construction vehicles, aircraft, engines, materials and manufacturing. The standards established by SAE are authoritative, widely used in the motorcycle industry and other industries, and a considerable part are adopted by global standards. As an important part of the gasoline engine oil, of course, there are professional SAE classification.

    The winter oil grades for the SAE lubricant viscosity classification are: 0W, 5W, 10W, 15W, 20W, 25W. The symbol W stands for winter. The smaller the number before W, the lower the low temperature viscosity and the better the low temperature fluidity. The lower the minimum temperature,

    The oil grades of the SAE lubricants in summer are: 20, 30, 40, and 50. The higher the number, the greater the viscosity, and the higher the applicable maximum temperature.

    SAE Lubricant Viscosity Classification of winter and summer general oil brands are: 5W-20, 5W-30, 5W-40, 5W-50, 10W-20, 10W-30, 10W-40, 10W-50, 15W-20, 15W -30, 15W-40, 15W-50, 20W-20, 20W-30, 20W-40, 20W-50, the smaller the number represents the winter part (lower minimum temperature is applicable), the larger the number represents the summer part (The higher the applicable maximum temperature), the greater the applicable temperature range.

  • The classification of motorcycle oil

    A.According to the type of gasoline engine oil, diesel engine oil, other engine oil;

    As the name suggests, gasoline engine oil is the engine oil used in traditional gasoline engines (most motorcycles use gasoline engines). Diesel engine oil is the engine oil used in diesel engines. Since gasoline engines and diesel engines have different properties and working principles, the gasoline engine oil is generally Diesel engine oil can not be used interchangeably (under special circumstances, there is a common engine oil for gasoline engine and diesel engine).

    B.According to the formula: mineral oil, semi-synthetic motor oil, and fully synthetic motor oil;

    Mineral oil: oil extracted from crude oil extracted from underground oil. This kind of mineral oil is one of the products refined by crude oil. The early oil was mineral oil. Due to its general performance, it is mainly used in engine technology that is not very advanced, is used less frequently, and is not frequently used under the slightest usage conditions to carry people. It is generally used on low-grade motorcycles.

    Semi-synthetic motor oil: It is a product purified by hydrocracking technology based on mineral oil. It is a mixture of mineral oil and fully synthetic motor oil in a 4:6 relationship. The purity of semi-synthetic oil is very close to that of fully synthetic oil, but its cost is slightly higher than that of mineral oil. It is a transitional product of mineral oil to synthetic oil. Applicable to relatively advanced engines (EFI engines and relatively high compression ratio engines), the use of relatively frequent use, occasionally pulling people with long distance, more mileage, generally used in motorcycles above the medium level.