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2026-06-02

Working principle of piston cooling fuel injector

Working principle of piston cooling fuel injector
The engine oil comes from the main oil passage of the engine, and under the pressure provided by the high-pressure oil pump

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2026-06-02

What are the application areas of bolts

What are the application areas of bolts
Construction engineering: steel structure factory buildings, bridges, tower frames, high-rise building column bases, concrete anchoring (anchor bolts, anchor bolts), etc.

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2026-06-02

What are the types of nozzles for fuel injectors

What are the types of nozzles for fuel injectors
Orifice fuel injector: The needle valve head has 1-10 precision injection holes (usually 4-8 holes), which spray multiple conical mist

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What are the characteristics of conical pins

Its taper is generally 1:50, which makes it easy to locate and install the taper pin during assembly, and ensures good alignment.

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2026/06

The function of piston cooling fuel injector

When the engine is running, the top of the piston is directly subjected to the impact of high-temperature gas above 2000 ℃ in the combustion chamber.

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2026/06

What are the materials of nuts

Carbon steel (including low-carbon, medium carbon, high carbon, and alloy steels such as 40Mn2, with high strength and low cost, commonly used for universal fastening).

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2026/06

What are the common types of bolts

Hexagonal head bolt: There are two types: internal and external. It is most commonly used for fastening mechanical equipment, and the wrench is easy to operate. The cost of external hexagonal bolts is lower.

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2026/06

What is the difference between bolts and screws

Screws and bolts are two common types of fasteners that differ in structure, purpose, and other aspects.

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2026/06

The difference between double headed bolts and single headed bolts

The most obvious difference between a double headed stud and a single headed stud is their appearance.

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2026/06

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