Fuel Injector Line

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Fuel Injector Line

High-pressure fuel injection pipes are critical pipelines connecting the high-pressure fuel pump (or common rail) to the fuel injectors. Their primary task is to safely, accurately, and efficiently deliver ultra-high-pressure fuel to the injectors in each cylinder. In modern engines, injection pressure is crucial to fuel atomization and combustion efficiency. Therefore, fuel injection pipes are more than just simple delivery channels; they are critical structural components that withstand extreme pressure pulsations and ensure system dynamic response.

Product Advantages:
1. Made from specially customized high-strength, low-alloy steel tubing. Heat treatment and specialized cold working processes yield extremely high yield strength and fatigue resistance, enabling them to safely withstand the ultra-high pressures exceeding 200 MPa encountered in diesel common rail systems.

2. Advanced processing technology is employed. By applying extreme pressure to the pipe, plastic deformation occurs on the inner wall, creating residual compressive stress. This effectively offsets the tensile stress generated by the fuel operating pressure, significantly improving the pipe's fatigue life and burst pressure.

3. Advanced CNC tube bending machines are used to ensure the pipe's three-dimensional geometry perfectly matches the engine design, ensuring precise installation.
In addition to our standard product range, we offer customized solutions for a wide range of industries and applications, from single-piece production to series production.

NINGBO JIATIAN AUTOMOBILE PIPE CO.,LTD.

About JIATIAN

The company is located in Wanhou, Zhanqi Town, Yinzhou District, Ningbo City. It is 25 kilometers away from Ningbo Liushi Airport and 5 kilometers away from Ningbo Coastal Industrial Zone. The surrounding area is beautiful with convenient transportation. The company was established on the basis of the development of Ningbo Xingxin Metal Products Factory (established in 1995), and is a high-tech enterprise specializing in the production of automotive pipe fittings. The company's area is 32,000 square meters; the factory area is 26,000 square meters.

The main products of the company are: manufacturing and development of automotive corrugated pipes. Currently, there are 10 CNC fully automatic pipe bending machines, 2 large-scale brazing furnaces assembly lines, 10 various specifications hydraulic internal forming machines (with the maximum processing length of 1.5 meters and diameters ranging from ￠10 to ￠80), 1 800T hydraulic water expansion machine, 4 fully automatic laser welders, 4 sets of welding robots, 8 large-scale machining centers, 6 Panasonic arc welding machines, and over 30 various supporting pipe forming machines. The company has its own R&D and processing centers. The water expansion corrugated pipe equipment and technology of the company are currently at the industry leading level. A comprehensive laboratory has been established.

The company is committed to creating the world's leading automotive bellows with outstanding quality and innovative technology, ensuring that each product can perform well in various environments and promoting the progress of the industry.

NINGBO JIATIAN AUTOMOBILE PIPE CO.,LTD.

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Fuel Injector Line Industry knowledge

Fuel Injector Lines are essential components in modern engine systems. They safely and efficiently transport ultra-high-pressure fuel from the fuel pump to the fuel injectors. The pressure at which fuel is injected plays a critical role in fuel atomization and combustion efficiency, making these pipes not only a transport channel but also a key structural element that must withstand extreme pressure fluctuations.

Key Features:

High-Strength Material: Made from specially treated low-alloy steel pipes, they are heat-treated and cold-processed to provide high yield strength and fatigue resistance, withstanding over 200 MPa in diesel common rail systems.

Advanced Manufacturing Process: The pipes undergo high-pressure processing, which creates residual compressive stress inside the pipe, effectively counteracting the tensile stress caused by fuel pressure, thus improving fatigue life and burst pressure.

Precision Match: Using advanced CNC bending machines, we ensure that the pipe’s 3D geometry perfectly matches the engine design, ensuring precise installation.

Product Applications：
Diesel Common Rail Systems: Essential for diesel engines, these pipes ensure precise fuel delivery under extreme pressures.

High-Performance Vehicles: Used in high-performance vehicles where fuel pressure systems are crucial for enhancing engine power and combustion efficiency.

  • Material Comparison Table:

Material Type Yield Strength (MPa) Fatigue Resistance Processing Method
High-Strength Low-Alloy Steel > 900 Excellent Heat Treatment + Cold Processing
Standard Steel Pipe < 500 Poor Standard Processing

  • Pressure Test Results: (Chart showing how the pipes perform under different pressure levels).

FAQs：

Q1: What is a high-pressure fuel injection pipe?
A high-pressure fuel injection pipe connects the fuel pump (or common rail) to the fuel injectors, delivering ultra-high-pressure fuel to ensure precise atomization for efficient combustion.

Q2: How much pressure can these pipes withstand?
Our high-pressure fuel injection pipes are designed to handle pressures exceeding 200 MPa, suitable for modern diesel common rail systems and other high-performance engines.

Q3: How do you ensure the precision and quality of your pipes?
We use advanced CNC bending machines and laser welding techniques to ensure that the pipes' geometry matches engine specifications perfectly. Each product undergoes strict testing to ensure its performance in various operating conditions.

Q4: Do you offer customized solutions?
Yes, we offer customized solutions for various industries and applications, providing tailored pipes based on individual customer requirements