Automotive Fuel Pumps Manufacturer

Integrated Electronic Fuel Pump

Fuel supply module integrating primer pump and fuel filter/water separator for efficient low-pressure fuel delivery in diesel engine systems

Integrated Electronic Fuel Pump
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Saiensi specializes in the research, development, and manufacturing of core components for fuel and new energy power systems. The integrated electronic fuel pump is one of the key products. After several rounds of technological advancement, the fuel pump has reached its seventh generation of optimized brushless design. Saiensi holds complete independent intellectual property rights and provides customized development services. Long-term supply partnerships are established with major OEMs such as Weichai Power and international clients. The annual production capacity reaches 600,000 units.

Application

The pump is suitable for diesel engines in various types of diesel vehicles, including heavy-duty trucks, construction machinery, and agricultural equipment. It ensures reliable engine operation under low-temperature conditions and supports environmental protection and fuel efficiency requirements.

Technical Specifications (Single-head model)
Voltage 12V/24V
Pressure 82.5±7.5kPa/200±30kPa
Fuel Pipe Thread Interface M14/M16/M18
Heating Power Approx. 200W
Water Level Alarm Input voltage: 12/24V Output voltage: in fuel and air > 4.6V; in water < 1.41V
Operating Time 3 min / ECU controlled
Operating Temperature -40℃~105℃
Cleanliness Limit Contaminant weight < 27 mg; particle size < 0.6 mm
Protection Rating IP67
Fuel Flow Rate 200L/h

Customized designs can be developed according to user requirements, including product appearance, materials, voltage, flow rate, pressure, and interface type.

Product Range

The integrated electronic fuel pump is available in several structural variations to meet different application requirements and installation layouts, including single-head, small dual-head, dual-head, and large triple-head types.

Single-head model
Single-head model
  • Application: Light-duty diesel vehicles and general commercial vehicles
  • Features: Compact structure, low cost, suitable for standard low-pressure fuel supply
Small dual-head model
Small dual-head model
  • Application: Medium-duty trucks and construction machinery
  • Features: Dual-pump design providing higher flow rate and improved operational stability
Dual-head model
Dual-head model
  • Application: Heavy-duty trucks, high-power construction machinery, and agricultural equipment
  • Features: High flow and pressure capacity, suitable for continuous heavy-load operation
Large triple-head model
Large triple-head model
  • Application: Heavy-duty engines and vehicles operating in extreme conditions (low temperature or high vibration)
  • Features: Highest fuel delivery capacity, high redundancy, ensuring engine reliability under harsh environments
Technical Advantages
Technical Advantages
Electronic commutation eliminates the need for carbon brushes. Compared with brushed motors, the brushless design offers:
  • No fuel contamination;
  • Lower failure rate;
  • Compatibility with advanced communication interfaces such as CAN, LIN, and ECU control, enabling intelligent and precise control in future automotive systems.
Technical Advantages
The roller pump uses wear-resistant materials to extend service life.
Technical Advantages
Customization is available for appearance, materials, electrical parameters, and interfaces.
Fuel flow diagram of integrated electronic fuel pump

The integrated electronic fuel pump combines fuel delivery, air discharge, fuel preheating and de-waxing, and fuel filtration functions. It is used in the low-pressure fuel supply system of diesel engines to ensure smooth fuel flow and remove water and solid contaminants from the fuel.

Fuel flow diagram of integrated electronic fuel pump
Fuel Pump Composition

The integrated electronic fuel pump consists of a base, brushless roller pump, control module, filter, and clear bowl. The base and roller pump form the electric pump assembly, which is controlled by the controller that sends operating commands to the motor.

Fuel Pump Composition
Brushless motor Roller pump 1. Brushless motor Roller pump
Control module 2. Control module
Base 3. Base
Filter 4. Filter
Clear bowl 5. Clear bowl
Why Choose Saiensi
  • The integrated electronic fuel pump was independently developed and upgraded through multiple generations, from the first-generation plunger pump and second-generation solenoid pump to the seventh-generation optimized brushless electronic fuel pump. The company holds full proprietary intellectual property rights, with 4 invention patents and over 60 utility model patents granted as of June 2023.

  • As a trusted enterprise in China’s brushless electronic fuel pump segment, the company’s lightweight electronic fuel pump assembly received the 2019 China Technological Innovation and Invention Achievement Award. Compared with traditional designs, energy consumption is reduced by 30%, and service life is extended by 50%. This supports OEMs in cost reduction and efficiency improvement, while end users benefit from lower maintenance costs and stable operation.

    Why Choose Saiensi
  • Since 2009, the company has supplied Weichai Power as a Tier-1 supplier, expanding from electronic fuel pumps to cooling modules, new energy thermal management systems, and methanol pumps. The company has received multiple awards from Weichai for excellence in product development, quality, and cost control, and was granted the “Strategic Partner Product Development Consortium” qualification at Weichai’s 2022 Global Supplier Conference.
  • Similar products have been custom-developed for enterprises in South Korea, the United States, and other regions, achieving mass production and global distribution.
Products
Manufacturing Base
Thermal Management Products
Thermal Management Products
Rubber Sealing & Vibration Isolation Products
Rubber Sealing & Vibration Isolation Products
Gas Springs
Gas Springs

The integrated electronic fuel pump combines fuel delivery, air discharge, fuel preheating and de-waxing, and filtration in a single assembly for diesel engine low-pressure systems. The design ensures smooth fuel flow and removes water and particulates. Electronic commutation eliminates carbon brushes, preventing fuel contamination and reducing failure rates.

Under low ambient temperatures, certain fuels may partially solidify before reaching the wax point, restricting flow and causing engine start failures. The integrated electronic fuel pump features a preheating and de-waxing system that maintains fuel fluidity in the low-pressure circuit, ensuring stable engine operation in cold environments.