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
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.
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.
| 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.
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.
- Application: Light-duty diesel vehicles and general commercial vehicles
- Features: Compact structure, low cost, suitable for standard low-pressure fuel supply
- Application: Medium-duty trucks and construction machinery
- Features: Dual-pump design providing higher flow rate and improved operational stability
- Application: Heavy-duty trucks, high-power construction machinery, and agricultural equipment
- Features: High flow and pressure capacity, suitable for continuous heavy-load operation
- 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
- 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.
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.
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.
- 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.
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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.
- 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.
How does the fuel pump ensure low fuel contamination and smooth flow for heavy-duty truck applications?
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.
How does the product ensure reliable fuel supply and engine operation at low temperatures?
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.