Your Professional Delphi Pump Supplier
Dongguan Truth Diesel Engine Parts Co., Ltd., founded 25 years ago, is one of the earliest companies in China to focus on core components for diesel engines. Throughout its development, the company has consistently adhered to the core strategy of "deep industry expertise and professional focus," growing from a small trading company to a modern industrial group integrating R&D, production, sales, and service
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![Diesel Engine Fuel Pump 9520A940G]()
Diesel Engine Fuel Pump 9520A940GDiesel Engine Fuel Pump 9520A940G This is a high-pressure fuel injection pump designed for heavy-duty commercial vehicles and industrial power equipment. Belonging to Delphi's mature product line, it -
![Diesel Engine Fuel Pump 9520A424G]()
Diesel Engine Fuel Pump 9520A424GDiesel Engine Fuel Pump 9520A424G This is the core fuel injection pump model in the Delphi DP310 series, specifically designed for the Perkins 1104D-44TA engine, and is an original equipment -
![Diesel Engine Fuel Pump 9520A354G]()
Diesel Engine Fuel Pump 9520A354GDiesel Engine Fuel Pump 9520A354G This is a high-pressure fuel pump focused on industrial hydraulic systems, specifically designed for equipment such as injection molding machines, die-casting -
![Diesel Engine Fuel Pump 9520A185H]()
Diesel Engine Fuel Pump 9520A185HDiesel Engine Fuel Pump 9520A185H This is a high-performance, cost-effective high-pressure fuel pump assembly designed specifically for diesel passenger cars and light commercial vehicles, with its -
![Diesel Engine Fuel Pump 9520A182G]()
Diesel Engine Fuel Pump 9520A182GDiesel Engine Fuel Pump 9520A182G This is a versatile and cost-effective high-pressure fuel pump designed specifically for light agricultural machinery and small commercial vehicles, with stability,
Why choose us
Production Capacity
With over 500 skilled industrial workers and a "two-shift" production model, the annual production capacity can reach: 500,000 sets of fuel injectors, 150,000 sets of high-pressure fuel pumps, and 300,000 pieces of other core components, fully meeting the needs of large-scale global orders.
Management System
The factory strictly implements the ISO9001 quality management system and 5S on-site management standards, achieving full-process visual control from raw material warehousing to finished product delivery, ensuring traceability and supervision of the production process.
Industrial Big Data
Some core products have passed CE certification, EPA certification (US Environmental Protection Agency certification), and TS16949 automotive industry quality management system certification, meeting market access requirements in different regions worldwide;
Diesel Engine Fuel Pump 9520A940G
Diesel Engine Fuel Pump 9520A940G Featuring a high-strength alloy steel pump body structure, precision-cast and surface-hardened, it boasts excellent pressure resistance and wear resistance, capable of withstanding fuel pressures up to 250 bar. The internal core plunger assembly employs a double-seal design, coupled with an intelligent electronic metering unit, ensuring fuel injection accuracy within ±0.5%, guaranteeing complete engine combustion and reducing fuel consumption and emissions. The pump body integrates efficient heat dissipation channels, effectively dispersing heat generated during high-pressure operation and preventing performance degradation due to excessively high oil temperatures. Addressing the vibration characteristics of heavy-duty equipment, this model features an optimized shock-absorbing structure, reducing the impact of vibration on internal components and extending service life through reinforced mounting brackets and elastic seals. Its fully sealed protection design achieves an IP67 rating, resisting corrosion from harsh environments such as dust and moisture, and is compatible with standard diesel and low-sulfur fuels, making it suitable for various demanding operating scenarios.
Product Parameters
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Operating Mode |
Electronically controlled high-pressure injection |
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Applicable Voltage |
24V (Operating voltage range 22-28V) |
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Operating Pressure |
Maximum 250bar |
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Fuel Flow Rate |
380L/h (@24V, 10bar) |
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Rated Current |
15.8A |
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Pump Dimensions |
350mm×300mm×280mm |
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Product Weight |
12.5kg |
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Connection Specifications |
Inlet/Outlet uses M20×1.5 threaded interface |
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Metering Accuracy |
±0.5% |
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Operating Temperature |
-30℃~135℃ |
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Compatible Engine |
Volvo TAD940GE series diesel engine |
Bad Fuel Pump Symptoms
Engine Splutters
This occurs when the fuel injection pump in a diesel engine cannot deliver the required volume at the correct pressure setting. One can notice the engine spluttering noise while accelerating the engine.
Whining Noise
The noise is made by a faulty diesel injection pump and originates from the pump itself. Sometimes, it is caused by insufficient fuel in the tank.
Difficult to Start
This happens when the fuel pump cannot produce the required pressure to pass the fuel to the injectors.
High Exhaust Emissions
This happens when the diesel injection pump pumps a higher volume of fuel than what is needed for operation. This results in improper combustion, leading to higher emissions and poor fuel economy.
How a Diesel Fuel Pump Delivers Power
Think of a fuel pump for diesel engines as the heart of the whole system. Its job is straightforward but incredibly demanding: it pulls low-pressure fuel from the tank, compresses it to an insane level, and then fires it into the engine as a fine, atomized mist right when it's needed. This isn't just a simple transfer; it's a high-stakes, precision-timed sequence of drawing, pressurizing, and delivering fuel.
Let's follow the fuel on its journey. It all begins when the pump sucks diesel from the tank, usually pulling it through a filter to get rid of any gunk or debris. This first step is just about getting the fuel into the pump's main body.
Once it's inside, the real work begins. The pump acts like a miniature hydraulic press, using a set of internal parts to crank up the fuel's pressure to an extreme level.
This visual gives you a great overview of how the fuel moves from the pump to the engine, with the pump driving the entire process.
Core Components and Their Roles
To pull all this off, a few key components have to work together flawlessly. Designs can differ between models, but you'll almost always find these fundamental parts doing the heavy lifting.
Low-Pressure Pump
Often called a lift pump, its only job is to get things started. It draws fuel from the tank and feeds it to the main high-pressure pump.
High-Pressure Plungers
These are the muscle of the operation. Driven by a camshaft inside the pump, they do the hard work of creating the intense pressure needed for injection.
Delivery Valves
Think of these as one-way gates. They let high-pressure fuel shoot out toward the injectors but slam shut instantly to keep it from flowing backward. This maintains pressure in the fuel lines for the next cycle.
Certifications
FAQ
As one of the leading delphi pump suppliers in China, we warmly welcome you to buy original new delphi pump made in China here from our factory. All our products are with high quality and competitive price. Contact us for quotation.
Diesel Engine Fuel Pump 9520A182G, Diesel Engine Fuel Pump 9520A424G, water pump 4 inch diesel
