Diesel Filter
Diesel filter is an important fuel filter of diesel engine. The heavy vehicle fuel system operates at higher pressures (up to 60000 psi) and tighter tolerances than ever before. Particles in the fuel, as small as 2-3 microns, can cause wear of sensitive engine components and seriously damage the fuel injection system and other high-pressure engine components.
Best diesel fuel filter can filter more than 90% of pollutants, particles and condensate in diesel oil, and ensure the cleanness of diesel oil to the greatest extent. Sometimes the filter element will install together with fuel water separator filter for better filtering efficient. It is connected in series with the pipeline between the fuel pump and the oil inlet of the throttle body. More features are:
1. Prolong the service life of diesel engine, It is a ultimate solution against engine damage. Make sure that the engine runs stably.
2. Reduce the maintenance cost and time of the engine, prolong the life of your vehicle.
3. Effectively protect the cylinder, piston and piston ring to protect the fuel injection nozzle and fuel injection system.
4. Improve reliability, save fuel.
5. Long life span – reduce the equipments’ operation cost
Types of Diesel Fuel Filter
Diesel fuel filters cross reference can be checked in our website. If you can’t search diesel filters online, email or call to us directly.
Diesel fuel filter for automotive cars
There are two designs for inside cartridge of car fuel filter:
Pleating filter type, the paper is pleated by machine to increase the filter area. It has the advantages of good passing performance, high filtering efficiency, simple structure, low cost and easy maintenance.
Rolling filter type, The crepe paper is rolling like one round. There is glue in the middle to stick the paper together.
Canister fuel filters for heavy-duty construction
It is also called secondary fuel filter diesel. This is a spin on fuel filter that is threaded to the vehicle. Spin on fuel filters are usually installed in the engine compartment. Their main advantage is that they are easy to replace. With the filter wrench, the driver can change it by himself, which is very flexible.
Fuel filter element
Fuel filter element, For environmental protection and resource conservation, People use the fuel element design directly for filtering. There is reusable filter housing or water bowl outside. The fuel filter cartridge will be put inside.
Working Principle
There are two ways of working principle for diesel filter:
Intercepting filtration, When the filtration efficiency requirements are not high, for example, for the filtration of particles over 30 microns, the diameter of the basic particles is larger than the pore diameter of the filter material, which belongs to the typical intercepting filtration. Because the pore size of the filter material and the diameter of the impurity particles are not round, they are both equivalent pore size and equivalent particle size.
Adsorption filtration, for the particles under 5 microns, the diameter is smaller than the pore diameter of the filter material, which belongs to the adsorption filtration. Adsorption filtration is mainly used in high performance diesel filter and diesel engine with electronic control common rail system.
The impurity particles in the fluid make irregular Brownian motion all the time. When they move to the hole wall of the porous body, they are stuck in a small area on the hole wall. The impurity particles removed by the porous body may collide with each other due to Brownian motion and liquid vibration. Under the action of the surface binding force, the apparent diameter of the particles gradually increases. As we all know, the surface energy of particles increases with the decrease of particle size (inverse relationship), and is proportional to the square root of the contact area between particles, so small particles are easy to gather and not easy to disperse.
Media
Wood pulp fuel filter paper (Traditional)
No imitation cloth media
Cellulose Media, Wood pulp fuel filter paper with glass fiber added. The diesel filter price is adapted by most of customers.
Synthetic Media, Composite materials of wood pulp paper, fiberglass paper and non-woven fabric. Many contaminants have a low micron rating and basic filter media will not protect your machinery. We need high micron efficiency synthetic paper for filtering.
Our Features
ü High micron efficiency, filters that ensure a near complete separation of particles up to 3μm. Much better than fuel strainer.
ü Easy and safe cartridge and incineration disposal.
ü Longer diesel fuel filter replacement intervals while maintaining a minimal filter volume.
ü By using the most modern filter media, our filter elements are optimally adapted to the intended use in terms of particle.
ü High chemical acid and alkali resistance
ü Low pressure drop, save the energy consumption
ü Excellent burst pressure performance
ü Equipped with 98% multi-channel filtration efficiency at 25-30 μm, with excellent filtration capacity
Advantages
l Higher dust capacity to extend filter life.
l The multi-density structure increases the gradient aperture and has high durability.
l A lower pressure drop is allowed over the life of the filter.
l Double layer technology, higher long-distance efficiency.
l High maximum operating temperature, thermal shock resistance
l High soot retention
l Strength and mechanical integrity have no effect on filtration efficiency after origami processing
l Low pressure drop, low dispersion of pressure drop (i.e. repeatable Δ P under given gas flow and soot load)
l Chemical stability: anti exhaust components, including sulfur; oxidation resistance
l Small volume, light weight, no secondary emission (such as fiber loss in fiber media)
Performance of different pleating paper
Model No. | Tradional | Cellulose | Ahlstrom |
Grammage g/m² | 138 | 190±5 | 130±5 |
Thickness (mm) | 0.45 | 0.55±0.05 | 0.65±0.05 |
Pemeability CFM（△P=200paL m²*s） | 140 | ≥160 | 79 |
Max Pore μm | 57 | ≤55±5 | 55±5 |
Bursting strength (kpa) | 420 | ≥350 | 450 |
Resin content （%） | 18 | 20 | 19±2 |
Volatiles (%) | 3 | 6 | 4~8 |
Stiffness（mn*m） | — | — | — |
Performance of different crepe paper
Model No. | Tradional | Cellulose | Ahlstrom |
Grammage g/m2 | 92 | 95±5 | 95±5 |
Thickness (mm) | 0.38 | 0.38±0.03 | 0.45±0.05 |
Pemeability CFM（△P=200paL㎡*s） | 50 | ≥30 | ≥30 |
Air flow resistance mm/H2O | 300±15 | 260±12 | 210±12 |
Max Pore μm | 54 | 48±5 | 40±5 |
Bursting strength (kpa) | 210 | 310 | 420 |
Tensile strength MD (kn/m) | 40 | 61 | 80 |
Tensile strength CD (kn/m) | 25 | 36 | 45 |
Volatiles (%) | 3 | 5 | — |
FAQ
When in use, it is only necessary to connect the reserved inlet and outlet ports in series on the oil supply pipeline. Pay attention to the connection in the direction indicated by the arrow, and the direction of oil in and out cannot be reversed. When using and replacing the filter element for the first time, pay attention to exhaust. The exhaust valve is on the end cover of the can body.
Under normal use, if the differential pressure alarm of the prefilter gives an alarm or the cumulative use exceeds 3000 hours, the diesel filter shall be replaced. When the filter element is replaced by the double barrel parallel prefilter, it can not be stopped.
1. Gasoline filter is dedicated to gasoline engine, on the contrary, diesle filter means dedicated to diesel engine.
2. Gasoline engine generates power through ignition device, while diesel engine generates power through cylinder compression
3.The engine working with gasoline produces less kinetic energy, which is generally applicable to motorcycle mopeds and ordinary cars, while the diesel engine produces more power, which is generally applicable to large trucks, freight tractors and other hauling trucks.
4. The pressure resistance and high temperature resistance of diesel oil are worse than that of gasoline, but its filtering property is better than that of gasoline
5. Totally different structurefor outside
6. Gas fuel filters get rid of tiny particles. Diesel fuel filters do the same as well as separating the water.
This is mainly because the high-precision parts of the fuel supply system of the diesel engine have higher quality requirements than that of the diesel engine, the compression ratio of the diesel engine is higher than that of the gasoline engine, the working environment is also worse than that of the gasoline engine, the load borne by the crankshaft and connecting rod is also much greater than that of the gasoline engine, and most of the operating conditions of the diesel engine are also more severe, so the oil filter element of the diesel engine will be more than that of the gasoline engine.
I、 Towering car phenomenon
Clogged gasoline filter is also a kind of clogged oil way. Poor fuel supply will lead to the problem of gasoline atomization, resulting in the imbalance of mixture proportion, insufficient combustion of mixture, and easy to cause the phenomenon of car towering. In the process of driving, if the phenomenon of towering is not felt or the degree is light on the flat road, or obvious or obvious on the uphill, it can be basically judged that it is caused by the mixture proportion.
II、 Engine shudder at idle speed
If the fuel filter is blocked, the engine oil circuit is not smooth, and the atomization of the fuel injection nozzle is poor, the engine will vibrate obviously at idle speed. But idling jitter is not necessarily a problem of the gasoline filter. If the throttle is blocked, idling will also jitter, so it also needs comprehensive judgment.
III、 Weak acceleration and load carrying
This is because even if the gasoline filter element is slightly blocked, the engine power will be reduced and the acceleration will be weak, which is especially obvious in the case of uphill or load.
IV、 It’s difficult to start, the cold car can’t start directly
When the gasoline filter is blocked seriously, the car will be difficult to start or even unable to start, for example, sometimes it needs to be started for 2-5 times.
