Zirconia ceramic plunger for fuel diesel engines

 Innovacera has rich experience in producing zirconia ceramic plungers for diesel injector valves market and high precision ceramic machining process, the diesel injector valve is one of main components of fuel diesel engine, The ceramic plungers core material Innovacera provided is zirconium oxide (ZrO2) which is good material of choice for joining ceramic and steel. Due to the material of plunger is zirconia yttria fine grain which is high corrosion resistance and zirconia ceramic metering plungers can be machined high precision such as +/-0.005mm and good surface finish, these help to improve the efficiency and stability of the diesel fuel injector.

 

 

Innovacera zirconia ceramic plungers with barrel was installed in diesel injector valves and widely used in QSM11 and ISM11diesel engine fuel injector. In the diesel engines part, generally this diesel injector ceramic core common model is 3411711, so if you need this kind ceramic plunger core to repair, you can tell us you need the 3411711. We also produce zirconia ceramic plunger for N14 injector ceramic plunger and L20 injector ceramic plunger, customized plunger for new product is available too.

 

 

Zirconia ceramic plunger used in the diesel fuel injector pump for diesel engine

Some of the earlier ISX engines used zirconia ceramic plunger rods in the diesel fuel pumps. These ceramic plunger rods is belong to diesel power edhydrojet machin pump parts. Innovacera zirconia ceramic plunger rods with sleeve was installed in QSl9 or CCR1600 3973228 diesel injector pump and widely used in diesel engine fuel pump. In the diesel engines part, generally call this ceramic plunger common model of 4088593, Ceramic Plunger and sleeve 4088593 so if you need this kind plunger to repair, you can tell us you need the product of 4088593. We also make customized plunger for new research product.

 

 

Ceramic plunger for fuel diesel injection engine advantage:

1.Excellent strength
2.High corrosion resistance
3.High fracture toughness
4.High resistance to crack propagation
5.High wear resistance
6.Low thermal conductivity
7.High thermal expansion
8.High dimensional accuracy and surface finish

 

Zirconia ceramic material properties:

Technical Parameter	Technical Item	Unit	Value
Physical Properties	Major content	%	ZrO2＋HfO2: 94.65%, Y2O3: 5.35%
	Density	g/cm3	≥6.0
	Water absorption	%	0.00
Mechanical Properties	Hardness	HV	1,400.00
	Bending Strength	Kgf/mm2	11.00
	Compressive Strength	Kgf/mm2	25.00
Temperature Properties	Thermal Expansion Coefficient (0-1000℃)	(10-6/K)	9.5*10-6
	Thermal Shock Resistance	T（℃）	360.00
	Thermal Conductivity	W/m.k	3.00
	Volume Resistance Rate (20℃)	(Ω·cm)	>10 12

 

How the Ceramic Plunger work in a Diesel Engine?

In traditional diesel fuel supply systems, the injection pump plays a critical role in the high-pressure fuel circuit by raising diesel fuel pressure to approximately 10 MPa to supply fuel to the corresponding injector. In modern high-pressure common-rail electronic control systems, the injector is regulated by the ECU, while the injection pump still serves to increase diesel pressure. The injector itself is responsible for delivering diesel fuel into the engine cylinder in a fine mist form.

 

The fuel injection pump directs fuel to the injector. Located in the cylinder head, the injector is connected to the high-pressure fuel line and sits between the camshaft and this fuel line. The injector is a highly precise component, requiring an extensive dynamic flow range, robust anti-clogging and anti-contamination capabilities, and optimal atomization performance.

 

Upon receiving high-pressure diesel, the injector atomizes the fuel into tiny droplets through its precision ceramic plunger nozzle, with droplet diameters typically between a few to several tens of microns. This precise atomization ensures thorough mixing of fuel and air, optimizing combustion efficiency.

 

Some diesel engines have special requirement, the fuel supply pressure from the injection pump must remain within a tightly controlled range, and the diesel injector’s ceramic plunger nozzle core hole must meet very stringent accuracy requirements. These specifications help ensure fuel atomization quality and precise injection positioning, thereby enhancing the engine’s power, efficiency, and emissions performance.

 

Consult with Innovacera

Innovacera has good ability in machining super high accuracy ceramic components, If you need any ceramic plunger for diesel fuel injector engine or any technology questions, welcome to contact Innovacera at sales@innovacera.com or 86 592 558 9730, we will do our best to meet your requirement.