S-type fuel injection nozzle

The S.P series of long bore and pintle fuel injector pairs produced by Huahui Oil Pump and Nozzle Company are suitable for 60 - 135 cylinder bore series diesel engines: the product performance is reliable, and its performance indicators rank among the top of similar products in China. The S-type fuel injection nozzle has been praised by users for many years. Quality trustworthy products.

The precision couple adopts chrome-plated anti-corrosion process, with needle valve opening and closing response ≤0.5ms, and static leakage ≤ 0.05ml/min. It is adapted to the National Sixth Emission Standard and can withstand extreme temperature differences of-40℃~180℃. With the design of porous nozzles, PM2.5 emissions are reduced by 30%, and the overall life of the injector is extended.

 

Product Introduction

The S-type Fuel Injection Nozzle is a mechanically controlled diesel injector nozzle designed for traditional in-line fuel injection systems. Known for its robust structure and reliable performance, the S-type nozzle features a straight, multi-hole design optimized for simple diesel engines that operate in tough environments. It ensures consistent fuel spray, efficient atomization, and dependable combustion—making it ideal for low-speed and medium-speed diesel engines commonly found in agricultural, construction, and industrial applications. Its mechanical simplicity allows for easy maintenance and long-term reliability.

 

Product Advantages

Durable and Reliable: Made from heat-treated, high-strength steel that withstands high-pressure diesel injection and prolonged operation in harsh conditions.

Consistent Atomization: The straight-hole (S-type) design ensures stable and even fuel spray for effective combustion and fuel economy.

Easy Maintenance: With a simple mechanical design, S-type nozzles are easy to clean, inspect, and replace without complex diagnostic tools.

Cost-Effective Solution: Ideal for older or mechanically controlled engines where durability and low maintenance costs are priorities.

Field Proven Performance: Extensively used in practical applications with proven reliability under variable fuel qualities and field conditions.

 

Product Applications

S-type fuel injection nozzles are commonly used in:

Agricultural Equipment: Diesel engines in tractors, rice mills, threshers, and irrigation pumps.

Construction Machinery: Bulldozers, road rollers, and mixers powered by mechanical diesel engines.

Industrial Equipment: Stationary engines for generators, air compressors, and industrial pumps.

Transportation: Older diesel trucks, buses, and utility vehicles using in-line fuel pump systems.

Marine Applications: Small diesel engines in fishing boats and auxiliary marine systems.

 

FAQ

How many production lines in your factory?

5 production lines

 

What is your MOQ?

100 pieces

 

What distinguishes an S-type nozzle from other nozzle types?

S-type nozzles have a straight-hole design, optimized for simple mechanical systems. They offer reliable fuel atomization for older diesel engines.

 

Are S-type nozzles compatible with modern common rail systems?

No, S-type nozzles are specifically designed for mechanical injection systems and are not compatible with electronic or common rail systems.

 

How do I know if my S-type nozzle needs replacement?

Symptoms include hard starting, rough engine performance, increased smoke, loss of power, and poor fuel efficiency.

 

Can S-type nozzles be reused after cleaning?

Yes, if not physically damaged or excessively worn, they can often be cleaned and reused using ultrasonic or solvent cleaning methods.

 

How long do S-type nozzles typically last?

With proper maintenance and clean fuel, they typically last 3,000–5,000 hours or more, depending on operating conditions.

 

Company Introduction

Changzhou Huahui Fuel Injection Equipment Co.,Ltd's main products include S and P series long and short injector assembly and injector nozzle parts. Injection pumps used in 165-1125 single-cylinder engines and plungers and oil delivery valve parts used in injection pumps. In recent years, with the efforts of our scientific research personnel, we have successively developed P series BQ type, PW type, P7 type, P8 type, PE type, PN type, P7100 type, P2000 type, high-pressure common rail series, etc., a total of more than 100 types of plunger parts and electronically controlled single pumps.