Xi'an Qintai Automotive Emission Technology Co. Ltd brings you industrial-grade urea injector solutions backed by over two decades of engineering excellence. Our products are high-precision electromagnetic solenoid valves that meter and atomize AdBlue into diesel exhaust streams, achieving up to 90% NOx reduction to meet stringent Euro VI and EPA Tier 4 Final standards. Manufactured with 304 stainless steel through NC machining and vacuum brazing, each injector operates reliably across -40°C to 80°C temperature ranges. With an annual production capacity exceeding one million units, we serve as the No.1 core supplier to China's leading engine manufacturers including Weichai Power, Yuchai Power, and Quanchai Power, ensuring your emission systems perform flawlessly under real-world conditions.
Cutting edge diesel motors depend on Particular Catalytic Diminishment (SCR) frameworks to comply with natural controls. The item serves as the heart of this framework, accurately dosing urea arrangement into hot debilitate gases.
When the electronic control unit (ECU) enacts the injector, it splashes a fine fog of urea arrangement into the debilitate stream. This arrangement quickly hydrolyzes into alkali (NH3) at hoisted temperatures. The alkali at that point responds with hurtful nitrogen oxides (NOx) in the catalyst chamber.
The chemical change takes after this handle: CO(NH2)2 + H2O → 2NH3 + CO2, taken after by 4NO + 4NH3 + O2 → 4N2 + 6H2O. This changes over harmful NOx outflows into safe nitrogen gas and water vapor.

| Specification | Cartier | Bosch | 2.2 |
|---|---|---|---|
| Injector Resistance | 12Ω±0.6Ω | 12Ω±0.6Ω | 12Ω±0.6Ω |
| Operating Voltage | 12/24V | 12/24V | 12/24V |
| Insulation Resistance | >3MΩ | >3MΩ | >3MΩ |
| Working Frequency | 1-50HZ | 1-50HZ | 1-50HZ |
| Number of Spray Holes | One | Three | Six |
| Orifice Diameter | 0.315mm | 0.19mm | 0.14mm |
| Spray Angle (α) | 25°±5° | 25°±5° | 25°±5° |
Heavy-Duty Long-Haul Trucking: Your Class 8 trucks demand reliability over millions of operational cycles. Our urea injector maintains precise flow accuracy under constant vibration and varying load conditions, preventing unexpected downtime during critical deliveries.
Off-Road Construction Machinery: When your excavators and bulldozers operate in dusty, remote environments, you need components that withstand extreme conditions. Our injectors are engineered to handle severe mechanical shocks and prevent costly "limp mode" activations at job sites.
Marine and Power Generation: Large-scale stationary engines and marine vessels require high-flow injectors that manage massive NOx volumes. Our modular designs offer easy field maintenance and superior resistance to saline corrosion.

Free R&D Capability: Our group of 86 committed R&D specialists persistently innovates to improve item execution and unwavering quality. We hold 58 innovation licenses, illustrating our commitment to innovative advancement.
National High-Tech Endeavor: Set up in 2001, we have gathered 420 talented representatives who guarantee steady quality over each generation arrange. Our offices keep up ISO9001, IATF16949, CMC, Ex, UL, CE, REACH, and RoHS certifications.
Comprehensive OEM/ODM Administrations: Whether you require standard arrangements or customized arrangements, we bolster adaptable item alterations agreeing to your particular application prerequisites. From starting plan to mass generation, we accomplice with you all through the whole improvement cycle.
China's No.1 OEM Provider: Our position as the driving center provider demonstrates our capability to meet the requesting benchmarks of major motor producers.

We maintain strategic partnerships with China's top engine manufacturers, including Weichai Power, Yuchai Power, and Quanchai Power. These collaborations have established us as the market leader in China's emission control sector. Our partnerships extend globally, serving OEM clients who trust our engineering expertise and production consistency.

Qintai effectively partakes in universal car presentations and industry conferences over Asia, Europe, and North America. Our worldwide showcase nearness amplifies to over 30 nations, where our items offer assistance armada administrators and hardware producers accomplish outflow compliance. We keep up specialized back centers in key markets to guarantee quick reaction to your benefit needs.

Our cutting edge distribution center offices span 15,000 square meters, prepared with climate-controlled capacity zones to keep up item keenness. We actualize progressed stock administration frameworks that guarantee quick arrange fulfillment. Vital areas close major transportation center points empower productive conveyance to household and universal clients.
Our coordinations organize accomplices with solid carriers who get it the significance of opportune conveyance. We track each shipment from our office to your accepting dock, giving you with real-time overhauls all through the travel.

Each product receives protective packaging designed to withstand international shipping conditions. We use moisture-resistant materials and shock-absorbing inserts to prevent damage during transit. Product labels include complete traceability information, QR codes for authenticity verification, and handling instructions in multiple languages.
For bulk orders, we utilize reinforced pallets and shrink-wrapping techniques that optimize container space while maintaining product security. Our shipping department coordinates with customs brokers to expedite clearance procedures and minimize border delays.

Q: How frequently ought to the items be replaced?
A: Substitution interims shift based on working conditions, but regularly run from 150,000 to 300,000 kilometers. Normal framework diagnostics offer assistance distinguish execution debasement some time recently total disappointment occurs.
Q: What causes the item blockages?
A: Crystallization from terminated or tainted DEF liquid is the essential cause. Working temperatures underneath -11°C without appropriate warming can too trigger gem arrangement. Continuously utilize new, ISO-standard urea solution.
Q: Can your injectors work with distinctive urea concentrations?
A: Yes, our injectors suit both AUS32 (32% urea) and AUS40 (40% urea) arrangements, adjusting to ISO22241 and ISO18611 guidelines separately. Counsel your motor manual for suggested concentration.
Q: Do you give specialized bolster for installation?
A: Completely. Our specialized group offers comprehensive establishment direction, investigating help, and symptomatic bolster. We too give preparing programs for your support personnel.
Q: What guarantee scope do you offer?
A: We give 12-month guarantee scope from conveyance date, ensuring against fabricating surrenders. Expanded guarantee alternatives are accessible for large-volume orders.
Q: How do I confirm item authenticity?
A: Each injector incorporates a special serial number and QR code connected to our confirmation database. Filter the code utilizing our portable app to affirm realness and get to item history.
Ready to upgrade your emission control system with reliable, high-performance injectors with urea injector? Reach us at info@qt-sensor.com for quotations, technical specifications, or customization inquiries today.
Our customers’ satisfaction speaks for our quality — contact us to experience the same reliable service.